Polycarbonate resin having amine resistance

Patent metadata

Field	Value
Publication number	US-10494522-B2
Application number	US-201615770898-A
Country	US
Kind code	B2
Filing date	Oct 24, 2016
Priority date	Oct 29, 2015
Publication date	Dec 3, 2019
Grant date	Dec 3, 2019

Abstract

A polycarbonate copolymer or copolymerized polycarbonate blend having excellent amine resistance, which has, as main constituent units, (A) constituent units each represented by the following formula (1):

wherein, in the formula (1), each of R 1 and R 2 is independently a hydrogen atom, a hydrocarbon group having 1 to 9 carbon atoms and optionally containing an aromatic group, or a halogen atom,
(B) constituent units each represented by the following formula (2):

wherein, in the formula (2), each of R 3 and R 4 is independently an alkyl group having 1 to 6 carbon atoms or a halogen atom, and X is a single bond, a substituted or unsubstituted alkylene group, a substituted or unsubstituted alkylidene group, a sulfur atom, or an oxygen atom, and
(C) constituent units each represented by the following formula (3):

wherein, in the formula (3), W represents a single bond, a substituted or unsubstituted alkylene group, a substituted or unsubstituted alkylidene group, a sulfur atom, or an oxygen atom,
wherein the amount of the constituent units (A) is 5 to 15 mol %, the amount of the constituent units (B) is 20 to 60 mol %, and the amount of the constituent units (C) is 25 to 75 mol %, based on the mole of the all constituent units, and the polycarbonate copolymer or copolymerized polycarbonate blend is excellent in scratch resistance, impact resistance, heat resistance, and amine resistance.

First claim

The invention claimed is:

1. A polycarbonate copolymer or copolymerized polycarbonate blend having excellent amine resistance, comprising, as main constituent units, (A) constituent units each represented by the following formula (1):

wherein, in the formula (1), each of R 1 and R 2 is independently a hydrogen atom, a hydrocarbon group having 1 to 9 carbon atoms and optionally containing an aromatic group, or a halogen atom,
(B) constituent units each represented by the following formula (2):

wherein, in the formula (2), each of R 3 and R 4 is independently an alkyl group having 1 to 6 carbon atoms or a halogen atom, and X is a single bond, a substituted or unsubstituted alkylene group, a substituted or unsubstituted alkylidene group, a sulfur atom, or an oxygen atom, and
(C) constituent units each represented by the following formula (3):

wherein, in the formula (3), W represents a single bond, a substituted or unsubstituted alkylene group, a substituted or unsubstituted alkylidene group, a sulfur atom, or an oxygen atom,
wherein the amount of the constituent units (A) is 5 to 15 mol %, the amount of the constituent units (B) is 20 to 60 mol %, and the amount of the constituent units (C) is 25 to 75 mol %, based on the mole of the all constituent units.

2. The polycarbonate copolymer or copolymerized polycarbonate blend having excellent amine resistance according to claim 1 , wherein each of R 1 and R 2 in the formula (1) is independently a hydrogen atom or an alkyl group having 1 to 6 carbon atoms, and, in the formula (2), each of R 3 and R 4 is independently an alkyl group having 1 to 6 carbon atoms, and X is a single bond, a substituted or unsubstituted alkylene group having 1 to 10 carbon atoms, or a substituted or unsubstituted alkylidene group having 1 to 10 carbon atoms, and W in the formula (3) is a single bond, a substituted or unsubstituted alkylene group having 1 to 10 carbon atoms, or a substituted or unsubstituted alkylidene group having 1 to 10 carbon atoms.

3. The polycarbonate copolymer or copolymerized polycarbonate blend according to claim 1 , which has a glass transition temperature of 140 to 160° C.

4. The polycarbonate copolymer or copolymerized polycarbonate blend according to claim 1 , which has a Rockwell hardness of 95 to 120, as measured by means of a Rockwell hardness tester (M scale) in accordance with JIS K7202-2.

5. The polycarbonate copolymer or copolymerized polycarbonate blend according to claim 1 , which has a striking energy of 25 J or more, as measured by a high-velocity surface impact test in accordance with JIS K7211-2, wherein the fracture type is a ductile fracture.

6. The polycarbonate copolymer or copolymerized polycarbonate blend according to claim 1 , which has a viscosity average molecular weight of 15,000 to 40,000.

7. The polycarbonate copolymer or copolymerized polycarbonate blend according to claim 1 , wherein the constituent units (A) are constituent units derived from 9,9-bis(4-hydroxy-3-methylphenyl)fluorene.

8. The polycarbonate copolymer or copolymerized polycarbonate blend according to claim 1 , wherein the constituent units (B) are constituent units derived from 2,2-bis(4-hydroxy-3-methylphenyl)propane.

9. The polycarbonate copolymer or copolymerized polycarbonate blend according to claim 1 , wherein the constituent units (C) are constituent units derived from 2,2-bis(4-hydroxyphenyl)propane.

10. A molded article which is obtained by subjecting the polycarbonate copolymer or copolymerized polycarbonate blend according to claim 1 to injection molding.

11. A sheet or film which is obtained by subjecting the polycarbonate copolymer or copolymerized polycarbonate blend according to claim 1 to extrusion.

12. An interior automotive trim part using the molded article of claim 10 .

Assignees

• Teijin Ltd

Inventors

• Tsunemori Hideyuki
• Yamanaka Katsuhiro

Classifications

• C08G64/081

  containing sulfur · CPC title

• C08G64/06

  not containing aliphatic unsaturation · CPC title

• C08G64/04

  Aromatic polycarbonates · CPC title

• C08L69/00 Primary

  Compositions of polycarbonates; Compositions of derivatives of polycarbonates · CPC title