Application of dioctyltin dicocoate in plastic stabilizers

Application of dioctyltin dicocoate in plastic stabilizers

In the production and application of plastic products, heat stabilizers play a vital role. They can effectively inhibit the degradation of plastics caused by heat, light and other factors during processing and use, ensuring the physical and mechanical properties of the material. performance. Dioctyltin dicocoate (DOTE), as a highly efficient organotin compound, is a leader in the plastic stabilizer family, especially in the polyvinyl chloride (PVC) industry, showing excellent performance.

Introduction

The rapid development of the plastics industry has placed an increasing demand for heat stabilizers, and the improvement of environmental protection and safety standards has prompted the industry to seek better stabilizer solutions. Due to its unique chemical structure, dioctyltin dicocoate not only has excellent thermal stability, but also exhibits low toxicity and good biocompatibility, making it an ideal choice to replace traditional lead-containing or highly toxic stabilizers.

Mechanism of action

The mechanism of action of dioctyltin dicocoate in PVC processing mainly involves chain transfer reaction and free radical capture. It can effectively capture HCl generated by thermal degradation of PVC, prevent hydrogen chloride from further causing PVC molecular chain breakage, and at the same time regulate the growth of the polymer chain through chain transfer and reduce the formation of unstable ends. In addition, its long chain structure provides good steric hindrance effect, protecting PVC from thermal oxygen and ultraviolet attack, thereby significantly improving the weather resistance and service life of the product.

Application areas

  1. PVC soft products: Among soft products such as wires and cables, floor leather, and artificial leather, DOTE ensures the beauty and durability of the products with its excellent transparency and low exudation. Meets food contact grade safety requirements.
  2. PVC hard products: Such as door and window profiles, pipes, plates, etc., DOTE helps to improve the processing fluidity of the products, reduce defects such as fish eyes and cracks during the processing, and improve the quality of the products. dimensional stability.
  3. Packaging materials: In food packaging materials such as films, bottle caps, and plastic wrap, DOTE acts as a non-toxic stabilizer to ensure food safety while giving the materials good sealing and moisture resistance. .

Performance Advantages

  • Low toxicity: Compared with traditional lead salts and some organotin stabilizers, the low toxicity of DOTE makes it widely used in food contact plastic products.
  • Transparency: In transparent PVC products, the use of DOTE will hardly cause an increase in haze, maintaining the high transparency of the material.
  • Weather resistance: Excellent resistance to oxidation and UV rays, extending the service life of plastic products used outdoors.
  • Processing performance: Good lubricity reduces wear on processing equipment and improves production efficiency.

Challenges and Limitations

Although dioctyltin dicocoate has shown many advantages, its potential ecological risks still require attention. Organotin compounds are not easily degraded in the environment and may cause cumulative toxicity to aquatic organisms. Therefore, the use of organotin has begun to be strictly regulated internationally, driving the industry to develop more environmentally friendly alternatives, such as the development of organocalcium-zinc stabilizers and new organotin stabilizers.

Conclusion

Dioctyltin dicocoate has become an indispensable part of the modern plastics industry with its unique properties in the field of plastic stabilizers, especially in PVC products. However, as the global awareness of sustainable development and environmental protection increases, developing greener and more efficient stabilizer systems to balance performance and environmental impact will be an important issue in the field of plastic additives in the future. Therefore, the research and application of dioctyltin dicocoate should not only ensure product performance, but also continuously explore measures to mitigate its environmental impact, and actively seek and evaluate a new generation of alternatives to meet the needs of the sustainable development of the plastics industry.

Extended reading:

Dabco amine catalyst/Low density sponge catalyst

High efficiency amine catalyst/Dabco amine catalyst

Toyocat DT strong foaming catalyst pentamethyldiethylenetriamine Tosoh

NT CAT PC-41

NT CAT PC-8

NT CAT A-33

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

DBU – Amine Catalysts (newtopchem.com)

High Quality 3164-85-0 / K-15 Catalyst / Potassium Isooctanoate

High Quality Bismuth Octoate / 67874-71-9 / Bismuth 2-Ethylhexanoate<

Application of dioctyltin diacetate in plastic stabilizers

Diethylhexyltin Diacetate (DEHT or DEHT-DOT), as a highly efficient organotin compound, is widely used in the field of plastic stabilizers, especially in the processing and performance improvement of polyvinyl chloride (PVC) materials. plays an important role. Its unique chemical structure and performance characteristics make it an ideal additive for improving the thermal stability, light stability and aging resistance of plastic products. The application and advantages of dioctyltin diacetate in plastic stabilizers are described in detail below.

