# US 2017/0283547 A1 · Copolycarbonate resin and method for preparing the same

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- Number: US 2017/0283547 A1
- Document ID: US20170283547A1
- Status: Published application
- Kind: A1
- Application number: 15/508,449
- Filed: 2016-06-22
- Published: 2017-10-05
- Earliest claimed: 2015-07-01
- Assignees: LG Chem, Ltd.
- Applicants: LG Chem, Ltd.
- Inventors: Un KO; Hyoung Min BAHN; Byoung Kyu CHUN; Jung Jun PARK; Ki Jae LEE; Young Wook SON; Moo Ho HONG; Young Young HWANG; Min Jeong KIM
- Web page: https://patentgrep.com/patent/US20170283547A1

## CPC

- C08G 63/64: Polyesters containing both carboxylic ester groups and carbonate groups
- C08J 5/00: Manufacture of articles or shaped materials containing macromolecular substances (manufacture of semi-permeable membranes B01D67/00 - B01D71/00)
- C08K 5/1515: Three-membered rings
- C08K 5/527: Cyclic esters
- C08L 69/005: {Polyester-carbonates}
- C08L 83/04: Polysiloxanes
- C08G 2120/00: Compositions for reaction injection moulding processes
- C08J 2369/00: Characterised by the use of polycarbonates; Derivatives of polycarbonates
- C08J 2463/00: Characterised by the use of epoxy resins; Derivatives of epoxy resins
- C08J 2483/04: Polysiloxanes
- C08L 2205/03: containing three or more polymers in a blend
- C08L 2205/06: having improved processability or containing aids for moulding methods
- 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)
- C08L: COMPOSITIONS OF MACROMOLECULAR COMPOUNDS (compositions based on polymerisable monomers C08F, C08G; artificial filaments or fibres D01F; textile treating compositions D06)

## Abstract

The present disclosure relates to a polycarbonate resin and a method of preparing the same, has an effect of providing a polycarbonate resin having superior chemical resistance and wear resistance due to application of a predetermined comonomer thereto, and a method of preparing the same.

## Claims

### Claim 1

A copolycarbonate resin, wherein the copolycarbonate resin is prepared by polymerizing a bisphenol based monomer, a comonomer represented by Formula 1 below, and a carbonate precursor, and an amount of the comonomer is 0.1 to 19% by weight based on a total weight of the bisphenol based monomer and the comonomer:
R1 and R2 are each independently C1 to C10 alkylene, and n is an integer of 1 to 50.

### Claim 2 (depends on 1)

The copolycarbonate resin according to claim 1, wherein the carbonate precursor is comprised in an amount of 10 to 150 parts by weight based on 100 parts by weight of a total of the bisphenol based monomer and the comonomer.

### Claim 3 (depends on 1)

The copolycarbonate resin according to claim 1, wherein the bisphenol based monomer is one or more 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, 2,2-bis(4-hydroxyphenyl)propane (bisphenol A), 2,2-bis(4-hydroxyphenyl)butane, 1,1-bis(4-hydroxyphenyl)cyclohexane (bisphenol Z), 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]polydimethylsiloxane.

### Claim 4 (depends on 1)

The copolycarbonate resin according to claim 1, wherein the carbonate precursor is a compound represented by Formula 2 below:
wherein X1, X2 are each independently a halogen, a haloalkyl group, a halocycloalkyl group, a haloaryl group, an alkoxy group, or a haloalkoxy group.

### Claim 5 (depends on 1)

The copolycarbonate resin according to claim 1, wherein the copolycarbonate further comprises a molecular weight regulator.

### Claim 6 (depends on 5)

The copolycarbonate resin according to claim 5, wherein the molecular weight regulator is mono-alkylphenol.

### Claim 7 (depends on 5)

The copolycarbonate resin according to claim 5, wherein an amount of the molecular weight regulator is 0.1 to 10 parts by weight based on 100 parts by weight of a total of the bisphenol based monomer and the comonomer.

### Claim 8 (depends on 1)

The copolycarbonate resin according to claim 1, wherein a weight-average molecular weight of the copolycarbonate resin is 10,000 to 50,000 g/mol.

### Claim 9 (depends on 1)

The copolycarbonate resin according to claim 1, wherein a reduced weight of the copolycarbonate resin after being brought into contact with 20% by weight of an aqueous HCl solution for 168 hours according to ASTM D543 is 10% by weight or less.

### Claim 10 (depends on 1)

The copolycarbonate resin according to claim 1, wherein wear resistance of the copolycarbonate resin is 1 B or more according to ASTM D3363.

### Claim 11

A method of preparing a copolycarbonate resin, the method comprising a step of interfacially polymerizing a bisphenol based monomer, a comonomer represented by Formula 1 below, and a carbonate precursor:
wherein R1 and R2 are each independently C1 to C10 alkylene, and n is an integer of 1 to 50.

### Claim 12 (depends on 11)

The method according to claim 11, wherein, in the interfacially polymerizing, a molecular weight regulator is further comprised.

### Claim 13 (depends on 11)

The method according to claim 11, wherein, in the interfacially polymerizing, one or more of an acid binder, an organic solvent, and a reaction accelerator is further comprised.

### Claim 14 (depends on 11)

The method according to claim 11, wherein a tin content in the comonomer represented by Formula 1 is 10 ppm or less by mass (based on an element).

### Claim 15 (depends on 11)

The method according to claim 11, wherein a hydroxybenzoic acid content in the comonomer represented by Formula 1 is 500 ppm or less by mass.

### Claim 16 (depends on 11)

The method according to claim 11, wherein a hydroxybenzoic acid alkyl ester content in the comonomer represented by Formula 1 is 1.0% by mass or less.

### Claim 17 (depends on 0, 1)

A copolycarbonate resin composition, comprising 100 parts by weight of the copolycarbonate resin according to claim 1, 0.005 to 0.5 parts by weight of a diphosphite compound, 0.001 to 0.5 parts by weight of alicyclic epoxy compound, and 0.01 to 1 parts by weight of modified silicone.

### Claim 18 (depends on 17)

The copolycarbonate resin composition according to claim 17, wherein the diphosphite compound is bis(2,4-dicumylphenyl)pentaerythritol diphosphite.

### Claim 19 (depends on 1)

A molded article, comprising the copolycarbonate resin according to claim 1.

### Claim 20 (depends on 19)

The molded article according to claim 19, wherein the molded article is an injection-molded article.