Golf balls with polyurethane covers formed from low-monol content polyols

Abstract

Disclosed herein, in various embodiments, is a golf ball having a polyurethane cover formed from a low-monol content polyol. The low-monol content polyol is preferably a polyether polyol. The golf ball is preferably a three-piece solid golf ball with a core, mantle layer and a cover. A low-monol content is preferably less than 1%. More preferably, the low-monol content is between 0.5% to 1%.

1 . A multi-layer golf ball comprising:
 a core;   an intermediate layer; and,   a polyurethane cover, the polyurethane cover comprising a low-monol content polyol and a diisocyanate, wherein the low-monol content polyol has a monol content of less than 1%.   
   
   
       2 . The multi-layer golf ball of  claim 1 , wherein the ball has an Instron compression of 0.0920 or less. 
   
   
       3 . The multi-layer golf ball of  claim 1 , wherein the cover of the ball has a thickness of 0.050 inches or less. 
   
   
       4 . The multi-layer golf ball of  claim 1 , wherein the cover of the ball has a thickness of 0.025 inches or less. 
   
   
       5 . The multi-layer golf ball of  claim 1 , wherein the cover of the ball has a thickness of from about 0.012 inches to about 0.018 inches. 
   
   
       6 . The multi-layer golf ball of  claim 1 , wherein the cover of the ball has a Shore B hardness of from about 50 to about 100. 
   
   
       7 . The multi-layer golf ball of  claim 1 , wherein the cover of the ball has a Shore B hardness of from about 80 to about 95. 
   
   
       8 . The golf ball of  claim 1 , wherein the polyurethane cover comprises an ultra low monol content poly(propylene glycol). 
   
   
       9 . The golf ball of  claim 1 , wherein the mantle comprises an ionomer or a blend of ionomers. 
   
   
       10 . The golf ball of  claim 9  where the ionomer or blend further comprises a fatty acid or fatty acid metal salt. 
   
   
       11 . The golf ball of  claim 1 , wherein the polyurethane cover comprises an ultra low monol content tri(propylene glycol). 
   
   
       12 . The golf ball of  claim 1 , wherein the cover is coated with a coating composition comprising a white pigment. 
   
   
       13 . The golf ball of  claim 1 , wherein a marking indicia is applied to the exterior surface of the ball. 
   
   
       14 . The golf ball of  claim 1 , wherein said core is produced from a core composition comprising an organic sulfur compound. 
   
   
       15 . The golf ball of  claim 14 , wherein the organic sulfur compound is PCTP or a metal salt thereof. 
   
   
       16 . A multilayer golf ball, comprising:
 a molded rubber core;   an intermediate layer between the cover and the core that has a Shore D hardness measurement of greater than 60;   and a thermosetting polyurethane cover having a thickness of from about 0.010 inches to about 0.050 inches, the thermosetting polyurethane cover formed from a low-monol content polyol, wherein the low-monol content polyol has a monol content of less than 1%.   
   
   
       17 . The multi-layer golf ball of  claim 16 , wherein the ball has an Instron compression from about 0.0800 to about 0.0950. 
   
   
       18 . The multi-layer golf ball of  claim 16 , wherein the cover of the ball has a thickness of 0.025 inches or less. 
   
   
       19 . The multi-layer golf ball of  claim 16 , wherein the cover of the ball has a thickness of from about 0.012 inches to about 0.018 inches. 
   
   
       20 . The multi-layer golf ball of  claim 16 , wherein the cover of the ball has a Shore B hardness of from about 80 to about 95.