| 摘要 |
An insert for a golf club, and method of forming said insert, comprising a material formed from the conversion reaction of an amount of polybutadiene, a free radical source, and a cis-to-trans catalyst, which reaction occurs at a sufficient temperature to form a polybutadiene reaction product which comprises an amount of trans-polybutadiene greater than the amount of trans-polybutadiene present before the conversion reaction. Further, a golf club having a toe and an opposite heel, a sole portion, and an opposite top portion, a forwardly facing exposed strike face and an opposite rearwardly facing exposed back face portion, comprising a recess defined in the strike face, the recess having a bottom surface spaced from the back face portion and a side wall surface extending between the bottom surface and the strike face for disposing the insert.
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