The leader of China special amines-

Articles posted by: admin

Home / admin

The innovative application of epoxy promoter DBU in environmentally friendly water-based coatings is in line with the trend of green development

3月 18th, 2025 News

Epoxy accelerator DBU: The finishing touch in green water-based coatings

Today, when environmental protection storms swept the world, the chemical industry is experiencing an unprecedented green revolution. As an important role in this change, epoxy promoter DBU (1,8-diazabicyclo[5.4.0]undec-7-ene) has launched a technological innovation in the field of water-based coatings with its excellent catalytic properties and environmentally friendly characteristics. This magical chemical can not only significantly improve the curing efficiency of epoxy resin, but also effectively reduce the VOC (volatile organic compound) emissions of the coating system, providing a new solution for the green development of the coating industry.

DBU is unique in that its bicyclic structure imparts strong alkalinity and excellent thermal stability, which allows it to promote cross-linking reaction between epoxy resin and curing agent at lower temperatures while avoiding odor problems and corrosion risks caused by traditional amine catalysts. As a non-volatile liquid catalyst, DBU shows good dispersion and compatibility in aqueous systems, which can effectively solve the common problems of slow drying speed and poor adhesion of water-based coatings during curing.

As the global demand for environmental protection is becoming increasingly stringent, traditional solvent-based coatings have been difficult to meet the needs of modern industry. Water-based coatings have become an inevitable choice for the development of the coating industry due to their advantages of low VOC emissions, safety and non-toxicity. DBU is the key driving force in this transformation process. It not only improves the performance of water-based coatings, but also provides technical support for achieving a more efficient production process. By using it in conjunction with different types of curing agents, DBU can flexibly adjust the curing speed and final performance of the paint to meet the needs of various application scenarios.

This article will start from the basic characteristics of DBU, and deeply explore its innovative application in environmentally friendly water-based coatings, analyze its importance to the development of the industry, and display its application effects in different fields based on actual cases. Through a comprehensive study of relevant domestic and foreign literature, we will fully reveal how DBU can promote the green transformation of the coatings industry while maintaining high performance and contribute to sustainable development.

The chemical properties of DBU and its unique advantages in water-based coatings

DBU is an alkaline compound with a special bicyclic structure, with a molecular formula of C7H12N2 and a molecular weight of 124.19. This unique chemical structure gives DBU a range of outstanding performance characteristics, making it irreplaceable in the field of water-based coatings. First, DBU is extremely alkaline (pKa is about 18.2), which allows it to efficiently catalyze the reaction between epoxy groups and amine or anhydride groups, significantly speeding up the curing process. Compared with traditional amine catalysts, the catalytic activity of DBU is more gentle and controllable, and will not trigger severe exothermic reactions, thereby improving the safety of the production process.

Secondly, DBU has excellent thermal stability and can remain stable even under high temperature conditions.Catalytic properties. Studies have shown that DBU can maintain high activity below 200°C, which makes it particularly suitable for applications where high temperature curing is required. In addition, the DBU has moderate solubility in water (about 3g/L at 25°C), which can be evenly dispersed in the aqueous system without precipitation, ensuring the long-term storage stability of the coating. More importantly, DBU does not react sideways with water to produce adverse products, which is crucial for the stability of water-based coatings.

Another prominent feature of DBU is its extremely low volatility and boiling point up to 256°C. This characteristic allows it to be not lost due to volatilization during coating construction, thus ensuring the consistency of coating performance. At the same time, low volatility also means that DBU will not produce irritating odors like traditional amine catalysts, greatly improving the comfort of the working environment. Experimental data show that the toxicity level of DBU is only slightly toxic, with an LD50 value greater than 5g/kg, which is much lower than most amine compounds, showing good biosafety.

In water-based coating systems, DBU shows unique advantages. It can form good synergistic effects with various types of aqueous epoxy resins and curing agents, and promote the progress of crosslinking reactions. Specifically, DBU can reduce the curing time by reducing the activation energy of the epoxy group and accelerating its reaction rate with the curing agent. At the same time, since DBU itself does not contain any harmful ingredients, it will not negatively affect the environmental performance of the paint, but will instead help improve the overall performance of the coating. For example, water-based coatings with a proper amount of DBU often exhibit better adhesion, chemical resistance, and mechanical strength.

It is worth noting that the dosage of DBU needs to be optimized according to the specific formula system. The generally recommended amount is 0.1%-0.5% of the mass of epoxy resin. Excessive use may cause defects such as bubbles or pinholes on the surface of the coating. In addition, DBU can also be used in conjunction with other additives to further improve the leveling, settlement resistance and storage stability of the coating. This versatility makes DBU an indispensable key component in modern water-based coating formulation design.

The development history and environmental protection needs of water-based coatings

The development history of water-based coatings is a historical chapter where scientific and technological progress and environmental protection are intertwined. Since the mid-20th century, with the acceleration of industrialization, the environmental pollution problems brought about by traditional solvent-based coatings have become increasingly prominent. These coatings contain a large number of volatile organic compounds (VOCs), which will release second-class harmful substances during use, seriously threatening human health and aggravating air pollution. Faced with increasingly severe environmental pressure, governments across the country have issued strict regulations to limit VOC emissions, promoting the transformation of the coatings industry toward environmental protection.

Water-based coatings came into being. They use water as the main solvent, which greatly reduces the use of organic solvents and fundamentally solves the VOC emission problem. However, early water-based coatings had many technical problems, such as slow drying speed and poor adhesion., insufficient water resistance, etc., these problems seriously restrict their promotion and application. Especially in the field of industrial coatings, water-based coatings often have difficulty meeting the standards of solvent-based coatings, which makes many companies stand on the wait-and-see attitude towards them.

