Golf balls comprising a plasticized polyurethane layer
View Patent ↗A golf ball comprising a core and a cover layer, wherein at least one of the core or cover layer comprises a plasticized polyurethane composition comprising at least one polyurethane and at least one plasticizer.
1. A golf ball comprising a core and a cover, wherein the core comprises:
an inner core layer formed from a rubber composition, and
an outer core layer formed from a composition comprising a polyurethane and from 2 wt % to 50 wt %, based on the total weight of the outer core layer composition, of a carbonate ester plasticizer selected from the group consisting of propylene carbonate, ethylene carbonate, and mixtures thereof;
wherein the surface hardness of the outer core layer is greater than the center hardness of the inner core layer.
2. The golf ball of claim 1 , wherein the plasticizer is present in an amount of from 3 wt % to 40 wt %, based on the total weight of the outer core layer composition.
3. The golf ball of claim 1 , wherein the outer core layer composition is a thermosetting composition.
4. The golf ball of claim 1 , wherein the outer core layer composition is a thermoplastic composition.