Golf ball
AssigneeSumitomo Rubber Industries, Ltd.
InventorMasatoshi Yokota
Life of this patent
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Abstract
The invention provides an improved golf ball which exhibits satisfactory ball characteristics, particularly, repulsion property and scuff resistance. The golf ball has a cover made of the polyurethane prepared by curing a urethane prepolymer having an isocyanate group at a terminal thereof with an amine-type curing agent represented by the following general formula: H2N—R1-polyether moiety-R2—NH2 where R1 and R2 are independently hydrocarbon groups each having 1 to 6 carbon atoms. The amine-type curing agent causes curing at such a speed as to ensure a pot life allowing necessary operations to be performed.
Claims17
A golf ball comprising a core, and a polyurethane cover covering the core, wherein
- the polyurethane cover is formed from a cured product prepared by curing a urethane prepolymer having an isocyanate group at a terminal thereof with an amine-type curing agent represented by the following general formula:
- H2N—R1-polyether moiety-R2—NH2
- where R1 and R2 are independently hydrocarbon groups each having 1 to 6 carbon atoms.
A golf ball comprising a core, and a polyurethane cover covering the core, wherein
- the polyurethane cover is formed from a cured product prepared by curing a urethane prepolymer having an isocyanate group at a terminal thereof with an amine-type curing agent represented by the following formula:
- H2N—R1-polyether moiety—R2-NH2
- where R1 and R2 are independently hydrocarbon groups each having 1 to 6 carbon atoms and the polyether moiety is an alkylene oxide group of a linear alkylene glycol selected from the group consisting of ethylene glycol, diethylene glycol, polyethylene glycol, methylene glycol, trirnethylene glycol, and polytetramethylene ether glycol.
A golf ball comprising a core, and a polyurethane cover covering the core, wherein
- the polyurethane cover is formed from a cured product prepared by curing a urethane prepolymer having an isocyanate group at a terminal thereof with an amine-type curing agent represented by the following formula:
- H2N—R1-polyether moiety-R2—NH2
- where R1 and R2 are independently hydrocarbon groups each having 1 to 6 carbon atoms and the polyether moiety is an alkylene oxide group of a branched alkylene glycol selected from the group consisting of propylene glycol, polypropylene glycol, butylene glycol, sec-butyl glycol, hexylene glycol, and neopentyl glycol.
Dependencies are inferred from the claim text.