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A kind of auxiliary heat stabilizer for polyvinyl chloride and preparation method thereof

A technology of auxiliary heat stabilizer and polyvinyl chloride, applied in the field of plastic processing, can solve the problems of affecting high temperature resistance performance and transparency, complex reaction process and high production cost, and achieve good anti-coloring inhibitor, simple reaction process and high production cost. low effect

Active Publication Date: 2017-12-19
GUANGZHOU CARDLO BIOCHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Chinese patent CN 104513491A discloses a composition used as an anti-shrinkage agent in plastic processing, which consists of 83-88 parts of glyceryl monostearate, 15-20 parts of pentaerythritol ester, and a coupling agent or / and a chelating agent. Wherein the pentaerythritol ester is monopentaerythritol ester, dipentaerythritol ester or any combination thereof; the composition contains a coupling agent or / and a chelating agent, and uses high-purity glyceryl monostearate, which makes the production cost high and simultaneously reacts The process is complicated and there are many impurities in the product, which seriously affects its high temperature resistance and transparency

Method used

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  • A kind of auxiliary heat stabilizer for polyvinyl chloride and preparation method thereof

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Embodiment 1

[0020] Embodiment 1, the present invention is used for the auxiliary thermal stabilizer of polyvinyl chloride and preparation thereof

[0021] Recipe: 20% of glyceryl monostearate, 10% of pentaerythritol stearate, and 1% of polypropylene glycol diglycidyl ether with a purity of 90%. The weight ratio of pentaerythritol monostearate and pentaerythritol distearate in described pentaerythritol stearate is 3 ∶ 1.

[0022] Preparation method: Take glyceryl monostearate, pentaerythritol stearate and polypropylene glycol diglycidyl ether, mix them, use triethylamine to adjust the pH value of the system to 9, heat to 80°C under stirring, react for 1 hour, and the reaction ends. Send it to the powder spraying tower for powder spraying, granulation by the granulator, and tableting by the tablet press to obtain an auxiliary heat stabilizer for polyvinyl chloride.

Embodiment 2

[0023] Embodiment 2, the present invention is used for the auxiliary thermal stabilizer of polyvinyl chloride and preparation thereof

[0024] Formula: 40 grams of glyceryl monostearate with a purity of 95%, 10 grams of pentaerythritol stearate, and 3 grams of polypropylene glycol diglycidyl ether. The weight ratio of pentaerythritol monostearate and pentaerythritol distearate in described pentaerythritol stearate is 4 ∶ 1.

[0025] Preparation method: Take glyceryl monostearate, pentaerythritol stearate and polypropylene glycol diglycidyl ether, mix them, use triethylamine to adjust the pH value of the system to 10, heat to 90°C under stirring, react for 2 hours, and the reaction is completed. Send it to the powder spraying tower for powder spraying, granulation by the granulator, and tableting by the tablet press to obtain an auxiliary heat stabilizer for polyvinyl chloride.

Embodiment 3

[0026] Embodiment 3, the present invention is used for the auxiliary thermal stabilizer of polyvinyl chloride and preparation thereof

[0027] Recipe: 30 grams of glyceryl monostearate with a purity of 93%, 10 grams of pentaerythritol stearate, and 2 grams of polypropylene glycol diglycidyl ether. The weight ratio of pentaerythritol monostearate and pentaerythritol distearate in described pentaerythritol stearate is 3 ∶ 1.

[0028] Preparation method: Take glyceryl monostearate, pentaerythritol stearate and polypropylene glycol diglycidyl ether, mix them, use triethylamine to adjust the pH value of the system to 9, heat to 90°C under stirring, react for 1 hour, and the reaction is completed. Send it to the powder spraying tower for powder spraying, granulation by the granulator, and tableting by the tablet press to obtain an auxiliary heat stabilizer for polyvinyl chloride.

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Abstract

The invention belongs to the technical field of plastic processing, and particularly relates to an auxiliary heat stabilizer for polyvinyl chloride and a preparation method thereof. The auxiliary heat stabilizer provided by the invention is prepared from glycerin monostearate, pentaerythritol stearate and polypropylene glycol diglycidyl ether, and has a strong synergistic effect with metal soaps and organic tin; the heat stability of a PVC (Polyvinyl Chloride) material is effectively improved without influencing the transparency of the PVC material; meanwhile, the preparation method of the auxiliary heat stabilizer is simple, low in energy consumption and low in production cost.

Description

technical field [0001] The invention belongs to the technical field of plastic processing, and in particular relates to an auxiliary heat stabilizer for polyvinyl chloride and a preparation method thereof. Background technique [0002] Polyvinyl chloride (PVC) is one of the five general-purpose plastics. It has excellent corrosion resistance and high mechanical properties, and is cheap, rich in resources, and mature in manufacturing technology. Therefore, its products are widely used in various fields of industrial and agricultural production. field. However, due to the double bond, branched chain structure and initiator residues in the PVC structure, it will be degraded with dehydrochlorination reaction at the processing temperature, and discoloration and macromolecular crosslinking will also occur. Therefore, the processing of PVC must use heat stabilizers. For a long time, the heat stabilizers used for PVC mainly include lead salts, composite metal soaps and organotins....

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L27/06C08L71/08C08K5/103
CPCC08K5/103C08K2201/014C08L27/06C08L71/08C08L2201/08
Inventor 徐怀义闵菊平刘惠敏蔡名柳邵磊
Owner GUANGZHOU CARDLO BIOCHEM TECH