Enhanced thermal stability
PVC is prone to dehydrochlorination during high-temperature processing or long-term use, resulting in material discoloration and reduced mechanical properties. As a thermal stabilizer, dioctyltin diacetate can effectively capture free radicals generated by the decomposition of PVC and inhibit the dehydrochlorination reaction, thereby maintaining the thermal stability of the material. It chemically reacts with unstable chlorine atoms in PVC to form a stable complex, which reduces unstable factors inside PVC and extends the service life of the product.

Improved photostability
Light exposure is one of the main causes of aging of PVC materials. Dioctyltin diacetate has good light stability and can effectively resist the damaging effects of ultraviolet rays on PVC and reduce the yellowing and embrittlement of materials caused by light. By absorbing or shielding ultraviolet rays, it can protect the molecular structure of PVC from damage and maintain the transparency and beauty of plastic products, which is especially important for plastic products used outdoors.

Anti-aging properties
Plastic products will suffer from various aging processes such as oxidation and thermo-oxidative aging during long-term use and environmental changes. Dioctyltin diacetate forms a protective layer that prevents oxygen and other harmful substances from penetrating into the interior of PVC and delays the aging process. Its presence can also improve the weather resistance of PVC and maintain good performance even in harsh climate conditions.

Processing performance optimization
Dioctyltin diacetate also exhibits good processing aid properties during PVC processing. It can reduce the melting temperature of PVC, improve melt fluidity, make the processing process smoother, reduce equipment wear, and effectively prevent the occurrence of processing defects such as “fish eyes”, improving the surface quality and yield of products. At the same time, its lubricity helps reduce friction heat during processing, further enhancing the physical and mechanical properties of the product.

Environmental protection advantages
Compared with traditional lead salt stabilizers, dioctyltin diacetate has lower toxicity and meets the requirements of current environmental regulations, especially for sensitive applications such as food contact grade and children’s toys. As the global awareness of environmental protection increases, more and more countries and regions have begun to restrict or ban the use of lead salt stabilizers. As an environmentally friendly alternative, the market demand for dioctyltin diacetate continues to grow.

Application areas
In the plastics industry, dioctyltin diacetate is widely used in the production of wire and cable insulation layers, PVC doors and windows, films, floors, hoses, injection molded parts and other products. Especially in products that have strict requirements on transparency and health and safety, such as food packaging materials, medical equipment, etc., its application is more common.

Conclusion
To sum up, dioctyltin diacetate, as a plastic stabilizer, has become a plastic stabilizer due to its excellent performance in improving the thermal stability, light stability and aging resistance of PVC products, as well as its advantages in environmental protection and processing performance optimization. An indispensable additive for the processing industry. With the advancement of technology and increasingly stringent environmental standards, its application in the field of plastic stabilizers will become more extensive, and it will also promote the development of the industry in a more environmentally friendly and high-performance direction.
Further reading:

Dabco amine catalyst/Low density sponge catalyst

High efficiency amine catalyst/Dabco amine catalyst

Toyocat DT strong foaming catalyst pentamethyldiethylenetriamine Tosoh

NT CAT PC-41

NT CAT PC-8

NT CAT A-33

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

DBU – Amine Catalysts (newtopchem.com)
High Quality 3164-85-0 / K-15 Catalyst / Potassium Isooctanoate
High Quality Bismuth Octoate / 67874-71-9 / Bismuth 2-Ethylhexanoate

Dioctyltin diacetate MSDS Safety Data Sheet

Diethylhexyltin Diacetate, as an organotin compound, has important application value in many fields. However, like all chemicals, their use, storage and disposal processes need to strictly follow the guidelines of the Material Safety Data Sheet (MSDS) to ensure personnel safety, environmental protection and compliance operations. The following is a summary of key safety information about dioctyltin diacetate based on general MSDS requirements. The specific content may vary depending on the manufacturer and product.

