The leader of China special amines-

Archive for the category: News

Performance analysis of butylstannic acid as plastic stabilizer

admin 7月 11th, 2024 News

Butylstannic acid, with the chemical formula C4H10O2Sn, is a multifunctional organotin compound that has found widespread use in the plastics industry due to its unique chemical properties. Uses, especially in the field of plastic stabilizers. Plastics, especially thermoplastics such as polyvinyl chloride (PVC), are susceptible to degradation due to external factors such as heat, light, and oxygen during processing and use, resulting in reduced performance. Therefore, the use of plastic stabilizers becomes crucial. Butylstannic acid, as a highly efficient stabilizer, exhibits excellent performance characteristics.

Enhanced thermal stability

Butylstannic acid mainly functions as a heat stabilizer in plastics. When plastics are processed at high temperatures, butylstannic acid can inhibit or delay the free radical reaction caused by thermal decomposition and prevent hydrogen chloride (HCl) from escaping from the polymer chain, thus avoiding further chain breaks and structural damage. This mechanism helps maintain the plastic’s mechanical strength and extend its service life.

Antioxidant properties

In addition to thermal stabilization, butylstannic acid also has certain antioxidant capabilities. It protects plastics from oxidative degradation by capturing peroxides produced during the aging process of plastics and preventing them from further decomposing into harmful free radicals.

Photostability

In some cases, butylstannic acid can also provide a degree of photostability, helping plastics resist UV damage. While its photostabilizing effect may not be as significant as that of specially designed light stabilizers, for some applications this additional protection may still be valuable.

Improve processing performance

The addition of butylstannic acid can also improve the processing performance of plastics. It can reduce the viscosity of plastic melt, making the plastic process smoother during extrusion, injection molding, etc., reducing equipment wear and improving production efficiency.

Environmental and health considerations

While butylstannic acid excels as a plastic stabilizer, its use comes with environmental and health considerations. Organotin compounds, including butylstannic acid, are considered to pose potential risks to the environment and human health, particularly if improperly handled and disposed of. Therefore, its application needs to comply with strict regulatory standards to ensure that it provides stabilization while minimizing negative impacts on the ecosystem.

Conclusion

Butylstannic acid, as a plastic stabilizer, provides comprehensive protection for plastics with its thermal stability, antioxidant and light stability properties, significantly improving the quality of plastics. Product durability and safety. However, its application requires caution to balance performance needs with environmental health risks. With the increasing emphasis on green chemistry and sustainable development, the development of new, more environmentally friendly plastic stabilizers will become an important direction for future research. In this context, the development and application of alternatives to butylstannic acid and other organotin stabilizers will receive more attention, aiming to reduce the potential burden on the environment while maintaining or improving the performance and quality of plastic products.

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)

DMCHA – morpholine

N-Methylmorpholine – morpholine

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

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

Application of Butylstannic Acid in Polyurethane Catalyst

admin 7月 11th, 2024 News

Polyurethane (PU) is a type of polymer material with a wide range of uses. Its applications cover soft foam, hard foam, elastomer, Coatings, adhesives, sealants and many other fields. The synthesis of polyurethane is mainly achieved through the reaction of isocyanate and polyol. This process usually requires a catalyst to accelerate the reaction rate and ensure the performance of the product. Butylstannic acid, as an efficient catalyst, plays a vital role in the polyurethane synthesis process.

Catalyst role in polyurethane synthesis

In the synthesis of polyurethane, the main task of the catalyst is to accelerate the reaction between the isocyanate group (NCO) and the hydroxyl group (OH). This reaction is called an addition reaction. Catalysts can significantly increase the reaction rate and shorten the production cycle. They also help control the selectivity of the reaction and the molecular structure of the product, thereby affecting the performance of polyurethane materials.

Catalytic mechanism of butylstannic acid

Butylstannic acid, chemical formula C4H10O2Sn, is an organotin compound with strong catalytic activity. In polyurethane synthesis, butylstannic acid works in the following ways:

Promote the reaction between NCO and OH: Butylstannic acid can accelerate the reaction between isocyanate and polyol and promote the formation of polyurethane network.
Controlling reaction kinetics: By adjusting the amount of catalyst, the reaction rate can be controlled and the molecular weight and molecular weight distribution of the product can be affected, which is crucial for adjusting the hardness, elasticity and durability of polyurethane materials.
Improve reaction selectivity: Butylstannic acid helps control different types of reaction pathways, such as preferentially promoting chain growth reactions rather than cross-linking reactions, which is very important for adjusting the structure and properties of materials.

