Golf ball layers formed of polyurethane-based and polyurea-based compositions incorporating block copolymers
First Claim
1. A golf ball comprising a core and a cover, wherein the cover is formed from a polyurethane-based composition comprising a prepolymer, a block copolymer, and a coupling agent, wherein the block copolymer comprises an Ax-By block or an Ax-By-Az block, wherein A comprises an olefin or acrylate, B comprises a diene. and x, y, and z are independently 1 or greater, and wherein the prepolymer is formed from an isocyanate and a polyol.
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Accused Products
Abstract
Golf equipment having improved cut and shear resistance that includes a polyurea-based composition or polyurethane-based composition, preferably saturated and/or water resistant, formed of a prepolymer, a functionalized block copolymer, and optionally further cured or chain extended with a curing agent, where the prepolymer is incorporated at the terminal end of the functionalized block copolymer.
160 Citations
20 Claims
- 1. A golf ball comprising a core and a cover, wherein the cover is formed from a polyurethane-based composition comprising a prepolymer, a block copolymer, and a coupling agent, wherein the block copolymer comprises an Ax-By block or an Ax-By-Az block, wherein A comprises an olefin or acrylate, B comprises a diene. and x, y, and z are independently 1 or greater, and wherein the prepolymer is formed from an isocyanate and a polyol.
- 9. A golf ball comprising a core and a cover, wherein the cover is formed from a polyurea composition comprising a prepolymer, a block copolymer comprising at least one functional group at a terminal end, and a curative, wherein the prepolymer is formed from an isocyanate and a polyamine.
- 15. A golf ball comprising a core and a cover, wherein at least a portion of the golf ball is formed from a polyurea composition formed from a prepolymer, an olefin-diene-olefin block copolymer, and a coupling agent.
Specification