Golf balls comprising (meth)acrylated amine curatives

Abstract

Golf balls having a core and a layer disposed about the core are disclosed. The layer comprises a polyurea formed from the reaction of an isocyanate and a (meth)acrylated amine. Sports equipment comprising such a polyurea are also disclosed.

1 . A golf ball comprising:
 a) a core   b) a layer disposed about the core, wherein the layer comprises a polyurea fanned from the reaction of an isocyanate and a (meth)acrylated amine.   
   
   
       2 . The golf ball of  claim 1 , wherein the amine comprises diaminodicyclohexylmethane. 
   
   
       3 . The golf ball of  claim 1 , wherein the amine comprises 3,3′-dimethyl-4,4′-diaminodicyclohexyl methane. 
   
   
       4 . The golf ball of  claim 1 , wherein the amine comprises a difunctional, amine terminated polypropylene glycol having an average molecular weight of 4000. 
   
   
       5 . The golf ball of  claim 4 , wherein the amine further comprises a difunctional, amine terminated polyethylene glycol having an average molecular weight of 600. 
   
   
       6 . The golf ball of  claim 1 , wherein the (meth)aerylated amine is prepared by reacting:
 a) a poly(meth)aerylate;   b) an amine; and   c) a mono(meth)aerylate.   
   
   
       7 . The golf ball of  claim 6 , wherein the poly(meth)acrylate comprises polyacrylated and wherein the mono(meth)acrylate comprises monoacrylate. 
   
   
       8 . The golf ball of  claim 7 , wherein the amine comprises diaminodicyclohexylmethane. 
   
   
       9 . The golf ball of  claim 7 , wherein the amine comprises 3,3′dimethyl-4,4′-diaminodicyclohexyl methane. 
   
   
       10 . The golf ball of  claim 7 , wherein the amine comprises a difunctional, amine terminated polypropylene glycol having an average molecular weight of 4000. 
   
   
       11 . The golf ball of  claim 7 , wherein the amine further comprises a difunctional, amine terminated polyethylene glycol having an average weight of 600. 
   
   
       12 . The golf ball of  claim 7 , wherein the amine comprises IPDA. 
   
   
       13 . The golf ball of  claim 7 , wherein the polyacrylate comprises hexanediol diacrylate, the amine comprises IPDA, and the monoacrylate comprises butylacrylate. 
   
   
       14 . The golf ball of  claim 7 , wherein the polyacrylate comprises hexanediol diacrylate, the amine comprises 3,3′-dimethyl-4,4′-diaminodicyclohexyl methane, and the monoacrylate comprises methyl acrylate. 
   
   
       15 . The golf ball of  claim 1 , wherein the layer is a cover layer. 
   
   
       16 . The golf ball of  claim 15 , wherein the cover layer has a thickness of 0.001 inches to 0.125 inches. 
   
   
       17 . The golf ball of  claim 1 , wherein the golf ball further comprises at least one intermediate layer disposed between the core and the layer disposed about the core. 
   
   
       18 . The golf ball of  claim 1 , wherein the polyurea further comprises a colorant. 
   
   
       19 . The golf ball of  claim 1 , wherein the polyurea has a Shore D hardness of 55. 
   
   
       20 . The golf ball of  claim 19 , wherein the layer has a Ts of at least 60, as measured by thermal mechanical analysis. 
   
   
       21 . The golf ball of  claim 1 , wherein the (meth)acrylated amine is prepared by reacting:
 a) a (meth)aerylate;   b) a polyamine; and   c) a dialkyl maleate and/or dialkyl fumarate.   
   
   
       22 . The golf ball of  claim 21 , wherein the amine comprises 3,3′-dimethyl-4,4′-diaminodicyelohexyl methane and the (meth)acrylate comprises hexanediol diacrylate and/or methyl acrylate. 
   
   
       23 . Sports equipment comprising a polyurea formed from the reaction of an isocyanate and a (meth)acrylated amine. 
   
   
       24 . The golf ball of  claim 1 , wherein the golf ball has a Shore D hardness of 38 to 65. 
   
   
       25 . The golf ball of  claim 1 , wherein the isocyanate comprises a prepolymer. 
   
   
       26 . The golf ball of  claim 25 , wherein the prepolymer comprises the reaction product of 4,4′-methylenedicyclohexyl diisocyanate and a difunctional amine terminated polypropylene glycol. 
   
   
       27 . The golf ball of  claim 26 , wherein the glycol has an average molecular weight of 2000. 
   
   
       28 . The golf ball of  claim 26 , wherein the glycol has an average molecular weight of 4000 or greater. 
   
   
       29 . The golf ball of  claim 1 , wherein the (meth)aerylated amine comprises the reaction product of polyetheramine and acrylate. 
   
   
       30 . The golf ball of  claim 29 , wherein the acrylate comprises methyl acrylate.