Patent ID: 7273903

Claim:
A golf ball comprising a thermoplastic composition, wherein the thermoplastic composition comprises (a) a bimodal composition consisting essentially of (i) E/X/Y copolymers where E is ethylene, X is derived from a C3 to C8 α,β ethylenically unsaturated carboxylic acid, and Y is a softening comonomer selected from the group consisting of alkyl acrylates and alkyl methacrylates, wherein the alkyl groups have from 1-8 carbon atoms, or ionomers of the E/X/Y copolymers wherein X is about 2-30 wt. % of the E/X/Y copolymer, and Y is 0 to about 35 wt. % of the E/X/Y copolymer; and (ii) 5-50 wt. % based on (i)+(ii) of one or more E/(M)AA copolymers having 3-25 wt. % (M)AA or salts thereof; and, optionally, (b) up to 200 wt. % based on (i)+(ii) of a thermoplastic elastomeric resin selected from the group consisting of copolyetheramides, copolyetheresters, elastomeric polymerolefins, block polystyrene polydiene copolymers, and thermoplastic urethanes; wherein the E/X/Y copolymers have an Mw in the range of 80,000 to 500,000, and the E/(M)AA copolymers have an Mw between 2,000 and 30,000; wherein the acid of (i) and of (ii) is partially neutralized; and further wherein the golf ball has one or more components, and wherein sufficient filler is added to one or more components of the golf ball to adjust the weight of the golf ball to a level meeting the limits set by golfer's governing authority.