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Efficient composite PVC (polyvinyl chloride) heat stabilizer and production method thereof

A technology of compounding polyvinyl chloride and heat stabilizer is applied in the field of plastic additives, which can solve problems such as antimony compounds, and achieve the effects of easy industrial promotion, low processing cost, and reduction of tin content.

Active Publication Date: 2016-01-06
云南锡业锡化工材料有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Patent CN102675770A reports a tin-antimony-zinc composite heat stabilizer, but still contains antimony compound

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Stir 50kg of calcium 2-ethylhexanoate, 30kg of zinc 2-ethylhexanoate and 20kg of liquid paraffin in a reaction kettle for 30min, then add isooctyl tin monomethyl trimercaptoacetate and di 800kg of isooctyl tin methyl dimercaptoacetate mixture, 50kg of phenylenedioctyl phosphite, 50kg of epoxy soybean oil, continue to stir for 60min, and filter to obtain a colorless, clear and transparent liquid heat stabilizer with a yield of 99.5 %.

Embodiment 2

[0030] Stir 30kg of calcium stearate, 20kg of zinc stearate and 30kg of liquid paraffin in the reaction kettle for 40min, then add isooctyltin monomethyltrithioglycolate and isooctyldimethyldithioglycolate with a mass ratio of 50 / 50. 850kg of octyl tin mixture, 50kg of 4,4-diisoylidene bisphenol (12-14) carbon alkyl phosphite, 20kg of epoxy soybean oil, continue to stir for 50min, and filter to obtain a colorless, clear and transparent liquid heat-stable agent, the yield was 99.2%.

Embodiment 3

[0032] Stir 42kg of calcium 2-ethylhexanoate, 17kg of zinc stearate and 25kg of glycerin in the reaction kettle for 25min, then add 900kg of isooctyltin monomethyl trimercaptoacetate, 4,4-diisocyanobisphenol phosphorous acid (12-14) 6 kg of carbon alkyl ester, 10 kg of epoxidized soybean oil, continue to stir for 40 minutes, and filter to obtain a colorless, clear and transparent liquid heat stabilizer with a yield of 99.7%.

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PUM

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Abstract

The invention belongs to the field of plastic additives and particularly relates to an efficient composite PVC (polyvinyl chloride) heat stabilizer. The heat stabilizer is prepared from 80-98 parts of methyl tin mercaptide, 2-20 parts of a liquid calcium-zinc stabilizer, 0.1-5 parts of phosphite ester and 0.1-5 parts of epoxidized soybean oil. According to characteristics of the methyl tin mercaptide and the liquid calcium-zinc stabilizer, the heat stabilizer taking the methyl tin mercaptide and the liquid calcium-zinc stabilizer as main materials and the phosphite ester and the epoxidized soybean oil as auxiliary materials is formed. The heat stabilizer has the characteristics that the lubrication property of PVC melts is improved, the heat retention time of the melts is shortened, and the consumption of the heat stabilizer is reduced; the tin content of the methyl tin mercaptide heat stabilizer is decreased, and the consumption of rare metal tin is reduced; the PVC is low in smell and low in toxicity during processing; the heat stabilizer is easy to prepare, low in processing cost and convenient to popularize industrially.

Description

technical field [0001] The invention belongs to the field of plastic additives, in particular to a high-efficiency composite polyvinyl chloride heat stabilizer. Background technique [0002] Polyvinyl chloride products are a kind of synthetic plastics that are loved by human beings and widely used. The global usage ranks second among synthetic materials. However, polyvinyl chloride products are easy to degrade during processing and molding. If they are not suppressed, the physical properties of the products will be greatly reduced or even lose their use value. Heat stabilizers can effectively inhibit the degradation of polyvinyl chloride. [0003] At present, there are few reports about heat stabilizers at home and abroad. Patent CN101921405A reports a methyl tin composite heat stabilizer, but it needs to be prepared at a temperature between 65 and 120°C, and an antimony-based compound is added. Patent CN102675770A reports a tin-antimony-zinc composite heat stabilizer, but...

Claims

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Application Information

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IPC IPC(8): C08L27/06C08L91/00C08K5/00C08K5/58C08K5/524C08K5/098
Inventor 郭应辉赵保良易强顺王丽媛陈树
Owner 云南锡业锡化工材料有限责任公司
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