Patent ID: 9101796
Filing Date: 2015-08-11
Classification: A63B,C08G

Abstract:
1. A golf ball comprising: a golf ball precursor, the precursor comprising at least one preselected golf ball layer but not an outer cover layer, and an outer cover layer that: (1) comprises a moisture-cured, crosslinked, thermoplastic polyurethane elastomer formed by reacting a mixture of (a) an unsaturated diol having two primary hydroxyl groups and at least one allyl ether group of the formula in which R 1 is a substituted or unsubstituted alkyl group, substituted or unsubstituted aryl group, substituted or unsubstituted alkyl-aryl group, substituted or unsubstituted ether group, substituted or unsubstituted ester group, a combination of these, or H, and optionally includes an unsaturated bond in any main chain or side chain of any group; R 2 comprises an allyl group optionally attached by a substituted or unsubstituted alkylene group, substituted or unsubstituted arylene group, substituted or unsubstituted alkylarylene group, substituted or unsubstituted ether group, or substituted or unsubstituted ester group; and x and y are integers independently having a value from 1 to 10, (b) a polyisocyanate, (c) a polyol having a molecular weight between about 500 and about 4000, and—optionally (d) a chain extender having at least two isocyanate-reactive sites and a molecular weight less than about 450; wherein a free radical initiator induces crosslinking of the allyl group and, if present, the optional unsaturated bond of R 1 , the mixture having an NCO index of from about 1.06 to about 1.18; and (2) has a 100% modulus of from about 80 to about 130 kg/cm