Golf ball
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United States of America Patent
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Apr 30, 2019
Grant Date -
Jul 4, 2013
app pub date -
Nov 2, 2012
filing date -
Dec 28, 2011
priority date (Note) -
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status (Latency Note)
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Abstract
A golf ball 2 includes a core 4, amid layer 6, a reinforcing layer 8, and a cover 10. The core 4 includes a center 12 and an envelope layer 14. The envelope layer 14 is formed by a rubber composition being crosslinked. The rubber composition includes a base rubber (a), a co-crosslinking agent (b), a crosslinking initiator (c), and an acid and/or a salt (d). The co-crosslinking agent (b) is:
- (b1) an α,β-unsaturated carboxylic acid having 3 to 8 carbon atoms; or(b2) a metal salt of an α,β-unsaturated carboxylic acid having 3 to 8 carbon atoms.
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