# US 7,745,519 B2 · Non-halogen flame-retardant resin composition

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- Number: US 7,745,519 B2
- Document ID: US7745519B2
- Status: Granted
- Kind: B2
- Application number: 11/637,720
- Filed: 2006-12-13
- Published: 2007-06-14
- Granted: 2010-06-29
- Earliest claimed: 2005-12-14
- Assignees: Shin-Etsu Chemical Co., Ltd.
- Inventors: Toshiaki Ihara; Takashi Aketa
- Web page: https://patentgrep.com/patent/US7745519B2

## CPC

- C08K 5/0066: {Flame-proofing or flame-retarding additives}
- C08K 5/3475: condensed with carbocyclic rings
- C08L 23/0853: Ethylene vinyl acetate copolymers
- C08L 23/12: Polypropene
- C08L 83/04: Polysiloxanes
- 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

Provided by the invention is a non-halogen flame-retardant thermoplastic resin composition not requiring crosslinking with a peroxide, having excellent in moldability, and moreover, having high flame-retardancy to pass the test for V-0 grade of the UL-94. standards The non-halogen flame-retardant thermoplastic resin composition comprises, as a uniform blend: (A) 100 parts by mass of a thermoplastic resin other than polycarbonate and polyphenylene ether resins, (B) 10 to 300 parts by mass of an inorganic powder, (C) 1 to 50 parts by mass of an organopolysiloxane having a specified structure, and (D) 0.01 to 10 parts by mass of an organic compound having a specified structure.

## Claims

### Claim 1

A non-halogen flame-retardant thermoplastic resin composition which comprises, as a uniform blend:
(A) 100 parts by mass of a halogen-free thermoplastic resin other than a polycarbonate resin and a polyphenylene ether resin;
(B) from 10 to 300 parts by mass of an inorganic powder;
(C) from 1 to 50 parts by mass of an organopolysiloxane represented by the average unit formula
RaSiO(4-a)/2,
in which R represents a hydroxyl group, an alkyl group having 1 to 10 carbon atoms, an alkenyl group having 2 to 10 carbon atoms or an aryl group, and the subscript a represents a number in the range from 1.9 to 2.1; and
(D) from 0.01 to 10 parts by mass of a compound represented by the formula
in which R represents a carbon atom or a nitrogen atom, R1 represents a hydrogen atom an alkyl group having 1 to 20 carbon atoms or an alkylphenyl group having 7 to 20 carbon atoms, and Q represents a hydrogen atom or a sodium atom.

### Claim 2 (depends on 1)

The non-halogen flame-retardant thermoplastic resin composition according to claim 1 which further comprises from 0.01 to 10 parts by mass of a catalyst containing a platinum group element.

### Claim 3 (depends on 1)

The non-halogen flame-retardant thermoplastic resin composition according to claim 1 wherein the organopolysiloxane as the component (C) has a number-average degree of polymerization in the range from 2,500 to 30,000.

### Claim 4 (depends on 1)

The non-halogen flame-retardant thermoplastic resin composition according to claim 1, wherein the component (A) is selected from the group consisting of polyolefin-based resins, polyvinyl acetate-based resins and polystyrene-based thermoplastic elastomers.

### Claim 5 (depends on 1)

The non-halogen flame-retardant thermoplastic resin composition according to claim 1, wherein the component (B) is a metal hydroxide.

### Claim 6 (depends on 1)

The non-halogen flame-retardant thermoplastic resin composition according to claim 1 wherein the component (D) is 1H-benzotriazole, 4-methyl-1H-benzotriazole or 5-methyl-1H-benzotriazole.

### Claim 7 (depends on 1)

A molded article shaped from the non-halogen flame-retardant thermoplastic resin composition according to claim 1.

### Claim 8 (depends on 1)

A non-halogen flame-retardant thermoplastic resin composition according to claim 1 consisting essentially of, as a uniform blend:
(A) 100 parts by mass of a halogen-free thermoplastic resin other than a polycarbonate resin and a polyphenylene ether resin;
(B) from 10 to 300 parts by mass of an inorganic powder;
(C) from 1 to 50 parts by mass of an organopolysiloxane represented by the average unit formula
RaSiO(4-a)/2,
in which R represents a hydroxyl group, an alkyl group having 1 to 10 carbon atoms, an alkenyl group having 2 to 10 carbon atoms or an aryl group, and the subscript a represents a number in the range from 1.9 to 2.1; and
(D) from 0.01 to 10 parts by mass of a compound represented by the formula
in which R represents a carbon atom or a nitrogen atom, R1 represents a hydrogen atom an alkyl group having 1 to 20 carbon atoms or an alkylphenyl group having 7 to 20 carbon atoms, and Q represents a hydrogen atom or a sodium atom.

### Claim 9 (depends on 1)

A non-halogen flame-retardant thermoplastic resin composition according to claim 1 consisting of, as a uniform blend:
(A) 100 parts by mass of a halogen-free thermoplastic resin other than a polycarbonate resin and a polyphenylene ether resin;
(B) from 10 to 300 parts by mass of an inorganic powder;
(C) from 1 to 50 parts by mass of an organopolysiloxane represented by the average unit formula
RaSiO(4-a)/2,
in which R represents a hydroxyl group, an alkyl group having 1 to 10 carbon atoms, an alkenyl group having 2 to 10 carbon atoms or an aryl group, and the subscript a represents a number in the range from 1.9 to 2.1; and
(D) from 0.01 to 10 parts by mass of a compound represented by the formula
in which R represents a carbon atom or a nitrogen atom, R1 represents a hydrogen atom an alkyl group having 1 to 20 carbon atoms or an alkylphenyl group having 7 to 20 carbon atoms, and Q represents a hydrogen atom or a sodium atom.