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Thermoplastic resin composition and molded article

A technology of thermoplastic resin and composition, which is applied in the direction of antenna, antenna parts, electrical components, etc., can solve the problems of inability to obtain surface hardness, alkali resistance and impact resistance polycarbonate resin composition, etc., and achieve excellent mechanical strength, Excellent impact resistance and excellent alkali resistance

Pending Publication Date: 2022-04-08
MITSUBISHI CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0023] However, a polycarbonate resin composition excellent in both surface hardness and alkali resistance, heat resistance and impact resistance cannot be obtained by conventional methods.

Method used

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  • Thermoplastic resin composition and molded article
  • Thermoplastic resin composition and molded article
  • Thermoplastic resin composition and molded article

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0530] Add 4,4-methylenebis(2,6-dimethylphenol) (TmBPF) ( Tokyo Chemical Industry Co., Ltd.) 23.34 g (about 0.091 mol), 2,2-bis(4-hydroxy-3-methylphenyl) propane (BPC) (Honshu Chemical Co., Ltd.) 93.37 g (about 0.364 mol), carbonic acid 99.97 g (about 0.467 mol) of diphenyl ester (DPC) and a 0.4% by mass aqueous solution of cesium carbonate as a catalyst were prepared so that the cesium carbonate contained in 1 mol of all dihydroxy compounds was 3 μmol, and a raw material mixture was prepared.

[0531] Next, the inside of the glass reactor was decompressed to about 50 Pa (0.38 Torr), followed by repressurization to atmospheric pressure with nitrogen, and this operation was repeated three times, and the inside of the reactor was replaced with nitrogen. After nitrogen substitution, the external temperature of the reactor was set at 220° C., and the internal temperature of the reactor was gradually raised to dissolve the mixture. Thereafter the stirrer was rotated at 100 rpm. The...

Embodiment 2

[0536] 46.69 g (about 0.182 mol) of TmBPF (manufactured by Tokyo Chemical Industry Co., Ltd.), 70.02 g (about 0.273 mol) of BPC (manufactured by Honshu Chemical Co., Ltd.), 99.97 g (about 0.467 mol) of DPC, and 0.4% by mass of cesium carbonate as a catalyst The aqueous solution was added so that cesium carbonate was 5 μmol per 1 mol of all the dihydroxy compounds to prepare a raw material mixture, and it was carried out by the method described in Example 1 except that.

[0537] For the polycarbonate resin obtained in this way, each evaluation was implemented by the above-mentioned procedure. The results are shown in Table 1 and Table 3.

Embodiment 3

[0539] 93.37 g (about 0.364 mol) of TmBPF (manufactured by Tokyo Chemical Industry Co., Ltd.), 23.34 g (about 0.091 mol) of BPC (manufactured by Honshu Chemical Co., Ltd.), 99.97 g (about 0.467 mol) of DPC, and 0.4% by mass of cesium carbonate as a catalyst The aqueous solution was added so that cesium carbonate was 8 μmol per 1 mol of all the dihydroxy compounds to prepare a raw material mixture, and it was carried out by the method described in Example 1 except that.

[0540] For the polycarbonate resin obtained in this way, each evaluation was implemented by the above-mentioned procedure. The results are shown in Table 1 and Table 3.

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Abstract

A molded article obtained using a thermoplastic resin composition containing a polycarbonate resin having a repeating unit (A) represented by general formula (1) and a repeating unit (B) represented by general formula (2). R1 and R2 represent a hydrogen atom, a substituted / unsubstituted alkyl group having 1-20 carbon atoms, or a substituted / unsubstituted aryl group. The alkyl groups of R1 and R2 may be bonded to each other to form a ring. And R3 and R4 are substituted / unsubstituted alkyl groups with 1-20 carbon atoms or substituted / unsubstituted aryl groups. And X represents a single bond or a group represented by general formula (3). And R6-R9 are substituted / unsubstituted alkyl groups having 1-20 carbon atoms, or substituted / unsubstituted aryl groups. And R5 represents a hydrogen atom, a substituted / unsubstituted alkyl group having 1-20 carbon atoms, or a substituted / unsubstituted aryl group.

Description

technical field [0001] The present invention relates to a thermoplastic resin composition having excellent radio wave permeability in the microwave and / or millimeter wave band, and excellent heat resistance and flame retardancy, a molded article thereof, and a communication device incorporating a microwave and / or millimeter wave antenna Housing for equipment. The present invention also relates to a communication device using the case for a communication device. Background technique [0002] Polycarbonate resins are excellent in mechanical strength, electrical properties, transparency, etc., and are widely used as engineering plastics in various fields such as electrical and electronic equipment fields and automobile fields. [0003] Patent Document 1 proposes a millimeter-wave radar cover that uses a polycarbonate resin made of bisphenol having a specific substituent as a raw material to reduce the dielectric loss tangent and improve millimeter-wave transmittance at 75 GHz ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G64/30C08L69/00
CPCC08G64/06C08J5/18C08G64/307H01Q1/42C08L69/00
Inventor 富田将平横木正志柴田浩喜山下真矢
Owner MITSUBISHI CHEM CORP
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