Patent ID: 7910198

Claim:
A resinous porous article comprising a plurality of resin particles fused to one another and having interconnected holes, wherein said article having interconnected holes is formed by molding the resin particles to cause the resin particles to deform and contact one another, said article further having a pore-forming substance incorporated therein which is an alkali compound, and extracting said pore-forming substance from said molding with a solvent which dissolves said pore-forming substance and does not dissolve said resin particles, wherein part of said pore-forming substance remains in said resinous porous article, wherein oil is impregnated into said interconnected hole wherein said alkali compound is at least one compound selected from among sodium benzoate, sodium acetate, sodium sebacate, sodium triphosphate, sodium pyrophosphate, and potassium carbonate, wherein said resin is an engineering resin, a special engineering resin or a super-engineering resin.