Efficient anti-precipitation liquid composite heat stabilizer and preparation method thereof
A composite heat stabilizer and anti-precipitation technology, which is applied in the field of high-efficiency anti-separation liquid composite heat stabilizer and its preparation, can solve the problems of affecting the use effect, short storage time, poor stability, etc., saving dosage and improving compatibility. , fast absorption effect
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Embodiment 1
[0037] The preparation of barium carboxylate: mix 200kg oleic acid, 100kg isooctanoic acid, 130kg barium hydroxide monohydrate and 5kg polyethylene glycol 400 (phase transfer catalyst), stir, slowly heat up to 100-105 ℃, react for 2 hours, reduce Press and dehydrate for 40 minutes, filter to obtain 540 kg of barium carboxylate, and the barium content is 22.8%.
Embodiment 2
[0039] Preparation of zinc mercapto: 120kg of isooctyl thioglycolate and 15kg of zinc oxide were mixed and stirred, slowly heated to 70-80°C, reacted for 3 hours, dehydrated under reduced pressure for 35 minutes, and filtered to obtain 130kg of fatty acid zinc with a zinc content of 7.12% .
Embodiment 3
[0041] A high-efficiency anti-precipitation liquid composite heat stabilizer: mix 40kg of barium carboxylate and 10kg of zinc mercapto evenly, stir, heat to 75°C, add 4kg of KH550, 2kg of KH560, heat to 85°C, add 12kg of D40 solvent, 6kg of D60 solvent , D100 solvent 6kg, butanediol methyl ether 2kg, then add phenol-free phosphite 15kg, heat preservation reaction for 30 minutes, then add 5kg tetrakis [methyl-β-(3,5-di-tert-butyl-4-hydroxybenzene Base) propionate] pentaerythritol ester, at 85 ℃ for 30 minutes, cooling, filtering, to obtain 102kg of liquid composite thermal stabilizer.
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