Cradle to Consumer
Identity ID
649ce363-686c-4d29-9a23-c8a39a9a42e0
Materials
Associated ID
5478a73c-bda1-438e-bbe1-7b76aba8f037
Included activities starts
Included activities ends
Description
This dataset is a market dataset representing the consumption market of the region. The dataset includes the transport of the product from the gate to the consumption end, and the transport service is calculated based on the transport situation of the product in the region. Methyltin mercaptide heat stabilizer is mainly used in scenarios with strict requirements on plastic transparency and safety, including transparent PVC products, high-end PVC processing, composite modified materials, special plastic products, medical-grade PVC materials and other fields. This dataset includes the main raw and auxiliary materials, energy, waste and air emissions of the production process, where the waste gas treatment process is included within the dataset boundary, while infrastructure such as production equipment manufacturing and plant construction is not included within the dataset boundary; the data inventory is formed by merging data from multiple sources; the production activity of this product includes tin reaction, esterification reaction, water washing and other process steps. Ammonium chloride is a by-product of this production process.
Activity Description
The production activities of this product include tinization reaction, esterification reaction, water washing and other processes.
Process Description
Methyltin mercaptide heat stabilizers are a type of organotin heat stabilizer with methyltin mercaptide compounds as the core, including dimethyltin mercaptide (dimethyltin di(isooctyl thioglycolate)) and monomethyltin mercaptide (monomethyltris(isooctylthioglycolate)tin), etc. They mostly appear as light yellow to amber transparent liquids, and some products are white powders with a slight characteristic odor and low volatility. It is insoluble in water, easily soluble in organic solvents such as toluene, xylene, and esters. It has excellent compatibility with polyvinyl chloride (PVC) resin and can be evenly dispersed in the substrate. It has stable chemical properties, outstanding heat resistance and weather resistance, and has excellent transparency and processing fluidity. It has no heavy metal residue and complies with environmental standards. Industrially, it is mainly used in PVC transparent products (maintaining high transparency of products while inhibiting degradation), high-end PVC processing (used in precision injection molded parts, wire and cable insulation layers, automotive interior parts, etc., to improve processing stability and product durability); also used in PVC modified materials (with impact modification Agents and plasticizers are used to optimize the thermal stability and mechanical properties of the composite system), special plastic products (such as PVC products used in low-temperature environments to maintain good thermal stability and toughness), and can also be used in medical-grade PVC pipes, high-end packaging films and other scenes that have strict requirements on transparency and safety.
Time period
2016
2026
Geography
China,Shaanxi
Macroeconomic value
Business-as-Usual
Data validation
Yes
Technology
Current Technology
Technology comment
1. Tinning reaction: Put the tin powder and catalyst (calcium chloride) into the reactor at one time, pass in nitrogen to exhaust the air in the kettle, and then pass in methyl chloride. Tin tetrachloride is pumped into the kettle through a metering pump at different stages of the reaction. Methyl chloride, tin powder, tin tetrachloride and catalyst (calcium chloride) undergo a tinning reaction in the reactor. 2. Esterification reaction: In the reaction kettle, add base ester through a metering pump, then meter and introduce chloride from the chloride aqueous solution storage tank, and add ammonia water dropwise from the ammonia water storage tank through a metering pump. The reaction time is about 8 hours. All materials for the entire reaction are added through metering pumps in appropriate amounts and are completely reacted. The reaction is exothermic and requires cooling with cooling water. After the addition, continue stirring for a period of time, then transfer the reaction mixture to the esterification insulation kettle, heat it with hot water, and keep it at the specified temperature (50°C) for a period of time. After cooling to normal temperature, transfer the lower crude product under vacuum to the water washing kettle, and the upper aqueous layer (NH4Cl aqueous solution) enters the water storage tank and is sold periodically. 3. Water washing: After the crude product in the water washing kettle is washed, it is left to stratify and transferred to the intermediate tank. It is preheated for falling film evaporation to remove water and low-boiling fractions, and then enters the finished product tank. After cooling, the final product is obtained.