Compositions for Golf Equipment

Abstract

The present invention is directed to golf balls having at least one layer formed from a polyurea composition. The polyurea is formed by combining a polyurea prepolymer, a polyamine curative, and a tin catalyst. Golf balls of the present invention include one-piece, two-piece, multi-layer, and wound golf balls. The composition may be present in any one or more of a core layer, a cover layer, or an intermediate layer.

1 . A golf ball, comprising:
 a core; and   at least one layer disposed about the core, the layer comprising a polyurea composition formed from a cycloaliphatic polyisocyanate prepolymer, a cycloaliphatic amine curative, and a tin catalyst.   
   
   
       2 . The golf ball of  claim 1 , wherein the polyurea composition has a gel time of greater than 60 seconds: 
   
   
       3 . The golf ball of  claim 1 , wherein the polyurea composition has a gel time of 80 seconds or greater. 
   
   
       4 . The golf ball of  claim 1 , wherein the polyurea composition has a gel time of 100 seconds or greater. 
   
   
       5 . The golf ball of  claim 1 , wherein the catalyst is used in an amount of 0.01% to 1% by weight of the composition. 
   
   
       6 . The golf ball of  claim 1 , wherein the catalyst is used in an amount of 0.05% to 0.75% by weight of the composition. 
   
   
       7 . The golf ball of  claim 1 , wherein the catalyst is present in an amount of 0.1% to 0.5% by weight of the composition. 
   
   
       8 . The golf ball of  claim 1 , wherein the catalyst is dibutyltin dilaurate. 
   
   
       9 . The golf ball of  claim 1 , wherein the amine curative is 4,4′-bis(sec-butylamino)-dicyclohexylmethane.