Lead paint removal

Details Lead paint removal Lead paint removal

1996-10-15

1999-10-12

Soderquist, Allen

Cleaning and liquid contact with solids

Processes

Paints, varnishes, lacquers, or enamels, removal

134 4, 134 29, 134 42, B08B 700

Patent

active

059649615

ABSTRACT:
Oil based paint containing lead compounds is removed from a substrate on which it is deposited by application of an aqueous solution thereto. The solution comprises a solvent that does not dissolve the paint and is compatible with water; a film former for retarding evaporation; a viscosity builder to fortify the solution and prevent slumping thereof during application to vertical and overhead horizontal surfaces; an alkaline compound for reacting with the pigment portion of the paint. Advantageously, the solution penetrates the deposited paint, which coagulates and separates from the substrate. Stripping procedures are facilitated, and neutralization of the substrate prior to repainting is avoided. A safe and effective treatment of materials covered with lead-containing paint is carried out in an economical, cost efficient manner.

REFERENCES:
patent: 2447052 (1948-08-01), Bond et al.
patent: 4368082 (1983-01-01), Poels
patent: 4502891 (1985-03-01), Brocklehurst et al.
patent: 4652393 (1987-03-01), Ely et al.
patent: 4692263 (1987-09-01), Eberhardt et al.
patent: 4699730 (1987-10-01), Miles et al.
patent: 5167853 (1992-12-01), Stevens
patent: 5597787 (1997-01-01), Barnett

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