Patent ID: 7179856
Filing Date: 2007-02-20
Classification: A63B

Abstract:
1. A photoluminescent golf ball, comprising an encapsulated photoluminescent composition, wherein the encapsulation photoluminescent composition has a wall material of maleic anhydride-grafted polypropylene, and a core composition is selected from the group consisting of a photoluminescent composition comprising 55–62.5 wt % of strontium oxide, 35–42.5 wt % of an aluminum oxide Al 2 O 4 , 1–9 wt % of dysprosium oxide and 0.5–1.5 wt % of europium oxide plus 0.02–0.06 mol % of dysprosium and 0.001–0.005 mol % of nickel; a photoluminescent composition comprising 20–68.75 wt % of strontium oxide, 30–78.75 wt % of an aluminum oxide AL 2 O 4 , 1–49.75 wt % of calcium oxide, 0.1–49.75 wt % of dysprosium oxide, 0.1–49.75 wt % of europium oxide and 0.05–48.8 wt % of silicon dioxide plus 0.02–0.06 mol % of dysprosium and 0.001–0.005 mol % of nickel; and a photoluminescent composition comprising 70–98.85 wt % of calcium sulfide, 1–29.85 wt % of calcium sulfate, 0.05–28.9 wt % of europium oxide and/or thulium oxide, and 0.1–28.95 wt % of silicon dioxide plus 0.02–0.06 mol % of dysprosium and 0.001–0.005 mol % of nickel.