Golf ball resin composition and golf ball

摘要

An object of the present invention is to provide a golf ball resin composition excellent in resilience. Another object of the present invention is to provide a golf ball excellent in a shot feeling and resilience. The golf ball resin composition of the present invention is characterized in that a storage modulus E′ (Pa) and a loss modulus E″ (Pa) satisfy a following expression;
log(E′/E″2)≧−6.08
when measured at the conditions of the temperature of 12° C., the oscillation frequency of 10 Hz, and a strain of 0.05% in a tensile mode using a dynamic viscoelasticity measuring apparatus.

主权项

1. A golf ball resin composition characterized in that a storage modulus E′ (Pa) and a loss modulus E″ (Pa) satisfy a following expression;
log (E′/E″2)≧−6.08when measured at the conditions of a temperature of 12° C., an oscillation frequency of 10 Hz, and a strain of 0.05% in a tensile mode using a dynamic viscoelasticity measuring apparatus, and
the golf ball resin composition comprises:
(A) at least one resin component selected from the group consisting of (a-1) a binary copolymer composed of an olefin and an α,β-unsaturated carboxylic acid having 3 to 8 carbon atoms; (a-2) an ionomer resin consisting of a metal ion-neutralized product of a binary copolymer composed of an olefin and an α,β-unsaturated carboxylic acid having 3 to 8 carbon atoms; (a-3) a ternary copolymer composed of an olefin, an α,β-unsaturated carboxylic acid having 3 to 8 carbon atoms, and an α,β-unsaturated carboxylic acid ester; and (a-4) an ionomer resin consisting of a metal ion-neutralized product of a ternary copolymer composed of an olefin, an α,β-unsaturated carboxylic acid having 3 to 8 carbon atoms, and an α,β-unsaturated carboxylic acid ester; and(B) a metal salt of a fatty acid in an amount ranging from 25 parts to 100 parts by mass, with respect to 100 parts by mass of (A) the resin component.