Resin composition for heat-resistant electric wire and heat-resistant electric wire

• US 10,640,676 B2
• Filed: 03/14/2013
• Issued: 05/05/2020
• Est. Priority Date: 10/08/2010
• Status: Active Grant

• Current Assignee: Yazaki Corporation
• Original Assignee: Yazaki Corporation
• Inventors: Horiuchi, Yuki
• Primary Examiner(s): Hall, Deve V
• Application Number:
  US13/803,957
• Publication Number:
  US 20130203922A1
• Time in Patent Office: 2,609 Days
• Field of Search: 524508
• CPC Class Codes: C09D 171/00 Coating compositions based on polyethers obtained by reactions forming an ether link in the main chain based on polyacetals C09D159/00; based on epoxy resins C09D163/00; based on polythioether-ethers C09D181/02; based on polyethersulfones C09D181/06; Coating compositions based on derivatives of such polymers
• CPC Class Codes: H01B 3/28 natural or synthetic rubbers
• CPC Class Codes: H01B 3/305 Polyamides or polyesteramides
• CPC Class Codes: H01B 3/427 Polyethers
• CPC Class Codes: H01B 3/441 from alkenes
• CPC Class Codes: H01B 3/442 from aromatic vinyl compounds
• CPC Class Codes: H01B 7/292 using material resistant to heat

Abstract

The present invention provides: a resin composition for a heat-resistant electric wire, containing from 25 to 60 parts by weight of a polyphenylene ether, from 15 to 42 parts by weight of a polypropylene-based resin, from 8 to 27 parts by weight of a styrene-based elastomer, from 5 to 15 parts by weight of a polyamide, and from 1 to 10 parts by weight of an acid-modified polyolefin, in which the polyamide has a melting point of 201° C. or more; and a heat-resistant electric wire using the composition.

Claims

1. A resin composition for a heat-resistant electric wire, the resin composition comprising:

from 25 to 60 parts by weight of a polyphenylene ether;

from 15 to 42 parts by weight of a polypropylene-based resin;

from 8 to 27 parts by weight of a styrene-based elastomer;

from 5 to 15 parts by weight of a polyamide; and

from 1 to 10 parts by weight of an acid-modified polyolefin,

wherein the polyamide has a melting point of 201°

C. or more, and

wherein a sum of the polyphenylene ether, the polypropylene-based resin, the styrene-based elastomer, the polyamide, and the acid-modified polyolefin totals 100 parts by weight.

2. The resin composition for a heat-resistant electric wire according to claim 1,

wherein the melting point of the polyamide is 220°

C. or less.

3. The resin composition for a heat-resistant electric wire according to claim 1, further comprising:

a bromine-based flame retardant in an amount of 8 to 20 parts by weight;

or

a bromine-based flame retardant and a flame retardant aid in a total amount of 8 to 20 parts by weight.

4. The resin composition for a heat-resistant electric wire according to claim 3,

wherein the bromine-based flame retardant is selected from the group consisting of tetrabromobisphenol A, decabromodiphenyl ether, hexabromocyclododecane, bis(tetrabromophthalimide)ethane, TBBA carbonate⋅

oligomer, TTBBA-bis(dibromopropyl ether), BBA epoxyoligomer, brominated polystyrene, bis(pentabromophenyl)ethane, poly(dibromopropyl ether) and hexabromobenzene.

5. The resin composition for a heat-resistant electric wire according to claim 3,

wherein the flame retardant aid is selected from the group consisting of antimony trioxide, antimony tetroxide, antimony pentoxide, zinc nitrate, zinc stannate and zinc sulfide.

6. The resin composition for a heat-resistant electric wire according to claim 1,

wherein the polyphenylene ether is a poly(2,6-dimethyl-1,4-phenylene ether), the polypropylene-based resin is a homopolymer of polypropylene, the styrene-based elastomer is a styrene-ethylene-butylene-styrene copolymer, the polyamide is polyamide 6 or a copolymer of polyamide 6 and polyamide 66, the acid-modified polyolefin is a maleic acid-modified polypropylene, and the total amount of the resins is 100 parts by weight.

7. A heat-resistant electric wire, comprising:

a coating layer formed from the resin composition for a heat-resistant electric wire according to claim 1.

8. A method for producing a heat-resistant electric wire, comprising:

forming a coating layer from the resin composition for a heat-resistant electric wire according to claim 1.