Golf ball
AssigneeBridgestone Sports Co., Ltd.
InventorsYasushi Ichikawa, Rinya Takesue
Life of this patent
Estimating the term…
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, 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.
Claims4
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), and the material of the cover has a surface hardness of 40 to 80 as measured by use of a D-type durometer, and a restitution elastic modulus of at least 45%:
- (A) a thermoplastic polyurethane material, 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 polyether-ester block copolymer resin (b-2) which is substantially non-reactive with the isocyanate groups.
Dependencies are inferred from the claim text.