Flame retardant resin compositions

C - Chemistry – Metallurgy – 08 – L

Patent

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Details

C08L 77/02 (2006.01) C08J 5/00 (2006.01) C08J 5/10 (2006.01) C08K 5/529 (2006.01) C08L 67/02 (2006.01) C09K 21/14 (2006.01)

Patent

CA 2285044

This invention relates to flame retardants for polyester and polyamide compositions, and specifically relates to compositions containing (1) 30 to 70 weight percent of a polyester or a synthetic, aliphatic polyamide and synthetic aliphatic, aromatic polyamide copolymers or a mixture thereof; (2) 15 to 40 weight percent of glass or mineral reinforcing agent; and (3) a flame retardant of (a) 5 to 45 weight percent of melamine polyphosphate; (b) 15 to 30 weight percent of melamine polyphosphate and up to 10 weight percent of a charring catalyst; (c) 15 to 30 weight percent of melamine polyphosphate, up to 10 weight percent of a charring catalyst and up to 10 weight percent or a char former, wherein all percents by weight are based on the total weight of (1) + (2) + (3) only.

Cette invention porte sur des agents ignifuges pour des compositions polyester et polyamide, et notamment sur des compositions renfermant (1) 30 à 70 % en poids d'un polyester ou d'un polyamide aliphatique, synthétique et de copolymères polyamides aromatiques, aliphatiques, synthétiques ou d'un mélange de ceux-ci; (2) 15 à 40 % en poids de verre ou d'un agent de renforcement minéral; et (3) un agent ignifuge renfermant (a) de 5 à 45 % en poids d'un polyphosphate de mélamine; (b) de 15 à 30 % en poids d'un polyphosphate de mélamine et jusqu'à 10 % en poids d'un catalyseur de carbonisation; (c) 15 à 30 % en poids d'un polyphosphate de mélamine, jusqu'à 10 % en poids d'un catalyseur de carbonisation et jusqu'à 10 % en poids d'un générateur de produit de carbonisation, tous ces pourcentages en poids étant basés uniquement sur le poids total de (1) + (2) + (3).

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