Application cases

In the production of polyurethane foam, butylstannic acid as a catalyst can significantly increase the foaming speed and curing speed of the foam, while ensuring the uniformity and stability of the foam. In the preparation of polyurethane coatings and sealants, the use of butylstannic acid can accelerate the curing process and improve the adhesion and weather resistance of the coating.

Safety and environmental considerations

Although butylstannic acid shows excellent catalytic performance in polyurethane synthesis, as an organotin compound, it may have adverse effects on the environment and human health. Therefore, when using butylstannic acid, safe operating procedures must be strictly followed and appropriate safety measures must be taken to reduce environmental pollution and health risks to operators.

Substitutes and Development Trends

In view of environmental protection and health issues, in recent years, researchers have been committed to developing new and more environmentally friendly polyurethane catalysts to replace traditional organic Tin catalyst. These alternatives include but are not limited to amine catalysts, metal complex catalysts, etc. They are designed to maintain or improve catalytic efficiency while reducing potential harm to the environment.

Conclusion

Butylstannic acid, as a catalyst in polyurethane synthesis, plays an important role in improving production efficiency and regulating product performance. However, its application needs to take into account economic benefits and environmental health, especially in the context of the growing global demand for green chemistry and sustainable development. Future research will focus on developing efficient, low-toxic catalysts to promote the development of the polyurethane industry in a more environmentally friendly and sustainable direction.

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)

DMCHA – morpholine

N-Methylmorpholine – morpholine

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

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

Dibutyltin oxide organic synthesis catalyst

admin 7月 11th, 2024 News

Dibutyltin oxide (chemical formula: (C4H9)2SnO), commonly known as DBTO, is an important organotin compound in Plays the role of catalyst in organic synthesis. This compound has become an indispensable part of the fields of organic synthesis, polymer science, and materials science due to its unique catalytic activity and high efficiency in certain chemical reactions. The following is an in-depth look at dibutyltin oxide as a catalyst for organic synthesis.

Chemical structure and properties

Dibutyltin oxide is a white solid that is relatively stable at room temperature, but easily decomposes under heating conditions. It is soluble in many organic solvents, which makes it easy to operate and use in organic synthesis. Because it contains two butyl groups and a tin oxide center, DBTO can provide active tin atoms in the reaction, thereby promoting various organic chemical reactions.

Catalysis

The catalytic effect of dibutyltin oxide is mainly reflected in its activation of compounds containing oxygen and sulfur functional groups such as alcohols, phenols, and mercaptans. In organic synthesis, it is often used in the dehydration, esterification, etherification of alcohols, and the synthesis of halogenated hydrocarbons. Specifically, DBTO can promote the esterification reaction of alcohols and acids, accelerate the alkylation reaction of alcohols and halogenated hydrocarbons, and participate in certain addition and elimination reactions, such as Michael addition, Wittig reaction and Claisen rearrangement. wait.

Application examples

In the polyurethane industry, dibutyltin oxide is widely used as a catalyst, especially in the production process of polyurethane foam. It can effectively catalyze the reaction between isocyanate and polyol, accelerate the formation of polyurethane, while controlling the reaction rate to ensure foam uniformity and good physical properties.

DBTO also plays an important role in the synthesis of fine chemicals. For example, it can be used as a catalyst in the synthesis of fragrances, pharmaceutical intermediates, and pesticide active ingredients. By promoting specific chemical reactions, DBTO helps increase yields, reduce by-product formation, and reduce energy consumption and costs.

Safety and environmental considerations

Although dibutyltin oxide is widely used in industry, its potential impact on the environment and human health cannot be ignored. Organotin compounds may be toxic to aquatic life, and long-term exposure may have adverse effects on human health, including neurotoxicity. Therefore, strict safety operating procedures must be followed when using DBTO, appropriate personal protective measures must be taken, and its waste must be properly disposed of.

Conclusion

Dibutyltin oxide is a multifunctional organic synthesis catalyst. Its application in many fields highlights its role in the modern chemical industry. important position. From polymer science to fine chemical synthesis, DBTO promotes the efficient conduct of numerous chemical reactions with its unique catalytic activity. However, with the increasing awareness of sustainability and environmental protection, the development of alternative catalysts that are more environmentally friendly and friendly to human health has become one of the current research hotspots. Future research will focus on balancing the industrial practicality of dibutyltin oxide with its potential impact on the environment, with a view to achieving a greener and more sustainable chemical industry.

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)

DMCHA – morpholine

N-Methylmorpholine – morpholine

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

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

1•1432 143314341435 1436•1717

Page 1434 of 1717