Patent ID: 8795570
Filing Date: 2014-08-05
Classification: A63B,B29C,B29L,C08F

Abstract:
1. A method for forming a golf ball cover, the method comprising: forming free radicals from a peroxide material; grafting a vinyl-silane onto an ethylene-octene block copolymer material to form a silane grafted ethylene-octene block copolymer material, wherein grafting comprises compounding the vinyl-silane, the ethylene-octene block copolymer material and free radicals in a twin screw extruder; dry-blending the silane grafted ethylene-octene block copolymer material with a tin catalyst masterbatch to create a cover composition material; injection molding the cover composition material onto a golf ball insert assembly to create a covered golf ball; and moisture curing the covered golf ball in a hot water bath to impart crosslinking through water in combination with the tin catalyst and heat hydrolyzes a plurality of alkoxysilane moieties on the silane grafted ethylene-octene block copolymer that in turn condenses to form siloxane crosslinks in the cover composition material.