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.