Patent ID: 7906575
Filing Date: 2011-03-15
Classification: A63B,C08K

Abstract:
1. A molded and crosslinked rubber material for golf balls which is obtained by molding and crosslinking a rubber composition comprising rubber and rubber compounding ingredients, including a base rubber, a filler and an organic peroxide, into a spherical body of one or more layers, wherein a monomer is impregnated into the molded and crosslinked rubber material; one or both of the following chemical reactions is induced: the depth of impregnation by the monomer from a surface of the molded and crosslinked rubber material to the interior thereof is at least 0.3 mm; the monomer is at least one compound selected from the group consisting of acrylic acid, methylacrylic acid, and alkyl esters, amino group-containing esters, aliphatic ring-containing esters, aromatic ring-containing esters, vinyl group-containing esters, alkoxy group-containing esters, and carboxylic acid-containing esters thereof; a metal oxide is used as at least one of the filler; and the amount of deflection by the monomer-impregnated molded and heated material when subjected to a load of 980 N (100 kg) is from 2.0 to 7.0 mm.