Cleaning compositions for solid surfaces – auxiliary compositions – Cleaning compositions or processes of preparing – For cleaning a specific substrate or removing a specific...
Patent
1993-11-15
1997-01-28
Hertzog, Ardith
Cleaning compositions for solid surfaces, auxiliary compositions
Cleaning compositions or processes of preparing
For cleaning a specific substrate or removing a specific...
510207, 510212, 510434, 510435, 510476, 510506, 510507, C09D 900, C11D 706, C11D 750, C11D 760
Patent
active
055977871
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.
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"Lead is a Four-Letter Word The Tragedy of Lead-based Paint", Irvin Barnett, Envirobestos Research, May 1994.
Chemical Abstract accession No. 110:77728, for JP 63221179, Sep. 14, 1988.
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Buff Ernest D.
Hertzog Ardith
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