Patent ID: 8044136
Filing Date: 2011-10-25
Classification: C08K

Abstract:
1. A golf ball comprising a core and a cover and optionally at least one intermediate layer positioned between the core and the cover, wherein the core or the intermediate layer when present comprises or is prepared from a thermoplastic composition, said thermoplastic composition optionally comprising a filler; wherein the thermoplastic composition has a PGA compression greater than 100; and further wherein the thermoplastic composition when formed into a sphere of 1.50 to 1.68 inches in diameter has a coefficient of restitution, said coefficient of restitution being measured by firing the sphere at an initial velocity of 125 feet/second against a steel plate positioned 3 feet from the point where initial velocity is determined and dividing the velocity of rebound from the plate by the initial velocity; wherein the coefficient of restitution is equal to or greater than 0.860 when the thermoplastic composition does not comprise filler; and wherein the coefficient of restitution is equal to or greater than 0.830 when the thermoplastic composition comprises filler, wherein the thermoplastic composition comprises or is prepared from: (a) at least one aliphatic, monofunctional organic acid having 4 to 36 carbon atoms, wherein the longest carbon chain of the acid is optionally substituted with from one to three substituents independently selected from C (b) an ethylene acid copolymer consisting essentially of copolymerized conomoners of ethylene and from 18 to 24 weight % of copolymerized comonomers of at least one C