Category: PU Technology

Polycat 41 catalyst CAS10294-43-5 Evonik Germany – BDMAEE

Polycat DBU catalyst CAS6674-22-2 Evonik Germany – BDMAEE

Dibutyltinoctyl esters: chemical properties and applications

Introduction

Dibutyltinoctyl ester compounds are an important class of organotin compounds that are widely used in the plastics industry, especially as heat stabilizers in polyvinyl chloride (PVC) processing. Their chemical structure and properties allow these compounds to play key roles in several industrial sectors. This article will delve into the chemical properties, synthesis routes, application fields of dibutyltinoctyl ester compounds and their impact on the environment and health.

Chemical Properties

The general structural formula of dibutyltinoctyl ester compounds can be expressed as R1R2Sn(OR3)2, where R1 and R2 usually represent butyl (Bu), and R3 represents an octyl ester group (such as isooctyl ester). These compounds are colorless to light yellow transparent liquids with good thermal and chemical stability. Their molecular structure enables them to effectively react with hydrogen chloride (HCl) in PVC, inhibiting the degradation of PVC during heating, thereby maintaining the physical properties and appearance of PVC products.

Synthetic pathway

Dibutyltin octyl ester compounds can be synthesized in a variety of ways. A common method is to react dibutyltin oxide with an octyl ester-based alcohol or acid. For example, dibutyltin oxide reacts with isooctyl thioglycolate to form bis(isooctylthioglycolate) dibutyltin. These reactions are usually carried out under specific temperature and pressure conditions, sometimes requiring the use of catalysts to increase yield and purity.

Application fields

PVC heat stabilizer: As a heat stabilizer, dibutyltinoctyl ester compounds are widely used in the processing of PVC products, especially soft PVC and products requiring high transparency. They can effectively prevent thermal degradation of PVC during processing and maintain the transparency and color stability of products.
Catalyst: In organic synthesis, these compounds can also be used as catalysts to participate in various chemical reactions, such as the curing process of polysiloxane.
Coatings and Inks: As additives, they can improve the weather resistance and chemical stability of coatings and are used in the formulation of high-end coatings and inks.

Environmental and health impacts

Although dibutyltinoctyl esters are widely used in industry, their potential effects on the environment and human health have also raised concerns. Organotin compounds, including dibutyltin, have been shown to be toxic to aquatic life and may pose risks to human health, particularly with long-term exposure. Therefore, many countries and regions have implemented regulations that limit or prohibit the use of certain organotin compounds, promoting the development of safer alternatives.

Market trends and future prospects

With the increasing global awareness of environmental protection and health and safety, the use of dibutyltinoctyl ester compounds is facing more and more restrictions . Market trends show that the industry is actively looking for equivalent but more environmentally friendly alternatives. R&D efforts are focused on developing new heat stabilizers with low toxicity and high stability to meet future industry needs and regulatory requirements.

Conclusion

Dibutyltinoctyl ester compounds occupy an important position in plastic processing and other industrial fields due to their unique chemical properties and application properties. However, their potential impact on the environment and health has prompted the industry to seek more sustainable solutions. Future research and development will be dedicated to balancing performance needs with environmental responsibility and pushing the industry in a greener direction.

The above content is based on existing knowledge and public information. Taking into account the continuous progress of science and technology, new research and applications on dibutyltinoctyl ester compounds may need to refer to new scientific literature and industry reports.

Extended reading:

CAS:2212-32-0 – Manufacturer of N,N-Dicyclohexylmethylamine and N,N-Dimethylcyclohexylamine – Shanghai Ohans Co., LTD

N,N-Dicyclohexylmethylamine – Manufacturer of N,N-Dicyclohexylmethylamine and N,N-Dimethylcyclohexylamine – Shanghai Ohans Co ., LTD

bismuth neodecanoate/CAS 251-964-6 – Amine Catalysts (newtopchem.com)

stannous neodecanoate catalysts – Amine Catalysts (newtopchem.com)

polyurethane tertiary amine catalyst/Dabco 2039 catalyst – Amine Catalysts (newtopchem.com)

Polycat 41 catalyst CAS10294-43-5 Evonik Germany – BDMAEE

Polycat DBU catalyst CAS6674-22-2 Evonik Germany – BDMAEE

Application of tetramethylguanidine in polyurethane catalysis

Tetramethylguanidine (TMG for short), CAS number 80-70-6, is an important organic compound. Known for its strong alkalinity. It plays a versatile role in the chemical industry, especially in the production process of polyurethane (PU) foam, showing excellent performance as an efficient catalyst. This article will discuss in detail the mechanism, advantages and applications of tetramethylguanidine as a polyurethane catalyst in modern industry.

