Polyurea covers for golf balls based on cycloaliphatic isocyanates

Abstract

A golf ball having a cover material made from a polyurea composition is provided. In one version, the golf ball includes a polybutadiene core and surrounding cover layer made of a polyurea composition. In another version, the golf ball includes a polybutadiene core, an intermediate casing layer made of an ionomer resin, and outer cover layer made of the polyurea composition. The polyurea composition is the reaction product of a cycloaliphatic isocyanate and amine compound. The diisocyanate is selected from 1,3-bis(isocyanatomethyl)cyclohexane; 1,4-bis(isocyanatomethyl)cyclohexane; and mixtures thereof. The resulting cover material has many advantages including improved durability, toughness, and light-stability.

Dependencies are inferred from the claim text.