Polycarbonate-based resin composition and molded product thereof

Patent metadata

Field	Value
Publication number	US-11072703-B2
Application number	US-201816490029-A
Country	US
Kind code	B2
Filing date	Mar 1, 2018
Priority date	Mar 1, 2017
Publication date	Jul 27, 2021
Grant date	Jul 27, 2021

Abstract

Provided is a polycarbonate-based resin composition, including: 50 mass % or more to 99 mass % or less of a polycarbonate-based resin (S) containing a polycarbonate-polyorganosiloxane copolymer (A) containing a polycarbonate block (A-1) formed of a specific repeating unit and a polyorganosiloxane block (A-2) containing a specific repeating unit, and an aromatic polycarbonate-based resin (B) except the polycarbonate-polyorganosiloxane copolymer (A); and 1 mass % or more to 50 mass % or less of a polyester-based resin (C), wherein the polyorganosiloxane block (A-2) has an average chain length of from 50 or more to 500 or less.

First claim

The invention claimed is:

1. A polycarbonate-based resin composition, comprising:
50 mass % or more to 99 mass % or less of a polycarbonate-based resin (S) containing a polycarbonate-polyorganosiloxane copolymer (A) containing a polycarbonate block (A-1) formed of a repeating unit represented by the following general formula (I) and a polyorganosiloxane block (A-2) containing a repeating unit represented by the following general formula (II), and an aromatic polycarbonate-based resin (B) except the polycarbonate-polyorganosiloxane copolymer (A); and
1 mass % or more to 50 mass % or less of a polyester-based resin (C),
wherein the polyorganosiloxane block (A-2) has an average chain length of from 50 or more to 500 or less:

wherein R 1 and R 2 each independently represent a halogen atom, an alkyl group having 1 to 6 carbon atoms, or an alkoxy group having 1 to 6 carbon atoms, X represents a single bond, an alkylene group having 1 to 8 carbon atoms, an alkylidene group having 2 to 8 carbon atoms, a cycloalkylene group having 5 to 15 carbon atoms, a cycloalkylidene group having 5 to 15 carbon atoms, a fluorenediyl group, an arylalkylene group having 7 to 15 carbon atoms, an arylalkylidene group having 7 to 15 carbon atoms, —S—, —SO—, —SO 2 —, —O—, or —CO—, R 3 and R 4 each independently represent a hydrogen atom, a halogen atom, an alkyl group having 1 to 6 carbon atoms, an alkoxy group having 1 to 6 carbon atoms, or an aryl group having 6 to 12 carbon atoms, and “a” and “b” each independently represent an integer of from 0 to 4.

2. A polycarbonate-based resin composition, comprising:
a polycarbonate-based resin (S) satisfying the following requirements (1) and (2); and
a polyester-based resin (C) to be blended into the polycarbonate-based resin (S),
wherein a ratio of the polycarbonate-based resin (S) to 100 mass % of a total amount of the polycarbonate-based resin (S) and the polyester-based resin (C) is from 50 mass % or more to 99 mass % or less:
(1) the polycarbonate-based resin (S) contains a polycarbonate-polyorganosiloxane copolymer (A) containing a polycarbonate block (A-1) formed of a repeating unit represented by the following general formula (I) and a polyorganosiloxane block (A-2) containing a repeating unit represented by the following general formula (II), and an aromatic polycarbonate-based resin (B) except the polycarbonate-polyorganosiloxane copolymer (A); and
(2) the polycarbonate-based resin (S) has a structure in which a domain (d-1) containing the polyorganosiloxane block (A-2) is present in a matrix containing the aromatic polycarbonate-based resin (B) as a main component, and a domain (d-2) containing at least one selected from a block derived from the aromatic polycarbonate-based resin (B) and the polycarbonate block (A-1) is present inside the domain (d-1):

wherein R 1 and R 2 each independently represent a halogen atom, an alkyl group having 1 to 6 carbon atoms, or an alkoxy group having 1 to 6 carbon atoms, X represents a single bond, an alkylene group having 1 to 8 carbon atoms, an alkylidene group having 2 to 8 carbon atoms, a cycloalkylene group having 5 to 15 carbon atoms, a cycloalkylidene group having 5 to 15 carbon atoms, a fluorenediyl group, an arylalkylene group having 7 to 15 carbon atoms, an arylalkylidene group having 7 to 15 carbon atoms, —S—, —SO—, —SO 2 —, —O—, or —CO—, R 3 and R 4 each independently represent a hydrogen atom, a halogen atom, an alkyl group having 1 to 6 carbon atoms, an alkoxy group having 1 to 6 carbon atoms, or an aryl group having 6 to 12 carbon atoms, and “a” and “b” each independently represent an integer of from 0 to 4.

