Polyurethane material for two and three piece golf balls and...

Games using tangible projectile – Golf – Ball

Reexamination Certificate

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C156S146000, C264S259000, C264S260000, C264S271100, C264S275000, C264S277000, C264S279000, C264S279100, C473S351000, C473S356000, C473S357000, C473S365000, C473S371000, C473S377000, C528S061000, C528S064000, C528S067000, C528S076000

Reexamination Certificate

active

09137393

ABSTRACT:
A novel composition useful for golf ball covers that comprises a blend of a dilsocyanate/polyol polyurethane prepolymer with a curing agent comprising a blend of slow-reacting diamine with a fast-reacting diamine such as dimethylthio 2,4-toluenediamine and diethyl 2,4-toluenediamine, respectively. A golf ball cover made with this composition exhibits the characteristic feel and playability of a balata cover with superior durability characteristics (cut and shear resistance) which exceed those of a balata or ionomer cover.

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