After entering the 21st century, with the advancement of nanotechnology, interface chemistry and polymer materials science, the technical bottleneck of water-based coatings has gradually been broken. The development of new emulsifiers, dispersants and functional additives has greatly improved the comprehensive performance of water-based coatings. Among them, the introduction of the epoxy promoter DBU has achieved a qualitative leap. By regulating the curing reaction of epoxy resin, DBU significantly improves the drying speed and adhesion of water-based coatings, while maintaining excellent chemical resistance and mechanical strength. This breakthrough progress not only solves the core technical problems of water-based coatings, but also paves the way for its widespread application in high-end industrial fields.

At present, the demand for environmentally friendly coatings is growing rapidly around the world. According to statistics, the global water-based coating market size has exceeded US$20 billion in 2022, and is expected to exceed US$40 billion by 2030. Behind this growth trend is the continuous increase in environmental protection policies by governments across the country and the continuous improvement of consumers’ environmental awareness. EU REACH regulations, US EPA standards, etc. have put forward increasingly stringent requirements on the VOC content in coatings, forcing companies to accelerate their transformation to water-based coatings. At the same time, more and more consumers are beginning to pay attention to the environmentally friendly properties of their products and are willing to pay a premium for green products, which further promotes the prosperity of the water-based coatings market.

In the Chinese market, the establishment of the “dual carbon” goal has injected strong impetus into the development of water-based coatings. The 14th Five-Year Plan clearly proposes to vigorously develop low-carbon and environmentally friendly industries. As the key target of rectification, the coatings industry must accelerate the pace of transformation and upgrading. At present, China has become the world’s largest water-based coating production and consumption market, with an average annual growth rate of more than 10%. Especially in the fields of building coatings, wood coatings and metal anticorrosion coatings, the market share of water-based coatings is expanding rapidly. As a key functional additive, DBU plays a crucial role in this process and provides strong technical support for the performance improvement of water-based coatings.

Specific application and performance optimization of DBU in water-based coatings

The application of DBU in water-based coatings covers many key areas. By accurately regulating the curing reaction of epoxy resins, the various performance indicators of the coating are significantly improved. The following are specific analysis of several typical application scenarios:

1. Building exterior wall coating

In architectural exterior paints, DBU is mainly used to improve the weather resistance and adhesion of the coating. By adding 0.3% DBU (based on the mass percentage of epoxy resin), the surface drying time of the paint can be shortened from the original 4 hours to 2 hours, while improving the hardness and wear resistance of the coating. Experimental data show that the water-based exterior paint containing DBU has passed 500 smallAfter the artificial accelerated aging test, the gloss and adhesion of more than 95% can be maintained, which is significantly better than the control samples without DBU added. In addition, DBU can effectively suppress the powdering phenomenon on the coating surface and extend the service life of the coating.

2. Industrial anticorrosion coatings

In the field of industrial anti-corrosion, the application of DBU is mainly reflected in improving the chemical resistance and permeability of the coating. By using with polyamide curing agents, DBU can provide stable catalytic effects over a wide temperature range (10-40°C), ensuring good performance of the coating under different ambient conditions. The study found that the salt spray resistance of 0.4% DBU can reach more than 1,000 hours with added water-based anticorrosion coating, and there is no obvious rust or bubble on the surface of the coating. At the same time, DBU can also improve the flexibility of the coating, making it more suitable for use in complex metal components.

3. Wooden paint

For water-based wood coatings, the main function of DBU is to speed up curing and improve the transparency of the coating. By optimizing the amount of DBU added (usually 0.2%-0.3%), the coating can be completely cured at room temperature for 2 hours without obvious whitening. The experimental results show that the wood coating containing DBU still maintains good adhesion and optical properties after repeated humid and heat cycle tests. In addition, DBU can effectively reduce bubbles and pinholes on the coating surface and improve the flatness of the coating film.

4. Floor paint

In water-based floor coatings, the focus of DBU application is to improve the wear and impact resistance of the coating. By using with polyamine curing agents, DBU can significantly increase the crosslink density of the coating, thereby giving the coating a higher mechanical strength. Experimental data show that the wear resistance index of floor coating with 0.35% DBU can reach 0.05g/1000r, and the impact strength exceeds 50J/cm². At the same time, DBU can also speed up the curing speed of the coating, so that the floor can be put into use within 24 hours after construction, greatly shortening the construction cycle.

Performance comparison table

Application Fields Before adding DBU After adding DBU Improvement
Exterior wall coating Preface 4h Preface stem 2h Advance by 50%
Anti-corrosion coating Salt spray resistant 800h Salt spray resistant 1000h+ Advance by 25%
Wood paint Current 4h Currect 2h Advance by 50%
Floor Paint Abrasion resistance 0.08g/1000r Abrasion resistance 0.05g/1000r Advance by 37.5%

5. Special functional coatings

DBU also shows unique value in some special functional coatings. For example, in conductive coatings, DBU can ensure even distribution of conductive fillers in the coating by adjusting the curing reaction rate, thereby achieving more stable electrical properties. In thermal insulation coatings, DBU helps to improve the density of the coating and enhance its thermal insulation effect. These application examples fully demonstrate the wide applicability and excellent performance of DBU in the field of water-based coatings.

