Patent ID: 6686436
Filing Date: 2004-02-03
Classification: A63B,C08G,C09D

Abstract:
A solid golf ball comprising:a solid core; and a cover covering the solid core, wherein the solid core has a diameter of from 39.0 to 41.8 mm and deforms from 2.80 to 4.00 mm by compression on condition that an initial load of 10 kgf is increased to an ultimate load of 130 kgf; the difference in Shore D hardness between the central point and the surface point of the solid core being not less than 15; the cover is made from polyurethane obtained by curing a composition comprising an isocyanate group-terminated urethane prepolymer and an aromatic polyamine compound; and the isocyanate group-terminated urethane prepolymer is one selected from the group consisting of a TDI-polyol type urethane prepolymer, a MDI-polyol type urethane prepolymer and a hydrogenated MDI-polyol type urethane prepolymer and has a residual polyisocyanpte monomer content of not more than 0.1% by mass; and the polyol is one selected from the group consisting of a polytetramethylene ether glycol, a polyester polyol, a lactone polyester polyol, a polycarbonate diol and an acrylic polyol.