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US 2006/0131053 A1Published application
Flame retardant electrical wire
OwnerHiroshi Kubo, Vijay Mhetar +4inventors
InventorsHiroshi Kubo, Vijay Mhetar, Vijay Rajamani, Sho Sato, Xiangyang Tai, Weiguang Yao
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Abstract
An electrical wire comprising a conductor and a covering disposed over the conductor. The covering comprises a thermoplastic composition. The thermoplastic composition comprises a poly(arylene ether), a high density polyethylene, a block copolymer; and organic phosphate ester flame retardant.
Claims21
An electrical wire comprising:
- a conductor, and
- a covering disposed over the conductor wherein the covering comprises a thermoplastic composition and the thermoplastic composition comprises:
- (i) a poly(arylene ether);
- (ii) a high density polyethylene;
- (iii) a block copolymer;
- and
- (iv) an organic phosphate ester flame retardant,
- wherein the electrical wire has an average flame out time less than or equal to 10 seconds based on ten electrical wire samples having a conductor size of 0.2 square millimeters and a covering thickness of 0.2 millimeters tested according to ISO 6722 for conductor sizes less than or equal to 2.5 millimeters.
5 more elements
An electrical wire comprising:
- a conductor, and
- a covering disposed over the conductor wherein the covering comprises a thermoplastic composition and the thermoplastic composition comprises:
- (i) a poly(arylene ether);
- (ii) a high density polyethylene;
- (iii) a block copolymer;
- and
- (iv) an organic phosphate ester flame retardant, wherein the block copolymer has a weighted average aryl alkylene content greater than or equal to 15 weight percent.
4 more elements
An electrical wire comprising:
- a conductor, and
- a covering disposed over the conductor wherein the covering comprises a thermoplastic composition and the thermoplastic composition consists essentially of:
- (i) a poly(arylene ether);
- (ii) a high density polyethylene;
- (iii) a first block copolymer;
- (iv) a second block copolymer;
- (v) an organic phosphate ester flame retardant,
- wherein the poly(arylene ether) has an initial intrinsic viscosity greater than 0.35 dl/g, as measured in chloroform at 25° C.,
- wherein the high density polyethylene having a melting temperature greater than or equal to 125° C. and a melt flow rate of 0.7 to 15,
- wherein the first block copolymer has an aryl alkylene content greater than or equal to 50 weight percent based on the total weight of the first block copolymer,
- wherein the second block copolymer has an aryl alkylene content less than or equal to 50 weight percent based on the total weight of the second block copolymer.
8 more elements
A thermoplastic composition useful in a covering disposed over a conductor in an electrical wire comprises:
- (i) a poly(arylene ether);
- (ii) a high density polyethylene;
- (iii) a block copolymer;
- and
- (iv) an organic phosphate ester flame retardant,
- wherein the electrical wire has an average flame out time less than or equal to 10 seconds based on ten test wires having a conductor size of 0.2 square millimeters and a covering thickness of 0.2 millimeters tested according to ISO 6722 for conductor sizes less than or equal to 2.5 millimeters and all ten test wires have a flame out time less than 70 seconds.
3 more elements
Dependencies are inferred from the claim text.