Golf ball having multi-layer core with filler in outer core

摘要

A golf ball includes an inner core and an outer core, both made of highly neutralized acid polymers. The inner core does not substantially include any fillers, while the outer core does include fillers. The outer core may include fillers in an amount of from about 17.% to about 30.7% by weight. The filler may be barium sulfate. The core made from the inner core and the outer core may have an unexpectedly higher coefficient of restitution.

主权项

1. A golf ball comprising:
a core comprising
an inner core consisting essentially of a first highly neutralized acid polymer, andan outer core layer substantially surrounding the inner core and consisting essentially of a second highly neutralized acid polymer composition and a filler; and a cover layer substantially surrounding the core; wherein the inner core contains less than about 0.01% by weight of a first filler; and the outer core layer contains from about 17.0% to about 30.7% by weight of a second filler, and from about 69.3% to about 83.0% by weight of the second highly neutralized acid polymer.