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Polyol Esters and Their Application in Processing of Halovinyl Polymers

A technology of vinyl halides and polyol esters, applied in the field of polyol esters, can solve the problems of high price of dipentaerythritol, influence on product transparency, poor compatibility of plasticizers, etc., achieve good compatibility and prolong thermal stability time , Improve the effect of thermal processing performance

Active Publication Date: 2020-07-14
济南金昌树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

However, polyols have strong water solubility, poor compatibility with PVC and plasticizers, and are easy to sublime, so they are easy to precipitate and deposit on the equipment during processing, affecting the transparency of the product, and the price of dipentaerythritol is relatively high

Method used

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  • Polyol Esters and Their Application in Processing of Halovinyl Polymers
  • Polyol Esters and Their Application in Processing of Halovinyl Polymers
  • Polyol Esters and Their Application in Processing of Halovinyl Polymers

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Add terephthalic acid and dipentaerythritol into the reaction flask at a molar ratio of 1:2, control the temperature at 170°C until no water vapor overflows, and add 0.75% of the total mass of terephthalic acid as a tetrabutyl titanate catalyst , continue to react until anhydrous, draw negative pressure for 30 minutes, pour out and cool to obtain sample 1, the product is dipentaerythritol terephthalate.

Embodiment 2

[0047] Add phthalic anhydride and monopentaerythritol into the reaction flask at a molar ratio of 1:2, control the temperature at 190°C until no water vapor escapes, add 0.5% tetrabutyl titanate of the total mass of phthalic anhydride Ester catalyst, continue to react until there is no water, pump negative pressure for 30 minutes, pour out and cool to obtain sample 2, and the product is monopentaerythritol phthalate.

Embodiment 3

[0049] Add dipentaerythritol and adipic acid into a four-necked flask at a molar ratio of 2:1, and react at 160°C under temperature control until no water vapor overflows, add 0.75% tetrabutyl titanate catalyst based on the mass of adipic acid, and continue the reaction To anhydrous, negative pressure was pumped for 30 minutes, poured out and cooled to obtain sample 3, the product was dipentaerythritol adipate.

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Abstract

The invention discloses polyol ester and application of the same to processing of a halogenated vinyl polymer. The polyol ester is prepared by subjecting one of polyols and one selected from a group consisting of carboxylic acid and acid anhydrides to esterification or subjecting one of polyols and one of the esters of carboxylic acid to transesterification. The polyol ester provided by the invention has good compatibility with the halogenated vinyl polymer and can improve the hot-working performance of the halogenated vinyl polymer when cooperated with a heat stabilizer; in particular, the polyol ester can inhibit or alleviate the phenomenon of zinc burning of a zinc-containing heat stabilizer in the later phase of hot-working when cooperated with the zinc-containing heat stabilizer; so the whiteness of a halogenated vinyl polymer product is improved, later zinc burning is effectively inhibited, the thermostabilization time, particularly medium-and-long-term heat stability, of the halogenated vinyl polymer (especially PVC) is substantially prolonged, and the defect of poor stability in the later phase of the zinc-containing heat stabilizer is compensated for. The polyol ester has good application prospects in the field of processing of the halogenated vinyl polymer, especially PVC.

Description

technical field [0001] The present invention relates to a new polyol ester, and also relates to the application of the polyol ester to improve its stability in the processing of halogenated vinyl polymers, especially relates to the use of the polyol ester together with a zinc-containing heat stabilizer to inhibit or The application of zinc-containing heat stabilizers to reduce the zinc burning phenomenon in the late stage of halovinyl polymers. Background technique [0002] Polyvinyl chloride (PVC) is one of the five general-purpose synthetic resins, and it is also the earliest thermoplastic variety developed in China. In the past few decades, although PVC has inherent poor thermal stability due to its own structural defects, the PVC resin mixture has a large bonding friction coefficient with the metal inner wall surface during thermal processing, resulting in poor mold release, etc. problems, but did not affect the development of the PVC industry. With the continuous deve...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C67/08C07C69/80C07C69/44C07C69/704C07C69/68C07C69/60C07C69/84C07C69/675C07C69/76C07C319/12C07C323/52C08K5/103C08K5/11C08L27/06C08K13/02C08K5/098C08K3/34
CPCC07C67/08C07C69/44C07C69/60C07C69/675C07C69/68C07C69/704C07C69/76C07C69/80C07C69/84C07C319/12C07C323/52C08K3/34C08K5/098C08K5/103C08K5/11C08K13/02C08K2201/014C08L27/06
Inventor 潘奇伟屈勇
Owner 济南金昌树新材料科技有限公司
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