CPC A63B 37/0037 (2013.01) [A63B 37/003 (2013.01); A63B 37/0041 (2013.01); A63B 37/0047 (2013.01); A63B 37/0075 (2013.01); A63B 37/0096 (2013.01); A63B 37/00221 (2020.08); A63B 37/00222 (2020.08); C08G 18/10 (2013.01); C08G 18/3203 (2013.01); C08G 18/4854 (2013.01); C08G 18/6677 (2013.01); C08G 18/73 (2013.01); C08K 7/26 (2013.01); C08L 75/04 (2013.01); C09D 7/61 (2018.01); C09D 175/08 (2013.01); C08G 18/12 (2013.01); C08G 18/755 (2013.01); C08K 3/34 (2013.01); C08K 3/36 (2013.01)] | 19 Claims |
1. A golf ball comprising a golf ball body and a paint film composed of at least one layer and formed on a surface of the golf ball body,
wherein an outermost layer of the paint film located at the outermost layer of the golf ball contains a base resin and a porous filler,
the base resin contains a polyurethane obtained by a reaction between (A) a polyisocyanate composition and (B) a polyol composition containing a urethane polyol as a polyol component,
the porous filler contains SiO2 in an amount of 50 mass % or more and 95 mass % or less as a constituent component, and
a loss tangent (tanδ) of the outermost layer of the paint film measured with a dynamic viscoelasticity measuring apparatus under following conditions has a peak temperature in a range of from −40° C. to 40° C.:
<measurement conditions>
measuring mode: tensile mode
measuring temperature: −100° C. to 150° C.
temperature increasing rate: 4° C./min
oscillation frequency: 10 Hz
measuring strain: 0.1%.
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