Method of Post-Mold Crosslinking Thermoplastic Polyurethane Golf Ball Cover Compositions

摘要

A multi-piece golf ball is manufactured by molding a cover layer and a core layer to form a golf ball preform in a mold. The cover layer has a thermoplastic polyurethane composition which may be crosslinked by ultraviolet radiation. After molding, the golf ball preform is removed from the mold. A UV curable topcoat composition is applied to the golf ball preform. The golf ball preform is then irradiated with ultraviolet radiation under conditions sufficient to both crosslink the crosslinkable thermoplastic polyurethane and cure the UV curable topcoat composition.

主权项

1. A method of preparing a multi-piece golf ball comprising:
providing a core layer; providing a cover layer, wherein the cover layer comprises at least one crosslinkable thermoplastic polyurethane and a UV initiator; molding the cover layer and core layer to form a golf ball preform in a mold; removing the golf ball preform from the mold; applying an ultraviolet curable topcoat composition to the golf ball preform; and irradiating the golf ball preform with ultraviolet radiation under conditions sufficient to crosslink the crosslinkable thermoplastic polyurethane and cure the topcoat composition.