Polycarbonate diol coating composition for caustic and UV resistance
AssigneeFerro Corporation
InventorsThirumalai Duraisamy, Kameron Gale, Cindy Pankiewicz, George E. Sakoske
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Abstract
A curable glass coating composition including 5-70 wt % aliphatic polycarbonate diol, 5-60 wt % crosslinker, 1-20 wt % extender, 4-20 wt % fatty alcohol, and 2-30 wt % crystalline or amorphous powder filler material, and optionally 2-20 wt % aliphatic polyester polyol and 2-20 wt % cycloaliphatic epoxy. The coating composition can be applied to a glass substrate and cured to form a decorative cured polyurethane coating layer on the substrate that has improved caustic and UV resistance.
Claims19
A curable glass coating composition including:
- 5-70 wt % aliphatic polycarbonate diol,
- 5-60 wt % crosslinker,
- 1-20 wt % trimethylolpropane,
- 4-20 wt % fatty alcohol, and
- 2-30 wt % powder filler material,
- wherein the powder filler material is zinc silicate powder, and
- wherein the composition is free of bisphenol A and free of heavy metals including lead, cadmium, chromium, nickel, vanadium, antimony and bismuth.
A method of coating a glass substrate, comprising:
- providing a curable glass coating composition including
- 5-70 wt % aliphatic polycarbonate diol,
- 5-60 wt % crosslinker,
- 1-20 wt % trimethylolpropane,
- 4-20 wt % fatty alcohol, and
- 2-30 wt % powder filler material,
- wherein the powder filler material is zinc silicate powder, and
- wherein the composition is free of bisphenol A and free of heavy metals including lead, cadmium, chromium, nickel, vanadium, antimony and bismuth,
- applying the coating composition to the glass substrate, and
- curing the coating composition to form a coating on the glass substrate.
Dependencies are inferred from the claim text.