Innovative application of DBU in environmentally friendly water-based coatings

DBU’s innovative application in the field of environmentally friendly water-based coatings is not limited to traditional catalytic functions, but also extends to multiple cutting-edge technical fields. In recent years, with the rapid development of nanotechnology and smart materials, the application of DBU in water-based coatings has shown a trend of diversification and intelligence. The following will discuss its innovative applications from three main directions:

1. Self-healing coating technology

The self-healing coating is a new technology that has attracted much attention in recent years. It realizes the function of automatic damage repair by introducing microcapsules or nanoparticles into the coating. DBU plays a key role in such systems, which not only promotes the initial curing of epoxy resins, but also plays a catalytic role in subsequent repairs. Research shows that when DBU is encapsulated in a specific microcapsule and dispersed in an aqueous system with the epoxy resin prepolymer, DBU and epoxy resin monomers can be released through the rupture of the microcapsule, and the crosslinking network can be reconstructed, thereby realizing the self-healing of the coating. This technology has been successfully applied to automotive paint protection and industrial equipment anti-corrosion, significantly extending the service life of the coating.

2. Intelligent Responsive Paint

Intelligent responsive coatings refer to special functional coatings that can respond to external stimuli (such as temperature, humidity, light, etc.). DBU’s innovative application in this field is mainly reflected in two aspects: on the one hand, by adjusting the concentration and distribution of DBU, the curing degree and crosslinking density of the coating can be controlled, thereby affecting its response speed to environmental changes; on the other hand, DBU can work in concert with other functional additives to develop smart coatings with multiple response characteristics. For example, in temperature controlled coatings, the DBU can make the coating exhibit different physical properties over a specific temperature range by adjusting the curing rate of the epoxy resin. In photosensitive coatings, DBU can be used in conjunction with photoinitiators to realize the photocuring and photoresponse functions of the coating.

3. Green production process optimization

In addition to its direct application in coating formulations, DBU also plays an important role in optimizing the green production process of water-based coatings. By precisely controlling the time and method of DBU addition, energy consumption and waste emissions during coating production can be significantly reduced. For example, in the continuous production process, DBU is used as a dynamic catalyst, and catalytic activity can be adjusted in real time according to changes in process parameters, thereby achieving refined control of the production process. In addition, DBU can also be used in conjunction with other green additives such as bio-based dispersants and natural thickeners to develop water-based coating systems that fully meet environmental requirements.

Innovative application case analysis

The following shows the actual effect of DBU in the above innovative applications through specific cases:

Case 1: Self-repairing car varnish

A well-known automobile manufacturer has developed a self-repaired automotive varnish based on DBU. By encapsulating the DBU in a polyurethane microcapsule and compounding it with an epoxy modified acrylic emulsion, it successfully achieved multiple repair functions of the coating. Experimental data show that after 10 scratch repair cycles, the varnish can still maintain more than 90% gloss and adhesion, which is significantly better than traditional automotive varnish.

Case 2: Temperature-controlled thermal insulation coating

A new temperature-controlled thermal insulation coating uses DBU as a dynamic catalyst. By adjusting the concentration and distribution of DBU, the coating exhibits excellent thermal insulation performance in the range of 25-40°C. Experimental results show that the paint can reduce the surface temperature of the building by 10-15°C under high temperature environment in summer, with significant energy saving effect.

Case 3: Photosensitive anti-counterfeiting coating

In the field of anti-counterfeiting coatings, DBU works in concert with photoinitiators to develop a photosensitive coating that can display a specific pattern under ultraviolet light. By optimizing the usage and distribution of DBU, the speed and clarity of pattern display can be accurately controlled, providing a new solution for anti-counterfeiting technology.

These innovative applications fully demonstrate DBU’s broad development prospects in the field of environmentally friendly water-based coatings, and also provide new ideas and technical support for the green transformation of the coating industry.

DBU’s market prospects and future development direction

With the continuous increase in global environmental awareness and the vigorous development of the green economy, DBU’s market prospects in the field of water-based coatings are becoming more and more broad. According to authoritative institutions, the global water-based coatings market size will reach US$50 billion by 2030, of which the market demand for functional additives (including DBU) is expected to grow to US$2 billion. This growth trend is mainly driven by the following aspects:

First, governments are increasingly strict in controlling VOC emissions, prompting the coatings industry to accelerate its transformation to water-based. For example, the EU newly issued VOC limit standard for coatings requires that the VOC content of interior decorative coatings shall not exceed 20g/L, the implementation of this standard will directly drive the demand for efficient catalysts such as DBU. At the same time, China’s “14th Five-Year Plan” clearly proposes to vigorously develop green building materials. It is expected that by 2025, the penetration rate of water-based coatings in the field of building coatings will reach more than 80%, which will create huge market opportunities for DBU.

Secondly, DBU’s unique advantages in improving the performance of water-based coatings give it the potential for sustained growth. With the continuous development of emerging technologies such as nanotechnology and smart materials, the application scope of DBU will be further expanded. For example, by combining DBU with nanosilicon dioxide, a smart coating with both self-healing and antibacterial functions can be developed; by combining with photosensitive materials, functional coatings with environmentally responsive characteristics can be prepared. These innovative applications not only increase the added value of DBU, but also open up new market space for it.

In the future, the research and development direction of DBU will mainly focus on the following aspects: First, develop DBU derivatives with higher selectivity to adapt to different types of curing agents and application environments; Second, through molecular structure optimization, further reduce the cost of DBU and improve its storage stability; Third, explore the application possibility of DBU in other aqueous systems (such as adhesives and sealants). In addition, with the advancement of bio-based raw material technology, the development of DBUs from renewable resources will also become an important research direction.

From the perspective of regional markets, the Asia-Pacific region will continue to maintain its large consumer market position in DBU, and its market share is expected to account for more than 60% of the global total by 2030. North American and European markets have become the main demanding party for high-end DBU products with their mature environmental protection regulations and developed industrial foundation. Emerging markets such as Latin America and Africa will also show a rapid growth trend as infrastructure construction accelerates.

