Glass reinforced nylon blend with improved knitline strength

Details Glass reinforced nylon blend with improved knitline strength Glass reinforced nylon blend with improved knitline strength

C - Chemistry, Metallurgy

08

L

C08L 77/00 (2006.01)

Patent

CA 2516298

The present invention provides a polymer alloy including from about 40% to about 75% by weight of at least one polamide, from about 10% to about 50% by weight polypropylene, from about 0.01 % to about 1.0% by weight of at least one block copolymer including a vinyl aromatic monomer and a conjugated diene, and also includes an unsaturated dicarboxylic reagent, from about 0.1 % to about 5.0% by weight of at least one block copolymer or terpolymer, wherein the terpolymer may have an unsaturated dicarboxylic reagent grafted thereto, from about 0.0 1% to about 7.5% of a compatibilizing agent, and from about 5% to about 50% by weight of a filler. The alloy of the present invention exhibits improved knitline strength and improved drop impact results compared with prior art fiberglass-reinforced nylon blends.

L'invention concerne un alliage polymère comprenant : entre environ 40 % et environ 75 % en poids d'au moins un polyamide, entre environ 10 % et environ 50 % en poids de polypropylène, entre environ 0,01 % et environ 1,0 % en poids d'au moins un copolymère bloc comprenant un monomère aromatique vinylique et un diène conjugué ; comprenant également un réactif dicarboxylique non saturé, entre environ 0,1 % et environ 5,0 % en poids d'au moins un copolymère bloc ou terpolymère, un réactif dicarboxylique non saturé pouvant être greffé au terpolymère, entre environ 0,01 % et environ 7,5 % d'un agent de compatibilisation et entre environ 5 % et environ 50 % en poids d'une charge. L'alliage selon l'invention présente une meilleure résistance de la ligne de soudure et de meilleurs résultats de résistance au choc au mouton en comparaison avec les mélanges de nylon renforcés de fibres de verre de la technique antérieure.

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