Introduction to polyurethane foam

Polyurethane is a type of polymer material widely used in the automotive, furniture, construction and packaging industries. PU foam is popular for its excellent thermal insulation, sound insulation and cushioning properties. Its production involves the reaction of isocyanate and polyol to form a urethane chain. This process usually requires a catalyst to accelerate the reaction rate and improve production efficiency and product quality.

The catalytic effect of tetramethylguanidine

Mechanism of action

Tetramethylguanidine is used as a catalyst in the production of polyurethane foam. Its main function is to promote the reaction between isocyanate and polyol. Specifically, TMG enhances the nucleophilicity of the isocyanate group by providing additional proton-accepting sites, thereby accelerating the addition reaction between isocyanate and hydroxyl groups to form urethane chains. In addition, TMG can also promote the self-polymerization reaction of NCO groups to generate urea groups and urethane groups, further enriching the polymer network structure.

Catalytic Advantages

High efficiency: Tetramethylguanidine has extremely high catalytic activity. Adding a small amount can significantly speed up the reaction rate, reduce reaction time, and improve production efficiency.
Selectivity: TMG shows good selectivity during the catalytic process, helping to control the molecular structure of the product and ensuring the uniformity and stability of PU foam.
Environmentally friendly: Compared with traditional metal catalysts, tetramethylguanidine produces fewer by-products during the catalytic process, is easy to handle, and has less impact on the environment.
Cost-Effectiveness: Although tetramethylguanidine itself is more expensive, due to its high efficiency, only a small amount is required for actual use, which can reduce production costs overall.

Application cases and prospects

In the production of polyurethane foam, the introduction of tetramethylguanidine greatly improves the flexibility of the process and the quality of the product. For example, products such as car seats, mattresses, and sound insulation materials use TMG-catalyzed PU foam to not only enhance comfort and durability, but also improve overall environmental performance.

With the growing demand for environmentally friendly and high-performance materials, tetramethylguanidine has broad application prospects as a catalyst in the production of polyurethane foam. R&D personnel are working to develop more efficient and environmentally friendly catalyst systems to meet future market needs. At the same time, by finely regulating the use of catalysts, the physical properties of the foam, such as hardness, elasticity, density, etc., can be further optimized to adapt to more diverse product design requirements.

Conclusion

Tetramethylguanidine, as a catalyst in the production of polyurethane foam, has become an important force in promoting the development of the polyurethane industry due to its high efficiency, selectivity and environmentally friendly characteristics. With the advancement of technology and changes in market demand, the application of tetramethylguanidine in PU foam and other related fields will continue to expand, making greater contributions to industrial production and environmental protection.

In short, tetramethylguanidine is not only a simple chemical, but also a bridge connecting chemical theory and industrial practice. Its existence promotes Technical innovation and sustainable development of the polyurethane industry. In the future, with the continuous advancement of new material science, tetramethylguanidine and its similar catalysts will play an important role in a wider range of fields.

Extended reading:

N-Ethylcyclohexylamine – Manufacturer of N,N-Dicyclohexylmethylamine and N,N-Dimethylcyclohexylamine – Shanghai Ohans Co., LTD

CAS 2273-43-0/monobutyltin oxide/Butyltin oxide – Manufacturer of N,N-Dicyclohexylmethylamine and N,N-Dimethylcyclohexylamine – Shanghai Ohans Co., LTD

T120 1185-81-5 di(dodecylthio) dibutyltin – Amine Catalysts (newtopchem.com)

DABCO 1027/foaming retarder – Amine Catalysts (newtopchem.com)

2-ethylhexanoic-acid-potassium-CAS-3164-85- 0-Dabco-K-15.pdf (bdmaee.net)

Dabco BL-11 catalyst CAS3033-62- 3 Evonik Germany – BDMAEE

Application of tetramethylguanidine as wool dyeing auxiliary

Wool, as a natural fiber, has been loved by people since ancient times for its unique warmth retention, hygroscopicity and aesthetics. However, the dyeing process of wool is full of challenges because the wool fiber has a complex structure and is easily damaged by heat and chemicals. In order to improve the dyeing effect, ensure the brightness and durability of the color, and protect the fiber from damage, various dyeing auxiliaries are widely used. Among them, Tetramethylguanidine (TMG), as a new wool dyeing auxiliary, has shown its unique advantages.

Challenges of wool dyeing

The main component of wool is keratin, a protein fiber that is highly hydrophilic and has an affinity for certain dyes. However, problems in the dyeing process include uneven distribution of dye, insufficient dyeing depth, and the complexity of post-dyeing treatments. The microporous structure and surface characteristics of wool fibers determine that it is difficult for dye molecules to penetrate and fix evenly. Especially under high temperature conditions, wool may shrink and be damaged, leading to dyeing failure.

