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Heat stabilizer composition for transparent PVC (polyvinyl chloride) and application of heat stabilizer composition

A heat stabilizer and auxiliary heat stabilizer technology, applied in the production of bulk chemicals, etc., can solve problems such as odor, poisonous organotin, poor static thermal stability and dynamic thermal stability, etc.

Pending Publication Date: 2021-05-11
XUZHOU COLLEGE OF INDAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Calcium-zinc and barium-zinc are used as heat stabilizers for PVC, and static thermal stability and dynamic thermal stability are not good.
When organic tins are used as heat stabilizers for PVC, the resulting PVC material also has good transparency, but some organic tins are poisonous and some have peculiar smell, so care should be taken when using them

Method used

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  • Heat stabilizer composition for transparent PVC (polyvinyl chloride) and application of heat stabilizer composition
  • Heat stabilizer composition for transparent PVC (polyvinyl chloride) and application of heat stabilizer composition
  • Heat stabilizer composition for transparent PVC (polyvinyl chloride) and application of heat stabilizer composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Add 191.4 mL of CH to the flask 3 COCH 2 COOC 2 h 5 and a small amount of potassium hydroxide, in N 2 Stir and heat under the condition of gas protection. Add 223.2 mL of CH to the dropping funnel 3 (CH 2 ) 11 OH; when the temperature of the liquid in the flask reaches 175°C, CH 3 (CH 2 ) 11OH was dropped into the reaction flask, and the dropping speed was controlled to be 0.5 drops / s; after the addition of all the liquids, the reaction was continued at 175°C for 4 hours; Until there is a distillate, the product of the first step is obtained.

[0037] Prepare a new flask, add 324g of the product of the first step, and add a small amount of acetic acid until the liquid is weakly acidic; then add 77g of dried ammonium acetate and 7.29g of dried cetyltrimethylammonium bromide. 2 Stir, heat, and reflux under the condition of gas protection; dissolve 42.05g of urotropine in a small amount of distilled water and place it in the dropping funnel; Add the aqueous sol...

Embodiment 2

[0042] Add 191.4 mL of CH to the flask 3 COCH 2 COOC 2 h 5 and a small amount of potassium hydroxide, in N 2 Stir and heat under protected conditions. When the temperature of the liquid in the flask reached 190°C, 354.6g of CH 3 (CH 2 ) 23 OH was divided into 20 equal parts according to the principle of a small amount of multiple times, and added to the reaction flask in 20 times, adding one equal part every 10 minutes; 3 (CH 2 ) 23 After adding all the OH, continue the reaction at 190°C for 10 hours. After the reaction, lower the temperature to 80°C, and distill under reduced pressure until there is no more distillate, and the product of the first step is obtained.

[0043] Prepare a new flask, add 525.6g of the product from the first step, and add a small amount of acetic acid until the liquid appears weakly acidic. Then add 77g of dried ammonium acetate and 7.29g of dried cetyltrimethylammonium bromide, in N 2 Stirring, heating, and reflux under protected conditi...

Embodiment 3

[0047] Add 204.1 mL of CH to the flask 3 COCH 2 COOC 2 h 5 and a small amount of potassium hydroxide, in N 2 Stirring, heating, and reflux under protected conditions. When the temperature of the liquid in the flask reached 190°C, 354.6g of CH 3 (CH 2 ) 23 According to the principle of a small amount of multiple times, OH is divided into 20 parts, and added to the reaction flask in 20 times, one part is added every 10 minutes, and the CH 3 (CH 2 ) 23 After all the OH was added, the reaction was continued at 190°C for 10 hours. After the reaction was over, the temperature was lowered to 80°C, and distillation was performed under reduced pressure until there was no more distillate. , that is, the product of the first step is obtained.

[0048] Prepare a new flask, add 591.3g of the product from the first step, and add a small amount of acetic acid until the liquid becomes weakly acidic. Then add 79.06g of dried ammonium bicarbonate and 7.29g of dried cetyltrimethylammo...

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Abstract

The invention discloses a heat stabilizer composition for transparent PVC (polyvinyl chloride) and application thereof. The heat stabilizer composition at least contains a dihydropyridine derivative as a main heat stabilizer; and the heat stabilizer composition further comprises an amine anti-aging agent serving as an auxiliary heat stabilizer A, a phenolic antioxidant serving as an auxiliary heat stabilizer B and a phosphite antioxidant serving as an auxiliary heat stabilizer C. The prepared PVC has excellent static thermal stability and dynamic thermal stability, and the used materials meet the environmental protection requirement and have no peculiar smell.

Description

technical field [0001] The invention belongs to the technical field of plastic additives and its processing, and in particular relates to a heat stabilizer composition for transparent PVC and its application. Background technique [0002] Polyvinyl chloride (PVC) is a plastic variety second only to polyethylene in annual output, and its application is very extensive. Among them, transparent PVC products can be widely used in food packaging, medical supplies and other fields. During the processing of PVC, heat stabilizers and plasticizers need to be added to slow down its thermal decomposition during processing and reduce the release of harmful substances HCl. There are many types of heat stabilizers, and organotin heat stabilizers, calcium zinc, barium zinc and other heat stabilizers are mainly used in transparent materials. Chinese patent CN 107057220B introduces a liquid barium / zinc transparent composite heat stabilizer for PVC, which mainly uses barium isooctanoate and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K5/3432C08K5/18C08K5/134C08K5/527C08K5/13C08K5/00C08L27/06C08L91/00C08L23/06C08L91/06
CPCC08K5/3432C08K5/18C08K5/134C08K5/527C08K5/13C08K5/00C08L27/06C08L2201/08C08L2205/035C08L2201/10Y02P20/52
Inventor 臧亚南徐云慧巩志行张锁
Owner XUZHOU COLLEGE OF INDAL TECH
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