US 12,109,458 B2
Golf ball
Takumi Kaneko, Kobe (JP); Takahiro Shigemitsu, Kobe (JP); and Kazuyoshi Shiga, Kobe (JP)
Assigned to SUMITOMO RUBBER INDUSTRIES, LTD., Kobe (JP)
Filed by Sumitomo Rubber Industries, Ltd., Kobe (JP)
Filed on Sep. 10, 2021, as Appl. No. 17/471,713.
Claims priority of application No. 2020-152659 (JP), filed on Sep. 11, 2020.
Prior Publication US 2022/0080267 A1, Mar. 17, 2022
Int. Cl. A63B 37/00 (2006.01); C08F 283/00 (2006.01); C08G 18/04 (2006.01); C08G 18/42 (2006.01); C08G 18/48 (2006.01); C08G 18/66 (2006.01); C08G 18/73 (2006.01); C08G 18/75 (2006.01); C08J 7/056 (2020.01); C08J 7/16 (2006.01); C08J 7/18 (2006.01); C09D 175/04 (2006.01); C09D 175/08 (2006.01); C08G 18/12 (2006.01)
CPC A63B 37/00221 (2020.08) [A63B 37/00222 (2020.08); C08F 283/00 (2013.01); C08G 18/04 (2013.01); C08G 18/4244 (2013.01); C08G 18/4854 (2013.01); C08G 18/6677 (2013.01); C08G 18/73 (2013.01); C08G 18/755 (2013.01); C08J 7/056 (2020.01); C08J 7/16 (2013.01); C08J 7/18 (2013.01); C09D 175/04 (2013.01); C09D 175/08 (2013.01); C08G 18/12 (2013.01)] 15 Claims
 
1. A golf ball comprising a golf ball body and a paint film composed of at least one layer and covering the golf ball body, wherein
a molecular chain of a base resin constituting an outermost layer located at an outermost side of the paint film has a graft chain, and
80 mole % or more of repeating units constituting the graft chain includes any one of repeating units represented by formulae (1) to (4):

OG Complex Work Unit Chemistry
in the formulae (1) to (4), R1 to R5 each independently represent hydrogen, halogen or an organic group.