Patent ID: 6372835
Filing Date: 2002-04-16
Classification: C08G,C08K,C08L

Abstract:
A flame-retardant polyketone resin composition which substantially comprises (1) 40 to 85% by weight of a polyketone resin based on the total weight of the composition and (2) 15 to 60% by weight of magnesium hydroxide particles, based on the total weight of the composition, which have (a) a specific surface area measured by a BET method of 1 to 15 m2/g, (b) an average secondary particle diameter of 0.2 to 5 &mgr;m, and (c) a surface coated with a surface-treating agent,wherein the surface-treating agent is a phosphoric ester represented by the following formula (1) wherein R is an alkyl group having 1 to 24 carbon atoms or an alkenyl group having 2 to 24 carbon atoms, A is an alkylene group having 2 to 4 carbon atoms, n is an integer of 0 to 6, m is 1 or 2, and M is a cation which represents an alkali metal, an alkyl amine having 1 to 4 carbon atoms or an alkanol amine represented by the following formula:â€ƒ(R1)3âˆ’rNâ€”(Bâ€”OH)r wherein R1 is a hydrogen atom or an alkyl group having 1 to 3 carbon atoms, B is an alkylene group having 2 to 4 carbon atoms, and r is an integer of 1 to 3.