Patent ID: 6534167
Filing Date: 2003-03-18
Classification: C08J,C08L,Y10T

Abstract:
A powder having a sphere-reduced average particle diameter of 50 to 200 &mgr;m, for powder molding, comprising (A) to (E) described below:(A) a peroxide-crosslinkable olefin-based polymer having a melt flow rate measured under the conditions of a load of 2.16 kgf and a temperature of 190Â° C. according to JIS K7210 of 1 g/10 min. or more, selected from the group consisting of low density polyethylene, high density polyethylene, and an ethylene-based copolymer, wherein a comonomer in the ethylene-based copolymer is selected from the group consisting of an &agr;-olefin having 3-12 carbon atoms, an ethylenically &agr;&bgr;unsaturated carboxylic acid, an ester of an alkyl having 1 to 12 carbon atoms of an ethylenically &agr;, &bgr;-unsaturated carboxylic acid, a carboxylic acid vinyl ester, a vinyl ketone, and a glycidyl ester of an ethylenically &agr;, &bgr;-unsaturated carboxylic acid; (B) 0.1 to 10 parts by weight of a peroxide having a temperature for obtaining a half life of 10 hours of 100Â° C. or more, per 100 parts by weight of (A); (C) 0.1 to 7 parts by weight of a crosslinking aid per 100 parts by weight of (A); (D) 0.1 to 20 parts by weight of thermal decomposition type foaming agent per 100 parts by weight of (A); and (E) 0.1 to 10 parts by weight of a foaming aid per 100 parts by weight of (A).