Patent ID: 6048948
Filing Date: 2000-04-11
Classification: C08G,C08L

Abstract:
A method for producing a second solid polymer composite material containing no solvent from a first solid polymer composite material, comprising:(a) providing said first solid polymer composite material comprising a flexible polymer and a rigid oligomer or polymer polymerized in a molten and mixed state in the presence of the flexible polymer with no solvent; and(b) polymerizing said first solid polymer composite material at a temperature greater than a temperature at which said rigid oligomer or polymer can be polymerized and below the glass transition temperature of the rigid oligomer or polymer so as to increase the tensile strength of said first solid polymer composite to form said second solid polymer composite material;wherein the rigid oligomer or polymer forms a rod-like reinforcing material having a cross-sectional diameter of 0.07 .mu.m or less.