Flame retardant polyolefin wire and cable insulation
AssigneePolytechnic University
InventorsEdward D. Weil, Weiming Zhu
Life of this patent
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Abstract
A flame retardant composition is provided comprising a normally flammable polyolefin or olefin copolymer, and a flame retardant amount of melamine or salt thereof, a polyphenylene oxide and a silicaceous material.
Claims10
A flame-retardant blend comprising a base polymer of a normally flammable polyolefin or olefin copolymer and a flame retardant additive composition, said composition comprising 50 to 150 phr of melamine or salts thereof, 5 to 100 phr of a polyphenylene oxide, and 50 to 150 phr of kaolin.
A flame retardant cable primary insulation comprising a blend of a base polymer of a normally-flammable polyolefin or olefin copolymer and an additive composition of about 5 to 150 phr of melamine, about 5 to 100 phr of a polyphenylene oxide and about 5 to 150 phr of kaolin.
A process for rendering a base polymer made of a polyolefin or olefin copolymer so as to be flame resistant comprising the steps of:
- (a) mixing said polyolefin or olefin copolymers with a flame retardant additive composition, said composition comprising about 5 to 150 phr of melamine, about 5 to 100 phr of polyphenylene oxide and about 5 to 150 phr of kaolin;
- and
- (b) curing said blend by heating or irradiation.
Dependencies are inferred from the claim text.