Modacrylic copolymer composition

C - Chemistry – Metallurgy – 08 – F

Patent

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C08F 220/44 (2006.01) C08F 214/10 (2006.01) C08F 220/46 (2006.01)

Patent

CA 2362205

The present invention relates to a modacrylic copolymer composition comprising acrylonitrile, vinylidene chloride, vinyl acetate, and at least one ionic comonomer. In one embodiment, the modacrylic copolymer composition comprises from about 45 to about 60% acrylonitrile, from about 35 to about 50% vinylidene chloride, from about 0.5 to about 5% vinyl acetate, and up to about 2% of a salt of p-sulfophenyl methallyl ether by weight of the total composition. The copolymer composition of the present invention provides acceptable color while having acceptable flame resistance.

La présente invention concerne une composition copolymère modacrylique comprenant de l'acrylonitrile, du chlorure de vinylidène, de l'acétate de vinyle, et au moins un comonomère ionique. Selon un mode de réalisation, la composition copolymère modacrylique comprend de 45 % environ à 60 % environ d'acrylonitrile, de 35 % environ à 50 % environ de chlorure de vinylidène, de 0,5 % environ à 5 % environ d'acétate de vinyle, et jusqu'à 2 % environ d'un sel de p-sulfophényl-méthallyl-éther, par rapport au poids de la composition totale. La composition copolymère selon la présente invention donne une couleur acceptable tout en présentant une résistance au feu satisfaisante.

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