Patent ID: 6238615
Filing Date: 2001-05-29
Classification: C08J,C08K

Abstract:
An orientated gel molding method of a polyolefin-based resin composition, the method comprisingdissolving at least one dibenzylidene sorbitol compound represented by the following formula (1) in a molten polyolefin resin. ##STR2##wherein R.sup.1 and R.sup.2 are the same or different, and each represent a hydrogen atom, a C.sub.1 -C.sub.4 alkyl group, a C.sub.1 -C.sub.4 alkoxy group or a halogen atom; m and n each represent 1 to 5; p is 0 or 1; when m is 2, the two R.sup.1 's may optionally be taken together with the benzene ring to which they are attached to form a tetralin ring; and when n is 2, the two R.sup.2 's may optionally be taken together with the benzene ring to which they are attached to form a tetralin ring,cooling the molten resin to a temperature not higher than the sol-gel transition temperature during the cooling cycle to give a polyolefin resin composition containing a network of crystals of the dibenzylidene sorbitol compound, andmolding said resin composition at a resin temperature not lower than the melting temperature of the polyolefin resin but not higher than the sol-gel transition temperature during the heating cycle.