The role of dioctyltin oxide in the plastics industry

Di-n-octyltin oxide (DOTO) plays a vital role in the plastics industry, especially in During the processing and stabilization of polyvinyl chloride (PVC). As a highly efficient organotin compound, it not only provides excellent thermal stability and processing performance, but also improves the physical and chemical properties of the product to a certain extent. The following are several key roles of dioctyltin oxide in the plastics industry, especially in the production of PVC products:

Heat stabilizer

PVC is prone to dehydrochlorination under heating conditions, leading to chain breakage and yellowing, seriously affecting its mechanical properties and appearance. As a thermal stabilizer, dioctyltin oxide can capture the released HCl and prevent it from further catalyzing the degradation reaction, thereby inhibiting the thermal degradation process of PVC. By providing a stable environment, it avoids further attack by HCl on the PVC molecular chain, extending the service life of the product and maintaining the transparency of the product.

Chain transfer agent

In addition to thermal stabilization, dioctyltin oxide also acts as a chain transfer agent. During the polymerization and processing of PVC, it can regulate the growth of the polymer chain, reduce the formation of unstable ends through chain transfer, thereby improving the fluidity of PVC, making the processing process smoother, and also helping to control the polymer properties. molecular weight distribution to optimize product performance.

Antioxidants

Dioctyltin oxide also shows certain antioxidant properties, which can resist the attack of hot oxygen and ultraviolet rays on PVC to a certain extent, improving the weather resistance and anti-aging capabilities of the product. This is particularly important for PVC products used outdoors, as they are often exposed to harsh environmental conditions.

steric hindrance effect

The long chain structure of dioctyltin oxide gives it good steric hindrance effect, which helps protect PVC molecules from damage by external factors. The steric hindrance effect can prevent harmful substances from directly contacting the PVC molecular chain, thereby acting as a physical barrier and further enhancing the stability of PVC.

Improve processing performance

In PVC processing, dioctyltin oxide can improve the plasticizing properties of the material, reduce the melting temperature, shorten the processing cycle, and improve production efficiency. This not only saves energy consumption, but also reduces production costs and improves economic benefits.

Structural Characteristics

The chemical formula of dioctyltin oxide is C16H34OSn. Its molecular structure contains two octyl chains and one tin oxide group. This special structure not only has good lipophilicity, but also can be evenly dispersed in the plastic matrix, ensuring the full play of its stabilizer function.

Application fields

Dioctyltin oxide is widely used in PVC soft products, hard products, and various PVC films, pipes, plates, wire and cable sheaths and other products. From PVC pipes used in construction to plastic packaging common in daily life, to automotive interior parts, dioctyltin oxide is one of the indispensable additives.

Safety and environmental protection

Although the application of dioctyltin oxide in the plastics industry has brought many benefits, its potential environmental and health risks also need to be taken into account. As an organotin compound, it may be harmful to aquatic life and is a potential threat to human health at high concentrations. As a result, the industry is constantly exploring safer and greener alternatives to reduce environmental impact while meeting increasingly stringent regulatory requirements.

In short, dioctyltin oxide is used in the plastics industry, especially in the production of PVC products, to ensure product quality, extend service life and improve processing Key ingredients for performance. However, its use also needs to be cautious to balance the relationship between economic benefits and environmental protection. With the development of green chemistry, finding more sustainable solutions will be an important trend in the plastics industry in the future.

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

Dimethyltin oxide purchasing channels

Dimethyltin Oxide, with the chemical formula C2H6OSn, is a compound widely used in the chemical industry, especially in polymers. Used as heat stabilizer in vinyl chloride (PVC) processing. Due to its special properties and application requirements, finding reliable purchase channels for dimethyltin oxide is crucial for many manufacturers and research institutions.

1. Direct manufacturer purchasing

One of the direct and cost-effective ways to purchase is from direct manufacturers. For example, Yunnan Lilian Biotechnology Co., Ltd. is one of the well-known dimethyltin oxide manufacturers, specializing in the manufacture of PVC heat stabilizers. By contacting manufacturers directly, you can get better prices, customized product specifications, and a stable supply chain. Manufacturers are often able to provide the production volumes required for large orders and can adjust product quality standards to your specific needs.

