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Lactic acid polyol esters and preparation method and application thereof in processing halogenated vinyl polymers

A polyol ester and vinyl halide technology, applied in the field of lactic acid polyol ester and its preparation, can solve the problems of poor compatibility of polyvinyl chloride, easy precipitation of pentaerythritol, high melting point, etc., and achieve good compatibility, low price, good The effect of applying the foreground

Active Publication Date: 2017-05-10
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

For example, some people add single and double pentaerythritol to the heat stabilizer to inhibit zinc burning. Although the effect is remarkable, the application is limited due to the easy precipitation and sublimation of pentaerythritol, high melting point, high cost, and poor compatibility with polyvinyl chloride.

Method used

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  • Lactic acid polyol esters and preparation method and application thereof in processing halogenated vinyl polymers
  • Lactic acid polyol esters and preparation method and application thereof in processing halogenated vinyl polymers
  • Lactic acid polyol esters and preparation method and application thereof in processing halogenated vinyl polymers

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Experimental program
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Effect test

Embodiment 1

[0052] Monopentaerythritol and lactic acid were added to the four-necked flask according to the molar ratio of 1:1, and the temperature was controlled to react at 160 ° C until no water steam overflowed, then 0.75% of the lactic acid mass was added as a tetrabutyl titanate catalyst, and the reaction was continued until anhydrous. , and then pumped negative pressure for 30 minutes, poured out and cooled to obtain solid sample 1. The structural formula of sample 1 is shown in formula I, and n=0.

Embodiment 2

[0054]Monopentaerythritol and lactic acid were added to a four-necked flask according to a molar ratio of 1:1.2, and the reaction was performed at 180° C. under temperature control until no steam overflowed, and 0.5% of the mass of lactic acid was added as a tetrabutyl titanate catalyst, and the reaction was continued until anhydrous, The negative pressure was drawn for another 30 minutes, poured out for cooling, and solid sample 2 was obtained. The structural formula of sample 2 is shown in formula I, and n=0.

Embodiment 3

[0056] Monopentaerythritol and lactic acid were added to a four-necked flask according to a molar ratio of 1:1.5, and the temperature was controlled to react at 200 ° C until no water vapor overflowed, and a tetrabutyl titanate catalyst of 1% by mass of lactic acid was added, and the reaction was continued until anhydrous. , and then pumped negative pressure for 30 minutes, poured out and cooled to obtain solid sample 3. The structural formula of sample 3 is shown in formula I, and n=0.

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Abstract

The invention discloses lactic acid polyol esters, a preparation method of the lactic acid polyol esters and application of the lactic acid polyol esters in processing halogenated vinyl polymers. The lactic acid polyol esters are prepared by carrying out esterification on polyols or a mixture of polyols and lactic acid in the presence of a catalyst. The product of the invention is good in compatibility with the halogenated vinyl polymers, especially PVC and not easy to precipitate, and has a very good function of assisting to improve the processing thermal stability of the halogenated vinyl polymers (especially PVC), and further can inhibit or reduce the 'zinc burning phenomenon' of a zinc containing heat stabilizer, and has very good application prospects in the processing field of the halogenated vinyl polymers, especially PVC.

Description

technical field [0001] The invention relates to a lactic acid polyol ester and a preparation method and application thereof, in particular to a lactic acid polyol ester, a preparation method thereof and a new application in the processing of halogenated vinyl polymers. Background technique [0002] Since the 1930s, after the breakthrough of practical chemical industry, the use of PVC began to grow rapidly. Due to the structure of polyvinyl chloride: during processing, PVC will degrade at high temperature. By removing unstable chlorine atoms, hydrogen chloride is generated and a double bond is formed. The generated double bond causes the adjacent secondary chlorine to form alkene propyl chloride, making it more labile, and as a result it is also removed as hydrogen chloride, resulting in a sequence with two conjugated double bonds. By analogy, a multi-olefin sequence is generated, and a large amount of hydrogen chloride gas is released. And because the processing of PVC is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C67/08C07C69/68C08L27/06C08K5/103C08K13/02C08K5/098
CPCC07C67/08C07C69/68C08K5/098C08K5/103C08K13/02C08K2201/014C08L2201/08C08L27/06
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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