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Preparation method of novel ultraviolet resistant copolymerized polycarbonate

A technology of polycarbonate and polycarbonate copolycarbonate, which is applied in the field of preparation of new anti-ultraviolet copolycarbonate, can solve the problems of poor compatibility, affecting the mechanical properties of composite materials, and poor dispersion of anti-ultraviolet agents. Achieve the effects of improving mechanical properties, improving UV resistance, and ensuring consistency and uniformity

Inactive Publication Date: 2020-02-18
PUYANG SHENGTONGJUYUAN ADVANCED MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the anti-ultraviolet agent often added has poor dispersion performance and poor compatibility in polycarbonate, which in turn affects the mechanical properties of composite materials.

Method used

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  • Preparation method of novel ultraviolet resistant copolymerized polycarbonate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] (a) Diphenyl carbonate (DPC) is first placed in a reaction kettle with a nitrogen protection device, heated to melt it, and then add 4,4'-dihydroxybenzophenone anti-ultraviolet agent and bisphenol A ( BPA), DPC, BPA and anti-ultraviolet agent (molar ratio n (DPC): n (BPA): n (anti-ultraviolet agent) = 1.02:0.7:0.3), stir well, add tert-butyl potassium catalyst, catalyst and BPA The molar ratio is 1: (1×10 -4 ), after melting the ingredients, add them together to the reaction kettle equipped with a temperature controller, agitator and nitrogen protection device, adjust the stirring rate to 800r / min, and react for 4h at a temperature of 200°C; (b) adjust the temperature to 250 °C, the stirring rate was adjusted to 600r / min, and the reaction was carried out for 2 hours to obtain an anti-ultraviolet copolymerized polycarbonate.

Embodiment 2

[0033] (a) Diphenyl carbonate (DPC) is first placed in a reaction kettle with a nitrogen protection device, heated to melt it, and then add 4,4'-dihydroxybenzophenone anti-ultraviolet agent and bisphenol A ( BPA), DPC, BPA and anti-ultraviolet agent (molar ratio n (DPC): n (BPA): n (anti-ultraviolet agent) = 1.1: 0.75: 0.35), stir well, add tert-butyl cesium catalyst, catalyst and BPA The molar ratio is 1:(3.5×10 -4 ), after melting the ingredients, add them together to the reaction kettle equipped with a temperature controller, agitator and nitrogen protection device, adjust the stirring rate to 600r / min, and react for 2h at a temperature of 220°C; (b) adjust the temperature to 260 °C, the stirring rate was adjusted to 400r / min, and the reaction was carried out for 0.5h to obtain an anti-ultraviolet copolymerized polycarbonate.

Embodiment 3

[0035] (a) Diphenyl carbonate (DPC) is first placed in a reaction kettle with a nitrogen protection device, heated to melt it, and then add 4,4'-dihydroxybenzophenone anti-ultraviolet agent and bisphenol A ( BPA), DPC, BPA and anti-ultraviolet agent (molar ratio n (DPC): n (BPA): n (anti-ultraviolet agent) = 1.08: 0.72: 0.32), stir well, add tert-butyl sodium catalyst, catalyst and BPA The molar ratio is 1: (3×10 -4 ), after melting the ingredients, add them together to a reaction kettle equipped with a temperature controller, a stirrer and a nitrogen protection device, adjust the stirring rate to 700r / min, and react for 3h at a temperature of 230°C; (b) adjust the temperature to 290 °C, the stirring rate was adjusted to 500r / min, and the reaction was carried out for 1.5h to obtain an anti-ultraviolet copolymerized polycarbonate.

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Abstract

The invention relates to the field of copolycarbonate, in particular to a preparation method of novel ultraviolet resistant copolycarbonate. The specific preparation method comprises the following steps of: (a) adding BPA, DPC and 4,4'-dihydroxybenzophenone with a certain molar ratio into a reaction kettle equipped with a temperature controller, a stirrer and a nitrogen protection device, and reacting for a period of time at a certain temperature; and (b) after the temperature is increased, continuing the reaction for a certain time to obtain the novel ultraviolet resistant copolycarbonate. The novel ultraviolet resistant copolycarbonate prepared by the invention has excellent anti-ultraviolet performance and excellent rigidity and transparency, and is an excellent molding processability engineering plastic.

Description

technical field [0001] The invention relates to the field of copolymerized polymers, in particular to a preparation method of a novel anti-ultraviolet copolymerized polycarbonate. Background technique [0002] Polycarbonate is a linear carbonated polyester, the carbonic acid groups in the molecule are alternately arranged with other groups, and these groups can be aromatic, aliphatic, or both. Bisphenol A polycarbonate is the most important industrial product. It is an almost colorless glassy amorphous polymer, which is widely used in glass assembly industry, automobile industry, electronics, electrical industry, medical and health care, construction and other fields. With the wide application of polycarbonate, its application in special fields has also been promoted to a certain extent, but the application in special fields has higher requirements on the performance of polycarbonate. [0003] In order to make polycarbonate resin suitable for special fields and obtain high...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G64/30C08G64/06
CPCC08G64/06C08G64/307
Inventor 殷鹏刚程国强史吉华钟生濮王息辰
Owner PUYANG SHENGTONGJUYUAN ADVANCED MATERIALS CO LTD
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