2. Chemical raw material suppliers

Chemical raw material suppliers are another important purchasing channel. These suppliers often have extensive inventories of chemicals, including dimethyltin oxide. They purchase from different manufacturers and then distribute to end users. Suppliers such as Nantong Adwang Chemical Co., Ltd., Suzhou Senfeida Chemical Co., Ltd., Shanghai Hanyu Chemical Co., Ltd., etc., provide products of different purity and packaging specifications, suitable for laboratory use to industrial production needs.

3. Online trading platform

With the development of e-commerce, online trading platforms have become an increasingly popular purchasing channel. Alibaba, Global Plastics Network, 007 Business Station and other platforms provide a large amount of dimethyltin oxide supplier information. These platforms not only facilitate comparison of prices and services from different suppliers, but also provide transaction protection measures to reduce transaction risks. Users can easily find domestic and foreign suppliers through these platforms, and make inquiries and purchases.

4. Professional chemical reagent company

Companies that focus on the sales of chemical reagents are also good choices for purchasing dimethyltin oxide. These companies, such as Xi’an Qiyue Biotechnology Co., Ltd., typically provide high-quality chemical reagents, including high-purity dimethyltin oxide, suitable for scientific research and analytical testing. This type of supplier has strict standards for product purity and quality control, making them ideal for scientific research institutions and laboratories.

5. Chemical exhibitions and industry conferences

Attending chemical industry shows and conferences is another way to find buying channels. These events bring together numerous chemical manufacturers and distributors, providing opportunities for face-to-face communication and helping to build long-term relationships. Through exhibitions, you can directly understand market dynamics, product information, and have in-depth communication with potential suppliers.

6. Agents and Distributors

In some areas, there may not be a direct manufacturer or supplier. At this time, purchasing dimethyltin oxide through a local agent or distributor is a feasible option. These middlemen can help you solve problems such as logistics and import duties and simplify the purchasing process.

7. Customized synthesis services

For customers with special needs, such as dimethyltin oxide with specific purity, packaging form or customized formula, you can consider using custom synthesis services. Some chemical companies offer this service, producing products according to customers’ specific requirements.

Conclusion

Selecting the correct purchasing channel depends on many factors, including the quantity of dimethyltin oxide required, quality requirements, budget and whether other Value-added services. It is recommended to conduct sufficient market research and supplier evaluation on different channels before making a decision to ensure that you obtain products that suit your needs and favorable trading conditions. At the same time, considering the potential toxicity of dimethyltin oxide, you should also ensure that you comply with all relevant safety and environmental regulations when purchasing.

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

Dimethyltin oxide supplier list

Dimethyltin Oxide, with the chemical formula C2H6OSn, is an important organotin compound used in the plastics industry, especially in polyethylene. Vinyl chloride (PVC) is widely used in the field of heat stabilizers. Due to its importance and specificity, there are several suppliers worldwide dedicated to the production and sale of this chemical. The following is a list of dimethyltin oxide suppliers based on public information, intended to provide reference for companies and individuals seeking this product.

1. Chinese suppliers

–Kunming dimethyltin oxide manufacturer

Yunnan Lilian Biotechnology Co., Ltd. is a company specializing in the production of dimethyltin oxide. Its products are mainly used as PVC heat stabilizers and are suitable for various plastic processing fields.

–Tianmen Hengchang Chemical Co., Ltd.

Provide spot supply of dimethyltin oxide, focus on the production and sales of chemical raw materials, and be able to meet the quality and quantity requirements of different customers.

–Shanghai Hanyu Chemical Co., Ltd.

Specializing in the sales of chemical reagents and fine chemicals, dimethyltin oxide is one of its products and is provided to scientific research and industrial users.

–Nantong Adwang Chemical Co., Ltd.

Mainly engaged in various types of chemical raw materials, including a variety of products including dimethyltin oxide, serving multiple industries.

–Suzhou Senfida Chemical Co., Ltd.

Supply dimethyltin oxide and other chemical products, focusing on product quality and customer service.

2. International Suppliers

–Bidepharm

An international chemical reagent supplier provides dimethyltin oxide and other chemicals with a standard purity of 98% and provides detailed quality inspection reports.