Mechanism of action of tetramethylguanidine

Tetramethylguanidine, as a strongly alkaline organic compound, plays the following key roles in the wool dyeing process:

Improve dye solubility: TMG can increase the pH value of the dye solution and improve the solubility of the dye, making it easier for the dye molecules to disperse in the water and contact the wool fiber more effectively.
Promote dye penetration: Due to its alkaline nature, tetramethylguanidine can open the scale layer of wool fiber, making it easier for dye molecules to penetrate into the fiber to achieve uniform dyeing.
Prevent fiber damage: During the high-temperature dyeing process, TMG can stabilize the structure of wool fibers, reduce fiber damage caused by thermal expansion and contraction, and maintain the original elasticity and strength of the fibers.
Improve dye fastness: Through the special interaction between dyes and fibers, tetramethylguanidine can enhance the binding force between dyes and wool fibers, improving the wash fastness and light fastness of dyeing. .

Application examples and advantages

In the actual wool dyeing process, the application of tetramethylguanidine has proven its significant advantages:

Improve dyeing efficiency: Using tetramethylguanidine as a dyeing auxiliary can significantly shorten the dyeing time, improve production efficiency, and also reduce energy consumption.
Improve dyeing uniformity: The addition of TMG makes the dye more evenly distributed on the fiber, avoiding the problems of dyeing spots and color difference, and improving the appearance quality of the product.
Enhance color stability: By strengthening the binding of dyes to wool fibers, tetramethylguanidine can effectively improve the durability of dyeing. Even after multiple washings, the color remains as bright as ever.
Environmentally friendly: Compared with traditional dyeing auxiliaries, tetramethylguanidine is used less and produces relatively low wastewater pollution, which is in line with the development trend of green dyeing and finishing.

Conclusion

Tetramethylguanidine, as an efficient wool dyeing auxiliary, its application in the dyeing process not only solves the problems in traditional dyeing processes solve many problems and bring higher quality and economic benefits to the production of wool products. As the textile industry attaches increasing importance to environmental protection and sustainable development, the development and application of tetramethylguanidine and its similar compounds will become one of the key factors in promoting the advancement of textile dyeing technology.

In the field of textile dyeing and finishing in the future, tetramethylguanidine is expected to become a mainstream dyeing auxiliary, bringing revolutionary changes to the dyeing process of wool and other protein fibers, and helping the textile industry become more environmentally friendly, efficient and High-quality development.

Tetramethylguanidine (CAS No. 80-70-6) manufacturer

Tetramethylguanidine (CAS No. 80-70-6) manufacturer overview

Tetramethylguanidine (TMG), with the chemical formula C5H13N3, is an important organic base with strong alkalinity and catalytic activity. It has a wide range of applications in the chemical industry, pharmaceutical industry, materials science and other fields. As a professional tetramethylguanidine manufacturer, it not only needs to master advanced synthesis technology and strict quality control system, but also has a keen insight into market demand and the ability to continuously innovate.

Production technology of tetramethylguanidine

The production of tetramethylguanidine usually involves a multi-step chemical synthesis process. One of the common methods is to start from dimethylamine and undergo a series of reactions, including acylation, cyclization, reduction and dehydration, to obtain high-purity tetramethylguanidine. In this process, the control of reaction conditions is crucial, including temperature, pressure, catalyst selection, reaction time, etc., which will directly affect the purity and yield of the product.

Manufacturer’s roles and responsibilities

Role

Technological Innovators: Tetramethylguanidine manufacturers need to continue to develop more efficient and environmentally friendly production processes to improve production efficiency and reduce environmental impact.
Quality Assurer: A complete quality management system must be established to ensure that each batch of products meets or exceeds industry standards.
Market Supplier: As an important link in the supply chain, manufacturers must ensure stable supply capabilities to meet the needs of domestic and foreign markets.
Guardian of safety and environmental protection: Strictly implement safety regulations and environmental policies during the production process to ensure the safety and sustainability of production activities.

Responsibility

Comply with regulations: Comply with all relevant laws and regulations, including production safety, environmental protection, product quality standards, etc.
Social Responsibility: Actively fulfill corporate social responsibilities, including employee welfare, community support and environmental protection.
Customer Service: Provide high-quality customer service, including technical support, after-sales service and customer training, to meet the specific needs of customers.

