Methyltin composite heat stabilizer and preparation method thereof

A compound heat stabilizer, methyl tin technology, applied in the field of methyl tin compound heat stabilizer for PVC resin and its preparation, can solve the problems of insufficient market competitiveness, imperfect lubrication system, environmental pollution, etc., and achieve excellent Initial and long-term thermal stability, good lubrication system, and the effect of reducing production costs
CN101921405BActive Publication Date: 2012-03-28ZHEJIANG HIMPTON NEW MATERIAL
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
ZHEJIANG HIMPTON NEW MATERIAL
Publication Date
2012-03-28

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Abstract

The invention discloses a methyltin composite heat stabilizer, which comprises the following components in part by weight: 38 to 68 parts of methyl tin mercaptide, 15 to 25 parts of antimonide based compound, 8 to 12 parts of organic stabilizer of metallic soap, 3 to 5 parts of epoxy compound, 2 to 5 parts of antioxidant, 3 to 8 parts of lubricating agent and 1 to 2 parts of chelant, wherein the methyl tin mercaptide is a composite in which the mass ratio of S,S',S''-tris(isooctyl thioglycollate)-methyltin to S,S'-bis(isooctyl thioglycolate) dimethyltin is 20:80. The methyltin composite heat stabilizer has the advantages of high quality, low toxin, environmental protection, low tin content in the formula, strong practicability and wide application range; and materials prepared from the methyltin composite heat stabilizer, such as PVC sheets, pipes and blown films have the advantages of excellent initial and long-term heat stability, good lubrication system, no precipitation and good oxidation resistance, wherein the sheets and the blown films have good transparency.
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Description

technical field

[0001] The invention relates to a methyl tin composite heat stabilizer and a preparation method thereof, in particular to a methyl tin composite heat stabilizer for PVC resin and a preparation method thereof. Background technique

[0002] Polyvinyl chloride (PVC) is the second largest plastic species after polyethylene. It has high strength, excellent corrosion resistance and insulation. Its products are widely used in construction, electrical appliances, toys, packaging and other industries, especially It has its unique advantages in hard products. However, PVC has its structural defects. It is unstable when heated and decomposes to release hydrogen chloride gas. The solution is to add heat stabilizers to PVC processing.

[0003] At present, heat stabilizers widely used in the market include lead salt stabilizers, calcium-zinc composite stabilizers, rare earth stabilizers and organotin stabilizers, etc. Among them, organotin heat stabilizers are characteriz...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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