Low compression golf ball

Abstract

Disclosed herein are two-layer and three-layer, low compression golf balls including a low compression single- or dual-layer rubber core and a single cover layer.

What is claimed is: 
     
         1 . A three-layer golf ball consisting essentially of:
 a dual core having an overall compression of 30 or less and consisting of:
 a center having an SCDI compression of from 20 to 79, a center hardness of from 35 Shore C to 52 Shore C, and formed from a first rubber composition; and 
 an outer core layer having an outer surface hardness of from 71 Shore C to 90 Shore C and formed from a second rubber composition; and 
   a cover layer formed from a thermoplastic composition;   wherein the golf ball has a compression of from 25 to 55.   
     
     
         2 . The three-layer golf ball of  claim 1 , wherein the cover layer has a Shore D hardness of greater than 55. 
     
     
         3 . The three-layer golf ball of  claim 1 , wherein the cover layer has a Shore D hardness of greater than 58. 
     
     
         4 . The three-layer golf ball of  claim 1 , wherein the compression of the golf ball is from 30 to 50. 
     
     
         5 . The three-layer golf ball of  claim 1 , wherein the compression of the golf ball is from 40 to 45. 
     
     
         6 . The three-layer golf ball of  claim 1 , wherein the center has a positive hardness gradient wherein the center Shore C hardness of the center is at least 10 units less than the interface Shore C hardness of the center. 
     
     
         7 . The three-layer golf ball of  claim 6 , wherein the dual core has a positive hardness gradient wherein the center Shore C hardness of the center is at least 15 units less than the outer surface Shore C hardness of the outer core layer. 
     
     
         8 . The three-layer golf ball of  claim 1 , wherein the cover layer composition is formed from a composition comprising a first ionomer and a second ionomer. 
     
     
         9 . The three-layer golf ball of  claim 1 , wherein the first ionomer is a partially neutralized ethylene-methacrylic acid copolymer.