Cationic polyurea cover compositions for a multi-layer golf ball

摘要

Golf balls that have at least one layer formed from a cationic polyurea material. In particular, the compositions of the invention, which include a polymer backbone including urea linkages with cationic groups, may be formed from an isocyanate-containing component and an isocyanate-reactive component, at least one of which includes precursor cationic groups, in the presence of an alkylating, quaternizing, or ternarizing agent.

主权项

1. A golf ball comprising a core and a cover, wherein the cover comprises
a polymer comprising:
polyurea prepolymer comprising an isocyanate-containing component and an isocyanate-reactive component,wherein the isocyanate-containing component consists of the reaction product of an isocyanate-containing compound and at least one compound selected from the group consisting of triethyl phosphine, glycerol-α-bromohydrin ternarized with dimethyl sulfide, and mixtures thereof,and wherein the isocyanate-containing component comprises at least one precursor cationic group selected from the group consisting of ≡P, ═S, and mixtures thereof; and a curative comprising:
an amine-terminated curing agent;zinc stearate; anda neutralizing agent having the general formula
QX where Q comprises a benzyl group and X comprises a monovalent anion, and wherein the neutralizing agent is present in an amount sufficient to react with between about 10 percent and about 70 percent of the precursor cationic groups.