Patent ID: 9457233
Filing Date: 2016-10-04
CPC Classification: A63B,B32B,C08K,C08L,Y10T

Claim Text:
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; an outer core layer having a thickness of about 0.02 inches to about 0.15 inches and a second outer surface Shore D hardness greater than the first; an inner cover layer; and an outer cover layer; wherein the outer core layer comprises a thermoplastic material comprising: an acid copolymer of ethylene and an α,β-unsaturated carboxylic acid, optionally including a softening monomer selected from the group consisting of alkyl acrylates and methacrylates; a plasticizer; and a cation source present in an amount sufficient to neutralize from about 80% to about 100% of all acid groups present in the material.