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Low temperature resistant non-transparent high-impact random copolymerization polycarbonate, preparation method and application thereof

A technology of polycarbonate and random copolymerization, which is applied in the field of preparing the low-temperature-resistant non-transparent high-impact random copolymer polycarbonate and low-temperature-resistant non-transparent high-impact random copolymer polycarbonate, which can solve the problem of polysiloxane The comprehensive performance of the copolymer cannot meet the requirements, the product cannot meet the practical application, and the reaction control requirements are strict, etc., to achieve the effect of promoting large-scale application, excellent comprehensive performance, and excellent comprehensive performance

Inactive Publication Date: 2017-07-07
广东新通彩材料科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, most of the current methods for preparing polycarbonate-polysiloxane copolymers are relatively complicated. Usually, polycarbonate oligomers are prepared first, and then polymerized with polysiloxane, which requires stricter reaction control. The process takes a long time
In addition, the overall properties of polycarbonate-polysiloxane copolymers prepared by some methods cannot meet the requirements, especially the low-temperature impact strength, so that the products cannot meet the practical application requirements.

Method used

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  • Low temperature resistant non-transparent high-impact random copolymerization polycarbonate, preparation method and application thereof
  • Low temperature resistant non-transparent high-impact random copolymerization polycarbonate, preparation method and application thereof
  • Low temperature resistant non-transparent high-impact random copolymerization polycarbonate, preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation Embodiment 1

[0049] Add 228.3kg of bisphenol A, 120kg of sodium hydroxide, and 2000kg of water to the mixer. After the bisphenol A is completely dissolved, add 324g of the catalyst tetrabutylammonium bromide to form a sodium phenolate brine phase; in another mixer Add 128.9kg of liquid phosgene and 4830L of dichloromethane, mix uniformly to form an oil phase; then put the sodium phenolate brine phase into the polymerization reactor, and then mix the oil phase and 26.4kg prepared in the preliminary example at a stirring rate of 550rpm The eugenol-terminated polysiloxane was added to the polymerization reactor at a rate of 100g / min and 150g / min, while a 10% by weight aqueous solution of sodium hydroxide was added dropwise to the reaction system to keep the pH of the reaction system at 11.4, and the temperature of the reaction system is maintained at 35°C; after 2 hours of reaction, the reaction system is separated and purified and the organic solvent is removed to obtain the random copolymer p...

preparation Embodiment 2

[0051] Add 228.3kg of bisphenol A, 145kg of sodium hydroxide, and 2300kg of water to the mixer. After the bisphenol A is completely dissolved, add 367g of the catalyst tetrabutylammonium bromide to form a sodium phenolate brine phase; in another mixer Add 130.5kg of liquid phosgene and 5417L of dichloromethane, mix uniformly to form an oil phase; then put the sodium phenolate brine phase into the polymerization reactor, and then mix the oil phase and 38.6kg prepared in the preliminary example at a stirring rate of 675 rpm The eugenol-terminated polysiloxane was added to the polymerization reactor at a rate of 120g / min and 170g / min, respectively, while a 10% by weight aqueous sodium hydroxide solution was added dropwise to the reaction system to maintain the pH of the reaction system 11.6, and the temperature of the reaction system is maintained at 40°C; after 2.5 hours of reaction, the reaction system is separated and purified and the organic solvent is removed to obtain the ran...

preparation Embodiment 3

[0053] Add 228.3kg of bisphenol A, 169kg of sodium hydroxide, and 2400kg of water to the mixer. After the bisphenol A is completely dissolved, add 415g of the catalyst tetrabutylammonium bromide to form a sodium phenolate brine phase; in another mixer Add 134.6kg of liquid phosgene and 5587L of dichloromethane, mix uniformly to form an oil phase; then put the sodium phenolate brine phase into the polymerization reactor, and then mix the oil phase and 40.8kg prepared in the preliminary example at a stirring rate of 795rpm The eugenol-terminated polysiloxane was added to the polymerization reactor at a rate of 150g / min and 180g / min, and at the same time an aqueous solution of sodium hydroxide with a concentration of 10% by weight was added dropwise to the reaction system to keep the pH of the reaction system at 11.7, and the temperature of the reaction system is maintained at 42°C; after 2.5 hours of reaction, the reaction system is separated and purified and the organic solvent i...

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Abstract

The invention discloses low temperature resistant non-transparent high-impact random copolymerization polycarbonate, a preparation method and an application thereof. The random copolymerization polycarbonate is composed of a polycarbonate embedded section and a polysiloxane embedded section. The random copolymerization polycarbonate disclosed by the invention has excellent comprehensive property, excellent low temperature resistance and mechanical property, especially, high shock strength, better low-temperature shock strength, excellent processing property and practical application value.

Description

Technical field [0001] The invention belongs to the technical field of polymer materials, and specifically relates to a low-temperature-resistant non-transparent high-impact random copolymer polycarbonate, and also relates to a method for preparing the low-temperature-resistant non-transparent high-impact random copolymer polycarbonate and the method. The use of low-temperature resistant non-transparent high-impact random copolymer polycarbonate is described. Background technique [0002] Polycarbonate (PC) is a general term for high molecular polymers containing carbonate groups in the molecular chain and various materials prepared with them as a matrix. According to the structure of the ester group, it can be divided into aliphatic, alicyclic, aromatic, aliphatic-aromatic and other types. Among them, aliphatic polycarbonate has low melting point, high solubility, poor thermal stability, and mechanical strength. Shortcomings such as not high, so that it cannot be used as engine...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G64/18C08G64/24C08G64/40C08L69/00C08L25/06C08L23/00C08L77/00
CPCC08G64/186C08G64/24C08G64/406C08L23/00C08L25/06C08L69/00C08L77/00C08L2201/02C08L2205/025
Inventor 葛建芳郑文亮温炳章
Owner 广东新通彩材料科技有限公司
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