1. Chemical and corporate identification
Chemical name in Chinese: Dioctyltin diacetate
CAS number: The specific CAS number needs to be determined according to the product
Molecular formula: C20H36O4Sn
Molecular weight: about 486.11 g/mol
Manufacturer information: including manufacturer name, address, emergency contact number, etc.
2. Hazard Overview
Dioctyltin diacetate is an organotin compound and may have the following hazards:

Health Hazards: Prolonged or repeated exposure may cause neurological damage, reproductive effects, and skin and eye irritation.
Environmental Hazards: Toxic to aquatic life and may cause lasting environmental effects.
Physical hazards: Flammable, there is a risk of combustion and explosion when exposed to open flames, high temperatures or oxidants.
3. Ingredients/composition information
Main ingredient: dioctyltin diacetate, the specific content should be based on product specifications.
Hazardous ingredients: organotin compounds, please refer to the detailed MSDS for specific toxicological data.
4. First aid measures
Inhalation: Move the victim quickly to fresh air, keep the respiratory tract open, and perform artificial respiration or oxygen if necessary.
Skin contact: Take off contaminated clothing immediately and rinse skin with plenty of water for at least 15 minutes.
Eye Contact: Rinse immediately with plenty of water for at least 15 minutes and seek medical assistance if necessary.
Ingestion: Do not induce vomiting, drink enough water immediately to dilute, and then seek medical advice.
5. Fire-fighting measures
Fire extinguishing media: dry powder, carbon dioxide, foam fire extinguisher, avoid using direct flow of water.
Special fire fighting methods: Wear protective equipment to prevent smoke inhalation, control the source of leaks, and prevent them from flowing into sewers and water sources.
Actions for non-firefighters: Stay away from the fire scene and evacuate upwind.
6. Accidental leakage measures
Personal Protection: Wear protective clothing, gloves, goggles and respirator.
Leakage treatment: Avoid direct contact, absorb with sand or other inert materials, collect and place in a closed container, and dispose of it as hazardous waste.
7. Operation and storage
Operation precautions: Operate in a well-ventilated environment, avoid contact with heat sources and sparks, and operators should receive professional training.
Storage conditions: Store in a cool, dry, well-ventilated place, away from fire, heat and incompatible substances.
8. Exposure controls/personal protection
Respiratory protection: Wear a suitable dust mask or respirator in environments where dust or vapor is generated.
Skin protection: Wear protective clothing and chemical-resistant gloves.
Eye protection: Wear chemical safety glasses or face shield.
9. Physical and chemical properties
Appearance and properties: colorless to light yellow transparent liquid.
Melting point: Depends on product purity and specific conditions.
Boiling point: >200°C (estimated, varies with pressure).
Density: about 1.055-1.075 g/cm³.
Solubility: Insoluble in water, soluble in most organic solvents.
10. Stability and reactivity
Stability: Stable under recommended storage conditions, avoid strong acids, bases and strong oxidizing agents.
Avoid contact with: moisture, strong alkali, strong oxidants, etc.
11. Disposal
Disposal should be carried out in accordance with national and regional laws and regulations on hazardous wastes and should not be discharged randomly.

12. Shipping Information
UN number: The specific number must refer to MSDS or relevant regulations.
Packaging category: Class II/III dangerous goods, the specific classification is based on the risk of the product.
13. Regulatory information
Comply with relevant laws and regulations such as the Globally Harmonized System of Classification and Labeling of Chemicals (GHS), the EU REACH regulations, and China’s “Regulations on the Safety Management of Hazardous Chemicals”.

In summary, correctly understanding and implementing the MSDS content of dioctyltin diacetate is crucial to ensuring operational safety and maintaining the ecological environment. Users must carefully read and follow the new MSDS instructions provided by the manufacturer before use.
Further reading:

Dabco amine catalyst/Low density sponge catalyst

High efficiency amine catalyst/Dabco amine catalyst

Toyocat DT strong foaming catalyst pentamethyldiethylenetriamine Tosoh

NT CAT PC-41

NT CAT PC-8

NT CAT A-33

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

DBU – Amine Catalysts (newtopchem.com)

High Quality 3164-85-0 / K-15 Catalyst / Potassium Isooctanoate

High Quality Bismuth Octoate / 67874-71-9 / Bismuth 2-Ethylhexanoate