3. Through online platforms

–Alibaba

One of the world’s largest B2B e-commerce platforms brings together many domestic and foreign dimethyltin oxide suppliers. Users can compare prices, quality and delivery times on this platform.

–Global Plastics Network

A trading platform focusing on plastics and related chemicals, providing supplier information and price inquiries for dimethyltin oxide.

–Gade Chemical Network

A comprehensive chemical product trading platform where users can find detailed information and supplier lists of dimethyltin oxide.

–Yihubaiying.com

Gathers chemical product suppliers from all over China, including wholesale and retail information of dimethyltin oxide.

4. Chemical reagent company

–Xi’an Qiyue Biotechnology Co., Ltd.

Specialized in providing chemical reagents, including high-purity dimethyltin oxide, suitable for scientific research and analytical testing.

Factors to consider when selecting a supplier

When selecting a dimethyltin oxide supplier, the following factors should be taken into consideration:

  • Product Purity and Quality: Make sure your supplier can provide products that meet the purity and quality standards you require.
  • Price vs. Cost: Compare quotes from different suppliers, taking into account shipping costs and possible tariffs, and choose the most cost-effective option.
  • Delivery Time and Reliability: Understand your supplier’s delivery schedule and history to ensure supply chain stability.
  • After-sales service and technical support: Confirm whether the supplier provides after-sales support and technical consultation, which is especially important for complex applications.
  • Compliance and Safety: Ensure suppliers comply with all relevant safety, environmental and legal standards.

Through the above supplier list, combined with your own specific needs, you can comprehensively evaluate and select suitable dimethyltin oxide suppliers. Before actual transactions, it is recommended to conduct sample testing and small batch trial purchases to verify the supplier’s product quality and business reputation.

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

Dimethyltin Oxide Laboratory Instructions

Dimethyltin Oxide, chemical formula C2H6OSn, is an organotin compound commonly used in a variety of chemical reactions in the laboratory and analytical testing. In a laboratory environment, the correct and safe use of dimethyltin oxide is critical to the success of experiments and the safety of personnel. Below is a basic guide to laboratory use of dimethyltin oxide.

1. Physical and chemical properties

Dimethyltin oxide is a white powder with a melting point of about 395°C and a low boiling point, but it will not volatilize under standard conditions. It is stable in air, but contact with acids, alkalis, and strong oxidants should be avoided to prevent reactions.

2. Storage conditions

  • Temperature control: Should be stored in a cool, dry place, ideal storage temperature is 2-8°C.
  • Sealed storage: The container must be sealed to prevent moisture and air from entering and reduce the risk of oxidation and degradation.
  • Isolated storage: Keep away from incompatible substances such as strong acids, alkalis and oxidizing agents.

3. Security

  • Personal Protective Equipment (PPE): Appropriate PPE should be worn when operating, including but not limited to lab coats, protective glasses, gloves, and respirators.
  • Ventilation: Should be used in a well-ventilated environment, inside a fume hood, to reduce the risk of inhalation.
  • Emergency treatment: Be familiar with the emergency measures. If it comes into contact with skin or eyes, rinse immediately with plenty of water and seek medical help.

4. Experimental operation

  • Measuring and weighing: Use accurate weighing equipment to ensure the accuracy and repeatability of the experiment.
  • Reaction conditions: Adjust reaction conditions, such as temperature, pressure and solvent type, according to the purpose of the experiment.
  • Monitor the reaction: Use appropriate monitoring methods to track the progress of the reaction, such as TLC (Thin Layer Chromatography), GC (Gas Chromatography) or HPLC (High Performance Liquid Chromatography).

5. Waste Disposal

  • Classified collection: Collect dimethyltin oxide and its reaction by-products separately to avoid mixing with other chemical wastes.
  • Safe disposal: Follow local laws, regulations and laboratory policies and hand over waste to qualified disposal units.

6. Emergency response

  • Leakage treatment: Small leaks can be cleaned up with sand or inert absorbent materials. Large leaks should be handled by professionals.
  • Incident Reporting: Any incident involving dimethyltin oxide should be reported immediately and an appropriate incident response plan initiated.