3. A polycarbonate-based resin composition, comprising:
50 mass % or more to 99 mass % or less of a polycarbonate-based resin (S) containing a polycarbonate-polyorganosiloxane copolymer (A) containing a polycarbonate block (A-1) formed of a repeating unit represented by the following general formula (I) and a polyorganosiloxane block (A-2) containing a repeating unit represented by the following general formula (II), and an aromatic polycarbonate-based resin (B) except the polycarbonate-polyorganosiloxane copolymer (A); and
1 mass % or more to 50 mass % or less of a polyester-based resin (C),
wherein the polycarbonate-based resin composition has a structure in which a domain (d C -1) containing the polyorganosiloxane block (A-2) is present in a matrix containing the aromatic polycarbonate-based resin (B) as a main component, and a domain (d C -2) containing at least one selected from a block derived from the aromatic polycarbonate-based resin (B) and the polycarbonate block (A-1) is present inside the domain (d C -1):

wherein R 1 and R 2 each independently represent a halogen atom, an alkyl group having 1 to 6 carbon atoms, or an alkoxy group having 1 to 6 carbon atoms, X represents a single bond, an alkylene group having 1 to 8 carbon atoms, an alkylidene group having 2 to 8 carbon atoms, a cycloalkylene group having 5 to 15 carbon atoms, a cycloalkylidene group having 5 to 15 carbon atoms, a fluorenediyl group, an arylalkylene group having 7 to 15 carbon atoms, an arylalkylidene group having 7 to 15 carbon atoms, —S—, —SO—, —SO 2 —, —O—, or —CO—, R 3 and R 4 each independently represent a hydrogen atom, a halogen atom, an alkyl group having 1 to 6 carbon atoms, an alkoxy group having 1 to 6 carbon atoms, or an aryl group having 6 to 12 carbon atoms, and “a” and “b” each independently represent an integer of from 0 to 4.

4. The polycarbonate-based resin composition according to claim 1 , wherein a mass ratio “(A)/(B)” of the polycarbonate-polyorganosiloxane copolymer (A) to the aromatic polycarbonate-based resin (B) in the polycarbonate-based resin (S) is from 0.1/99.9 to 99.9/0.1.

5. The polycarbonate-based resin composition according to claim 1 , wherein the aromatic polycarbonate-based resin (B) contains a polycarbonate block including, in a main chain thereof, a repeating unit represented by the following general formula (III):

wherein R 30 and R 31 each independently represent a halogen atom, an alkyl group having 1 to 6 carbon atoms, or an alkoxy group having 1 to 6 carbon atoms, X′ represents a single bond, an alkylene group having 1 to 8 carbon atoms, an alkylidene group having 2 to 8 carbon atoms, a cycloalkylene group having 5 to 15 carbon atoms, a cycloalkylidene group having 5 to 15 carbon atoms, —S—, —SO—, —SO 2 —, —O—, or —CO—, and “d” and “e” each independently represent an integer of from 0 to 4.

6. The polycarbonate-based resin composition according to claim 3 , wherein the domain (d-1) or (d C -1) is mainly formed of the polyorganosiloxane block (A-2).

7. The polycarbonate-based resin composition according to claim 3 , wherein the domain (d-2) or (d C -2) is mainly formed of at least one selected from the block derived from the aromatic polycarbonate-based resin (B) and the polycarbonate block (A-1).

8. The polycarbonate-based resin composition according to claim 3 , wherein only the one domain (d-2) is present inside the domain (d-1), or only the one domain (d C -2) is present inside the domain (d C -1).

9. The polycarbonate-based resin composition according to claim 3 , wherein the two or more domains (d-2) are present inside the domain (d-1), or the two or more domains (d C -2) are pres

Assignees

• Idemitsu Kosan Co

Inventors

• Ishikawa Yasuhiro
• Abe Tomoko
• Koori Yohei

Classifications

• C08G64/186

  containing polysiloxane sequences · CPC title

• C08K5/05

  Alcohols; Metal alcoholates · CPC title

• C08G77/448

  containing polycarbonate sequences · CPC title

• C08G63/183

  Terephthalic acids · CPC title

• C08G77/14

  containing silicon bound to oxygen-containing groups · CPC title