Protective water reversible clear coating for substrates
AssigneeConservation Technologies, Inc.
InventorsRichard Wolbers, Anthony Lagalante
Life of this patent
Estimating the term…
Abstract
A protective water reversible clear coating composition for the protection of substrates comprised of water, a volatile base, a film-forming acrylic polymer in a water dispersion form, a second film-forming polymer, specifically poly (2-ethyl-2-oxazoline) that is miscible with the first dispersed acrylic polymer, a poly acidic material (pH specific in terms of its solubility properties), and an alkaline swellable thickener that also can be water soluble as a function of pH and 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 polymer, a film-forming polymer, a poly acidic material, and an alkaline swellable thickener, wherein said composition is capable of being applied to a substrate using aqueous means and removed from said same substrate using aqueous means at a specific pH.
The composition of claim 11 wherein said swellable thickener is Acrysol ASE-60, Acrysol ASE-75, Rheolate 450, Rheolate 420, Elementis Rheolate 255, Rheolate 216 and Rheolate 1.
A method of coating a substrate with a removable composition comprising:
- a. Forming a composition comprising:
- water, a volatile base, an acrylic polymer, poly (2-ethyl-2-oxazoline), a poly acidic material, and an alkaline swellable thickener,
- b. coating said substrate with said composition, and
- c. allowing said composition to dry.
A method of coating a substrate comprising:
- a. Applying a first layer of a composition comprising:
- water, a volatile base, an acrylic polymer, poly (2-ethyl-2-oxazoline), a poly acidic material, and an alkaline swellable thickener;
- b. applying a second layer of a second composition comprising:
- water, a volatile base, an acrylic polymer, poly (2-ethyl-2-oxazoline), a poly acidic material, and an alkaline swellable thickener, and
- c. wherein said first and second compositions are capable of being re-solubilized at a different pH.
Dependencies are inferred from the claim text.