7. Regulatory Compliance

Ensure that all laboratory operations comply with local and international safety and environmental regulations, including but not limited to the “Regulations on the Safety Management of Hazardous Chemicals”, “Occupational Health and Safety Management System”, etc.

8. Training and Education

All laboratory personnel must receive training on the properties and safe handling of dimethyltin oxide, including what to do in an emergency.

Summary

The use of dimethyltin oxide in the laboratory requires strict operating procedures and careful safety measures. By following the above guidelines, experimental risks can be reduced to the greatest extent, personnel safety can be ensured, and the efficiency and accuracy of experiments can be improved. In any case of uncertainty, professional chemical safety information should be consulted or the help of an experienced colleague should be sought. Always remember that safety is always the first principle in laboratory work.

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

Dimethyltin oxide chemical reaction equation

Dimethyltin Oxide, chemical formula C2H6OSn, as an organotin compound, plays an important role in chemical synthesis and industrial applications Role. Although dimethyltin oxide does not have as broad a basic chemical reaction equation as inorganic tin compounds, it can still participate in a series of chemical reactions under specific conditions, especially in organic synthesis, catalysis, and interactions with other chemical substances. middle. Several chemical reaction equations related to dimethyltin oxide are listed below to demonstrate its applications in laboratory and industry.

1. Synthesis reaction

The synthesis of dimethyltin oxide usually involves the reaction of a dimethyltin compound with oxygen or an oxidizing agent. For example, it is produced by the reaction of dimethyltin dichloride ((CH3)2SnCl2) with oxygen:

(3)22+2→(3)2+22(CH3​)2​SnCl2​+O2​→(CH3​ )2​SnO+2C l2​

However, the actual synthetic route may be more complex, involving catalysts and specific reaction conditions.

2. Catalytic reaction

Dimethyltin oxide is used as a catalyst in organic synthesis and participates in the synthesis or transformation of alcohols, ketones, esters and other compounds. For example, it can catalyze the reaction of alcohols with acid anhydrides to form esters:

+()2→(3)2′+2ROH+(RCOO)2​( CH3​)2​SnO​RCOOR′+H2​ O

Here R and R’ represent different alkyl or aryl groups.

3. Hydrolysis reaction

In the presence of water, dimethyltin oxide can hydrolyze to produce the corresponding alkoxides and acids:

(3)2+2→(3)2()2+2(C H3 ​)2​SnO+ H2 ​O→( CH3​)2​Sn(OH)2​+HO2​

In fact, the hydrolysis process may be more complex, and the products may also vary depending on the reaction conditions.

4. Reaction with acid

Dimethyltin oxide can react with strong acids, such as hydrochloric acid or nitric acid, to produce the corresponding salts and water:

(3)2+2→(3)22+2(CH3​) 2​SnO+2HCl→(C H3 ​)2​SnCl2​+H 2​ O

5. Replacement reaction with other metal salts

Dimethyltin oxide can react with certain metal salts to replace metal ions and generate new organic metal compounds. For example, reaction with copper sulfate may produce dimethyltin disulfate:

(3)2+4→(3)24+(C H3​)2​ SnO+ CuS O4​→(CH3​)2​ SnSO4 ​+CuO

However, the above reaction equation is only an example, and the actual reaction may be affected by reaction conditions, catalysts and side reactions.

6. As a reducing agent

Under certain conditions, dimethyltin oxide can be used as a reducing agent to reduce certain compounds. For example, it can reduce certain metal ions:

(3)2+2+→(3)22++2(−1 )+(CH3 ​)2​SnO+ 2M n+→( CH3​)2​Sn 2+ +2M(n−1)+

M here represents the metal ion, and n represents its oxidation state.

Summary

The chemical reaction equation of dimethyltin oxide demonstrates its versatility in chemical synthesis, catalysis, and metal ion replacement. However, due to the characteristics of dimethyltin oxide and the diversity of reaction conditions, practical applications may require adjustment of reaction conditions, including temperature, pressure, solvent selection, and catalyst use, according to specific goals and reaction systems. Additionally, due to the possible toxicity of dimethyltin oxide, all experiments should be performed under appropriate personal protection and safety conditions, following laboratory safety guidelines and chemical handling regulations.