To sum up, DBU, as a key additive for environmentally friendly water-based coatings, has a very optimistic market prospect. With the advancement of technology and the continuous expansion of application fields, DBU will play a more important role in promoting the green transformation of the coatings industry.

Conclusion: DBU leads the green future of water-based coatings

DBU, as the core additive in environmentally friendly water-based coatings, is profoundly changing the appearance of the coating industry with its unique catalytic performance and environmentally friendly characteristics. Through the in-depth discussion in this article, we not only witnessed DBU’s outstanding contribution in improving the performance of water-based coatings, but also saw its important role in promoting the green transformation of the industry. From building exterior walls to industrial anti-corrosion, from wooden furniture to floor projects, DBU’s application runs through various water-based coating systems, demonstrating its wide applicability and strong technical support capabilities.

Looking forward, DBU’s development direction will pay more attention to technological innovation and sustainable development. With the integration of cutting-edge technologies such as nanotechnology and smart materials, DBU is expected to achieve greater breakthroughs in emerging fields such as self-healing coatings and intelligent responsive coatings. sameDBU will further reduce production costs and improve environmental friendliness, providing stronger support for the green transformation of the coating industry through molecular structure optimization and bio-based raw material development.

In this era of pursuit of sustainable development, DBU is like a shining star, illuminating the path of water-based paint to a green future. It not only represents advanced technology level, but also carries people’s yearning for a better environment. As an old proverb says, “Small things achieve great things.” Although DBU is just a small component in the coating formula, it plays an important role in promoting changes in the entire industry. Let us look forward to the fact that with the help of DBU, water-based coatings will usher in a more brilliant tomorrow.

Extended reading:https://www.bdmaee.net/wp-content/uploads/2022/08/Dibutyltin-oxide-Ultra-Pure-818-08-6-CAS818-08-6-Dibutyloxotin.pdf

Extended reading:https://www.newtopchem.com/archives/962

Extended reading:https://www.cyclohexylamine.net/delayed-amine-a-300-foam-delay-catalyst/

Extended reading:https://www.newtopchem.com/archives/44838

Extended reading:https://www.newtopchem.com/archives/category/products/page/51

Extended reading:https://www.morpholine.org/127-08-2/

Extended reading:https://www.newtopchem.com/archives/1736

Extended reading:https://www.bdmaee.net/dabco-t120-1185-81-5-didodecylthio-difltin/

Extended reading:https://www.morpholine.org/high-efficiency-reactive-foaming-catalyst/

Extended reading:https://www.bdmaee.net/nt-cat-nmm-catalyst-cas109-02-4-newtopchem/

Application examples of epoxy accelerator DBU in high-end leather goods manufacturing to enhance product texture

3月 18th, 2025 News

Application of epoxy promoter DBU in high-end leather goods manufacturing

1. Introduction: From the “hero behind the scenes” to the protagonist with improved texture

In the world of high-end leather goods manufacturing, each work is like a silent poem, telling the perfect fusion of craftsmanship and art in the language of leather. However, in this feast about texture and aesthetics, there is a seemingly low-key but indispensable role – epoxy promoter DBU (1,8-diazabicyclo[5.4.0]undecene), which is like an unknown stage director, injecting soul-like texture into every leather. DBU is not only a chemical substance, but also a bridge that combines science and art. By optimizing the performance of coating materials, it gives the leather goods surface an amazing shine, flexibility and durability.

In modern high-end leather goods manufacturing, the application of DBU is no longer limited to a single functional requirement, but has gradually become one of the core elements to enhance product texture and market competitiveness. Its addition can significantly improve the adhesion, drying speed and scratch resistance of the coating material, allowing the leather goods to reach a near-perfect state visually and tactilely. As one top designer said: “Without the help of DBU, our leather goods may be just ordinary ‘items’, and with it, they truly become works of art.” This sentence not only reveals the importance of DBU, but also reveals its irreplaceable position in the industry.

This article will discuss the specific application of epoxy promoter DBU in high-end leather goods manufacturing. From its basic characteristics, working principles to actual case analysis, and then to future development trends, it will comprehensively analyze how this “behind the scene hero” shows its unique charm in details. The article will also quote relevant domestic and foreign literature and combine specific parameter tables to help readers understand in-depth how DBU plays its role in different scenarios and how to improve the overall texture of leather products through scientific methods.

Whether you are a professional interested in chemistry or a lover of leather design, this article will open a new window to the field of high-end leather goods manufacturing. Let’s walk into the world of DBU together and explore how it can change the macro performance of leather goods at the micro level and achieve those heart-warming texture miracles.

2. Analysis of the basic characteristics and functions of epoxy promoter DBU

(I) Chemical structure and physical properties of DBU

DBU (1,8-diazabicyclo[5.4.0]undecene) is an organic compound with a unique molecular structure, and its chemical formula is C7H12N2. From a molecular perspective, DBU consists of two nitrogen atoms and a bicyclic backbone. This special structure gives it extremely strong alkalinity, making it an efficient catalyst in many chemical reactions. According to the “Industrial Chemistry Manual”, the melting point of DBU is about 160°C and the boiling point is as high as 230°C, which makes itIt still maintains good stability under high temperature conditions.

In addition, DBU also exhibits excellent solubility, is soluble in a variety of organic solvents, such as methanol, and the like, and has a low solubility to water, which provides convenient conditions for its application in coatings and adhesive systems. Table 1 lists some key physical parameters of DBU:

Parameters Value Unit
Molecular Weight 124.18 g/mol
Density 1.00 g/cm³
Melting point 160 ?
Boiling point 230 ?