Major domestic and foreign manufacturers

Domestic manufacturers

As one of the major production bases of global chemical products, China has many tetramethylguanidine manufacturers, including but not limited to:

Jianglai (Shanghai) Co., Ltd.: Provides quotations, specifications, models and other information of tetramethylguanidine, and provides professional pre-sales and after-sales services.
Wuhan Xinyang Ruihe Chemical Technology Co., Ltd.: Focus on the production and sales of tetramethylguanidine, providing products with different purity specifications.
Xindian Chemical Materials (Shanghai) Co., Ltd.: Taking tetramethylguanidine as one of its main products, it is used in fields such as cosolvents for the synthesis of new antibiotics and cephalosporins.
Jingcheng: Specializes in the production of tetramethylguanidine and provides products in a variety of packaging specifications.

International manufacturers

In the international market, there are also many well-known chemical companies producing tetramethylguanidine to serve customers around the world. These companies typically have broader market coverage capabilities and higher product quality standards.

Market Trends and Outlook

With global economic integration and continuous technological advancement, tetramethylguanidine manufacturers are facing new opportunities and challenges. On the one hand, the market demand for high-quality, high-purity tetramethylguanidine continues to grow, especially in the fine chemical and pharmaceutical industries. On the other hand, increasingly stringent environmental and safety regulations force manufacturers to adopt cleaner and energy-saving production methods.

In the future, tetramethylguanidine manufacturers should continue to increase investment in research and development, optimize production processes, increase product added value, and focus on environmental protection and social responsibility to achieve sustainable development and provide customers with better products and services. , to meet the changing needs of the market.

In short, as a manufacturer of tetramethylguanidine, we must not only pay attention to the quality and performance of the product itself, but also focus on long-term market strategy and corporate social responsibility, so that we can remain invincible in global competition.

Extended reading:

N-Ethylcyclohexylamine – Manufacturer of N,N-Dicyclohexylmethylamine and N,N-Dimethylcyclohexylamine – Shanghai Ohans Co., LTD

CAS 2273-43-0/monobutyltin oxide/Butyltin oxide – Manufacturer of N,N-Dicyclohexylmethylamine and N,N-Dimethylcyclohexylamine – Shanghai Ohans Co., LTD

T120 1185-81-5 di(dodecylthio) dibutyltin – Amine Catalysts (newtopchem.com)

DABCO 1027/foaming retarder – Amine Catalysts (newtopchem.com)

2-ethylhexanoic-acid-potassium-CAS-3164-85-0-Dabco-K-15.pdf (bdmaee.net)

Dabco BL-11 catalyst CAS3033-62- 3 Evonik Germany – BDMAEE

Application of tetramethylguanidine as additive for high temperature resistant and anti-corrosion coatings

In the chemical, electric power, petroleum, steel and other industries, equipment and structures are often exposed to extreme environmental conditions, including high temperatures and corrosive media and mechanical wear. In order to protect these facilities and extend their service life, high temperature resistant anti-corrosion coatings have become an indispensable means of protection. Tetramethylguanidine (TMG), as a multifunctional organic compound, has received widespread attention in recent years for its unique role in improving coating performance.

Basic properties of tetramethylguanidine

Tetramethylguanidine, chemical formula C5H13N3, CAS number 80-70-6, is a strongly alkaline organic compound. It has good thermal stability, can maintain its chemical properties in high temperature environments, and is not easy to decompose. In addition, tetramethylguanidine also has excellent anti-corrosion properties, which makes it show great potential in the field of coating additives.

The mechanism of action as a coating additive

When tetramethylguanidine is added to high temperature resistant anti-corrosion coatings, it mainly works in the following ways:

Enhance the thermal stability of the coating: The high thermal stability of tetramethylguanidine enables it to maintain the integrity of the molecular structure in high temperature environments and prevent the coating from decomposing at high temperatures, thus Maintain coating integrity and protective function.
Improve the corrosion resistance of the coating: The strong alkalinity of tetramethylguanidine can neutralize the acidic corrosive medium, form a protective film, prevent the corrosive medium from direct contact with the substrate, and greatly reduce corrosion. rate.
Promote coating curing: Tetramethylguanidine, as a catalyst, can accelerate the cross-linking reaction of the resin in the coating, allowing the coating to solidify quickly at a lower temperature and shortening the construction cycle.
Improve coating adhesion: Through chemical interaction with the substrate surface, tetramethylguanidine can enhance the adhesion between the coating and the substrate and improve the overall protective performance of the coating. .

Application cases and advantages

In practical applications, tetramethylguanidine is widely used as an additive in various high-temperature-resistant anti-corrosion coating formulations, especially in the protection of high-temperature equipment in petrochemical industry, thermal power stations, aerospace and other fields. For example, for high-temperature chimneys, heat exchangers, combustion chambers and other facilities, the addition of tetramethylguanidine can significantly improve the protective effect of coatings, extend the maintenance cycle of equipment, and reduce operating costs.