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 dimethyltin oxide in organic synthesis

Dimethyltin Oxide (Dimethyltin Oxide), chemical formula C2H6OSn, is an important organotin compound because of its unique chemical properties. Plays a key role in organic synthesis. This compound is known for its excellent catalytic properties, especially in promoting esterification, acetalization and other organic transformation reactions. Below we will discuss in detail some of the main applications of dimethyltin oxide in organic synthesis.

1. Catalysis of esterification reaction

Esterification reaction is one of the common types of reactions in organic synthesis. It usually involves the reaction between alcohol and carboxylic acid or its derivatives (such as acid anhydride, acid halide) to produce ester and water. Dimethyltin oxide acts as an effective catalyst to speed up this process, increase yields and reduce the severity of the required reaction conditions. For example, in an esterification reaction, alcohol and anhydride react in the presence of dimethyltin oxide to form ester compounds:

−+(′)2=→(3)2−−()−′ +2R−OH+(R′)2C=O(CH3​) 2​SnO​R−O−C(O)−R′+H 2​O

2. Formation of acetals and ketals

Acetals and ketals are formed by the reaction of alcohols and aldehydes or ketones under acidic or basic conditions. These compounds have a wide range of applications in organic chemistry, such as as protecting groups or as intermediates in synthetic routes. Dimethyltin oxide can effectively catalyze this type of reaction, promote the condensation of alcohols with aldehydes or ketones, and form a more stable acetal or ketal structure:

−+′→(3)2−−′+2R−OH+ R′CHO(CH3​)2​Sn O​ R−O−R′+H 2​O

3. Preparation of other organotin compounds

Dimethyltin oxide is not only an excellent catalyst in itself, but can also be used as a precursor to prepare other organotin compounds. For example, it can be converted into dimethyl stannous ((CH3)2SnH) and tin lactones (Sn-lactones) through reduction or other reactions, the latter of which are also widely used in organic synthesis:

(3)2+2→(3)2+2(CH3​)2​SnO+H2​→(CH3​)2​SnH+HO2​

4. Application in optoelectronic materials

In addition to the traditional field of organic synthesis, dimethyltin oxide is also used in the development of new organic photovoltaic materials due to its unique photoelectric properties. It can be used as a component of the electron transport layer to improve the efficiency and stability of organic solar cells, thanks to its good charge transport capabilities and chemical stability.

5. Additives as curing agents and preservatives

In the coating and dye industry, dimethyltin oxide can be used as a curing agent or preservative additive to improve product performance.�It helps speed up the curing process of the coating while increasing its resistance to environmental factors and extending the service life of the product.

Safety and Precautions

Although dimethyltin oxide has many advantages in organic synthesis, it must be used with caution. Organotin compounds generally have a certain degree of toxicity, especially long-term exposure or high doses, which may affect human health. Therefore, appropriate safety measures should be taken when handling dimethyltin oxide, including wearing personal protective equipment, operating in a well-ventilated environment, and following chemical safety guidelines.

In short, dimethyltin oxide has occupied a place in the field of organic synthesis with its excellent catalytic performance and versatility. It has a wide range of applications from traditional esterification and condensation reactions to the development of cutting-edge optoelectronic materials. prospect. However, its use should always follow strict safety regulations to ensure the health and safety of operators.

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

Catalyst role of butylstannic acid in powder coatings

Butylstannic acid, with the chemical formula C4H10O2Sn, is a white powdery compound that is widely used as a catalyst in the chemical industry. Especially in the powder coating industry, it plays a key role as a catalyst for esterification reactions. Powder coatings have become an important branch of the modern coatings industry due to their environmentally friendly properties, high durability and economic benefits. They are widely used in the coating of home appliances, automobiles, furniture and various metal products.

Powder coating overview

Powder coating is a dry powder form of coating that does not contain volatile carriers such as solvents or water. It is mainly composed of resins, pigments, fillers and additives. The solidification process is usually carried out at higher temperatures, using heat to melt the powder and form a continuous film. This process relies on the cross-linking reaction of polymer resin, and the catalyst plays a key role in accelerating the reaction rate and controlling the reaction conditions.

