Vulcanized thread rubber composition and golf ball using the same
AssigneeSumitomo Rubber Industries, Ltd.
InventorKiyoto Maruoka
Life of this patent
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Abstract
A thread rubber exhibiting good impact resilience in an elongated state, and a golf ball using such thread rubber are provided. The vulcanized thread rubber composition is obtained by vulcanizing a thread rubber composition including at least 50 wt % of polyisoprene rubber having a cis 1,4 bond content of 80-95% and a trans 1,4 bond content of 2-4% within a rubber component. In the vulcanizate, a ratio of a crosslinked density of polysulfide bonds with respect to a total crosslinked density is more than 70%. The golf ball is made using this vulcanized thread rubber composition.
Claims7
A vulcanized thread rubber composition obtained by vulcanizing a thread rubber composition including at least 50 wt % of polyisoprene rubber having a cis 1,4 bond content of from 80% to 95% and a trans 1,4 bond content of from 2% to 4% within a rubber component, wherein a ratio of a crosslinked density of polysulfide bonds with respect to a total crosslinked density in the vulcanizate is more than 70%.
A golf ball obtained by elongating a vulcanized thread rubber composition for winding around a center to form a core material, and enveloping the core material with a cover,
- wherein said vulcanized thread rubber composition is obtained by vulcanizing a thread rubber composition including at least 50 wt % of polyisoprene rubber having a cis 1,4 bond content of from 80% to 95% and a trans 1,4 bond content of from 2% to 4% within a rubber component, and a ratio of a crosslinked density of polysulfide bonds with respect to a total crosslinked density in the vulcanizate is more than 70%.
Dependencies are inferred from the claim text.