Golf ball
AssigneeBridgestone Sports Co., Ltd.
InventorsEiji Yamanaka, Daisuke Arai
Life of this patent
Estimating the term…
Abstract
A golf ball includes a core and a cover. The core is formed of a material molded under heat from a rubber composition. The rubber composition includes components (A) through (C). The components (A) through (C) are (A) a base rubber, (B) an organic peroxide, and (C) a water providing agent. The water providing agent releases water at a vulcanization temperature at which the rubber composition is vulcanized. The dissociation rate of water of the water providing agent in the case of heating the water providing agent up to the vulcanization temperature of the rubber composition is 60% by mass or more.
Claims8
A golf ball, comprising:
- a core;
- and
- a cover,
- wherein the core is formed of a material molded under heat from a rubber composition,
- the rubber composition including components (A) through (C), where the components (A) through (C) are
- (A) a base rubber,
- (B) an organic peroxide, and
- (C) a water providing agent, and
- wherein when the rubber composition is kneaded at a kneading temperature and is thereafter vulcanized at a vulcanization temperature, a dissociation rate of the water of the water providing agent in a ease of heating the water providing agent up to the kneading temperature is 60% by mass or less, the water providing agent releases water at the vulcanization temperature during the vulcanization, and the dissociation rate of the water of the water providing agent in a case of heating the water providing agent up to the vulcanization temperature is 60% by mass or more.
Dependencies are inferred from the claim text.