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US 10,208,425 B2Granted
Method for dyeing golf balls and dyed golf balls
AssigneeNIKE, Inc.
InventorsBradley C. Tutmark, Anna Schoborg, Yihua Chang
Life of this patent
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Abstract
A golf ball of a first color is dyed to a second color with an anionic or nonionic disperse dye. Either or both of a pigmented coating layer or an optional clear coating layer on the pigmented coating layer comprises a member selected from the group consisting of polyurethanes, polyureas, polyamides, and combinations thereof, which can be dyed by the anionic or nonionic disperse dye.
Claims20
A method of dyeing an article from a first color to a different color, comprising:
- providing an article comprising a coating layer of a first color, the coating layer including a polyurethane;
- and
- partially or fully immersing the article in an aqueous dye solution for a time sufficient to dye the coating layer to a second color different from the first color;
- wherein the aqueous dye solution consists essentially of an anionic dye, a quaternary ammonium compound selected from soluble tetrabutylammonium compounds and soluble tetrahexylammonium compounds, water, and from about 1% by volume to about 50% by volume of a water-soluble organic solvent selected from the group consisting of methanol, ethanol, n-propanol, acetone, methyl ethyl ketone, butyl acetate, and combinations thereof.
1 more element
Dependencies are inferred from the claim text.