# US 2013/0253162 A1 · Polycarbonate resin and molded article thereof

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- Number: US 2013/0253162 A1
- Document ID: US20130253162A1
- Status: Published application
- Kind: A1
- Application number: 13/824,493
- Filed: 2011-09-29
- Published: 2013-09-26
- Earliest claimed: 2010-10-05
- Assignees: Teijin Limited
- Inventors: Tetsuya Motoyoshi
- Web page: https://patentgrep.com/patent/US20130253162A1

## CPC

- C08G 64/06: not containing aliphatic unsaturation
- C08G 64/1608: {saturated}
- C08J 5/18: Manufacture of films or sheets
- C08J 2369/00: Characterised by the use of polycarbonates; Derivatives of polycarbonates
- C08G: MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08J: WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H (working, e.g. shaping, of plastics B29)

## Abstract

A resin which has high heat resistance, high surface hardness and excellent moldability and is obtained from a biomass resource and a molded article thereof. The above polycarbonate resin comprises a unit (A) represented by the following formula: and a unit (B) represented by the following formula: as the main recurring units, the molar ratio of the unit (A) to the unit (B) being 5/95 to 95/5.

## Claims

### Claim 1

A polycarbonate resin comprising a unit (A) represented by the following formula:
and a unit (B) represented by the following formula:
[In the formula (B), W is a single bond or selected from the following formulas (W):
(Ri and R2 are each independently a hydrogen atom, fluorine atom, chlorine atom, bromine atom, iodine atom, alkyl group having 1 to 9 carbon atoms, alkoxy group having 1 to 5 carbon atoms, aryl group having 6 to 12 carbon atoms, alkenyl group having 2 to 5 carbon atoms or aralkyl group having 7 to 17 carbon atoms. R1 and R2 may be bonded together to form a carbon ring or heterocyclic ring. R3 and R4 are each independently a hydrogen atom, fluorine atom, chlorine atom, bromine atom, iodine atom, alkyl group having 1 to 9 carbon atoms, alkoxy group having 1 to 5 carbon atoms or aryl group having 6 to 12 carbon atoms. R5 is an alkylene group having 1 to 9 carbon atoms. a is an integer of 0 to 20, and b is an integer of 1 to 500.)] as the main recurring units, the molar ratio of the unit (A) to the unit (B) being 5/95 to 95/5.

### Claim 2 (depends on 1)

The polycarbonate resin according to claim 1, wherein the molar ratio of the unit (A) to the unit (B) is 30/70 to 90/10.

### Claim 3 (depends on 1)

The polycarbonate resin according to claim 1, wherein the unit (A) is a unit (A1) represented by the following formula:

### Claim 4 (depends on 1)

The polycarbonate resin according to claim 1 which has a glass transition temperature of 110 to 155° C.

### Claim 5 (depends on 1)

The polycarbonate resin according to claim 1 which has a pencil hardness of 2H or more.

### Claim 6 (depends on 1)

A molded article formed from the polycarbonate resin of claim 1.

### Claim 7 (depends on 1)

A film formed from the polycarbonate resin of claim 1.

### Claim 8 (depends on 2)

A molded article formed from the polycarbonate resin of claim 2.

### Claim 9 (depends on 3)

A molded article formed from the polycarbonate resin of claim 3.

### Claim 10 (depends on 4)

A molded article formed from the polycarbonate resin of claim 4.

### Claim 11 (depends on 5)

A molded article formed from the polycarbonate resin of claim 5.

### Claim 12 (depends on 2)

A film formed from the polycarbonate resin of claim 2.

### Claim 13 (depends on 3)

A film formed from the polycarbonate resin of claim 3.

### Claim 14 (depends on 4)

A film formed from the polycarbonate resin of claim 4.

### Claim 15 (depends on 5)

A film formed from the polycarbonate resin of claim 5.