Golf ball layer compositions comprising modified amine curing agents
View Patent ↗Polyurethane-based and polyurea-based compositions including modified amine curing agents for use in golf ball layers where modified amine curing agent of the invention allows control of the reaction rate by providing a composition with both primary and secondary amine linkages.
1. A golf ball comprising a core and a cover, wherein at least one of the core and cover is formed from a composition comprising a polyurea prepolymer and a curing agent consisting essentially of a compound having the formula.
2. The golf ball of claim 1 , wherein the composition is substantially free of urethane linkages.
3. The golf ball of claim 1 , wherein the polyurea prepolymer comprises the reaction product of an isocyanate and an amine-terminated compound.
4. The golf ball of claim 1 , wherein the composition is thermoset.
5. The golf ball of claim 1 , wherein the composition is thermoplastic.
6. The golf ball of claim 1 , wherein the cover of the golf ball is formed from the composition.
7. A golf ball comprising:
a core; and
a cover, wherein the cover comprises a composition formed from a prepolymer and a curing agent, wherein the curing agent consists essentially of a compound having the formula
8. The golf ball of claim 7 , wherein the prepolymer comprises the reaction product of an amine-terminated compound and an isocyanate, and wherein the amine-terminated compound is selected from the group consisting of amine-terminated hydrocarbons, amine-terminated polyethers, amine-terminated polyesters, amine-terminated polycaprolactones, amine-terminated polycarbonates, amine-terminated polyamides, and mixtures thereof.
9. The golf ball of claim 7 , wherein the cover has a thickness of about 0.02 inches to about 0.035 inches.
10. The golf ball of claim 7 , wherein the golf ball further comprises a layer disposed between the core and the cover, and wherein the layer has a first Shore D hardness and the cover has a second Shore D hardness, and wherein the ratio of second Shore D hardness to the first Shore D hardness is about 0.7 or less.