| 摘要 |
A golf ball comprising a core, an inner cover layer, and an outer cover layer, the outer cover layer being formed from a polyurea including a prepolymer and an amine curative. The prepolymer is formed from an aliphatic isocyanate and a secondary polyamine polyether having a formula: where x=1-70; R<SUB>1 </SUB>and R<SUB>2 </SUB>each independently=a C<SUB>1-20 </SUB>alkyl group, phenyl, or a mixture thereof; and R<SUB>3</SUB>-H, CH<SUB>3</SUB>, or a mixture thereof.
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