Copolycarbonate and composition comprising the same

Patent metadata

Field	Value
Publication number	US-10174194-B2
Application number	US-201515319257-A
Country	US
Kind code	B2
Filing date	Dec 2, 2015
Priority date	Dec 4, 2014
Publication date	Jan 8, 2019
Grant date	Jan 8, 2019

Abstract

Disclosed is a copolycarbonate having an aromatic polycarbonate-based first repeating unit and one or more aromatic polycarbonate-based second repeating units having siloxane bonds, where the copolycarbonate provides an improved residence heat stability, and where the second repeating unit includes a repeating unit represented by Chemical Formula 2 and a repeating unit represented by Chemical Formula 3:

First claim

The invention claimed is:

1. A copolycarbonate comprising: an aromatic polycarbonate-based first repeating unit, and one or more aromatic polycarbonate-based second repeating units having siloxane bonds, and having ΔYI of 0.5 to 2 as measured according to the following Equation 1:
Δ YI=YI (320° C.,15 minutes)− YI (320° C.,0 minute)  [Equation 1]

in the Equation 1,
YI (320° C., 0 minute) is YI (Yellow Index) measured in accordance with ASTM D1925 with respect to a specimen (width/length/thickness=60 mm/40 mm/3 mm) which is obtained by injection-molding the copolycarbonate at 320° C. and
YI (320° C., 15 minutes) is YI (Yellow Index) measured in accordance with ASTM D1925 with respect to a specimen (width/length/thickness=60 mm/40 mm/3 mm) which is obtained by residing the copolycarbonate at 320° C. for 15 minutes and then conducting injection molding,
wherein the second repeating unit comprises a repeating unit represented by the following Chemical Formula 2 and a repeating unit represented by the following Chemical Formula 3:

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 32 to 37,

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 55 to 62.

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

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

4. The copolycarbonate of claim 1 , wherein
the content of the aromatic polycarbonate-based first repeating units is 90 to 99% relative to the total weight of the aromatic polycarbonate-based first repeating units and one or more aromatic polycarbonate-based second repeating units having siloxane bonds.

5. The copolycarbonate of claim 1 , wherein
the copolycarbonate comprises two kinds of aromatic polycarbonate-based second repeating units having siloxane bonds.

6. The copolycarbonate of claim 1 , wherein
the first repeating unit is represented by the following Chemical Formula 1:

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.

7. The copolycarbonate of claim 6 , 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, and bis(4-hydroxyphenyl)diphenylmethane.

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

9. The copolycarbonate 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 1:99 to 99:1.

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

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

12. A polycarbonate composition comprising the copolycarbonate of claim 1 , and a polycarbonate.

13. The polycarbonate composition of claim 12 , wherein
a polysiloxane structure is not introduced in a main chain of the polycarbonate.

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

in the 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

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

Classifications

• C09K21/08

  containing halogen · CPC title

• C08G64/1691

  unsaturated · CPC title

• C08G64/307

  and phenols · CPC title

• C08L2201/10

  Transparent films; Clear coatings; Transparent materials · CPC title

• C08L2205/05

  containing polymer components which can react with one another · CPC title