Multi-piece solid golf ball

Details Multi-piece solid golf ball Multi-piece solid golf ball

2006-10-10

2006-10-10

Gorden, Raeann (Department: 3711)

Games using tangible projectile

Golf

Ball

Reexamination Certificate

active

07118494

ABSTRACT:
A multi-piece solid golf ball composed of a solid core, at least one intermediate layer, and a cover is characterized in that the core is made of a molded and vulcanized material obtained by vulcanizing a rubber composition containing (A) a base rubber which includes (a-1) a methacryloxy- and/or acryloxy-modified silicone polymer, and containing also an unsaturated carboxylic acid and/or a metal salt thereof, an organic peroxide and an inorganic filler, and has a diameter of 30 to 40 mm and a deflection under a 980 N (100 kg) load of 2.5 to 6.0 mm: the intermediate layer is made primarily of a thermoplastic resin and has a thickness of 0.5 to 2.5 mm and a surface Shore D hardness of 45 to 75; and the cover has a thickness of 0.2 to 2.5 mm and a surface Shore D hardness of 40 to 63 which is lower than the surface Shore D hardness of the intermediate layer. The golf ball has a deflection under a 980 N (100 kg) load of 2.0 to 4.0 mm.

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