Color changing paint and varnish remover

• US 8,383,565 B2
• Filed: 01/31/2007
• Issued: 02/26/2013
• Est. Priority Date: 11/17/2005
• Status: Expired due to Fees

• Current Assignee: Dynacraft Industries, Inc.
• Original Assignee: Sunnyside Corp.
• Inventors: Albright, Robert L., Newman, Noel, Cohen, Daniel
• Primary Examiner(s): BOYER, CHARLES I
• Application Number:
  US11/699,789
• Publication Number:
  US 20070129276A1
• Time in Patent Office: 2,218 Days
• Field of Search: 510/201, 510/202, 510/206, 510/500, 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 and at least one color visible colorant 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 method of manufacturing a paint removal composition with a color change feature, said method comprising:

admixing at least one penetrant, at least one water insoluble carrier, and at least one color visible colorant, prior to admixing, selecting at least one penetrant 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, 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, and creating a color changing paint stripper composition whereby said stripper composition is designed to be applied to a target area and said stripper composition changes from a visibly distinct color to a shade of white when said stripper composition with stripped paint is ready for scraping and removal.

2. The method of claim 1 wherein said stripper composition is a semi-solid, said composition being safe for short term human skin contact.

3. The method of claim 1 further comprising admixing water.

4. The method of claim 3 wherein said stripper composition comprises from about 5 to about 55% by weight of said penetrant, from about 2 to about 50% by weight of said carrier, from about 0.01 to about 2.0% by weight of said colorant and from about 15 to about 50% by weight of said water.

5. The method of claim 1 further comprising:

admixing at least one thickening agent, 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.

6. The method of claim 1 further comprising:

admixing at least one wetting agent, 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.

7. The method of claim 1 further comprising:

admixing at least one activator, 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.

8. The method of claim 1 further comprising:

admixing at least one surfactant.

9. The method of claim 1 wherein said colorant is selected from the group consisting of dye, pigments and mixtures thereof.

10. A color changing paint stripper manufactured by a method comprising:

selecting at least one penetrant 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, selecting at least one water insoluble carrier 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, and selecting at least one colorant from the group consisting of dye, pigments and mixtures thereof, admixing said penetrant, said water insoluble carrier, and said color visible colorant and creating a color changing paint stripper which is designed to be applied to a painted area and changes from a first visibly distinctive color to a second visibly distinctive color when the paint has been stripped and is ready for removal.

11. The method of claim 10 further comprising:

admixing at least one thickening agent, and selecting said thickening agent from the group consisting of Fullers earth, clay, attapulgite, montmorillonite, magnasol, klucel H, hydroxyethyl cellulose, hydroxypropyl cellulose, methocel and mixtures thereof.

12. The method of claim 10 further comprising:

admixing at least one wetting agent, and selecting said wetting agent 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.

13. The method of claim 10 further comprising:

admixing at least one activator, and selecting said activator from the group consisting of formic acid, acetic acid, glycolic acid, hydroxyacetic acid, chloroacetic acid, fluoroacetic acid, oxalic acid, lactic acid and mixtures thereof.

14. The method of claim 10 further comprising:

admixing water.

15. The method of claim 14 wherein said stripper comprises from about 5 to about 55% by weight of said penetrant, from about 2 to about 50% by weight of said carrier, from about 0.01 to about 2.0% by weight of said colorant and from about 15 to about 50% by weight of said water.

16. The method of claim 10 wherein said stripper has a viscosity from about 1200 cps to about 4500 cps and is a semi-solid.

17. A color changing paint stripping formulation manufactured by a process comprising:

selecting at least one penetrant 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;

selecting at least one water insoluble carrier 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;

selecting at least one colorant from the group consisting of dye, pigments and mixtures thereof; and

admixing said penetrant, said water insoluble carrier, said color visible colorant and water to create a color changing paint stripper which is has a viscosity of from about 1200 cps to about 4500 cps and is a semi-solid, said color changing paint stripper is designed to be applied to a painted area and change from a first visibly distinctive color to a second visibly distinctive color when the paint has been stripped and is ready for removal.

18. The process of claim 17 wherein said color changing paint stripping formulation comprises from about 5 to about 55% by weight of said penetrant, from about 2 to about 50% by weight of said carrier, from about 0.01 to about 2.0% by weight of said colorant and from about 15 to about 50% by weight of said water.

19. The process of claim 17 further comprising:

selecting at least one thickening agent from the group consisting of Fullers earth, clay, attapulgite, montmorillonite, magnasol, klucel H, hydroxyethyl cellulose, hydroxypropyl cellulose, methocel and mixtures thereof;

selecting at least one wetting agent 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;

selecting at least one activator 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

admixing said thickening agent, said wetting agent and said activator to said color changing paint stripping formulation.

20. The process of claim 17 wherein said color changing paint stripping formulation is applied to a target area and as the surface of product dries, said colorant migrates away from the dehydrating surface and the drying of the product and the migration of said penetrant forms a surface crust of beads, said beads having a particle size from about 200 to about 2,000 nanometers, said particle size allows for scattering of visible light into white light thereby causing the product to change color to indicate that said product with the paint is ready for the removal step.