Golf ball
AssigneeSRI Sports Limited
InventorsKazuya Kamino, Keiji Ohama, Toshiyuki Tarao
Life of this patent
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Abstract
The object of the present invention is to provide a golf ball which has excellent durability and wear-resistance and provides an excellent shot feeling. The present invention provides a golf ball comprising: a core consisting of a center and at least one intermediate layer covering the center; and a cover covering the core, wherein the cover is formed from a cover composition containing a thermoplastic polyurethane (A), a polyisocyanate compound (B) having at least two isocyanate groups, and a polyhydroxyether (C) as a resin component, wherein the cover composition has a slab hardness from 20 to 55 in shore D hardness, and the cover has a thickness from 0.1 mm to 1.5 mm.
Claims18
A golf ball comprising:
- a core consisting of a center and at least one intermediate layer covering the center;
- and
- a cover covering the core,
- wherein the cover is formed from a cover composition containing a thermoplastic polyurethane (A), a polyisocyanate compound (B) having at least two isocyanate groups, and a polyhydroxyether (C) as a resin component,
- wherein the cover composition has a slab hardness from 20 to 55 in shore D hardness,
- the cover has a thickness from 0.1 mm to 1.5 mm, and the polyhydroxyether (C) has a repeating structural unit represented by Formula (1):
- wherein R1 and R2 are the same or different from each other, and each are a hydrogen atom or a methyl group.
A golf ball comprising:
- a core consisting of a center and at least one intermediate layer covering the center;
- and
- a cover covering the core,
- wherein the cover is formed from a cover composition containing a thermoplastic polyurethane (A), a polyisocyanate compound (B) having at least two isocyanate groups, and a polyhydroxyether (C) represented by the following formula (2) as a resin component, the cover composition has a slab hardness from 20 to 55 in shore D hardness, and the cover has a thickness from 0.1 mm to 1.5 mm,
- wherein an intermediate layer in contact with the cover layer is formed from a resin composition which has a slab hardness from 50 to 75 in shore D hardness, and the intermediate layer in contact with the cover has a thickness ranging from 0.5 mm to 2.3 mm
Dependencies are inferred from the claim text.