COVER COMPOSITION FOR GOLF BALL

摘要

PURPOSE:To obtain a cover composition having excellent moldability and giving a golf ball having excellent spinning characteristics and durable to the impact with a club such as iron. CONSTITUTION:This cover composition for golf ball is composed of (a) 70-95wt.% of sodium salt or zinc salt of an ethylene-unsaturated carboxylic acid-unsaturated carboxylic acid ester terpolymer or their blend and (b) 30-5wt.% of a sodium salt or zinc salt of an ethylene-unsaturated carboxylic acid copolymer or an ethylene-unsaturated carboxylic acid-unsaturated carboxylic acid ester terpolymer or their blend having an M.F.R of >=4. The composition gives a cured product having a JIS-C hardness of 55-80 and a 10% strain tensile stress of 40-140kg/cm<2>.