| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a golf ball having an excellent rebound and excellent scuff resistance. <P>SOLUTION: In the golf ball having a core and a cover of one or more layers, the core is made of a material obtained by molding under heat a rubber composition which includes (a) a base rubber containing polybutadiene having a stress relaxation time (T<SB>80</SB>) of 3.5 or less, (b) an unsaturated carboxylic acid and/or a metal salt thereof, and (c) an organic peroxide, and at least one layer of the cover is made of a material obtained by molding a mixture containing as the essential ingredients (A) a metal ion neutralization product of olefin-unsaturated carboxylic acid random copolymer having a Shore D hardness of at least 60, (B) an unsaturated fatty acid, and (C) a basic inorganic metal compound capable of neutralizing acid groups in the components A and B. Thus, the golf ball has a good rebound, a good feel on impact, and excellent scuff resistance. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