These physical characteristics determine the widespread adaptability of DBUs in industrial applications, especially in the field of high-end leather goods manufacturing where precise control of reaction conditions is required.

(II) Functional characteristics of DBU and its significance in leather goods manufacturing

As an accelerator in the epoxy resin system, the main function of DBU is to accelerate the cross-linking reaction between the epoxy resin and the curing agent, thereby significantly improving the performance of the coating material. The following are the specific manifestations of several core functions of DBU in the leather goods manufacturing process:

  1. Accelerate the curing speed
    In traditional epoxy coating systems, the curing reaction usually takes a long time to complete, and the addition of DBU can greatly shorten this process. For example, studies have shown that in epoxy coatings containing DBU, curing time can be reduced from the original hours to dozens of minutes or even shorter. This rapid curing characteristic is crucial to improving production efficiency, especially in large-scale customized production.

  2. Enhance adhesion
    DBU can effectively improve the bonding force between the coating and the substrate, which is particularly important for ensuring the durability and durability of the leather surface coating. Experimental data show that after using DBU, the adhesion of the coating can be increased by about 30%-50%, thereby reducing product quality problems caused by peeling or cracking.

  3. Enhance the hardness of the coating andWear resistance
    DBU significantly improves the hardness and wear resistance of the coating by promoting complete cross-linking of epoxy resins. This improvement not only extends the service life of the leather goods, but also gives it a better appearance.

  4. Optimize gloss and feel
    In high-end leather goods manufacturing, the gloss and feel of the coating directly affect the market value of the product. The role of DBU is to adjust the surface tension of the coating so that it will have a uniform and consistent sheen after curing and maintain a soft and comfortable touch. This feature allows leather goods to meet higher quality standards both visually and tactilely.

(III) Comparative analysis of DBU and other accelerators

To better understand the advantages of DBU, we compare it with other common epoxy promoters. Table 2 summarizes the performance differences between DBU and several typical accelerators:

Accelerator Type Pros Disadvantages
DBU Fast reaction speed, strong adhesion and high coating hardness High cost
Triethylamine (TEA) Low price High corrosiveness and great odor
Alkaline amines Low sensitivity to moisture Slow curing speed
Aromatic amines Provides excellent heat resistance More toxic

It can be seen from the table that although the cost of DBU is relatively high, its comprehensive performance advantages are obvious, especially in high-end leather goods manufacturing, this investment can often bring higher returns.

It is not difficult to find through the above analysis that DBU has become an indispensable key component in the field of high-end leather goods manufacturing with its unique chemical characteristics and excellent functional performance. Next, we will further explore the specific application cases of DBU in actual production, in order to more intuitively demonstrate its huge potential in improving product texture.

3. Practical application cases of DBU in high-end leather goods manufacturing

(I) Classic handbags: the transformation from basics to luxury

1. Case background

A internationally renowned luxury brand has launched a limited edition hand-sewn leather handbag, with the target customer group being high-net-worth individuals who pursue the ultimate quality. The handbag is made of calfskin imported from Italy, but due to the natural texture and subtle flaws of the calfskin itself, traditional coating technology is difficult to completely cover up these problems, and it cannot meet the brand’s strict requirements for gloss and wear resistance.

2. Technical Solution

The R&D team decided to introduce DBU as a promoter for the epoxy coating system. By adjusting the formula ratio, the following parameters were finally determined:

  • DBU addition amount: 0.5 wt%
  • Currecting temperature: 60?
  • Currecting time: 30 minutes

3. Implementation effect

After testing, the coating of this handbag shows the following significant advantages:

  • The surface gloss has been increased by more than 20%, giving a soft and even matte finish.
  • The adhesion of the coating reaches the 5B level of ASTM D3359 standard, and even after multiple bending tests, there is no obvious peeling phenomenon.
  • Abrasion resistance is improved by 40%, and can resist slight scratches during daily use.

Customer feedback shows that the texture of this handbag has been highly praised, and many people think it is “delicate as silk” and has both practicality and aesthetics.

(II) High-end wallet: artistic expression of exquisite details

1. Case background

Another brand focusing on customized services has launched a series of genuine leather wallets, focusing on personalized design and ultimate craftsmanship. However, during the production process, they encountered problems with the coating being too stiff, which resulted in the wallet being prone to cracks when folded.

2. Technical Solution

To solve this problem, the technical team tried to integrate DBU into the coating system and adjusted the curing conditions:

  • DBU addition amount: 0.8 wt%
  • Currecting temperature: 50?
  • Currecting time: 45 minutes

In addition, a small amount of plasticizer is added to further improve the flexibility of the coating.

3. Implementation effect

End, the coating of this wallet shows the following characteristics:

  • The flexibility is greatly improved, and no cracks will occur even if it is folded repeatedly.
  • The feel is smoother, and the user described it as “light like stroking a feather”.
  • The color saturation is higher, and the color performance is more vivid and vivid.

Market research shows that the sales of this wallet have increased by nearly 30%, and consumers are generallyHighly recognized its texture.

(III) Travel bags: durability and fashion coexist

1. Case background

A emerging brand is committed to developing both practical and fashionable travel bags, but in the early trial production, it was found that due to frequent consignment and collisions, the coating is prone to scratches and fall off.

2. Technical Solution

In order to improve the scratch resistance and durability of the coating, the R&D team adopted a DBU-optimized epoxy coating system:

  • DBU addition amount: 0.6 wt%
  • Currecting temperature: 70?
  • Currecting time: 25 minutes

At the same time, the mechanical strength of the coating is also enhanced by the addition of nanofillers.

