A kind of PVC resin oil-soluble terminator and preparation method thereof

A PVC resin, oil-soluble technology, applied in the field of PVC resin oil-soluble terminator and its preparation, can solve the problem of polyvinyl chloride thermal stability and thermal aging whiteness index not up to standard, complex preparation process of terminator, environment and operators Harm and other issues, to achieve low cost of raw materials, improve heat resistance and chemical stability, thermal stability and good processing performance

Active Publication Date: 2020-07-14
新沂市星辰新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Bisphenol A and ATSC, two polymerization terminators, are widely used in terminators due to their good polymerization termination effect, but they are both highly toxic, causing great harm to the environment and operators, and The existing terminator preparation process is complicated, the reaction temperature is high, the time is long, the equipment investment requirements are large, the equipment requirements are high, and the production efficiency is low. At the same time, there are also technical problems such as the thermal stability of polyvinyl chloride and the whiteness index of thermal aging.

Method used

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Effect test

preparation example Construction

[0024] Another object of the present invention is to provide the preparation method of above-mentioned a kind of PVC resin oil-soluble terminator, comprising the following steps:

[0025] (1) Add the rare earth salt to the industrial methanol solution to prepare a rare earth salt alcohol solution with a rare earth ion concentration of 0.5mol / L, then add the organic acid in the formula amount, stir and dissolve at 30°C until the organic acid is completely dissolved Obtain the first mixed solution;

[0026] (2) Add epoxidized soybean oil in a formula amount into the reaction kettle, start stirring and heating, add dispersant, phenolic antioxidant, polymerization inhibitor and thickener at the same time, raise the temperature to 60°C and stir for 30 minutes to obtain the second mixed solution;

[0027] (3) Adding a formulated amount of stabilizer to the second mixed solution and keeping the temperature at 60°C and stirring for 30 minutes to obtain the third mixed solution;

[0...

Embodiment 2

[0030] A PVC resin oil-soluble terminator, comprising the following components in parts by weight: 10 parts of dispersant, 15 parts of phenolic antioxidant, 15 parts of stabilizer, 15 parts of polymerization inhibitor, 5 parts of thickener, epoxy resin 20 parts of soybean oil, 5 parts of rare earth salt alcohol solution, and 10 parts of organic acid; wherein the rare earth salt alcohol solution is rare earth salt, methanol solution and distilled water in a weight-to-volume ratio of 15g:50ml:150ml.

[0031] The dispersant is a phosphoric acid ester dispersant or a carboxylate dispersant; the phenolic antioxidant is 2,6-di-tert-butyl p-cresol, bisphenol A phosphite and 4,4 -one or more of methylene bis(2,6-di-tert-butylphenol); the stabilizer is a kind of fatty acid zinc or diisooctyl; the polymerization inhibitor is hydroquinone or One kind of diethylhydroxylamine; the thickener is one of bentonite, diatomaceous earth, and attapulgite; the epoxy value of the epoxidized soybean ...

Embodiment 3

[0038] A PVC resin oil-soluble terminator, comprising the following components by weight: 8 parts of dispersant, 10 parts of phenolic antioxidant, 10 parts of stabilizer, 10 parts of polymerization inhibitor, 3 parts of thickener, epoxy resin 15 parts of soybean oil, 3 parts of rare earth salt alcohol solution, and 6 parts of organic acid; wherein the rare earth salt alcohol solution is rare earth salt, methanol solution and distilled water according to the weight volume ratio of 10g: 35ml: 165ml.

[0039] The dispersant is a phosphoric acid ester dispersant or a carboxylate dispersant; the phenolic antioxidant is 2,6-di-tert-butyl p-cresol, bisphenol A phosphite and 4,4 -one or more of methylene bis(2,6-di-tert-butylphenol); the stabilizer is a kind of fatty acid zinc or diisooctyl; the polymerization inhibitor is hydroquinone or One kind of diethylhydroxylamine; the thickener is one of bentonite, diatomaceous earth, and attapulgite; the epoxy value of the epoxidized soybean ...

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Abstract

The invention discloses a PVC (Polyvinyl Chloride) resin oil-soluble termination agent and a preparation method thereof. The PVC resin oil-soluble termination agent selects epoxidized soybean oil as an oil solvent which is compounded with a rare-earth salt alcoholic solution, organic acid and other aids; all the components coordinate with one another to act, so that heat resistance and chemical stability of a product are greatly improved; the PVC resin oil-soluble termination agent has the advantages of good thermal stability and processing performance, high whiteness as well as low cost and easiness in obtaining of raw materials; the preparation method is simple and the termination effect is good; in addition, no harmful substances which pollute the environment are produced in a production process, so that the PVC resin oil-soluble termination agent is an environment-friendly termination agent and has high safety performance.

Description

technical field [0001] The invention belongs to the field of chemical industry, and in particular relates to a PVC resin oil-soluble terminator and a preparation method thereof. Background technique [0002] PVC (polyvinyl chloride) is an important member of the plastic family. In the production of PVC suspension polymerization, due to the decrease of monomers in the later stage of the polymerization reaction, the probability of polymerization termination increases, resulting in more low-molecular-weight polymers and branched chain polymers, and the content of terminal double bonds increases, and the chlorine atoms on allyl chloride are more concentrated. Unstable, thus affecting the thermal stability and processing performance of the product. Therefore, when the pressure drops to 0.10-0.15MPa in the later stage of the polymerization reaction, the reaction should be terminated immediately; and the quality of the terminator directly affects the progress of the termination re...

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): C08F2/42C08F14/06
CPCC08F2/42C08F14/06
Inventor陈宗海
Owner新沂市星辰新材料科技有限公司