The present invention is directed to a golf ball that contains an interpenetrating polymer network, or IPN, including at least two polymeric components. These IPNs may be present in any golf ball layer, although in an intermediate or cover layer in one preferred embodiment. The present invention is also...http://www.google.fr/patents/US7429220?utm_source=gb-gplus-shareBrevet US7429220 - Golf balls containing interpenetrating polymer networks