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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

Active Publication Date: 2012-03-28
ZHEJIANG HIMPTON NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at present, most of the patents published in China are about the synthesis route and reaction process of organotin compounds, and the preparations are all high-purity organotin compounds, which have shortcomings such as imperfect lubrication system, high cost, insufficient market competitiveness, and environmental impact. some pollution

Method used

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  • Methyltin composite heat stabilizer and preparation method thereof
  • Methyltin composite heat stabilizer and preparation method thereof
  • Methyltin composite heat stabilizer and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0069] S, S', S''-tris(isooctyl thioglycolate)monomethyltin and S,S'-di(isooctyl mercaptoacetate)dimethyltin compositions with a mass ratio of 20:80 were respectively taken 68kg, isooctyl antimony trimercaptoacetate 15kg, calcium oleate, zinc isooctanoate mass ratio 3:1 mixture 8kg, epoxy soybean oil 3kg, triphenyl phosphite 2kg, pentaerythritol oleate 3kg and dimer aspart Mix 1kg of amino acid and put it into the reaction kettle, control the stirring speed at 80r / min, control the temperature at 65°C, mix and hold for 0.5h, then cool and filter to obtain 100kg of colorless and transparent liquid methyl tin composite heat stabilizer .

Embodiment 2

[0071] S, S', S''-tris(isooctyl thioglycolate)monomethyltin and S,S'-di(isooctyl mercaptoacetate)dimethyltin compositions with a mass ratio of 20:80 were respectively taken 62kg, isooctyl antimony pentamercaptoacetate 19kg, calcium isooctanoate, lanthanum isooctanoate mass ratio 2:1 mixture 9kg, epoxy linseed oil 3kg, stearyl benzoyl methane 1 kg, triphenyl phosphite 2kg, 3 kg of butyl stearate and 1 kg of catechol aminocarboxylic acid are mixed and put into a reactor, the stirring speed is controlled at 110 r / min, the temperature is controlled at 75 ° C, the mixing and holding time are 1.5 h, then cooled and filtered to obtain Color transparent liquid methyl tin compound heat stabilizer 100kg.

Embodiment 3

[0073] S, S', S''-tris(isooctyl thioglycolate)monomethyltin and S,S'-di(isooctyl mercaptoacetate)dimethyltin compositions with a mass ratio of 20:80 were respectively taken 56 kg, antimony oleate 19 kg, lanthanum isooctanoate 10 kg, epoxy castor oil 4 kg, dibenzoylmethane 2 kg, thiodipropionate 3 kg, trimethylolpropane oleate 4 kg and dimer Mix 2 kg of aspartic acid and put it into the reaction kettle, control the stirring speed at 120r / min, control the temperature at 85°C, mix and hold for 3 hours, then cool and filter to obtain a colorless and transparent liquid methyl tin composite heat stabilizer 100kg.

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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.

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

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08K5/00C08K5/58C08K5/59C08K5/098C08K5/1515C08K5/526C08K5/07C08L27/06
Inventor 高尔金唐伟孟建新陈建军梁生贵瞿英俊
Owner ZHEJIANG HIMPTON NEW MATERIAL
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