Golf ball
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United States of America Patent
Stats
-
Feb 25, 1997
Grant Date -
N/A
app pub date -
Sep 20, 1995
filing date -
Sep 20, 1994
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
It is a main object of the present invention to impart a high impact resilience to a thread wound golf ball using a liquid center wherein a center bag is filled with a liquid, thereby improving a flying distance, while maintaining a good hit feeling and control properties. The center bag of the liquid center is made of a crosslinked rubber obtained from a rubber composition comprising: (a) a rubber component containing a mixture of 10 to 80% by weight of cis-1,4-polybutadiene and 90 to 20% by weight of a natural rubber or cis-isoprene rubber as a base rubber (b) either a metal salt of an unsaturated carboxylic acid selected from the group consisting of acrylic acid and methacrylic acid, or a combination of the unsaturated carboxylic acid and metal oxide forming a metal salt with the unsaturated carboxylic acid, and (c) a peroxide crosslinking agent, the component (b) being present in an amount 3 to 20 parts by weight based on 100 parts by weight of the component (a) when calculated in terms of an amount of the unsaturated carboxylic acid.
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