Golf Ball having High Surface Friction

Abstract

A golf ball comprising a core and a cover, wherein an outermost surface of the golf ball has a coefficient of friction of greater than 0.6.

1 . A golf ball comprising a solid, polybutadiene-based core and an ionomer-based cover, wherein an outermost surface of the golf ball has a coefficient of friction of from 0.8 to 1.5 and is formed of a cured coating layer comprising a two-component, water-based system including a polymer having at least one isocyanate-reactive functionality and an isocyanate, and wherein the cured coating layer has a Sward hardness of less than 20.  
   
   
       2 . The golf ball of  claim 1 , wherein the outermost surface has a 60° gloss of at least 3.  
   
   
       3 . The golf ball of  claim 1 , wherein the outermost surface has a 60° gloss of 80 to 95.  
   
   
       4 . The golf ball of  claim 1 , wherein the outermost surface is hydrophobic.  
   
   
       5 . The golf ball of  claim 1 , wherein the coating layer has a thickness of 0.0001 inches to 0.01 inches.  
   
   
       6 . The golf ball of  claim 5 , wherein the coating layer is translucent, transparent, or pigmented.  
   
   
       7 . The golf ball of  claim 5 , wherein the coating layer has a Sward hardness of less than 10.  
   
   
       8 . The golf ball of  claim 5 , wherein the coating layer has a Sward hardness of less than 5.  
   
   
       9 . The golf ball of  claim 5 , wherein the coating layer has a solid content by weight of at least 40%.  
   
   
       10 . The golf ball of  claim 5 , wherein the coating layer has a cross hatch adhesion of 90% to 100%.  
   
   
       11 . The golf ball of  claim 1 , wherein the two-component system is thermoset.  
   
   
       12 . A golf ball comprising a solid, polybutadiene-based core and an ionomer-based cover, wherein an outermost surface of the golf ball has a coefficient of friction of from 0.8 to 1.5 and is formed of a cured coating layer having a thickness of 0.0001 inches to 0.01 inches, and wherein the cured coating layer has a Sward hardness of less than 20 and is formed from a two-component, substantially saturated, thermoset polyurethane.  
   
   
       13 . The golf ball of  claim 12 , wherein the polyurethane comprises a UV absorber, a hindered amine light stabilizer, an antioxidant, an optical brightener, a coupling agent, or a combination thereof.  
   
   
       14 . The golf ball of  claim 12 , wherein the Sward hardness is less than 10.  
   
   
       15 . The golf ball of  claim 12 , wherein the Sward hardness is less than 5.  
   
   
       16 . A golf ball comprising a solid, polybutadiene-based core, an ionomer-based cover and a first cured coating with a coefficient of friction of from 0.8 to 1.5 and a Sward hardness of less than 20 disposed about the cover; wherein the first cured coating comprises a two-component, water-based polyurethane; and wherein the golf ball exhibits, in comparison to a second golf ball comprising a second cured coating layer with a second coefficient of friction of 0.6, a spin rate change of less than 15% when struck with a driver at a speed of about 160 ft/sec.  
   
   
       17 . The golf ball of  claim 16 , wherein the coating layer has a 60° gloss of at least 50.  
   
   
       18 . The golf ball of  claim 16 , wherein the coating layer has a 60° gloss of 80 to 95.  
   
   
       19 . The golf ball of  claim 16 , wherein the golf ball, when struck with a full wedge at a speed of about 95 ft/sec, has an elevated launch angle and a spin rate reduction of at least 5% in comparison to the second golf ball.  
   
   
       20 . The golf ball of  claim 16 , wherein the golf ball has an elevated launch angle and a spin rate reduction of at least 10% when struck with a half wedge at a speed of about 53 ft/sec, in comparison to the second golf ball.