Copolycarbonate and composition comprising the same

Patent metadata

Field	Value
Publication number	US-9902853-B2
Application number	US-201515316727-A
Country	US
Kind code	B2
Filing date	Dec 3, 2015
Priority date	Dec 4, 2014
Publication date	Feb 27, 2018
Grant date	Feb 27, 2018

Abstract

The present invention relates to a copolycarbonate and a composition comprising the same, and more specifically to a technique for improving flame retardance and chemical resistance while maintaining inherent impact strength and melt index of the copolycarbonate, by comprising a branched repeating unit in the copolycarbonate structure.

First claim

The invention claimed is:

1. A copolycarbonate comprising
repeating units represented by Chemical Formulae 1 to 3, and
a branched repeating unit represented by Chemical Formula 4,
wherein one or more of the repeating units represented by Chemical Formulae 1 to 3 are linked to each other via the branched repeating unit represented by Chemical Formula 4, and
wherein the copolycarbonate has a weight average weight molecular weight of 1,000 to 100,000 g/mol:

in the Chemical Formula 1,
R 1 , R 2 , R 3 and R 4 are each independently hydrogen, C 1-10 alkyl, C 1-10 alkoxy, or halogen, and
Z 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,

in the Chemical Formula 2,
each of X 1 is independently C 1-10 alkylene,
each of R 5 is independently hydrogen; 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
n is an integer of 1 to 200,

in the Chemical Formula 3,
each of X 2 is independently C 1-10 alkylene,
each of Y 1 is independently hydrogen, C 1-6 alkyl, halogen, hydroxy, C 1-6 alkoxy, or C 6-20 aryl,
each of R 6 is independently hydrogen; 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 1 to 200,

in the Chemical Formula 4,
R 7 is hydrogen, C 1-10 alkyl, or

R 8 , R 9 , R 10 and R 11 are each independently hydrogen, C 1-10 alkyl, halogen, C 1-10 alkoxy; allyl; C 1-10 haloalkyl; or C 6-20 aryl, and
n1, n2, n3 and n4 are each independently an integer of 1 to 4.

2. The copolycarbonate according to claim 1 , wherein
the repeating unit represented by Chemical 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-dimethylphenyl)propane, 1,1-bis(4-hydroxyphenyl)-1-phenylethane, bis(4-hydroxyphenyl)diphenylmethane, and α,ω-bis[3-(o-hydroxyphenyl)propyl]polydimethylsiloxane.

3. The copolycarbonate according to claim 1 , wherein
the repeating unit represented by Chemical Formula 1 is represented by the following Chemical Formula 1-1:

4. The copolycarbonate according to claim 1 , wherein
the repeating unit represented by Chemical Formula 2 is represented by the following Chemical Formula 2-2:

5. The copolycarbonate according to claim 1 , wherein
the repeating unit represented by Chemical Formula 3 is represented by the following Chemical Formula 3-2:

6. The copolycarbonate according to claim 1 , wherein
n is an integer of 10 to 35.

7. The copolycarbonate according to claim 1 , wherein
m is an integer of 45 to 100.

8. The copolycarbonate according to claim 1 , wherein
the repeating unit represented by Chemical Formula 4 is represented by the following Chemical Formula 4-2 or Chemical Formula 4-3:

9. A polycarbonate composition comprising the copolycarbonate according to claim 1 and a polycarbonate.

10. The polycarbonate composition according to claim 9 , wherein
a polysiloxane structure is not introduced in a main chain of the polycarbonate.

11. The polycarbonate composition of claim 9 , wherein
the polycarbonate comprises a repeating unit represented by the following Chemical Formula 5:

in the Chemical Formula 5,
R′ 1 , R′ 2 , R′ 3 and R′ 4 are each independently hydrogen, C 1-10 alkyl, C 1-10 alkoxy, or halogen,
Z′ 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.

Assignees

• Lg Chemical Ltd

Inventors

• Hwang Young Young
• Park Jung Jun
• Hong Moo Ho

Classifications

• C09K21/08

  containing halogen · CPC title

• C08L83/10

  Block- or graft-copolymers containing polysiloxane sequences (obtained by polymerising a compound having a carbon-to-carbon double bond on to a polysiloxane C08L51/08, C08L53/00) · CPC title

• C08K2201/004

  Additives being defined by their length · CPC title

• C08L69/00 Primary

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

• C08G64/22

  using carbonyl halides · CPC title