# US 10,767,052 B2 · Polycarbonate resin composition

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- Number: US 10,767,052 B2
- Document ID: US10767052B2
- Status: Granted
- Kind: B2
- Application number: 16/068,612
- Filed: 2017-10-17
- Published: 2019-01-17
- Granted: 2020-09-08
- Earliest claimed: 2016-10-20
- Assignees: LG Chem, Ltd.
- Applicants: LG Chem, Ltd.
- Inventors: Ki Jae Lee; Jung Jun Park; Moo Ho Hong; Hyong Min Bahn; Young Young Hwang
- Web page: https://patentgrep.com/patent/US10767052B2

## CPC

- C08L 83/10: 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)
- C08G 64/18: Block or graft polymers
- C08G 64/186: {containing polysiloxane sequences}
- C08L 69/00: Compositions of polycarbonates; Compositions of derivatives of polycarbonates
- C08G 77/398: containing boron or metal atoms
- C08G 77/448: containing polycarbonate sequences
- C08L 2205/02: containing two or more polymers of the same C08L -group
- C08L: COMPOSITIONS OF MACROMOLECULAR COMPOUNDS (compositions based on polymerisable monomers C08F, C08G; artificial filaments or fibres D01F; textile treating compositions D06)
- C08G: MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS

## 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,

## Claims

### Claim 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,
R1 to R4 are each independently hydrogen, a C1-10 alkyl, a C1-10 alkoxy, or a halogen, and
Z1 is a C1-10 alkylene unsubstituted or substituted with a phenyl, a C3-15 cycloalkylene unsubstituted or substituted with a C1-10 alkyl, O, S, SO, SO2, or CO,
wherein, in Chemical Formula 2,
each X1 is independently a C1-10 alkylene,
each R5 is independently hydrogen; a C1-15 alkyl unsubstituted or substituted with an oxiranyl, an oxiranyl-substituted C1-10 alkoxy, or a C6-20 aryl; a halogen; a C1-10 alkoxy; an allyl; a C1-10 haloalkyl; or a C6-20 aryl, and
n is an integer of 10 to 200,
wherein, in Chemical Formula 3,
each X2 is independently a C1-10 alkylene,
each Y1 is independently hydrogen, a C1-6 alkyl, a halogen, a hydroxy, a C1-6 alkoxy, or a C6-20 aryl,
each R6 is independently hydrogen; a C1-15 alkyl unsubstituted or substituted with an oxiranyl, an oxiranyl-substituted C1-10 alkoxy, or a C6-20 aryl; a halogen; a C1-10 alkoxy; an allyl; a C1-10 haloalkyl; or a C6-20 aryl, and
m is an integer of 10 to 200,
wherein, in Chemical Formula 4,
Z2 is a C1-10 alkylene unsubstituted or substituted with a phenyl, a C3-15 cycloalkylene unsubstituted or substituted with a C1-10 alkyl, O, S, SO, SO2, 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.

### Claim 2 (depends on 1)

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:

### Claim 3 (depends on 1)

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:

### Claim 4 (depends on 3)

The polycarbonate resin composition of claim 3, characterized in that R5 is methyl.

### Claim 5 (depends on 1)

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

### Claim 6 (depends on 1)

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:

### Claim 7 (depends on 6)

The polycarbonate resin composition of claim 6, characterized in that R5 is methyl.

### Claim 8 (depends on 1)

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

### Claim 9 (depends on 1)

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.

### Claim 10 (depends on 1)

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:

### Claim 11 (depends on 1)

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.