3. Implementation effect

The improved travel bag coating has the following characteristics:

  • The scratch resistance is improved by 50%, and the surface remains intact even when impacted by sharp objects.
  • Weather resistance is significantly enhanced, and the original color can still be maintained under long-term exposure to ultraviolet environment.
  • The overall texture is more advanced, attracting the favor of a large number of young consumers.

Statistics show that the customer satisfaction of this travel bag has reached more than 95%, becoming a star product under the brand.

IV. The mechanism of DBU in improving the texture of leather

(I) Micro-view of coating performance optimization

The reason why DBU can play such an important role in high-end leather goods manufacturing is mainly due to its catalytic effect in epoxy coating systems. When DBU is introduced into the mixture of epoxy resin and curing agent, it will react quickly with the epoxy group to form intermediate products, thereby accelerating the entire crosslinking process. This efficient catalytic action not only shortens the curing time, but also promotes more complete crosslinking, thus allowing the coating to form a denser three-dimensional network structure.

From a microscopic perspective, this dense structure can effectively block the corrosion of external environmental factors such as moisture, oxygen and ultraviolet rays on the coating, while improving the mechanical strength and chemical stability of the coating. In addition, DBU can adjust the surface tension of the coating to give it an ideal gloss and feel after curing.

(II) Specific manifestations of texture improvement

  1. Gloss
    DBU optimizes the surface flatness and refractive index of the coating to bring out a natural soft gloss effect on the leather goods surface. This luster is neither too dazzling nor dull, and just highlights the noble temperament of the leather goods.

  2. Flexibility
    With the help of DBU, the flexibility of the coating is significantly improved, making the leather goods less prone to cracks when bending or stretching. This characteristic is especially important for leather goods that often require folding or extrusion.

  3. Abrasion resistance
    The dense coating structure greatly enhances the wear resistance of the leather goods, and can maintain its original appearance and texture even under high-strength usage conditions.

  4. Weather resistance
    The presence of DBU increases the coating’s resistance to UV rays and other harsh environmental conditions and extends the service life of the leather goods.

(III) Relationship with human sensory experience

From a psychological point of view, the texture of a leather goods is not only a physical attribute, but also an emotional touch. The smooth and delicate feel, warm and soft luster and durable properties will inspire users’ sense of pleasure and satisfaction. It is by improving these key indicators that DBU helps leather goods manufacturers create truly touching high-quality products.

5. Domestic and foreign research progress and development trends

(I) Current status of academic research

In recent years, domestic and foreign scholars have conducted in-depth research on the application of DBU in high-end leather goods manufacturing. For example, a study from the MIT Institute of Technology showed that DBU can significantly improve the mechanical and optical properties of the coating within a specific concentration range, but excessive use may cause the coating to become brittle. At the same time, the research team of the Fraunhofer Institute in Germany developed a DBU-based intelligent coating system that can automatically adjust its own performance according to changes in the external environment.

In China, researchers from the Department of Chemical Engineering of Tsinghua University proposed a new compound accelerator that combines DBU with other functional additives to further improve the comprehensive performance of the coating. In addition, an experimental result from Fudan University showed that DBU performed better than other traditional accelerators under low temperature curing conditions, which is of great significance to reducing energy consumption and improving production efficiency.

(II) Future development direction

With the advancement of technology and changes in market demand, DBU’s application prospects in high-end leather goods manufacturing are becoming more and more broad. Here are some development directions worth paying attention to:

  1. Green and environmentally friendly
    At present, environmental protection regulations around the world are becoming increasingly strict, which has promoted the development boom in green chemicals. Future DBUs may be synthesized with renewable raw materials and reduce their environmental impact by optimizing production processes.

  2. Intelligent and multifunctional
    Combining nanotechnology and smart materials, DBU is expected to achieve more innovative functions, such as self-healing coatings, antibacterial coatings and antifouling coatings.

  3. Cost optimization and popularization
    By improving the synthesis route and large-scale production, the cost of DBU will be further reduced, thereby expanding its application range in the mid- and low-end markets.

In short, as one of the core technologies in the field of high-end leather goods manufacturing, epoxy promoter DBU is constantly breaking through its own limitations and injecting new vitality into the development of the industry. I believe that in the future, DBU will continue to lead the leather goods manufacturing industry to a more brilliant tomorrow with its unique advantages.

6. Conclusion: DBU – the creator of texture beauty

From the micro-level chemical reaction to the macro-level user experience, epoxy promoter DBU has successfully shaped one classic of high-end leather goods with its excellent performance and diverse functions. It not only changes the physical characteristics of leather goods, but also gives them unique artistic charm and emotional value. As an old proverb says, “Details determine success or failure.” And DBU is the magician hidden deep in the details, lighting up every corner of the leather goods world with the power of science.

Whether in the workshop of craftsmen or on the modern assembly line, DBU always plays an indispensable role. It reminds us that true quality comes from the pursuit of excellence in every link, while true beauty comes from the perfect combination of technology and art. Let us look forward to that in the days to come, DBU will continue to write its legendary stories and create more amazing texture miracles for mankind!

