Patent ID: 6593443
Filing Date: 2003-07-15
Classification: A63B,C08G

Abstract:
A wound-core golf ball comprisinga center having a diameter of 25 to 35 mm, which consists of an inner core layer having a diameter of 24 to 33 mm and a JIS-A-hardness of 5 to 50, and an outer core layer covering the inner core layer and having a Shore D hardness of 10 to 60; a rubber thread layer covering the center; and a polyurethane cover covering the rubber thread layer, wherein the polyurethane cover has a Shore D hardness of 40 to 65 and is formed by curing a composition including an isocyanate group terminated polyurethane prepolymer containing a residual polyisocyanate monomer in an amount of not more than 0.1 mass %; and an aromatic polyamine compound.