Patent 7550549 was granted and assigned to Acushnet (company) on June, 2009 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 caprolactone-free prepolymer of an aliphatic isocyanate mixture comprising dimerized uretdione of HDI and trimerized isocyanurate of HDI (or, optionally, trimerized biuret of HDI) and a first amount of modified polyoxypropylene diamine having a formula: