| 摘要 |
A golf ball having a cover material made from a polyurea or polyurea/urethane hybrid composition is provided. The polyurea or polyurea/urethane composition is produced by the reaction of an isocyanate blend having an average NCO functionality in the range of 2.05 to 2.35, a polyamine compound, and amine or hydroxyl curing agent. The resulting cover material has many advantages including improved thermal-stability, durability, toughness, and cut/tear-resistance. The preferred isocyanates in the blend include isophorone diisocyanate (“IPDI”); 1,6-hexamethylene diisocyanate (“HDI”); 4,4′-dicyclohexylmethane diisocyanate (“H12 MDI”); 4,4′-diphenylmethane diisocyanate (4,4′-MDI); toluene diisocyanate (“TDI”); and homopolymers and copolymers thereof.
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