Golf ball
AssigneeBridgestone Sports Co., Ltd.
InventorsYasushi Ichikawa, Rinya Takesue
Life of this patent
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Abstract
Disclosed is a golf ball having a cover formed from a thermoplastic polyurethane material which can be recycled for molding, which exhibits high restitution, and which exhibits excellent scuff resistance. The cover is formed from a composition (C) containing, as predominant components, the following components (A) and (B): (A) a thermoplastic polyurethane material having a restitution elastic modulus of at least 40% and containing, as a polymeric polyol, a polyether polyol having an average molecular weight of at least 1,500, and (B) an isocyanate mixture in which an isocyanate compound (b-1) having at least two isocyanate groups serving as functional groups in the molecule is dispersed in a thermoplastic resin (b-2) which is substantially non-reactive with the isocyanate groups.
Claims9
A golf ball comprising a core and a cover therefor, wherein the cover is formed from a composition (C) containing, as predominant components, the following components (A) and (B):
- (A) a thermoplastic polyurethane material having a restitution elastic modulus of at least 40% and containing, as a polymeric polyol, a polyether polyol having an average molecular weight of at least 1,500, and
- (B) an isocyanate mixture in which an isocyanate compound (b-1) having at least two isocyanate groups serving as functional groups in the molecule is dispersed in a thermoplastic polyetherester resin (b-2) which is substantially non-reactive with the isocyanate groups.
Dependencies are inferred from the claim text.