Patent ID: 11883720
Assignee: BRIDGESTONE SPORTS CO., LTD.
Field: Macromolecular chemistry, polymers (Chemistry)
Classification: CPC A  C | IPC A  C

Claim 5:
6. A golf ball comprising a core and a cover, wherein the ball has a spin rate and a launch angle on approach shots at a head speed (HS) of 10 m/s that satisfy formulas (1) and (2) below:

Spin W/Spin D≥0.70  (1)

Ang W/Ang D<1.20  (2),

where Spin D is the spin rate (rpm) under dry conditions, Spin W is the spin rate (rpm) under wet conditions, Ang W is the launch angle (°) under wet conditions and Ang D is the launch angle (°) under dry conditions, and wherein the cover has an outermost layer on which a coating layer is formed, which coating layer is formed of a coating composition consisting of a urethane coating containing both a base resin comprising a polyester polyol, an acrylic additive and a solvent, and a curing agent comprising a polyisocyanate.