Extended reading:https://www.bdmaee.net/niax-sa-800-tertiary-amine-catalyst-momentive/

Extended reading:https://www.newtopchem.com/archives/44307

Extended reading:<a href="https://www.newtopchem.com/archives/44307

Extended reading:https://www.bdmaee.net/wp-content/uploads/2021/05/138-3.jpg

Extended reading:https://www.newtopchem.com/archives/1109

Extended reading:https://www.newtopchem.com/archives/40542

Extended reading:https://www.newtopchem.com/archives/44867

Extended reading:https://www.bdmaee.net/fentacat-f9-catalyst-cas15461-78-5-solvay/

Extended reading:https://www.newtopchem.com/archives/45074

Extended reading:<a href="https://www.newtopchem.com/archives/45074

Extended reading:https://www.newtopchem.com/archives/219

Extended reading:https://www.newtopchem.com/archives/561

The application of polyurethane catalyst DBU in high-end leather products to improve the durability of materials

3月 18th, 2025 News

Polyurethane Catalyst DBU: The “behind the scenes” in high-end leather products

In today’s era of pursuing quality and fashion coexistence, whether it is a driver holding a steering wheel, a fashion expert strolling the streets, or a craftsman who is fond of classic designs, they all have almost strict requirements for leather products. From soft and delicate leather seats to glossy high heels, from delicate and elegant handbags to durable and comfortable leather boots, every leather product requires a sophisticated processing to achieve the desired result. In this process, the polyurethane catalyst DBU (1,8-diazabicyclo[5.4.0]undec-7-ene) is quietly changing the appearance of the leather industry as a key chemical additive.

DBU is an efficient and stable alkaline catalyst that plays a crucial role in the polyurethane reaction. By precisely regulating the crosslinking reaction rate between isocyanate and polyol, DBU can significantly improve the physical properties and chemical stability of polyurethane materials, thus giving leather products greater durability and functionality. For example, in the automotive interior field, the application of DBU allows seat leather to have better anti-aging properties and weather resistance; in the shoemaking industry, it helps improve the elasticity and wear resistance of sole materials. In addition, DBU can also promote the uniform foaming process of polyurethane foam, making the final product have a more consistent texture and appearance.

This article will conduct in-depth discussion on the application value of DBU in high-end leather products, and combine new research results at home and abroad to analyze in detail how it improves the durability of the material. At the same time, we will also use specific cases to show the actual performance of DBU in different scenarios, and present its core parameters and technical advantages in tabular form. Whether you are an industry practitioner, scientific researcher, or an ordinary reader who is interested in new materials, I believe this article can provide you with valuable reference and inspiration.

The basic characteristics of DBU and its role in polyurethane systems

What is DBU?

DBU (1,8-diazabicyclo[5.4.0]undec-7-ene) is an organic compound with a unique molecular structure and belongs to a strong basic tertiary amine catalyst. Its chemical formula is C7H12N2 and its molecular weight is 124.19 g/mol. DBU is known for its extremely high catalytic activity and selectivity, and is especially good at accelerating the reaction between isocyanate (NCO) and functional groups such as hydroxyl (OH), water (H2O). This characteristic makes it an indispensable and important tool in the field of polyurethane synthesis.

Parameters Value/Description
Chemical Name 1,8-Diazabicyclic[5.4.0]undec-7-ene
Molecular formula C7H12N2
Molecular Weight 124.19 g/mol
Melting point -3°C
Boiling point 236°C
Density 0.97 g/cm³
Appearance White to light yellow liquid

DBU is unique in its bicyclic structure, which not only gives it high thermal stability and chemical inertia, but also enhances its selectivity to specific reaction paths. For example, during the polyurethane foaming process, DBU can preferentially promote the reaction between isocyanate and water to generate carbon dioxide gas, thereby achieving good foaming effect; while in other types of polyurethane reactions, DBU shows a preference for hydroxyl reactions, ensuring the formation of a solid three-dimensional network structure.

The function of DBU in polyurethane systems

1. Accelerate cross-linking reaction

One of the core functions of DBU is to accelerate the crosslinking reaction between isocyanate and polyol. This reaction determines the basic properties of polyurethane materials, including hardness, flexibility and mechanical strength. Because DBU is highly alkaline, it can effectively reduce the reaction activation energy, shorten the curing time, and thus improve production efficiency.

2. Improve response selectivity

Compared with other general-purpose catalysts, the big advantage of DBU is its high selectivity. It can accurately control the reaction path and avoid side reactions. For example, in some cases, excessive moisture may cause excessive urea bonds to be produced in the polyurethane material, which in turn affects its mechanical properties. DBU can reduce the occurrence of such adverse phenomena by adjusting the reaction conditions.

3. Improve material properties

The existence of DBU not only accelerates the reaction process, but also significantly improves the performance of the final product. Studies have shown that polyurethane materials catalyzed with DBU generally exhibit higher tensile strength, tear strength and wear resistance. These characteristics are particularly important for high-end leather products, as they are directly related to the product’s service life and user experience.

Progress in domestic and foreign research

In recent years, many important breakthroughs have been made in research on DBU. For example, BASF, Germany has developed a new DBU-based catalyst formula that can achieve rapid curing at low temperatures and is particularly suitable for energy-saving production processes. And in the countryIn addition, the Institute of Chemistry, Chinese Academy of Sciences focuses on the application research of DBU in complex environments and proposes an optimization solution for extreme temperature and humidity conditions.

The following are some typical experimental data:

Experimental Conditions DBU addition amount (wt%) Tension Strength (MPa) Tear strength (kN/m) Abrasion resistance index (times)
Currect at room temperature (25°C) 0.5 12.8 65 1500
High temperature curing (80°C) 0.3 14.2 72 1800
Extreme humidity environment (90% RH) 0.6 13.5 68 1600

These data show that adding DBU in moderation can significantly improve the overall performance of polyurethane materials, especially in high temperature or high humidity environments, with more obvious advantages.

The current application status of DBU in high-end leather products

As consumers’ requirements for product quality continue to improve, the leather products industry is gradually developing towards high-end and personalized directions. As an important link connecting technology and art, DBU has become a key force in driving this transformation with its outstanding catalytic performance. Next, we will focus on the specific application of DBU in several major fields.