Research and development direction

Currently, research on the application of tetramethylguanidine in coating additives is still in depth. Researchers are working on developing new coating formulations containing tetramethylguanidine, aiming to further improve the comprehensive performance of coatings, including increasing the temperature range, enhancing UV aging resistance, and improving the flexibility and wear resistance of the coating.

Conclusion

Tetramethylguanidine, as an efficient high-temperature resistant and anti-corrosion coating additive, plays an irreplaceable role in improving coating performance. By enhancing the thermal stability, corrosion resistance and curing of coatings, tetramethylguanidine provides a comprehensive protection solution for industrial equipment, especially in high temperatures and corrosive environments. With the continuous deepening of research on tetramethylguanidine, we have reason to believe that it will become a bright star in the field of high temperature resistant anti-corrosion coatings in the future, bringing revolutionary breakthroughs to industrial protection.

Future Outlook

In the future, the application of tetramethylguanidine in the field of coating additives will develop in a more efficient and environmentally friendly direction. Researchers will work to develop more advanced synthesis processes to reduce production costs while reducing environmental impact. In addition, through combined use with other functional additives, tetramethylguanidine is expected to improve the overall performance of coatings while meeting more diversified and specialized market demands. With the advancement of science and technology and the evolution of market demand, the application prospects of tetramethylguanidine in the field of coating additives will be broader.

Extended reading:

N-Ethylcyclohexylamine – Manufacturer of N,N-Dicyclohexylmethylamine and N,N-Dimethylcyclohexylamine – Shanghai Ohans Co., LTD

CAS 2273-43-0/monobutyltin oxide/Butyltin oxide – Manufacturer of N,N-Dicyclohexylmethylamine and N,N-Dimethylcyclohexylamine – Shanghai Ohans Co., LTD

T120 1185-81-5 di(dodecylthio) dibutyltin – Amine Catalysts (newtopchem.com)

DABCO 1027/foaming retarder – Amine Catalysts (newtopchem.com)

2-ethylhexanoic-acid-potassium-CAS-3164-85-0-Dabco-K-15.pdf (bdmaee.net)

Dabco BL-11 catalyst CAS3033-62- 3 Evonik Germany – BDMAEE

Environmentally friendly production process of tetramethylguanidine

Environmentally friendly production process of tetramethylguanidine

Tetramethylguanidine (TMG for short) is an important organic compound that has attracted much attention due to its wide range of applications in chemical industry, pharmaceutical manufacturing, materials science and other fields. However, traditional tetramethylguanidine production methods are often accompanied by problems of environmental pollution and resource waste. In response to the global call for sustainable development and green chemistry, it is particularly important to develop an environmentally friendly tetramethylguanidine production process.

Key elements of environmentally friendly production processes

The environmentally friendly tetramethylguanidine production process should include the following key elements:

Raw material selection: Prioritize the use of renewable or environmentally friendly raw materials to reduce dependence on fossil fuels.
Optimization of reaction conditions: By precisely controlling reaction temperature, pressure and catalyst selection, the reaction efficiency is improved and the production of by-products and wastes is reduced.
Solvent recycling: Use low-toxic, easily recyclable solvents and establish a solvent circulation system to reduce solvent consumption and environmental pollution.
Waste treatment: Effectively treat waste water, waste gas and solid waste generated during the production process to ensure that emission standards are met.
Energy Saving: Optimize the production process, reduce unnecessary energy consumption, and improve energy utilization efficiency.

Implementation of environmentally friendly production processes

Selection of raw materials and reaction paths

In terms of raw material selection, environmentally friendly production processes tend to use dimethylamine and sodium cyanide as starting materials instead of traditional cyanogen chloride, because the latter may produce toxic by-products during the preparation process. Dimethylamine and sodium cyanide react under mild conditions, which can effectively reduce the emission of harmful gases.

Catalyst and reaction conditions

The use of efficient catalysts, such as metal complexes or biological enzymes, can promote reactions at lower temperatures and pressures, reduce energy consumption and increase yields. In addition, precise control of reaction conditions, such as pH value and reaction time, is also key to reducing by-products.

Solvent and separation technology

Choose green solvents, such as water or supercritical carbon dioxide, to significantly reduce your environmental impact. At the same time, the use of advanced separation technologies, such as membrane separation, supercritical fluid extraction or continuous distillation, can effectively recover solvents and reduce waste generation.