Catalyst function of butylstannic acid

Butylstannic acid, as an efficient esterification catalyst, can significantly improve the reaction speed and efficiency during the synthesis of polyester resin for powder coatings. In the synthesis of polyester resin, esterification reaction is one of the core steps, involving the reaction between acid and alcohol to generate ester compounds and water. Butylstannic acid can effectively promote the esterification reaction between acid and alcohol, thereby accelerating the formation of polyester resin while ensuring the molecular weight distribution and physical properties of the product.

Application Advantages

Using butylstannic acid as a catalyst has the following significant advantages:

  • Reaction rate improvement: Butylstannic acid can significantly increase the esterification reaction rate and shorten the polyester resin synthesis cycle.
  • Product quality control: By optimizing the amount of catalyst, the molecular weight and molecular weight distribution of the polyester resin can be better controlled, thereby affecting the performance of the powder coating.
  • Environmental protection: Compared with other catalysts, butylstannic acid does not produce harmful by-products after the reaction, reducing environmental pollution.
  • Economy: Due to the improved reaction efficiency, energy consumption and production costs are reduced, and the overall economic benefits are improved.

Safety and environmental considerations

Although butylstannic acid exhibits excellent catalytic performance in industrial applications, it also has certain safety and environmental issues. Butylstannic acid is an organotin compound, which may have adverse effects on the environment and human health at high concentrations. Therefore, appropriate protective measures need to be taken during production and use to ensure the safety of operators and comply with relevant regulatory requirements to reduce potential harm to the environment.

Conclusion

Butylstannic acid, as a catalyst in the synthesis of polyester resin for powder coatings, can not only accelerate the reaction process and improve production efficiency, but also help manufacturers control product quality and achieve higher economic benefits. However, its application also needs to take into account environmental protection and occupational health and safety to ensure sustainable development. With the advancement of technology, finding more environmentally friendly and efficient catalyst alternatives will also be an important direction for future research in the powder coating 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

Safety Assessment and Handling Guidelines for Butylstannic Acid

1. Chemical properties and safety overview

Butylstannic acid (C4H10O2Sn), also known as monobutyltin oxide, is a catalyst widely used in the chemical industry. It usually appears as colorless crystals or white powder, insoluble in water, but soluble in strong alkali and mineral acids. Although butylstannic acid plays an important role in a variety of industrial processes, it is also classified as a toxic chemical that is irritating and potentially harmful to human health and the environment.

2. Health risk assessment

Butylstannic acid and its derivatives may cause respiratory, skin and eye irritation. Inhalation of its dust or vapor may cause respiratory tract irritation and lung damage; skin contact may cause erythema, itching and rash; eye contact may cause severe eye irritation and damage. Prolonged or repeated exposure may cause adverse effects on the nervous and reproductive systems. In addition, swallowing or inhaling butylstannic acid may cause symptoms of poisoning, including nausea, vomiting, abdominal pain, and gastrointestinal damage.

3. Environmental Risk Assessment

Butylstannic acid may be toxic to aquatic life and may cause long-term negative effects on the environment. In the natural environment, it is not easily degraded and may accumulate in soil and water, posing a threat to the ecosystem.

4. Storage and transportation

  • Storage: Butylstannic acid should be stored in a dry, cool, well-ventilated place, away from fire, heat, acids, bases and organic solvents. It should be stored in airtight containers to prevent moisture and air from entering to avoid chemical reactions.
  • Transportation: Pack and label in accordance with the regulations for toxic substances, use special containers, and ensure that the containers are sealed to avoid leakage. Severe vibrations and high temperature environments should be avoided during transportation.

5. Personal Protective Equipment (PPE)

  • When handling butylstannic acid, appropriate personal protective equipment should be worn, including but not limited to:
    • Chemical safety glasses or face shield to protect eyes from splashes and dust.
    • Chemical resistant gloves to prevent skin contact.
    • Dust mask or respirator to prevent inhalation of dust or vapors.
    • Protective clothing to reduce the risk of physical exposure to chemicals.

