Color changing paint and varnish remover

• US 8,198,226 B2
• Filed: 01/27/2010
• Issued: 06/12/2012
• Est. Priority Date: 11/17/2005
• Status: Expired due to Fees

• Current Assignee: Sunnyside Corp.
• Original Assignee: Sunnyside Corp.
• Inventors: Albright, Robert L., Newman, Noel, Cohen, Daniel
• Primary Examiner(s): Boyer, Charles
• Application Number:
  US12/657,719
• Publication Number:
  US 20100137177A1
• Time in Patent Office: 867 Days
• Field of Search: 510/201, 134/38
• US Class Current: 510/201
• CPC Class Codes: C09D 9/005 containing organic solvents

Abstract

A color change paint and varnish removal formulation is provided. The formulation comprises: at least one penetrant, at least one water insoluble carrier, at least one color visible colorant, at least one thickening agent, at least one wetting agent, and at least one activator, whereby the formulation is applied to the target area and as the surface of the formulation dries, the penetrant migrates away from the dehydrating surface and a surface crust of beads is formed; the beads have a particle size that allows the scattering of visible light into white light and produces the whitening and dilution of the visible color and thus, there is a color change to indicate that the stripping action of the formulation has ceased and is ready for the scraping and removal step.

Claims

1. A color changing paint stripper comprising:

at least one penetrant, at least one water insoluble carrier, at least one color visible colorant, at least one thickening agent, at least one wetting agent, water and at least one activator, said penetrant is selected from the group consisting of NMP, methylene chloride, dimethyl adipate, dimethyl glutarate, dimethyl succinate, butyl alcohol, ethyl alcohol, isopropyl alcohol, tertiary butyl alcohol, methyl alcohol, di-iso butyl ketone, methyl amyl ketone, butyl acetate, tertiary butyl acetate, isobutyl iso-butyrate, diethyl ether, ethylene glycol methyl ether, ethylene glycol butyl ether, turpentine distilled steam, aromatic hydrocarbon, cyclohexanone, isophrone, heptane, hexane, kerosene, lacquer diluents, rubber solvent, benzene, chlorobenzene, methanol, cyclohexanol, monoethanolamine and mixtures thereof, and said water insoluble carrier is selected from the group consisting of polysaccharides, starch, cellulose, polydextran, chitosan, chitin, limestone, metal oxides, aluminum silicates, hydrated aluminates, sodium magnesium silicates, barium sulphates, ferroxides, magnesium aluminum silicates and mixtures thereof, said thickening agent being selected from the group consisting of Fullers earth, clay, attapulgite, montmorillonite, magnasol, klucel H, hydroxyethyl cellulose, hydroxypropyl cellulose, methocel and mixtures thereof, said wetting agent being selected from the group consisting of propylene glycol, butylene glycol, ethylene glycol, diethylene glycol, triethylene glycol, tetraethylene glycol, pentaethylene glycol, diethylene glycol monomethyl ether, monomethyl ethers of triethylene glycol, tetraethylene glycol, pentaerythritol, dipentaerythritol, neopentyl glycol and mixtures thereof, and said activator being selected from the group consisting of formic acid, acetic acid, glycolic acid, hydroxyacetic acid, chloroacetic acid, fluoroacetic acid, oxalic acid, lactic acid and mixtures thereof, wherein said stripper is designed to be applied to a painted surface and said penetrant removes the paint and said stripper changes color to indicate that the paint has been fully removed by said penetrant.

2. The paint stripper of claim 1 wherein said formulation dries and said penetrant, upon removal of the paint, produces a surface crust of beads, said beads having a particle size that scatter visible light into white light and produces the whitening and dilution of the visible color.

3. The paint stripper of claim 2 wherein said carrier partially dehydrates emitting white light as the surface of said formulation dries.

4. The paint stripper of claim 2 wherein the particle of said beads is from about 200 to about 2,000 nanometers.

5. The paint stripper of claim 1 wherein the color change is a color loss.

6. The paint stripper of claim 1 wherein said penetrant is from about 5 to about 55% by weight of said product, said carrier is from about 2 to about 50% by weight of said product, said colorant is from about 0.01 to about 2.0% by weight of said product and said water is from about 15 to about 50% by weight of said product.

7. The paint stripper of claim 1 wherein said formulation is designed to be applied to a target area and as the surface of said formulation dries, said penetrant migrates away from a surface of said formulation carrying the visible color and thereby creating a color change to indicate that said formulation with the stripped paint is ready for removal.

