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US 8,986,791 B2Granted
Low gloss aqueous coating compositions containing poly(ethylene oxide) for use on leather
AssigneeRohm and Haas Company
InventorTheodore Tysak
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Abstract
The present invention relates to aqueous coating compositions having low gloss for treating natural or synthetic leather. These aqueous coating compositions contain one or more water soluble poly(ethylene oxide) resins having the general formula [—CH2CH2O—]n and one or more polymer binders.
Claims13
An aqueous coating composition for treating leather comprising:
- A) 1 to 94.95% by weight of an aqueous solvent comprising water;
- B) 5 to 80% by weight of a polymer binder comprising polymerized units derived from one or more ethylenically unsaturated monomers, an acid-functional residue, and a polyvalent metal ion;
- and
- C) 0.05 to 10% by weight of a water soluble poly(ethylene oxide) resin having the general formula [—CH2CH2O—]n, wherein n is selected to provide a weight average molecular weight of 100,000 to 1,000,000 grams per mole of the water soluble poly(ethylene oxide),
- wherein the water soluble poly(ethylene oxide) resin optionally comprises polymerized units derived from propylene oxide, and
- wherein a coating of the aqueous coating composition provides a 60° gloss of 8.3 to 12 and a whiteness of 66.21 to 75.31, wherein the gloss and whiteness are determined on a two-coat coating on leather.
3 more elements
Dependencies are inferred from the claim text.