6. Emergency response

  • Inhalation: Immediately move the victim to fresh air, keep breathing smoothly, perform artificial respiration if necessary, and seek medical attention immediately.
  • Skin contact: Take off contaminated clothing immediately, rinse skin with plenty of water for at least 15 minutes, and then seek medical advice.
  • Eye contact: Open your eyelids immediately, flush your eyes with running water for at least 15 minutes, do not rub your eyes, and then seek medical advice.
  • Ingestion: Do not induce vomiting, seek medical assistance immediately.

7. Leakage treatment

  • Small leakage: Use a broom or brush to collect the leakage, place it in a sealable container, and dispose according to local regulations.
  • Significant spills: A professional emergency response team should be notified immediately, avoid direct contact with the spill, use appropriate absorbent materials to clean up, and ensure good ventilation.

8. Disposal

Butylstannic acid and its packaging should be safely disposed of in accordance with local toxic waste management regulations and should not be dumped or burned at will.

9. Conclusion

Although butylstannic acid plays an indispensable role in industry, its inherent dangers cannot be ignored. By strictly adhering to the above safe operating procedures and guidelines, the hazards to human health and the environment can be reduced and safe and sustainable chemical operations can be ensured.

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

The role of butylstannic acid in the production of unsaturated polyester resin

Unsaturated Polyester Resins (UPR) is an important type of thermosetting resin, widely used in composite materials, anti-corrosion coatings, Building decoration, electrical insulation and other fields. Its unique properties, such as good mechanical properties, corrosion resistance, processability, and relatively low cost, make it indispensable in multiple industries. Butyl(oxo)stannanol, as a type of efficient catalyst, plays a key role in the production process of unsaturated polyester resin.

The production principle of unsaturated polyester resin

The preparation of unsaturated polyester resin mainly involves the polycondensation reaction of polyols and polybasic acids to form a polyester main chain with unsaturated bonds. In this process, the role of the catalyst is crucial. It can accelerate the esterification reaction and control the molecular weight and molecular weight distribution, thus affecting the performance of the resin. Typical raw materials for the production of unsaturated polyester resin include unsaturated dibasic acids (such as maleic anhydride), saturated dibasic acids (such as phthalic anhydride), glycols (such as propylene glycol), etc.

Catalyst function of butylstannic acid

The role of butylstannic acid in the production of unsaturated polyester resin is mainly reflected in the catalytic esterification reaction. Esterification is the process of converting acids and alcohols into esters and water and is critical to the synthesis of resins. Butylstannic acid promotes esterification reaction through the following mechanism:

  1. Increase the reaction rate: Butylstannic acid can significantly increase the speed of the esterification reaction, allowing the resin synthesis to be completed in a shorter time, improving production efficiency.
  2. Control molecular weight: By adjusting the amount of butylstannic acid added, the molecular weight and molecular weight distribution of the resin can be effectively controlled, which is extremely important for adjusting the viscosity, curing speed of the resin, and the mechanical strength and toughness of the product. .
  3. Improve product quality: Using butylstannic acid as a catalyst helps to obtain a more uniform and stable quality resin, which is beneficial to subsequent processing and product performance.

Precautions when using butylstannic acid

Although butylstannic acid provides significant benefits in the production of unsaturated polyester resins, there are potential safety and environmental issues that need to be noted in actual operations. Butylstannic acid is an organotin compound. Such substances may have certain effects on the environment and human health. Therefore, safety regulations should be strictly followed when used, appropriate personal protective equipment should be used, and good ventilation in the work area should be ensured.

Application examples

In the manufacturing of composite materials such as Sheet Molding Compound (SMC), Bulk Molding Compound (BMC) and Hand Lay-Up, unsaturated polyester resin is used as The addition of butylstannic acid as the base material can significantly improve production efficiency and product quality, and is the key to achieving large-scale industrial production.

Conclusion

Butylstannic acid plays a vital role as a catalyst in the production of unsaturated polyester resin. It not only improves the reaction rate and controls the molecular weight, but also The quality and performance of the resin are guaranteed. However, its use needs to be combined with strict safety and environmental management measures to ensure the sustainability and safety of the production process. With the development of technology, exploring more environmentally friendly and efficient catalysts will also become one of the directions of future research.

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

Performance analysis of butylstannic acid as plastic stabilizer

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