Injected shock-resistant polyamide parts

Details Injected shock-resistant polyamide parts Injected shock-resistant polyamide parts

C - Chemistry, Metallurgy

08

L

400/5805

C08L 77/00 (2006.01) C08L 77/02 (2006.01) C08L 77/06 (2006.01)

Patent

CA 2202786

The invention comprises injected parts with a polyamide resin base (A) and at least one ethylene copolymer (B) and an unsaturated epoxide; the copolymer (B) is obtained by copolymerization or by grafting of the epoxide. The copolymer (B) is ideally an ethylene/alkyl (meth)acrylate/glycidyl (meth)acrylate copolymer. The softness index of compositions of (A) and (B) is higher than that of (A) by 0.175 times the percentage by weight of (B).

L'invention concerne des pièces injectées à base de résine polyamide (A) et d'au moins un copolymère (B) de l'éthylène et d'un époxyde insaturé, le copolymère (B) étant obtenu par copolymérisation ou par greffage de l'époxyde. Le copolymère (B) est avantageusement un copolymère éthylène/(méth)acrylate d'alkyle/(méth)acrylate de glycidyle. L'indice de fluidité des compositions de (A) et (B) est supérieur au rapport de l'indice de fluidité de (A) sur 0,175 fois le pourcentage poids de (B).

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