Special composite heat stabilizer for polyvinyl chloride cards and preparation method of special composite heat stabilizer
A compound heat stabilizer and polyvinyl chloride technology, which is applied in the field of processing aids to achieve the effects of low processing cost, improved oil resistance, and enhanced plasticizing performance
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[0028] Example 1
[0029] Put 700kg of a mixture of isooctyl tin monomethyl trimercaptoacetate and isooctyl tin dimethyl dimercaptoacetate with a mass ratio of 10 / 90 into the reactor, control the stirring speed to 50r / min, and add triethyl citrate respectively Ester 260kg, pentaerythritol oleate 30kg, 2-hydroxy-4-n-octyloxybenzophenone 10kg, stirred for 30min and filtered to obtain 1000kg of a colorless, clear and transparent liquid composite heat stabilizer with a yield of 100%.
Example Embodiment
[0030] Example 2
[0031] Put 750 kg of a mixture of isooctyl tin monomethyl trithioglycolate and tin dimethyl dimercaptoacetate with a mass ratio of 20 / 80 into the reactor, control the stirring speed to 40r / min, and add tributyl citrate respectively 200kg of ester, 45kg of oleic acid glyceride, 5kg of 2-hydroxy-4-methoxybenzophenone, stirred for 50min and filtered to obtain 998kg of compound heat stabilizer in the form of a colorless, clear and transparent liquid with a yield of 99.8%.
Example Embodiment
[0032] Example 3
[0033] Put 900 kg of a mixture of isooctyl tin monomethyl trithioglycolate and tin dimethyl dimercaptoacetate with a mass ratio of 90 / 10 into the reactor, control the stirring speed to 35r / min, and add acetyl trithioglycolate respectively 80kg of butyl ester, 18kg of pentaerythritol oleate, 2kg of 2,4-dihydroxybenzophenone, stirred for 40min and filtered to obtain 999kg of compound heat stabilizer in the form of a colorless, clear and transparent liquid with a yield of 99.9%.
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