Patent 7709590 was granted and assigned to Acushnet (company) on May, 2010 by the United States Patent and Trademark Office.
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: