# US 9,751,979 B2 · Copolycarbonate and composition containing the same

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- Number: US 9,751,979 B2
- Document ID: US9751979B2
- Status: Granted
- Kind: B2
- Application number: 15/029,081
- Filed: 2015-12-04
- Published: 2016-11-10
- Granted: 2017-09-05
- Earliest claimed: 2014-12-04
- Assignees: LG Chem, Ltd.
- Applicants: LG Chem, Ltd.
- Inventors: Young Wook Son; Hyong Min Bahn; Young Young Hwang; Jung Jun Park; Moo Ho Hong; Ki Jae Lee; Byoung Kyu Chun; Un Ko
- Web page: https://patentgrep.com/patent/US9751979B2

## CPC

- C08L 69/00: Compositions of polycarbonates; Compositions of derivatives of polycarbonates
- C08G 64/06: not containing aliphatic unsaturation
- C08G 64/085: {containing silicon}
- C08G 64/1666: {containing silicon}
- C08G 64/1691: {unsaturated}
- C08G 64/18: Block or graft polymers
- C08G 64/186: {containing polysiloxane sequences}
- C08G 64/22: using carbonyl halides
- C08G 64/24: and phenols
- C08G 64/307: {and phenols}
- C08G 64/38: using other monomers
- C08G 77/14: containing silicon bound to oxygen-containing groups
- C08G 77/20: containing silicon bound to unsaturated aliphatic groups
- C08G 77/448: containing polycarbonate sequences
- C08J 5/00: Manufacture of articles or shaped materials containing macromolecular substances (manufacture of semi-permeable membranes B01D67/00 - B01D71/00)
- C08J 5/08: glass fibres
- C08K 5/005: {Stabilisers against oxidation, heat, light, ozone}
- C08K 5/3475: condensed with carbocyclic rings
- C08K 5/42: Sulfonic acids; Derivatives thereof
- C08K 5/521: Esters of phosphoric acids, e.g. of H3PO4
- C08L 51/04: grafted on to rubbers
- C08L 69/005: {Polyester-carbonates}
- C08L 83/04: Polysiloxanes
- C08L 83/06: containing silicon bound to oxygen-containing groups (C08L83/12 takes precedence)
- 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)
- C09K 21/14: Macromolecular materials
- C08K 3/40: Glass
- C08K 5/0066: {Flame-proofing or flame-retarding additives}
- C08K 7/14: Glass
- C08K 2201/003: Additives being defined by their diameter
- C08K 2201/004: Additives being defined by their length
- C08K 2201/016: Additives defined by their aspect ratio
- C08L 2201/08: Stabilised against heat, light or radiation or oxydation
- C08L 2201/10: Transparent films; Clear coatings; Transparent materials
- C08L 2205/02: containing two or more polymers of the same C08L -group
- C08L 2205/025: containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
- C08L 2205/03: containing three or more polymers in a blend
- C08L 2205/035: containing four or more polymers in a blend
- C08L 2205/05: containing polymer components which can react with one another
- C08L 2205/06: having improved processability or containing aids for moulding methods
- C08L 2207/53: Core-shell polymer
- C09K 21/08: containing halogen
- 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
- C08J: WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H (working, e.g. shaping, of plastics B29)
- C08K: Use of inorganic or non-macromolecular organic substances as compounding ingredients (paints, inks, varnishes, dyes, polishes, adhesives C09)
- C09K: MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE

## 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 polycarbonate-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 copolycarbonate has a melt index (MI) of 3 to 9 g/10min as measured in accordance with ASTM D1238 (300° C., 1.2 kg conditions), and a transparency of 87 to 91% as measured in accordance with ASTM D1003 (layer thickness of 3 mm): The copolycarbonate in the composition exhibits an excellent transparency and a high spiral flow while having a high impact strength at room temperature and a low melt index.

## Claims

### Claim 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 copolycarbonate has a melt index (MI) of 3 to 9 g/10 min as measured accordance with ASTM D1238 (300° C., 1.2 kg conditions), and a transparency of 87 to 91% as measured in accordance with ASTM D1003 (layer thickness of 3 mm), 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 X1 is independently C1-10 alkylene,
each of R5 is independently hydrogen; C1-15 alkyl unsubstituted or substituted with oxiranyl, oxiranyl-substituted C1-10 alkoxy, or C6-20 aryl; halogen; C1-10 alkoxy; allyl; C1-10haloalkyl; or C6-20 aryl, and
n is an integer of 10 to 50,
in Chemical Formula 3,
each of X2 is independently C1-10 alkylene,
each of Y1 is independently hydrogen, C1-6 alkyl, halogen, hydroxy, C1-6 alkoxy, or C6-20 aryl,
each of R6 is independently hydrogen; or C1-15 alkyl unsubstituted or substituted with oxiranyl, oxiranyl-substituted C1-10 alkoxy, or C6-20 aryl; halogen; C1-10 alkoxy; allyl; C1-10haloalkyl; or C6-20 aryl, and
m is an integer of 55 to 80.

### Claim 2 (depends on 1)

The polvcarhonate composition of claim 1,
wherein the copolycarbonate has a spiral flow of 16 to 25 cm as measured in accordance with ASTM D3123 (300° C., mold temperature of 80° C., capillary thickness of 1.5 mm, holding pressure of 2000 bar).

### Claim 3 (depends on 1)

The polycarbonate composition of claim 1,
wherein the copolycarbonate has a ratio of the spiral flow and the melt index (MI) (cm/g/10 min) of 1.7 to 5.0.

### Claim 4 (depends on 1)

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

### Claim 5 (depends on 1)

The polycarbonate composition of claim 1,
wherein the first repeating unit is represented by Chemical Formula 1:
in the Chemical Formula 1,
R1, R2, R3 and R4 are each independently hydrogen, C1-10 alkyl, C1-10 alkoxy, or halogen, and
Z is C1-10 alkylene unsubstituted or substituted with phenyl, C3-15 cycloalkylene unsubstituted or substituted with C1-10 alkyl, O, S, SO, SO2, or CO.

### Claim 6 (depends on 5)

The polvcarbonate 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-phenylethane, bis(4-hydroxyphenyl)diphenylmethane, and α,ω-bis[3-(o-hydroxyphenyl)propyl]polydimethylsilaxane.

### Claim 7 (depends on 5)

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

### Claim 8 (depends on 1)

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 from 80:20 to 95:5.

### Claim 9 (depends on 1)

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

### Claim 10 (depends on 1)

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

### Claim 11 (depends on 1)

The polycarbonate composition of claim 1,
wherein the copolycarbonate has an impact strength at low-temperature of 700 to 950 J/m as measured at −30° C. in accordance with ASTM D256 (⅛inch, Notched Izod).

### Claim 12 (depends on 1)

The polycarbonate composition of claim 1,
wherein the copolycarbonate has an impact strength at room temperature of 700 to 1000 J/m as measured at 23° C. in accordance with ASTM D256 (⅛inch , Notched Izod).

### Claim 13 (depends on 1)

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

### Claim 14

The polycarbonate composition of claim l,
wherein the polycarbonate comprises a repeating unit represented by Chemical Formula 4:
in Chemical Formula 4,
R′1, R′2, R′3 and R′4 are each independently hydrogen, C1-10 alkyl, C1-10 alkoxy, or halogen, and
Z′ is C1-10 alkylene unsubstituted or substituted with phenyl, C3-15 cycloalkylene unsubstituted or substituted with C1-10 alkyl, O, S, SO, SO2 or CO.