Copolycarbonate and composition comprising the same

Patent metadata

Field	Value
Publication number	US-9969841-B2
Application number	US-201515025176-A
Country	US
Kind code	B2
Filing date	Nov 16, 2015
Priority date	Dec 4, 2014
Publication date	May 15, 2018
Grant date	May 15, 2018

Abstract

The present invention relates to a copolycarbonate and a molded article comprising the same. The copolycarbonates according to the present invention has a structure in which a specific siloxane compound is introduced in a main chain of the polycarbonate, and has effects of improving impact strength at room temperature, impact strength at low temperature, and melt index properties.

First claim

The invention claimed is:

1. A copolycarbonate comprising:
1) a repeating unit represented by Chemical Formula 2 and a repeating unit represented by Chemical Formula 3, and
2) a repeating unit represented by the following Chemical Formula 4,
wherein the copolycarbonate has a weight average molecular weight of 1,000 to 100,000 g/mol:

in Chemical Formula 2,
each of X 2 is independently C 1-10 alkylene,
each of Y 1 is independently hydrogen, C 1-6 alkyl, halogen, hydroxy, alkoxy or C 6-20 aryl,
each of R 2 is independently hydrogen; or C 1-15 alkyl unsubstituted or substituted with oxiranyl, oxiranyl-substituted C 1-10 alkoxy, or C 6-20 aryl; halogen; C 1-10 alkoxy; allyl; C 1-10 haloalkyl; or C 6-20 aryl, and
m is an integer of 10 to 200,

in Chemical Formula 3,
each of X 3 is independently C 1-10 alkylene,
each of Y 2 is independently C 1-10 alkoxy,
each of R 3 is independently hydrogen; or C 1-15 alkyl unsubstituted or substituted with oxiranyl, oxiranyl-substituted alkoxy, or C 6-20 aryl; halogen; C 1-10 alkoxy; allyl; C 1-10 haloalkyl; or C 6-20 aryl, and
l is an integer of 10 to 200,

in Chemical Formula 4,
X is C 1-10 alkylene unsubstituted or substituted with phenyl, C 3-15 cycloalkylene unsubstituted or substituted with C 1-10 alkyl, O, S, SO, SO 2 , or CO, and
R 4 , R 5 , R 6 and R 7 are each independently hydrogen, C 1-10 alkyl, C 1-10 alkoxy, or halogen.

2. The copolycarbonate of claim 1 , wherein R 1 , R 2 and R 3 are each independently C 1-6 alkyl.

3. The copolycarbonate of claim 1 , in n, m and 1 are each independently an integer of 30 to 60.

4. The copolycarbonate of claim 1 , wherein a weight ratio between the repeating unit represented by Chemical Formula 2 and the repeating unit represented by Chemical Formula 3 is 1:99 to 99:1.

5. The copolycarbonate of claim 1 , wherein Chemical Formula 2 is represented by the following Chemical Formula 2-1:

6. The copolycarbonate of claim 1 , wherein Chemical Formula 3 is represented by the following Chemical Formula 3-1:

7. The copolycarbonate of claim 1 , wherein the repeating unit represented by Chemical Formula 4 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-dimethylphenyl)propane, 1,1-bis(4-hydroxyphenyl)-1-phenylethane, and bis(4-hydroxyphenyl)diphenylmethane.

8. The copolycarbonate of claim 1 , wherein Chemical Formula 4 is represented by the following Chemical Formula 4-1:

9. The copolycarbonate of claim 1 , wherein the copolycarbonate has a weight average molecular weight of 15,000 to 40,000 g/mol.

10. A polycarbonate composition comprising:
a polycarbonate; and
the copolycarbonate of claim 1 .

11. The polycarbonate composition of claim 10 , therein a polysiloxane structure is not introduced in a main chain of the polycarbonate.

12. The polycarbonate composition of claim 10 , wherein the polycarbonate comprises a repeating unit represented b e following Chemical Formula 5:

in Chemical Formula 5,
R 4 , R 5 , R 6 and R 7 are each independently hydrogen, C 1-10 alkyl, C 1-10 alkoxy, or halogen,
X′ is C 1-10 alkylene unsubstituted or substituted with phenyl, C 3-15 cycloalkylene unsubstituted or substituted with C 1-10 alkyl, O, S, SO, SO 2 or CO.

13. The polycarbonate composition of claim 10 , wherein a weight ratio of the copolycarbonate and the polycarbonate is from 99:1 to 1:99.

Assignees

• Lg Chemical Ltd

Inventors

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

Classifications

• C08G64/186 Primary

  containing polysiloxane sequences · CPC title

• C08G64/24

  and phenols · CPC title

• C08G77/12

  containing silicon bound to hydrogen · CPC title

• C08G77/38

  Polysiloxanes modified by chemical after-treatment · CPC title

• C08L69/00

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