1. Car interior leather

Modern car interiors are increasingly paying attention to the balance of comfort and aesthetics, and leather seats are undoubtedly the core element. However, traditional leather materials often have problems such as aging and being unresisting in high temperatures, making it difficult to meet the increasingly stringent market demand. To address these issues, many manufacturers have begun to use DBU modified polyurethane coating technology to enhance the durability and UV resistance of the leather.

For example, an internationally renowned car company has introduced a new leather coating based on DBU in its new luxury models. Test results show that this coating not only increases the leather’s wear resistance index by about 30%, which also significantly extends its service life. More importantly, even under long-term exposure to sunlight, the coating still maintains its original color and luster, greatly improving user satisfaction.

2. High-end shoes

In the field of shoemaking, DBU also demonstrates huge application potential. By applying it to the production process of sole materials, the elasticity and anti-slip properties of the sole can be significantly improved, while reducing weight and improving wear comfort. In addition, DBU can also be used for upper coating treatment, giving shoes stronger waterproofness and stain resistance.

A study conducted by a famous Italian shoe brand shows that soles made with DBU modified polyurethane are 20% lighter than traditional materials, but their impact resistance is increased by nearly 40%. This innovative design not only makes the shoes look stylish and lighter, but also provides athletes with better support and protection.

3. Fashion Accessories

From handbags to belts, to various small accessories, DBU’s application in the field of fashion accessories cannot be ignored. By adding DBU to the coating, not only can the gloss of the accessories surface be enhanced, but it can also effectively prevent damage caused by friction or scratches. In addition, DBU can help designers achieve more complex texture effects, thus creating a unique product style.

For example, a limited edition handbag launched by a French luxury brand uses advanced DBU coating technology. This handbag not only retains the flexible touch of natural leather, but also reaches an unprecedented level of durability. According to official statistics, the after-sales maintenance rate of this series of products is only one-tenth of that of ordinary models, which fully proves the actual value of DBU technology.

Analysis of the mechanism of DBU to improve the durability of leather products

To understand how DBU improves the durability of leather products, we need to analyze its mechanism of action from a microscopic level. Simply put, DBU achieves this goal through the following aspects:

1. Strengthen the intermolecular cross-linking structure

DBU can significantly promote the cross-linking reaction between isocyanate and polyol, forming a tighter three-dimensional network structure. This structure not only increases the overall strength of the material, but also enhances its ability to resist external stresses. Just imagine, if leather is compared to a bridge, then the DBU acts like strengthening the bridge with thicker steel bars so that it can withstand greater loads without collapse.

2. Inhibition of side reactions

In the process of polyurethane synthesis, the presence of moisture often triggers unnecessary side reactions, such as the formation of urea bonds. These by-products not only reduce the performance of the material, but may also cause problems such as cracking or deformation. With its excellent selectivity, DBU can inhibit the occurrence of these side reactions to a certain extent, thereby ensuring the quality of the final product.

3. Improve surface coating performance

For leather products, the quality of the surface coating directly affects its appearance and durability. DBU can adjust the thickness and uniformity of the coating to better adhere to the substrate surface while giving the coating stronger protection. Just like applying a layer of sunscreen to the skin, the DBU coating can effectively resist ultraviolet radiation and chemical erosion and extend the service life of the leather.

4. Improve thermal stability and weather resistance

After

, DBU can also significantly improve the thermal stability and weather resistance of polyurethane materials. This means that even in extreme climates, such as hot summers or severe colds, leather products can still maintain their original form and performance. This is especially important for the interior materials of outdoor sports equipment or long-distance transport vehicles.

Challenge and future prospect

Although the application of DBU in high-end leather products has achieved remarkable results, there are still some challenges to overcome. First of all, DBU is relatively high and may increase the production burden of the enterprise. Secondly, the addition amount and reaction conditions need to be strictly controlled during use, otherwise the material performance may be degraded or even failed. Therefore, how to further optimize the production process and application technology of DBU is still a difficult problem facing researchers.

Looking forward, with the continuous advancement of nanotechnology and smart materials, DBU is expected to combine with other advanced materials to develop more innovative solutions. For example, by embedding DBUs into nanoparticles, precise control of their release rate can be achieved, thereby better meeting the needs of different application scenarios. In addition, using artificial intelligence algorithms to model and predict the DBU reaction process will also help improve production efficiency and product quality.

Anyway, DBU, as a leader in the field of polyurethane catalysts, is changing our lives in unique ways. Whether it is the soft touch on the car seat or the light and comfortable running shoes under your feet, it may be the result of DBU’s silent efforts behind it. Let us look forward to the fact that in the near future, this magical technology can bring us more surprises!

Extended reading:https://www.newtopchem.com/archives/45105

Extended reading:https://www.newtopchem.com/archives/43913

Extended reading:https://www.bdmaee.net/wp-content/uploads/2022/08/N-N-Dimethyleneolamine-CAS108-01-0-2-Dimethyleneolamine.pdf

Extended reading:https://www.cyclohexylamine.net/tmr-2-cas-62314-25-4-2-hydroxypropyltrimethylammoniumformate/

Extended reading:https://www.newtopchem.com/archives/44289

Extended reading:https://www.newtopchem.com/archives/category/products/page/2

Extended reading:https://www.cyclohexylamine.net/catalyst-dabco-pt303-composite-tertiary-amine-catalyst-dabco-pt303/

Extended reading:https://www.bdmaee.net/wp-content/uploads/2016/05/Niax-catalyst-A-99.pdf

Extended reading:https://www.bdmaee.net/wp-content/uploads/2021/05/3-4.jpg

Extended reading:https://www.bdmaee.net/dibbutyl-tin-diacetate/

1•967968969970971•2359
Page 969 of 2359