# US 5,703,164 A · Styrene polymer composition

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 5,703,164 A
- Document ID: US5703164A
- Status: Granted
- Kind: A
- Application number: 08/798,105
- Filed: 1997-02-12
- Granted: 1997-12-30
- Earliest claimed: 1990-09-12
- Assignees: Idemitsu Kosan Co., Ltd.
- Inventors: Akikazu Nakano
- Web page: https://patentgrep.com/patent/US5703164A

## CPC

- C08L 71/126: {modified by chemical after-treatment}
- C08L: COMPOSITIONS OF MACROMOLECULAR COMPOUNDS (compositions based on polymerisable monomers C08F, C08G; artificial filaments or fibres D01F; textile treating compositions D06)

## Abstract

Disclosed is a styrene polymer composition comprising, in a specified proportion, (A) a styrene polymer having no functional group, (B) either of polyphenylene ether having a polar group or a mixture of polyphenylene ether having a polar group and a styrene polymer having no functional group; and (C) polyamide. These polymer compositions are excellent in impact resistance, water resistance, and mechanical properties, and are suitable for various purposes.

## Claims

### Claim 1

A styrene polymer composition comprising:
(A) 94 to 20% by weight of a styrene polymer having no functional group,
(B) 1 to 30% by weight of a polyphenylene ether having a polar group,
(C) 5 to 65% by weight of a polyamide, and
(D) 1 to 350 parts by weight of a filler surface-treated with a coupling agent, based on 100 parts by weight of the sum of the components (A), (B) and (C).

### Claim 2 (depends on 1)

A styrene polymer composition according to claim 1, wherein the polar group in Component (B) is an acid derivative.

### Claim 3 (depends on 1)

A styrene polymer composition according to claim 1, wherein the coupling agent used for surface treatment of the filler as Component (D) is a silane coupling agent.

### Claim 4 (depends on 2)

A styrene polymer composition according to claim 2, wherein the coupling agent is a silane coupling agent.

### Claim 5 (depends on 1)

A styrene polymer composition according to claim 1, wherein said (B) is a polyphenylene ether having a maleic acid anhydride group.

### Claim 6 (depends on 1)

A styrene polymer composition according to claim 1, wherein said (A) is a styrene polymer having a weight average molecular weight of at least 10,000.

### Claim 7 (depends on 1)

A styrene polymer composition according to claim 1, wherein said (A) is a styrene polymer having a weight average molecular weight of at least 50,000.

### Claim 8 (depends on 7)

A styrene polymer composition according to claim 7, wherein the polyphenylene is selected from the group consisting of
poly(2,3-dimethyl-6-ethylphenylene-1,4-ether),
poly(2-methyl-6-chloromethyl-1,4-phenylene)ether,
poly(2-methyl-6-hydroxydiethyl-1,4-phenylene)ether,
poly(2-methyl-6-n-butyl-1,4-phenylene)ether,
poly(2-ethyl-6-isopropyl-1,4-phenylene)ether,
poly(2-ethyl-6-n-propyl-1,4-phenylene)ether,
poly(2,3,6-trimethylphenylene-1,4-ether),
poly›2-(4'-methylphenyl)phenylene-1,4-ether!,
poly(2-bromo-6-phenylphenylene-1,4-ether),
poly(2-methyl-6-phenylphenylene-1,4-ether),
poly(2-phenylphenylene-1,4-ether),
poly(2-chlorophenylene-1,4-ether),
poly(2-methylphenylene-1,4-ether),
poly(2-chloro-6-ethylphenylene-1,4-ether),
poly(2-chloro-6-bromophenylene-1,4-ether),
poly(2-6-di-n-propylphenylene-1,4-ether),
poly(2-methyl-6-isopropylphenylene-1,4-ether),
poly(2-chloro-6-methylphenylene-1,4-ether),
poly(2-methyl-6-ethylphenylene-1,4-ether),
poly(2,6-dibromophenylene-1,4-ether),
poly(2,6-dichlorophenylene-1,4-ether),
poly(2,6-diethylphenylene-1,4-ether) and
poly(2,6-dimethylphenylene-1,4-ether).

### Claim 9 (depends on 8)

A styrene polymer composition according to claim 8, wherein the polar group is selected from the group consisting of an acid halide, a carbonyl group, an acid anhydride, an acid amide, a carboxylate, an acid azide, a sulfone group, a nitrile group, a cyano group, an isocyanic acid ester group, an amino group, a hydroxyl group, an imide group, a thiol group, an oxazoline group and an epoxy group.

### Claim 10 (depends on 9)

A styrene polymer composition according to claim 9, wherein said polar group is in an amount not less than 0.01 weight %.

### Claim 11 (depends on 10)

A styrene polymer composition according to claim 10, wherein said polyamide is selected from the group consisting of polyamide-4; polyamide-6; polyamide-4,6; polyamide-6,6; polyamide-3,4; polyamide-11; polyamide-12, and polyamide-6,10.

### Claim 12 (depends on 11)

A styrene polymer composition according to claim 11, wherein said (D) is in an amount of 5 to 200 parts by weight.

### Claim 13 (depends on 1)

A styrene polymer composition according to claim 1, wherein said styrene polymer is in an amount of 90 wt. %, said polyethylene ether having a polar group is in an amount of 5 wt. %, and said polyamide is nylon-6,6 in an amount of 5 wt. %.

### Claim 14 (depends on 13)

A styrene polymer composition according to claim 13, wherein said filler surface-treated with a coupling agent is in an amount of 43 parts by weight.