Golf ball compositions

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2008-07-08

2011-10-04

Buttner, David (Department: 1765)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

C524S338000, C524S347000, C525S257000, C525S274000, C473S374000, C473S376000

Reexamination Certificate

active

08030383

ABSTRACT:
Golf balls comprising a core and a cover are disclosed. The core is a dual- or multi-layer core, wherein at least one layer is formed from a rubber composition comprising a base rubber and a quinhydrone. The core layer formed from such rubber composition has a positive hardness gradient such that the difference between the layer's outer surface hardness and inner surface hardness is 5 Shore C units or greater.

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