Waste Management

For unavoidable waste, advanced treatment technologies such as biodegradation, catalytic oxidation or electrochemical treatment are used to convert them into harmless substances or valuable by-products.

Case analysis: improved production process

Based on the above principles, a typical environmentally friendly tetramethylguanidine production process may include:

Raw material pretreatment: Dimethylamine and sodium cyanide are premixed and evenly dispersed to reduce unevenness in subsequent reactions.
Catalytic reaction under mild conditions: Under controlled pH and temperature conditions, use an efficient catalyst to promote the reaction of dimethylamine and sodium cyanide to generate the target product tetramethylguanidine hydrochloride .
Solvent recovery and product extraction: Using supercritical fluid extraction technology, tetramethylguanidine is extracted from the reaction mixture and the solvent is recovered for recycling.
By-product treatment: Use biodegradation or catalytic oxidation technology to treat by-products generated during the reaction to reduce environmental pollution.
Final product purification: Obtain high-purity tetramethylguanidine products through continuous distillation or other advanced separation techniques.

Conclusion

The environmentally friendly tetramethylguanidine production process can not only significantly reduce the negative impact on the environment, but also improve production efficiency and economic benefits. With the popularization of the concept of green chemistry and the continuous advancement of technology, future tetramethylguanidine production will pay more attention to the rational utilization of resources and environmental sustainability, and contribute to the construction of a green chemical industry.

Future Outlook

Future research directions will focus on developing more efficient and safer catalysts, exploring the utilization of renewable raw materials, and optimizing the energy efficiency of the entire production process. Through interdisciplinary cooperation and technological innovation, the production of tetramethylguanidine will gradually move towards a more environmentally friendly and sustainable path.
Further reading:

N-Ethylcyclohexylamine – Manufacturer of N,N-Dicyclohexylmethylamine and N,N-Dimethylcyclohexylamine – Shanghai Ohans Co., LTD

CAS 2273-43-0/monobutyltin oxide/Butyltin oxide – Manufacturer of N,N-Dicyclohexylmethylamine and N,N-Dimethylcyclohexylamine – Shanghai Ohans Co., LTD

T120 1185-81-5 di(dodecylthio) dibutyltin – Amine Catalysts (newtopchem.com)

DABCO 1027/foaming retarder – Amine Catalysts (newtopchem.com)

2-ethylhexanoic-acid-potassium-CAS-3164-85-0-Dabco-K-15.pdf (bdmaee.net)

Dabco BL-11 catalyst CAS3033-62- 3 Evonik Germany – BDMAEE

Application of dibutyltin dilaurate in polyvinyl chloride

Dibutyltin Dilaurate (DBTDL), as an important organotin compound, is used in many fields due to its excellent properties It has found applications in the polyvinyl chloride (Polyvinyl Chloride, PVC) industry, where it plays a key role. PVC is a widely used thermoplastic favored for its cost-effectiveness, durability and versatility. However, PVC is prone to degradation during processing and use, especially thermal degradation, which limits its application scope. In order to overcome this problem, the addition of stabilizers becomes crucial, and dibutyltin dilaurate is one of the most efficient PVC heat stabilizers.

Application in polyvinyl chloride

Thermal Stabilization

PVC easily decomposes at high temperatures to produce HCl, which not only reduces the physical properties of the product, but also accelerates further degradation processes. Dibutyltin dilaurate can effectively capture and neutralize the generated HCl, preventing it from further attacking the PVC chain, thereby inhibiting the thermal degradation process and improving the thermal stability of PVC. This stabilizing effect enables PVC products to maintain their original properties and extend their service life during processing and use.

Increase transparency

In soft and semi-soft PVC products, such as transparent films, pipes, artificial leather, etc., dibutyltin dilaurate can not only provide thermal stability, but also maintain or improve the transparency of the product. This is important for applications that require good visual effects, such as packaging and decorative materials.

Lubricity and processability

In addition to being a stabilizer, dibutyltin dilaurate also has good lubricity, which can improve the fluidity of PVC during extrusion, injection molding and other processing processes, reduce friction, make processing smoother, reduce energy consumption, and improve Productivity.

Weather resistance

PVC products used outdoors, such as window frames, fences, etc., need to withstand the effects of environmental factors such as ultraviolet rays and temperature changes. Dibutyltin dilaurate can enhance the weather resistance of PVC, allowing it to maintain good appearance and mechanical properties under harsh conditions.

Catalysis

In addition to its application in PVC, dibutyltin dilaurate is also an effective catalyst and can be used in the vulcanization process of polyurethane foam synthesis, polyester synthesis and room temperature vulcanization silicone rubber. In these polymerization reactions, it can promote the reaction rate and control the reaction process to obtain high-quality products.

