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polycarbonate copolymer

A technology of polycarbonate and copolymer, which is applied in the field of polycarbonate resin, can solve the problems of poor amine resistance and achieve excellent heat resistance, remarkable effect and excellent impact resistance

Active Publication Date: 2021-08-03
TEIJIN LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this polycarbonate resin has excellent surface hardness and heat resistance, it is a resin composition with a polycarbonate resin having bisphenol A as a constituent unit, and has poor amine resistance.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0196] Charge 4555 parts of 48% aqueous sodium hydroxide solution and 23088 parts of ion-exchanged water into a reactor equipped with a thermometer, a stirrer and a reflux cooler, and dissolve 6,6'-dihydroxy-3,3,3',3 '-Tetramethyl-1,1'-spirobiindane (hereinafter referred to as SBI) 741 parts, bisphenol C (manufactured by Honshu Chemical, hereinafter referred to as BPC) 1644 parts, bisphenol A (manufactured by Nippon Steel Chemical Co., Ltd., Hereinafter, 1645 parts of BPA and 8.06 parts of bisulfite (manufactured by Wako Pure Chemical Industries, Ltd.) were added, and 20443 parts of dichloromethane were added, and 2000 parts of phosgene were blown in at 15 to 25° C. for about 90 minutes while stirring. After the blowing of phosgene is completed, add 661 parts of 48% sodium hydroxide aqueous solution and 91.4 parts of p-tert-butylphenol, start stirring again, add 4.1 parts of triethylamine after emulsification, and further stir at 28-35°C for 1 hour, and end reaction.

[0197]...

Embodiment 2

[0200] Polycarbonate resin composition particles were obtained in the same manner as in Example 1 except that 2261 parts of BPC, 741 parts of SBI, 1097 parts of BPA, and 84.2 parts of p-tert-butylphenol were used. Table 1 shows the results of evaluation using the pellets.

Embodiment 3

[0202] Polycarbonate resin composition particles were obtained in the same manner as in Example 1 except that 2055 parts of BPC, 494 parts of SBI, 1462 parts of BPA, and 96.2 parts of p-tert-butylphenol were used. Table 1 shows the results of evaluation using the pellets.

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Abstract

An object of the present invention is to provide a polycarbonate resin excellent in scratch resistance, impact resistance, heat resistance, and amine resistance. The present invention provides a polycarbonate copolymer having as its main constituent unit (A) the following formula (1) (in formula (1), R 1 and R 2 Structural units (A) and (B) represented by the following formula (2) (formula (2) each independently a hydrogen atom, a hydrocarbon group having 1 to 9 carbon atoms which may contain an aromatic group, or a halogen atom) medium, R 3 and R 4 Each is independently an alkyl group having 1 to 6 carbon atoms or a halogen atom. X is a single bond, a substituted or unsubstituted alkylene group, a substituted or unsubstituted alkanediyl group, a sulfur atom, or an oxygen atom) and the structural units (B) and (C) represented by the following formula (3) (formula In (3), W represents a single bond, a substituted or unsubstituted alkylene group, a substituted or unsubstituted alkanediyl group, a sulfur atom, or an oxygen atom. The ratio of the structural unit (A) is 5 to 25 mol %, the ratio of the structural unit (B) is 35 to 60 mol %, and the ratio of the structural unit (C) is 30 to 50 mol %.

Description

technical field [0001] The present invention relates to polycarbonate resins (polycarbonate copolymers) capable of inhibiting polymer decomposition under conditions of exposure to an alkaline environment containing amines. In addition, the present invention relates to a polycarbonate resin molded article (sheet, film, etc.) excellent in amine resistance that is suitable for production of automotive interior parts. Furthermore, the present invention relates to an automotive interior part comprising a polycarbonate resin having a specific structural unit and excellent in scratch resistance, impact resistance, heat resistance, and amine resistance. Background technique [0002] Polyurethane foam is made from polyol and polyisocyanate as the main raw materials, and is made by mixing foaming agent, foam stabilizer, catalyst, coloring agent, etc., and foaming while resinizing. Especially in the automotive field, polyurethane foam is widely used in sound-absorbing and vibration-ab...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G64/04C08K5/13C08K5/49C08L69/00
CPCC08G64/04C08G64/24C08K5/005C08K5/527C08K5/1345C08K5/3475C08K5/101C08L69/00C08G64/06C08J5/18C08J2369/00C08K5/13
Inventor 常守秀幸山中克浩
Owner TEIJIN LTD
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