PVC stabilizer with good heat and light stability, and preparation method thereof

A light stability and stabilizer technology, applied in the field of PVC stabilizer and its preparation, can solve the problems of product color change, mechanical property decline, molecular chain breakage, etc., achieve convenient operation, improve thermal and light stability, and easy control of conditions Effect
CN106916335AActive Publication Date: 2017-07-04BEIJING UNIV OF CHEM TECH
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Patent Information

Authority / Receiving Office
CN Β· China
Current Assignee / Owner
BEIJING UNIV OF CHEM TECH
Publication Date
2017-07-04

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Abstract

The invention relates to a PVC stabilizer with good heat and light stability, and a preparation method thereof, and belongs to the technical field of PVC plastic assistants. The chemical structural formula of the PVC stabilizer is shown in the description; and in the formula, R is a carboxylic group, R1 is an organic acid radical, x is the valence of the R1, m is 0, 1, 2, 3, 4..., mx is less than n, M is a metal, and n is the valence of the metal. The preparation method comprises the following steps: carrying out an esterifying reaction on a phenyl diacid compound and 2,2,6,6-tetramethyl-4-piperidinol to generate a phenyl diacid ester of mono(tetramethylpiperidine), reacting the phenyl diacid ester of mono(tetramethylpiperidine) with the R1 acid and sodium hydroxide to generate a sodium salt, adding metal salt, and carrying out a metathesis reaction to obtain the target stabilizer, or directly reacting the phenyl diacid ester of mono(tetramethylpiperidine) with metal hydroxide or metal oxide at a high temperature to obtain the target stabilizer. The PVC stabilizer has good heat stability and good light stability, and the preparation method has the advantages of simplicity, easiness in condition control, good reappearance, and good development potential and application prospect.
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Description

technical field

[0001] The invention belongs to the technical field of PVC plastic additives, and in particular relates to a PVC stabilizer with thermal stability and light stability and a preparation method thereof. Background technique

[0002] Polyvinyl chloride (PVC) is the first general-purpose resin material in China and the second in the world. Its output is second only to polyethylene (PE). It has flame retardancy, chemical corrosion resistance and electrical insulation, but thermal stability and light resistance Relatively poor, limiting the scope of use of polyvinyl chloride products. Therefore, improving the thermal stability and light stability of polyvinyl chloride is particularly important for the development of polyvinyl chloride industry.

[0003] Due to its own structural defects, polyvinyl chloride is extremely sensitive to heat. During the heating process, hydrogen chloride will be released to produce a conjugated polyene structure with a color-producing ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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