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US 2003/0114565 A1Published application
Soft and resilient ethylene copolymers and their use in golf balls
OwnerJohn Chu Chen, James Kenneth Weddellinventors
Life of this patent
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Abstract
Thermoplastic ionomer copolymers having high resilience (high coefficient of restitution) and softness (low Atti compressions) made by at least partially neutralizing ethylene/carboxylic acid/alkyl (meth)acrylate copolymers and their use in golf ball components. These soft, resilient ionomers can be blended, for example, with fatty acid salts.
Claims42
At least one E/X/Y copolymer where E is ethylene, X is a C3 to C8 α,β ethylenically unsaturated carboxylic acid, and Y is a softening comonomer selected from alkyl acrylate and alkyl methacrylate wherein the alkyl groups have from 1-8 carbon atoms, wherein
- a. X is about 2-30 wt. % of the E/X/Y copolymer, and is at least partially neutralized by one or more alkali metal, transition metal, or alkaline earth metal cation
- b. Y is about 17-40 wt. % of the E/X/Y copolymer, and
- c. the copolymer has a melt index and a degree of neutralization such that the copolymer has an Atti Compression and a Coefficient of Restitution that each, independently, falls within area A1- A2-N of FIG. 1.
Dependencies are inferred from the claim text.