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Patents

Polyurethane Aqueous Golf Ball Paint

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By: KERRY PIANOFORTE

Editor, Coatings World, Coatings World

U.S. 8,563,639 B2
SRI Sports Limited and Shinto Paint Co. have been granted a patent for a painted golf ball comprised of a golf ball body and a paint film formed on the golf ball body, wherein the paint film is formed from a curing type polyurethane aqueous golf ball paint, comprised of (A) an aqueous polyol composition and (B) an aqueous polyisocyanate, wherein (A) the aqueous polyol composition contains (a-1) an aqueous acrylic polyol, (a-2) an aqueous urethane polyol and (a-3) an aqueous polyurethane resin; a molar ratio (NCO/OH) of an isocyanate group of (B) the aqueous polyisocyanate to a hydroxyl group of (A) the aqueous polyol composition ranges from 1.25 to 2.50; and a content of a high boiling point solvent having a boiling point of 150° C. or more in the aqueous golf ball paint is more than 0 mass % and 10 mass % or less.

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