Callaway Golf Company

Val J Cupples

David M Bartels

Steven S Ogg

Pijush K Dewanjee

Humayun Khan

A curative blend for a thermosetting polyurethane material that allows for a polyurethane material with greater durability is disclosed herein. The curative blend is composed of 4,4'-methylenebis-(2,6-diethyl)-aniline and a second curing agent selected from the group consisting of N,N&#x2032;-bis-alkyl-p-phenylenediamine, N,N&#x2032;-dialkylamino-diphenylmethane with tetrapropoxylated ethylenediamine and an aliphatic diamine. A preferred polyurethane prepolymer is polytetramethylene ether glycol terminated toluene diisocyanate prepolymer. The thermosetting polyurethane is preferably utilized as a cover for a golf ball. The cover is preferably formed over a core and boundary layer.

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Canyon Lake, CA, United States of America

Val J Cupples