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PVC heat stabilizer of metal carboxylate of pentaerythritol ester and preparation method thereof

A technology of metal carboxylate and pentaerythritol ester, which is applied in the preparation of dipentaerythritol esterification, carboxylate and pentaerythritol, can solve the problem of complex components, and achieve simple post-treatment, small residue and easy processing Effect

Active Publication Date: 2010-07-07
BELIKE CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the problems that existing zinc / calcium soap composite heat stabilizers have complex components and that polyol esters are used as auxiliary heat stabilizers, the present invention utilizes dibasic carboxylic acids to neutralize metal oxides or hydroxides to form salts and combine with pentaerythritol , the esterification reaction of the mixture of dipentaerythritol to obtain a PVC heat stabilizer with a new structure

Method used

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  • PVC heat stabilizer of metal carboxylate of pentaerythritol ester and preparation method thereof
  • PVC heat stabilizer of metal carboxylate of pentaerythritol ester and preparation method thereof
  • PVC heat stabilizer of metal carboxylate of pentaerythritol ester and preparation method thereof

Examples

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Effect test

Embodiment 1

[0026] Melt 66g of glutaric acid at 100-110°C, add 18g of calcium oxide, stir for 0.5 hours, mix well, add 5.7g of 30% hydrogen peroxide, and keep warm at 100-110°C for 1 hour. Add 109g of pentaerythritol and 51g of dipentaerythritol, stir evenly and heat up to 185±5°C to melt, then add 0.16g of p-toluenesulfonic acid and 8g of xylene and react at 185±5°C for 1 to 2 hours, then cool, crush and grind to obtain pentaerythritol Ester calcium salt PVC heat stabilizer (referred to as calcium salt I).

Embodiment 2

[0028] Melt 97.4g of adipic acid at 160-170°C, add 28g of zinc oxide, stir for 0.5 hour, mix well, add 12.6g of 30% hydrogen peroxide, and keep warm at 160-170°C for 2 hours. Add 77g of pentaerythritol and 71g of dipentaerythritol, stir evenly and heat up to 190±5°C to melt, add 0.29g of p-toluenesulfonic acid and 22g of xylene and react at 190±5°C for 1 to 2 hours, then cool, crush and grind to obtain pentaerythritol ester Zinc salt PVC heat stabilizer (referred to as zinc salt II).

Embodiment 3

[0030] Melt 133g of pimelic acid at 110-120°C, add 13.4g of magnesium oxide, stir for 0.5 hours, mix well, add 24g of 30% hydrogen peroxide, and keep warm at 110-120°C for 1.5 hours. Add 128g of pentaerythritol and 79g of dipentaerythritol, stir evenly, heat up to 190±5°C to melt, add 1.0g of phosphotungstic acid and 51.7g of xylene and react at 190±5°C for 1 to 2 hours, then cool, crush and grind to obtain pentaerythritol ester Magnesium salt PVC heat stabilizer (referred to as magnesium salt III).

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Abstract

The invention discloses a PVC heat stabilizer of metal carboxylate of pentaerythritol ester and a preparation method thereof. The heat stabilizer has the following structure: M is Ca2+, Mg2+ or Zn2+, n is equal to 3-8, and R1 and R2 are -CH2C(CH2OH)2CH2OCH2C(CH2OH)3 or -CH2C(CH2OH)3; the heat stabilizer is formed as follows: salt forming reaction is carried out on one carboxylic acid group of dicarboxylic acid and oxides or hydroxides of zinc, calcium and magnesium, and esterification reaction is carried out on the other carboxylic acid group of the dicarboxylic acid and pentaerythritol or dipentaerythritol. The heat stabilizer is solid which can be melted, is white powder after being grinded, and has excellent heat stabilization for PVC.

Description

technical field [0001] The invention relates to a metal carboxylate thermal stabilizer of pentaerythritol ester used in polyvinyl chloride (PVC) processing and a preparation method thereof, in particular to carboxylates of zinc, calcium and magnesium and their esterification with pentaerythritol and dipentaerythritol method of preparation. Background technique [0002] PVC has poor thermal stability, and heat stabilizers need to be introduced during processing. Zinc / calcium soap has the effect of inhibiting the degradation of PVC, but the zinc chloride produced has a strong catalytic effect, resulting in serious discoloration of PVC materials in the later stage, and rapid blackening, that is, the phenomenon of "zinc burning". By adding polyols and their esters, β -Composite thermal stabilizers formed by diketones can effectively inhibit the phenomenon of "zinc burning", and the initial and long-term thermal stability effects are better. The effect of zinc / calcium soap comp...

Claims

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Application Information

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IPC IPC(8): C08K5/11C08L27/06C07C67/08C07C69/42C07C69/44C07C69/46C07C69/48C07C69/50C07C69/34
Inventor 郭向荣张惠明王海许志华刘述梅赵建青
Owner BELIKE CHEM
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