Patent Number: 6,569,034

Title: Golf ball having a polyurethane cover

Abstract: A golf ball having a thermosetting polyurethane cover composed of a blend of polyurethane prepolymers is disclosed herein. The blend may be a dual blend with a TDI-based polyurethane prepolymer blended with a second diisocyanate polyurethane prepolymer, typically a PPDI-based polyurethane prepolymer. The blend may also be a tri-blend with a TDI-based polyurethane prepolymer blended with two other diisocyanate polyurethane prepolymers, typically two different PPDI-based polyurethane prepolymers. The golf ball has a durability of at least 3.5 on a shear test rating of the cover.

Inventors: Dewanjee; Pijush K. (Carlsbad, CA), Ogg; Steven S. (Carlsbad, CA)

Assignee: Callaway Golf Company

International Classification: A63B 37/00 (20060101); A63B 37/12 (20060101); A63B 37/02 (20060101); A63B 037/04 (); A63B 037/06 (); A63B 037/00 ()

Expiration Date: 05/27/2020