Protective water reversible clear coating for substrates
AssigneeConservation Technologies, Inc.
InventorsRichard Wolbers, Anthony Lagalante
Life of this patent
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Abstract
A protective, sacrificial, water-reversible, coating composition for the protection of substrates comprised of water, a volatile base, a film-forming acrylic polymer in a water dispersion form, a compatabilizing polymer, specifically poly (2-ethyl-2-oxazoline), a poly acidic polymer (pH specific in terms of its solubility), wherein said coating is both water applied and water reversible or re-soluble under specific pH conditions.
Claims20
A composition comprising:
- an aqueous medium, a volatile base, an acrylic film-forming polymer, a compatibilizing polymer, and a poly acidic polymer, wherein said composition comprises between 0.1 and 30% by weight of the poly acidic polymer 5-50% by weight of the compatibilizing polymer and between 30 and 90 percent by weight of the acrylic film-forming polymer and wherein said composition is capable of being applied to a substrate using aqueous means and removed from said same substrate using an aqueous buffer at a specific pH.
A method of coating a substrate with a removable composition comprising:
- a. forming a composition comprising:
- an aqueous medium, a volatile base, an acrylic film-forming polymer, a compatibilizing polymer, and a poly acidic polymer, wherein said composition comprises between 0.1 and 30% by weight of the poly acidic polymer 5-50% by weight of the compatibilizing polymer and between 30 and 90 percent by weight of the acrylic film-forming polymer and wherein said composition is capable of being applied to a substrate using aqueous means and removed from said same substrate using an aqueous buffer at a specific pH,
- b. coating said substrate with said composition, and
- c. allowing said composition to dry.
A paint additive comprising an poly acidic material and a compatibilizing polyoxazoline polymer;
- said additive formulated for addition to a latex based aqueous paint, wherein upon addition of the paint additive to a latex based aqueous paint, said latex based paint serves as an acrylic film forming polymer, and is present between 30 and 90% of the entire formulation by weight, the compatibilizing polymer between 5 and 50% by weight, and the poly acidic acid between 0.1 and 30% by weight.
Dependencies are inferred from the claim text.