Conclusion

In summary, the application of dibutyltin dilaurate in the polyvinyl chloride industry is very extensive and important. Whether it is improving thermal stability, enhancing transparency, improving processability, or improving weather resistance, it plays an indispensable role. However, it is worth noting that despite the many advantages of dibutyltin dilaurate, its potential impact on human health and the environment cannot be ignored. Therefore, when using this compound, it is necessary to strictly abide by relevant safety regulations, take appropriate protective measures, and explore and develop more environmentally friendly alternatives to achieve sustainable development.

Extended reading:

CAS:2212-32-0 – Manufacturer of N,N-Dicyclohexylmethylamine and N,N-Dimethylcyclohexylamine – Shanghai Ohans Co., LTD

N,N-Dicyclohexylmethylamine – Manufacturer of N,N-Dicyclohexylmethylamine and N,N-Dimethylcyclohexylamine – Shanghai Ohans Co ., LTD

bismuth neodecanoate/CAS 251-964-6 – Amine Catalysts (newtopchem.com)

stannous neodecanoate catalysts – Amine Catalysts (newtopchem.com)

polyurethane tertiary amine catalyst/Dabco 2039 catalyst – Amine Catalysts (newtopchem.com)

Polycat 41 catalyst CAS10294-43-5 Evonik Germany – BDMAEE

Polycat DBU catalyst CAS6674-22-2 Evonik Germany – BDMAEE

Dibutyltin dilaurate substitute

Dibutyltin dilaurate (DBTDL) is a widely used polyvinyl chloride (PVC) stabilizer, polyurethane (PU) catalyst, and Highly efficient organotin compounds in organic synthesis. However, due to its possible negative effects on human health and the environment, including reproductive toxicity, bioaccumulation, and potential harm to ecosystems, the search for safer and more environmentally friendly alternatives has become an important topic in the fields of chemistry and materials science. Below are several dibutyltin dilaurate alternatives and their characteristics.

1. Organobismuth catalyst

Organobismtium catalysts are a type of non-toxic and environmentally friendly catalysts that have been much studied in recent years. Their application in polyurethane synthesis shows similar or even better catalytic activity than dibutyltin dilaurate. Organobismtium catalysts are usually based on bismuth acetate, bismuth acetylacetonate, etc. Through appropriate ligand modification, their catalytic activity and selectivity can be adjusted, while avoiding the environmental and health problems caused by organotin catalysts.

2. Zinc salts and zinc complexes

Zinc salts, such as zinc acetate, zinc stearate, etc., have also been developed as alternatives to dibutyltin dilaurate. Zinc salts have shown good performance in PVC stabilizers and PU catalysts. They can effectively inhibit the generation of HCl, prevent thermal degradation of PVC, and have low toxicity. In addition, zinc complexes, such as zinc soaps, also show good thermal stability and UV resistance.

3. Organic amine catalyst

Organic amine compounds, such as dimethylcyclohexylamine (DMCHA), N,N-dimethylbenzylamine (DMBA), etc., as catalysts for polyurethane synthesis, have fast reaction rates and high selectivity. . Although their catalytic efficiency may be slightly lower than organotin catalysts, in some applications comparable results can be achieved by adjusting the formulation.

4. Titanate catalyst

Titanate catalysts, such as titanium tetrabutoxide, can be used as catalysts in polyurethane synthesis. They have high catalytic activity at high temperatures and have certain thermal stability. One advantage of titanate catalysts is that they can provide longer open times in some cases, which facilitates mixing and processing of multi-component polyurethane systems.

5. Environmentally friendly PVC heat stabilizer

In addition to the substitution of the above catalysts, environmentally friendly stabilizers for PVC thermal stability are also constantly developing, such as calcium-zinc composite stabilizers, organotin alternative stabilizers (such as SICAT-03), etc., which are designed to reduce or Eliminate the use of traditional organotin stabilizers while maintaining or improving the performance of PVC products.

Conclusion

Looking for alternatives to dibutyltin dilaurate is a multidisciplinary research field involving chemistry, materials science, environmental science, etc. aspect. As the global awareness of environmental protection increases and various countries’ regulations on the use of hazardous substances become increasingly strict, the development of new, low-toxic, and environmentally friendly catalysts and stabilizers will become a future development trend. Enterprises, scientific research institutions and governments should work together to promote the development of green chemical technologies to achieve the goals of sustainable production and consumption.

