Patent ID: 9657153
Date: 2017-05-23
CPC Classifications: C08G,C08J,C08L,G03G

Claim:
1. A method for producing a resin composition having a porous structure in which 80% to 94% of a total porosity is comprised of independent porosities, the independent porosities having walls having no opening between adjacent porosities, the method comprising: molding a resin solution having a viscosity of 10,000 cP to 1,000,000 cP; and removing a solvent of the resin solution by a phase separation method to perform porosification, wherein the porous structure has a mean porosity size of 0.01 μm to 0.9 μm, and wherein not less than 80% of the total porosity has a porosity size within ±30% of the mean porosity size.