Polycarbonate resin composition, molded article, polycarbonate resin, and end-capping agent for polycarbonate resin

Patent metadata

Field	Value
Publication number	US-11370883-B2
Application number	US-201816615685-A
Country	US
Kind code	B2
Filing date	Apr 16, 2018
Priority date	May 25, 2017
Publication date	Jun 28, 2022
Grant date	Jun 28, 2022

Abstract

A polycarbonate resin composition, a molded article, a polycarbonate resin, and an end-capping agent for polycarbonate resins are provided. The polycarbonate resin composition contains: a polycarbonate resin having a terminal structure represented by Formula (A) and having a viscosity average molecular weight from 1×104 to 5×104, and a stabilizer. In Formula (A), R1 is selected from the group consisting of a hydrogen atom, halogen atoms, linear alkyl groups having from 1 to 9 carbons, branched alkyl groups having from 3 to 9 carbons, linear alkenyl groups having from 2 to 9 carbons, branched alkenyl groups having from 3 to 9 carbons, and aryl groups having from 6 to 12 carbons; and R2 to R7 are each independently selected from the group consisting of a hydrogen atom, alkyl groups having from 1 to 9 carbons, and alkoxy groups having from 1 to 9 carbons.

First claim

The invention claimed is:

1. A polycarbonate resin composition comprising:
a polycarbonate resin having a terminal structure represented by Formula (A) and having a viscosity average molecular weight from 1×10 4 to 5×10 4 , and
a stabilizer;

wherein, R 1 is selected from the group consisting of a hydrogen atom, halogen atoms, linear alkyl groups having from 1 to 9 carbons, branched alkyl groups having from 3 to 9 carbons, linear alkenyl groups having from 2 to 9 carbons, branched alkenyl groups having from 3 to 9 carbons, and aryl groups having from 6 to 12 carbons; and R 2 to R 7 are each independently selected from the group consisting of a hydrogen atom, alkyl groups having from 1 to 9 carbons, and alkoxy groups having from 1 to 9 carbons.

2. The polycarbonate resin composition according to claim 1 , wherein Formula (A) is represented by Formula (B):

wherein, R 2 to R 7 are each independently selected from the group consisting of a hydrogen atom, alkyl groups having from 1 to 9 carbons, and alkoxy groups having from 1 to 9 carbons; and R 8 to R 12 are each independently selected from the group consisting of a hydrogen atom, alkyl groups having from 1 to 9 carbons, and alkoxy groups having from 1 to 9 carbons.

3. The polycarbonate resin composition according to claim 1 , wherein Formula (A) is represented by Formula (C):

wherein, R 2 to R 7 are each independently selected from the group consisting of a hydrogen atom, alkyl groups having from 1 to 9 carbons, and alkoxy groups having from 1 to 9 carbons; and R 8 to R 12 are each independently selected from the group consisting of a hydrogen atom, alkyl groups having from 1 to 9 carbons, and alkoxy groups having from 1 to 9 carbons.

4. The polycarbonate resin composition according to claim 1 , wherein the stabilizer is at least one type selected from the group consisting of thermal stabilizers and antioxidants.

5. The polycarbonate resin composition of claim 1 , wherein the polycarbonate resin has a Tg of 151° C. or higher.

6. A polycarbonate resin having a terminal structure represented by Formula (A) and having a viscosity average molecular weight from 1×10 4 to 5×10 4 ;

wherein, R 1 is selected from the group consisting of a hydrogen atom, halogen atoms, linear alkyl groups having from 1 to 9 carbons, branched alkyl groups having from 3 to 9 carbons, linear alkenyl groups having from 2 to 9 carbons, branched alkenyl groups having from 3 to 9 carbons, and aryl groups having from 6 to 12 carbons; and R 2 to R 7 are each independently selected from the group consisting of a hydrogen atom, alkyl groups having from 1 to 9 carbons, and alkoxy groups having from 1 to 9 carbons.

7. A molded article formed from the polycarbonate resin composition described in claim 1 .

8. The polycarbonate resin of claim 6 having a Tg of 151° C. or higher.

9. The polycarbonate resin according to claim 6 , wherein Formula (A) is represented by Formula (B):

wherein, R 2 to R 7 are each independently selected from the group consisting of a hydrogen atom, alkyl groups having from 1 to 9 carbons, and alkoxy groups having from 1 to 9 carbons; and R 8 to R 12 are each independently selected from the group consisting of a hydrogen atom, alkyl groups having from 1 to 9 carbons, and alkoxy groups having from 1 to 9 carbons.

10. The polycarbonate resin according to claim 6 , wherein Formula (A) is represented by Formula (C):

wherein, R 2 to R 7 are each independently selected from the group consisting of a hydrogen atom, alkyl groups having from 1 to 9 carbons, and alkoxy groups having from 1 to 9 carbons; and R 8 to R 12 are each independently selected from the group consisting of a hydrogen atom, alkyl groups having from 1 to 9 carbons, and alkoxy groups having from 1 to 9 carbons.

Assignees

• Mitsubishi Gas Chemical Co

Inventors

• Shibasaki Yuji
• Maruyama Hiroyoshi
• Nakao Kimitaka
• Nii Yuusuke

Classifications

• C08K5/005

  Stabilisers against oxidation, heat, light, ozone · CPC title

• C08G64/14 Primary

  containing a chain-terminating or -crosslinking agent · CPC title

• C07C2602/10

  the other ring being six-membered, e.g. tetraline · CPC title

• C07C39/225

  with at least one hydroxy group on a condensed ring system · CPC title

• C08G64/40 Primary

  Post-polymerisation treatment · CPC title