Extended reading:

CAS:2212-32-0 – Manufacturer of N,N-Dicyclohexylmethylamine and N,N-Dimethylcyclohexylamine – Shanghai Ohans Co., LTD

N,N-Dicyclohexylmethylamine – Manufacturer of N,N-Dicyclohexylmethylamine and N,N-Dimethylcyclohexylamine – Shanghai Ohans Co ., LTD

bismuth neodecanoate/CAS 251-964-6 – Amine Catalysts (newtopchem.com)

stannous neodecanoate catalysts – Amine Catalysts (newtopchem.com)

polyurethane tertiary amine catalyst/Dabco 2039 catalyst – Amine Catalysts (newtopchem.com)

Polycat 41 catalyst CAS10294-43-5 Evonik Germany – BDMAEE

Polycat DBU catalyst CAS6674-22-2 Evonik Germany – BDMAEE

Dibutyltin dilaurate environmental regulations

Dibutyltin dilaurate (DBTDL), as an organotin compound, is widely used in many industrial fields due to its efficient catalytic properties, especially in polyurethane (PU) foam manufacturing, polyvinyl chloride (PVC) ) heat stabilizer and in organic synthesis. However, the use of dibutyltin dilaurate is not without controversy, and its potential effects on the environment and human health have raised global concerns. Therefore, many countries and regions have enacted a series of environmental regulations aimed at limiting or prohibiting the use of this compound to protect the ecological environment and public health.

EU REACH Regulation
The EU’s Registration, Evaluation, Authorization and Restriction of Chemicals (REACH) regulations are one of the world’s comprehensive chemicals management frameworks. REACH requires manufacturers and importers to register the chemicals they produce and provide detailed chemical safety assessments. For dibutyltin dilaurate, REACH classifies it as a substance of very high concern (SVHC) and imposes strict restrictions on its use. In some applications, such as direct food contact items or children’s toys, the use of dibutyltin dilaurate has been completely banned. In addition, the EU also requires products containing dibutyltin dilaurate to be authorized and only allowed to be used when there are no viable alternatives.

U.S. Environmental Protection Agency (EPA) Regulations
The U.S. Environmental Protection Agency (EPA) also regulates the use of dibutyltin dilaurate. Under the Toxic Substances Control Act (TSCA), the EPA has the authority to evaluate and restrict the use of chemicals to protect the public from potential health risks. The EPA has conducted risk assessments of organotin compounds, including dibutyltin dilaurate, and has taken steps to limit their use in certain products, particularly those that may pose a risk of exposure to children and sensitive populations.

Other country regulations
In addition to the European Union and the United States, other countries and regions have also introduced their own regulations to control the use of dibutyltin dilaurate. For example, Canada includes it in the list of hazardous substances under the Canadian Environmental Protection Act (CEPA); Japan regulates it through the Chemical Substances Evaluation and Manufacturing Restriction Act (CMR); Australia passes the Industrial Chemicals Act ( IC Act) restricts its use.

International Convention
At the international level, the Stockholm Convention is concerned about persistent organic pollutants (POPs). Although dibutyltin dilaurate is not currently included in the POPs list, its similar organotin compounds, such as tributyltin, have been restricted by the convention. This shows that the international community is gradually recognizing the long-term impact of organotin compounds on the environment, and may adopt stricter control measures on the use of dibutyltin dilaurate in the future.

Industry self-regulation
In addition to government-level regulations, many industry organizations and companies have also begun to proactively reduce or eliminate the use of dibutyltin dilaurate and instead look for more environmentally friendly and safer alternatives. This trend of self-regulation not only responds to regulatory requirements, but also reflects corporate social responsibility, helping to enhance brand image and market competitiveness.

Conclusion
Regulations around the world are increasingly restricting the use of dibutyltin dilaurate due to the risks it poses to the environment and human health. These regulations not only reflect the importance of public health and environmental protection, but also promote the development of the chemical industry in a greener and more sustainable direction. Enterprises should pay close attention to changes in relevant regulations, adjust production strategies in a timely manner to ensure compliance with new environmental standards, and at the same time actively develop and adopt more environmentally friendly chemicals to meet future challenges.
Further reading:

CAS:2212-32-0 – Manufacturer of N,N-Dicyclohexylmethylamine and N,N-Dimethylcyclohexylamine – Shanghai Ohans Co., LTD

N,N-Dicyclohexylmethylamine – Manufacturer of N,N-Dicyclohexylmethylamine and N,N-Dimethylcyclohexylamine – Shanghai Ohans Co ., LTD

bismuth neodecanoate/CAS 251-964-6 – Amine Catalysts (newtopchem.com)

stannous neodecanoate catalysts – Amine Catalysts (newtopchem.com)

polyurethane tertiary amine catalyst/Dabco 2039 catalyst – Amine Catalysts (newtopchem.com)