Copolycarbonate and composition comprising the same

Patent metadata

Field	Value
Publication number	US-9732186-B2
Application number	US-201514914153-A
Country	US
Kind code	B2
Filing date	Sep 4, 2015
Priority date	Sep 5, 2014
Publication date	Aug 15, 2017
Grant date	Aug 15, 2017

Abstract

The present invention relates to copolycarbonates and a composition comprising the same. The copolycarbonate according to the present invention has a structure in which specific siloxane compounds are introduced in the main chain of polycarbonate and thus exhibits the effects of improving impact strength at room temperature, impact strength at low-temperature, and melt index.

First claim

The invention claimed is:

1. A polycarbonate composition comprising:
a copolycarbonate; and
a polycarbonate,
wherein the copolycarbonate has a weight average molecular weight of 1,000 to 100,000 g/mol, which comprises:
a repeating unit represented by the following Formula 1,
a repeating unit represented by the following Formula 2, and
a repeating unit represented by the following Formula 3:

in the above Formula 1,
each of R 1 , R 2 , R 3 and R 4 is independently hydrogen, C 1-10 alkyl, or halogen, and
Z is C 1-10 alkylene unsubstituted or substituted by phenyl, C 3-10 cycloalkylene, O, S, SO, SO 2 , or CO,

in the above Formula 2,
each of Ra is independently C 1-10 alkylene,
each of R 5 is independently hydrogen, or C 1-13 alkyl, and
n is an integer of 1 to 40,

in the above Formula 3,
each of Rb is independently C 1-10 alkylene,
each of R 6 is independently hydrogen, or C 1-13 alkyl, and
m is an integer of 41 to 85,
wherein a ratio of the weight of the repeating unit represented by Formula 1 to the total weight of the repeating units represented by Formula 2 and Formula 3 is 1:0.04 to 1:0.07, and
wherein a weight ratio of the copolycarbonate and the polycarbonate is from 80:20 to 50:50.

2. The polycarbonate composition of claim 1 wherein the repeating unit represented by the Formula 1 is derived from one or more aromatic diol compounds selected from the group consisting of bis(4-hydroxyphenyl) methane, bis(4-hydroxyphenyl)ether, bis(4-hydroxyphenyl)sulfone, bis(4-hydroxyphenyl)sulfoxide, bis(4-hydroxyphenyl)sulfide, bis(4-hydroxyphenyl)ketone, 1,1-bis(4-hydroxyphenyl)ethane, bisphenol A, 2,2-bis(4-hydroxyphenyl)butane, 1,1-bis(4-hydroxyphenyl)cyclohexane, 2,2-bis(4-hydroxy-3,5-dibromophenyl) propane, 2,2-bis(4-hydroxy-3,5-dichlorophenyl)propane, 2,2-bis(4-hydroxy-3-bromophenyl)propane, 2,2-bis(4-hydroxy-3-chlorophenyl)propane, 2,2-bis(4-hydroxy-3-methylphenyl)propane, 2,2-bis(4-hydroxy-3,5-dimethyl)propane, 1,1-bis(4-hydroxyphenyl)-1-phenylethane, bis(4-hydroxyphenyl)diphenylmethane, and a,ω-bis[3-(o-hydroxyphenyl)propyl]polydimethylsiloxane.

3. The polycarbonate composition of claim 1 wherein the repeating unit represented by the Formula 1 is represented by the following Formula 1-1:

4. The polycarbonate composition of claim 1 wherein each of R 5 is independently C 1-6 alkyl.

5. The polycarbonate composition of claim 1 wherein each of R 6 is independently C 1-6 alkyl.

6. The polycarbonate composition of claim 1 wherein R 5 and R 6 are the same as each other.

7. The polycarbonate composition of claim 1 wherein n is an integer of 10 to 35.

8. The polycarbonate composition of claim 1 wherein m is an integer of 45 to 85.

9. The polycarbonate composition of claim 1 wherein the repeating unit represented by the Formula 2 is represented by the following Formula 2-1:

10. The polycarbonate composition of claim 1 wherein the repeating unit represented by the Formula 3 is represented by the following Formula 3-1:

11. The polycarbonate composition of claim 1 wherein the copolycarbonate has a weight average molecular weight of 15,000 to 35,000 g/mol.

12. The polycarbonate composition of claim 1 , wherein the polycarbonate comprises the repeating unit represented by the following Formula 4:

in the above Formula 1,
each of R′ 1 , R′ 2 , R′ 3 and R′ 4 are independently hydrogen, C 1-10 alkyl, or halogen, and
Z′ is C 1-10 alkylene unsubstituted or substituted by phenyl, C 3-10 cycloalkylene, O, S, SO, SO 2 , or CO.

13. The polycarbonate composition of claim 1 , wherein the weight ratio of the copolycarbonate and the polycarbonate is from 80:20 to 60:40.

Assignees

• Lg Chemical Ltd

Inventors

• Bahn Hyong Min
• Hong Moo Ho
• Park Jung Jun
• Chun Byoung Kyu
• Hwang Young Young
• Kim Min Jeong
• Ko Un
• Lee Ki Jae

Classifications

• C08G64/186 Primary

  containing polysiloxane sequences · CPC title

• C08G77/448

  containing polycarbonate sequences · CPC title

• C08L69/00

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

• C08L2205/02

  containing two or more polymers of the same C08L -group · CPC title

• C08G64/307

  and phenols · CPC title