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US 6,713,588 B2Granted
Golf ball
AssigneeSumitomo Rubber Industries, Ltd.
InventorKazuhisa Fushihara
Life of this patent
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Abstract
The present invention provides a golf ball having enhanced durability of the clear coating film and the mark. The golf ball of the invention comprises: a ball body having an ionomer resin cover; an epoxy coating film formed on the ball body, a polyurethane clear coating film formed on the epoxy coating film, wherein the epoxy coating film is made by curing an epoxy resin with a polyamide curing agent; and the polyurethane clear coating film is made by curing a polyol with an isocyanate curing agent, wherein the polyol is a mixture of a polyester polyol and a polyether polyol.
Claims8
A golf ball comprising:
- a ball body having an ionomer resin cover;
- an epoxy coating film formed on the ball body;
- and
- a polyurethane clear coating film formed on the epoxy coating film, wherein
- the epoxy coating film is made by curing an epoxy resin with a polyamide curing agent, and
- the polyurethane clear coating film is made by curing a polyol with an isocyanate curing agent, wherein the polyol is a mixture of a polyester polyol and a polyether polyol.
3 more elements
Dependencies are inferred from the claim text.