Polycarbonate resin composition

Patent metadata

Field	Value
Publication number	US-10767052-B2
Application number	US-201716068612-A
Country	US
Kind code	B2
Filing date	Oct 17, 2017
Priority date	Oct 20, 2016
Publication date	Sep 8, 2020
Grant date	Sep 8, 2020

Abstract

The present disclosure relates to a polycarbonate resin composition having increased fluidity and excellent physical properties, and comprising:
a first copolycarbonate comprising a repeating unit represented by Chemical Formula 1, a repeating unit represented by Chemical Formula 2, and a repeating unit represented by Chemical Formula 3 below; and a second copolycarbonate comprising a repeating unit represented by Chemical Formula 1 and a repeating unit represented by Chemical Formula 4 below,

First claim

The invention claimed is:

1. A polycarbonate resin composition comprising:
a first copolycarbonate comprising a repeating unit represented by Chemical Formula 1 below, a repeating unit represented by Chemical Formula 2 below, and a repeating unit represented by Chemical Formula 3 below; and
a second copolycarbonate comprising a repeating unit represented by Chemical Formula 1 below and a repeating unit represented by Chemical Formula 4 below:

wherein, in Chemical Formula 1,
R 1 to R 4 are each independently hydrogen, a C 1-10 alkyl, a C 1-10 alkoxy, or a halogen, and
Z 1 is a C 1-10 alkylene unsubstituted or substituted with a phenyl, a C 3-15 cycloalkylene unsubstituted or substituted with a C 1-10 alkyl, O, S, SO, SO 2 , or CO,

wherein, in Chemical Formula 2,
each X 1 is independently a C 1-10 alkylene,
each R 5 is independently hydrogen; a C 1-15 alkyl unsubstituted or substituted with an oxiranyl, an oxiranyl-substituted C 1-10 alkoxy, or a C 6-20 aryl; a halogen; a C 1-10 alkoxy; an allyl; a C 1-10 haloalkyl; or a C 6-20 aryl, and
n is an integer of 10 to 200,

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

wherein, in Chemical Formula 4,
Z 2 is a C 1-10 alkylene unsubstituted or substituted with a phenyl, a C 3-15 cycloalkylene unsubstituted or substituted with a C 1-10 alkyl, O, S, SO, SO 2 , or CO, and
l is an integer of 1 to 10,
wherein the second copolycarbonate has a weight average molecular weight of 50,000 to 100,000 g/mol,
wherein in the first copolycarbonate, a weight ratio of the repeating unit represented by Chemical Formula 1 to total weight of the repeating unit represented by Chemical Formula 2 and the repeating unit represented by Chemical Formula 3 is 1:0.001 to 1:0.2, and
wherein the first copolycarbonate and the second polycarbonate are contained in a weight ratio 1:1 to 1:2.

2. The polycarbonate resin composition of claim 1 , characterized in that the repeating unit represented by Chemical Formula 1 is represented by Chemical Formula 1-1 below:

3. The polycarbonate resin composition of claim 1 , characterized in that the repeating unit represented by Chemical Formula 2 is represented by Chemical Formula 2-2 below:

4. The polycarbonate resin composition of claim 3 , characterized in that R 5 is methyl.

5. The polycarbonate resin composition of claim 1 , characterized in that n is an integer of 10 to 50.

6. The polycarbonate resin composition of claim 1 , characterized in that the repeating unit represented by Chemical Formula 3 is represented by Chemical Formula 3-2 below:

7. The polycarbonate resin composition of claim 6 , characterized in that R 5 is methyl.

8. The polycarbonate resin composition of claim 1 , characterized in that m is an integer of 30 to 70.

9. The polycarbonate resin composition of claim 1 , characterized in that the first copolycarbonate has a weight average molecular weight of 1000 to 100,000 g/mol.

10. The polycarbonate resin composition of claim 1 , characterized in that the repeating unit represented by Chemical Formula 4 is represented by Chemical Formula 4-1 below:

11. The polycarbonate resin composition of claim 1 , further comprising a polycarbonate characterized in that a polysiloxane structure is not introduced into the main chain of the polycarbonate.

Assignees

• Lg Chemical Ltd

Inventors

• Lee Ki Jae
• Park Jung Jun
• Hong Moo Ho
• Bahn Hyong Min
• Hwang Young Young

Classifications

• C08L2205/025

  containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure · CPC title

• C08G77/448

  containing polycarbonate sequences · CPC title

• C08G77/398

  containing boron or metal atoms · CPC title

• C08G64/226

  and alcohols · CPC title

• C08G64/186

  containing polysiloxane sequences · CPC title