Patent ID: 6392002
Filing Date: 2002-05-21
Classification: A63B,C08G,C09D

Abstract:
A golf ball comprising a center, a cover, and optionally, at least one intermediate layer disposed between the center and the cover, wherein at least one of the center, the cover, and the at least one intermediate layer is formed with a polyurethane composition comprising a reaction product of:a prepolymer comprising para-phenylene diisocyanate and at least one polyol selected from the group consisting of polyether polyols having the structure: where R1 and R2 are straight or branched hydrocarbon chains, each containing from 1 to 20 carbon atoms, and n ranges from 1 to about 45;polyester polyols having the structure: where R1 and R2 are straight or branched hydrocarbon chains, each containing from 1 to 20 carbon atoms, and n ranges from 1 to about 25;polycaprolactone polyols having the structure: where R1 is a straight or branched hydrocarbon chain containing from 1 to 20 carbon atoms, and n ranges from 1 to about 20; andpolycarbonate polyols having the structure: where R1 is predominantly bisphenol A units -(p-C6H4)â€”C(CH3)2-(p-C6H4)â€” or derivatives thereof, and n is the chain length and ranges from 1 to about 20; andat least one of a hydroxy-terminated curing agent selected from the group consisting of 1,3-bis(2-hydroxyethoxy)benzene and 1,3-bis-[2-(2-hydroxyethoxy)ethoxy]benzene, and 1,3-bis-{2-[2-(2-hydroxyethoxy)ethoxy]ethoxy}benzene; resorcinol-di-(&bgr;-hydroxyethyl) ether; hydroquinone-di-(&bgr;-hydroxyethyl)ether; ethylene glycol; diethylene glycol; polyethylene glycol; polytetramethylene ether glycol having average molecular weights between about 250 to 4000; and mixtures thereof or an amine curing agent.