Copolycarbonate and composition containing the same

Patent metadata

Field	Value
Publication number	US-9868818-B2
Application number	US-201515024664-A
Country	US
Kind code	B2
Filing date	Nov 16, 2015
Priority date	Dec 4, 2014
Publication date	Jan 16, 2018
Grant date	Jan 16, 2018

Abstract

Disclosed is a polycarbonate composition including a polycarbonate; and a copolycarbonate, where the copolycarbonate includes: an aromatic polycarbonate-based first repeating unit; and aromatic polycatbonate-based second repeating units having siloxane bonds, which include a repeating unit represented by Chemical Formula 2 and a repeating unit represented by Chemical Formula 3, where the ratio of an impact strength at room temperature and an impact strength at low-temperature (impact strength at room temperature/impact strength at low-temperature) as measured at 23° C. and −30° C., respectively, in accordance with ASTM D256 (⅛ inch, Notched Izod) is 1.01 to 1.30, and the impact strength at room temperature is 840 to 1000 J/m:

First claim

The invention claimed is:

1. A polycarbonate composition comprising:
a polycarbonate; and
a copolycarbonate,
wherein the copolycarbonate comprises: an aromatic polycarbonate-based first repeating unit; and aromatic polycarbonate-based second repeating units having siloxane bonds,
wherein the ratio of an impact strength at room temperature and an impact strength at low-temperature (impact strength at room temperature/impact strength at low-temperature) as measured at 23° C. and −30° C., respectively, in accordance with ASTM D256 (⅛ inch, Notched Izod) is 1.01 to 1.30, and the impact strength at room temperature is 840 to 1000 J/m, and
wherein the second repeating units comprise a repeating unit represented by Chemical Formula 2 and a repeating unit represented by Chemical Formula 3:

in 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 10 to 200,

in 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; 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.

2. The polycarbonate composition of claim 1 , wherein the impact strength at low-temperature is 650 to 950 J/m.

3. The polycarbonate composition of claim 1 , wherein the melt index as measured in accordance with ASTM D1238 (300° C., 1.2 kg conditions) is 3 to 20 g/10 min.

4. The polycarbonate composition of claim 1 , wherein the copolycarbonate has a weight average molecular weight of 1,000 to 100,000 g/mol.

5. The polycarbonate composition of claim 1 , wherein the first repeating unit is represented by Chemical Formula 1:

in 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.

6. The polycarbonate composition of claim 5 , 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-phenyl ethane, bis(4-hydroxyphenyl)diphenylmethane, and α,ω-bis[3-(o-hydroxyphenyl)propyl]polydimethylsiloxane.

7. The polycarbonate composition of claim 5 , wherein the Chemical Formula 1 is represented by the following Chemical Formula 1-1:

8. The polycarbonate composition of claim 1 , wherein the weight ratio of the repeating unit represented by Chemical Formula 2 and the repeating unit represented by Chemical Formula 3 is 99:1 to 1:99.

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

10. The polycarbonate composition of claim 1 , wherein the repeating unit represented by Chemical Formula 3 is represented by the following Chemical Formula 3-2:

11. The polycarbonate composition of claim 1 , wherein a polysiloxane structure is not introduced in a main chain of the polycarbonate.

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

in the above Chemical Formula 4,
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.

Assignees

• Lg Chemical Ltd

Inventors

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

Classifications

• C09K21/08

  containing halogen · CPC title

• C08J5/00

  Manufacture of articles or shaped materials containing macromolecular substances (manufacture of semi-permeable membranes B01D67/00 - B01D71/00) · CPC title

• C08L2201/10

  Transparent films; Clear coatings; Transparent materials · CPC title

• C08G77/448

  containing polycarbonate sequences · CPC title

• C09K21/14

  Macromolecular materials · CPC title