Patent ID: 6130296
Filing Date: 2000-10-10
Classification: A63B,C08L

Abstract:
A golf ball comprising a core and a cover covering the core, whereinthe cover contains (A) an ionomer, prepared by neutralizing a terpolymer of ethylene, acrylic or methacrylic acid and an acrylic ester with magnesium ion, and (B) both an ethylene-methacrylic acid copolymer ionomer neutralized with sodium ion and an ethylene-methacrylic acid copolymer ionomer neutralized with zinc ion,the ionomer A has a Shore D scale hardness of from 20 to 50 and a stiffness modulus of 10 to 50 MPa,a weight ratio of ionomer A: ionomer B is within the range of from 85:15 to 20:80, andthe cover has a Shore D scale hardness of from 35 to 60.