8. The paint stripper of claim 1 wherein said formulation is safe for short term human skin contact and is a semi-solid.

9. The paint stripper of claim 1 wherein said formulation has a viscosity from about 1200 cps to about 4500 cps.

10. The paint stripper of claim 1 wherein said formulation further comprises surfactants.

11. A paint removal product with a color changing feature, said product comprises:

at least one penetrant, at least one water insoluble carrier, at least one color visible colorant, at least one thickening agent, at least one wetting agent, at least one surfactant, water and at least one activator, said penetrant is selected from the group consisting of NMP, benzyl alcohol, ethyl lactate, diethyl adipate, diethyl glutarate, ethyl benzoate, dimethyl succinate, diethyl succinate, dimethyl phthalate, diethyl phthalate, dimethyl terphthalate, diethyl terphthalate, ethylene bis(lactate), dimethyl sulfoxide, soy solvents, D-limonene, methylene chloride, toluene, methyl ethyl ketone, acetone, methanol, xylenes, mineral spirits, hi-flash naptha, dimethyl adipate, dimethyl glutarate, dimethyl succinate, butyl alcohol, ethyl alcohol, isopropyl alcohol, tertiary butyl alcohol, methyl alcohol, di-iso butyl ketone, methyl amyl ketone, butyl acetate, tertiary butyl acetate, isobutyl iso-butyrate, diethyl ether, ethylene glycol methyl ether, ethylene glycol butyl ether, turpentine, aromatic hydrocarbon, cyclohexanone, isophrone, heptane, hexane, kerosene, lacquer diluents, rubber solvent, benzene, chlorobenzene, cyclohexanol, monoethanolamine and mixtures thereof, said carrier is selected from the group consisting of polysaccharides, starch, cellulose, polydextran, chitosan, chitin, limestone, metal oxides, aluminum silicates, hydrated aluminates, sodium magnesium silicates, barium sulphates, ferroxides, magnesium aluminum silicates and mixtures thereof, said thickening agent being selected from the group consisting of Fullers earth, clay, attapulgite, montmorillonite, magnasol, klucel H, hydroxyethyl cellulose, hydroxypropyl cellulose, methocel and mixtures thereof, said wetting agent being selected from the group consisting of propylene glycol, butylene glycol, ethylene glycol, diethylene glycol, triethylene glycol, tetraethylene glycol, pentaethylene glycol, diethylene glycol monomethyl ether, monomethyl ethers of triethylene glycol, tetraethylene glycol, pentaerythritol, dipentaerythritol, neopentyl glycol and mixtures thereof, said activator being selected from the group consisting of formic acid, acetic acid, glycolic acid, hydroxyacetic acid, chloroacetic acid, fluoroacetic acid, oxalic acid, lactic acid and mixtures thereof, whereby said paint removal product is designed to be applied to a painted area, and upon removal of the paint by said penetrant, said product becomes paler than its original color to indicate that the stripping action of said paint removal product has ceased.

12. The product of claim 11 wherein as the surface of said product dries, said carrier partially dehydrates emitting white light as said colorant migrates away from the dehydrating surface of said product.

13. The product of claim 11 wherein said product has a viscosity from about 1200 cps to about 4500 cps.

14. The product of claim 11 wherein said color changing feature is a lessening in the intensity of the color of said product to indicate that the paint has been fully removed by said product.

15. The product of claim 11 wherein said color changing feature is a color loss.

16. The product of claim 11 wherein said penetrant is from about 5 to about 55% by weight of said product, said carrier is from about 2 to about 50% by weight of said product, said colorant is from about 0.01 to about 2.0% by weight of said product and said water is from about 15 to about 50% by weight of said product.

17. A method of manufacturing a paint stripper with a color change feature, said method comprises:

admixing at least one penetrant, at least one water insoluble carrier, at least one color visible colorant, at least one thickening agent, at least one wetting agent, and at least one activator, said penetrant is selected from the group consisting of NMP, benzyl alcohol, ethyl lactate, diethyl adipate, diethyl glutarate, ethyl benzoate, dimethyl succinate, diethyl succinate, dimethyl phthalate, diethyl phthalate, dimethyl terphthalate, diethyl terphthalate, ethylene bis(lactate), dimethyl sulfoxide, soy solvents, D-limonene, methylene chloride, toluene, methyl ethyl ketone, acetone, methanol, xylenes, mineral spirits, hi-flash naptha, dimethyl adipate, dimethyl glutarate, dimethyl succinate, butyl alcohol, ethyl alcohol, isopropyl alcohol, tertiary butyl alcohol, methyl alcohol, di-iso butyl ketone, methyl amyl ketone, butyl acetate, tertiary butyl acetate, isobutyl iso-butyrate, diethyl ether, ethylene glycol methyl ether, ethylene glycol butyl ether, turpentine, aromatic hydrocarbon, cyclohexanone, isophrone, heptane, hexane, kerosene, lacquer diluents, rubber solvent, benzene, chlorobenzene, cyclohexanol, monoethanolamine mixtures thereof, and said carrier is selected from the group consisting of polysaccharides, starch, cellulose, polydextran, chitosan, chitin, limestone, metal oxides, aluminum silicates, hydrated aluminates, sodium magnesium silicates, barium sulphates, ferroxides, magnesium aluminum silicates and mixtures thereof, said thickening agent being selected from the group consisting of Fullers earth, clay, attapulgite, montmorillonite, magnasol, klucel H, hydroxyethyl cellulose, hydroxypropyl cellulose, methocel and mixtures thereof, said wetting agent being selected from the group consisting of propylene glycol, butylene glycol, ethylene glycol, diethylene glycol, triethylene glycol, tetraethylene glycol, pentaethylene glycol, diethylene glycol monomethyl ether, monomethyl ethers of triethylene glycol, tetraethylene glycol, pentaerythritol, dipentaerythritol, neopentyl glycol and mixtures thereof, and said activator being selected from the group consisting of formic acid, acetic acid, glycolic acid, hydroxyacetic acid, chloroacetic acid, fluoroacetic acid, oxalic acid, lactic acid and mixtures thereof, and whereby said stripper is designed to be applied to a painted area and said stripper changes color to indicate that said stripper has fully removed the paint.

18. The method of claim 17 wherein said penetrant is from about 5 to about 55% by weight of said composition, said carrier is from about 2 to about 50% by weight of said composition, said colorant is from about 0.01 to about 2.0% by weight of said composition and said water is from about 15 to about 50% by weight of said composition.

19. The method of claim 17 wherein said composition has a viscosity from about 1200 cps to about 4500 cps.

20. The method of claim 17 further comprising at least one surfactant.