Golf balls having layers based on polyamide and fatty acid amide blends

摘要

Multi-piece golf balls having a solid core of at least one layer and cover of at least one layer are provided. At least one of the layers is formed from a thermoplastic polyamide composition, comprising a blend of about 40 to about 99% by weight polyamide and about 1 to about 60% by weight fatty acid amide. Preferably, the ball has a dual core construction. A rubber composition is preferably used to form the outer core layer and the polyamide composition is preferably used to form the inner core. The flex modulus of the polyamide composition is preferably at least 15% greater than the flex modulus of the rubber composition.

主权项

1. A golf ball, comprising:
a) a dual core having an inner core and outer core layer, the inner core having an outer surface and geometric center and the outer core layer having an outer surface and inner surface; the inner core consisting essentially of a polyamide composition of about 40 to about 99% by weight polyamide and about 11 to about 60% by weight fatty acid amide and the outer core layer comprising a rubber composition,
the polyamide composition having a second flex modulus value; wherein a composition consisting of 100% by weight polyamide has a first flex modulus value, and the second flex modulus of the polyamide composition is at least 10% less than the first flex modulus value and at least 15% greater than the flex modulus of the rubber composition, and wherein the center of the inner core and surface of the outer core layer each has a hardness and the center hardness of the inner core is greater than the surface hardness of the outer core layer; and b) a cover having at least one layer disposed about the dual core.