Patent ID: 9616296
Date: 2017-04-11
CPC Classifications: A63B,C08L,Y10T

Claim:
1. A golf ball comprising: an inner core layer comprising a thermoset rubber composition and having a first outer surface Shore D hardness and an outer diameter of about 1.0 inch to about 1.6 inches; a thermoplastic outer core layer having a second outer surface Shore D hardness, and comprising a copolymer of ethylene and an α,β-unsaturated carboxylic acid, a magnesium salt of oleic acid, and sufficient cation source to fully-neutralize the acid groups of the copolymer; an inner cover layer; and an outer cover layer; wherein the first outer surface Shore D hardness is less than the second outer surface Shore D hardness and the outer core layer has a thickness of about 0.02 inches to about 0.150 inches.