Golf Ball With Improved Durability

Abstract

A golf ball with improved durability is disclosed herein. The golf ball has a mantle layer comprising a blend of ionomers and methyl methacrylate, butadiene, styrene (MBS) with a weight percentage of MBS ranging from 5 to 15 weight percent of the mantle layer.

I claim as my invention the following: 
     
         1 . A golf ball comprising:
 a core composed of a polybutadiene in an amount greater than 60 weight percent, zinc diacrylate in an amount of 10-50 weight percent, zinc oxide in an amount of 1-30 weight percent, zinc stearate in an amount of 1-20 weight percent, peroxide initiator in an amount of 0.1-10 weight percent, color in an amount ranging from 0-10 weight percent, barium sulfate in an amount ranging from 0-20 weight percent, and zinc pentachlorothiophenol in an amount of 0-10% weight percent;   an inner mantle layer;   an outer mantle layer disposed over the inner mantle layer, the outer mantle layer consisting essentially of a first ionomer in an amount ranging from 25 to 60 weight percent of the mantle layer, a second ionomer in an amount ranging from 25 to 60 weight percent of the mantle layer, a third ionomer in an amount ranging from 5 to 20 weight percent of the mantle layer, and a methyl methacrylate, butadiene, styrene (MBS) in an amount ranging from 5 to 15 weight percent of the mantle layer, the outer mantle layer having a thickness ranging from 0.03 inch to 0.07 inch; and   a cover layer disposed over the mantle layer.   
     
     
         2 . The golf ball according to  claim 1  wherein the outer mantle layer has thickness ranging from 0.03 inch to 0.07 inch. 
     
     
         3 . A golf ball comprising:
 an inner core composed of a polybutadiene in an amount greater than 60 weight percent, zinc diacrylate in an amount of 10-50 weight percent, zinc oxide in an amount of 1-30 weight percent, zinc stearate in an amount of 1-20 weight percent, peroxide initiator in an amount of 0.1-10 weight percent, color in an amount ranging from 0-10 weight percent, barium sulfate in an amount ranging from 0-20 weight percent, and zinc pentachlorothiophenol in an amount of 0-10% weight percent;   an outer core disposed over the inner core;   a mantle layer disposed over the outer core, the mantle layer comprising a first ionomer in an amount ranging from 25 to 60 weight percent of the mantle layer, a second ionomer in an amount ranging from 25 to 60 weight percent of the mantle layer, a third ionomer in an amount ranging from 5 to 20 weight percent of the mantle layer, and a methyl methacrylate, butadiene, styrene (MBS) in an amount ranging from 5 to 15 weight percent of the mantle layer; and   a cover layer disposed over the mantle layer.