Paint stripper
AssigneeSterling Drug Inc.
InventorLeon O. Desmarais
Life of this patent
Estimating the term…
Abstract
A non-flammable, non-acid, non-caustic stripper for paint and varnish which is thixotropic and suitable for application by brush or spray. A method for making the stripper easily and inexpensively is also disclosed.
Claims16
A non-flammable thixotropic stripper for paint and varnish comprising, in percent by weight, 66-72% of methylene chloride, 3-6% of ethylene glycol monoethyl ether, 8-12% of petroleum naphtha, 8-12% of methanol, 1-3% of an evaporation retardent, 0.2-1% of a thickener, 1-3% of polyoxyethylene glycol (5) tallow oil amine and the remainder water.
A method of making a non-flammable stripper for paint and varnish which comprises, in percent by weight, 66-72% of methylene chloride, 3-6% of ethylene glycol monoethyl ether, 8-12% of petroleum naphtha, 8-12% of methanol, 1-3% of paraffin wax, 0.2-1% of cross-linked polyacrylic acid, 1-3% of polyoxyethylene glycol (5) tallow oil amine, and water, said method comprising forming a primary mixture by insuring that the temperature of the methylene chloride is from about 70.degree. to about 80.degree. F., slowly adding melted paraffin wax under mixing until completely dispersed, adding the petroleum naphta and the ethylene glycol monoethylether while mixing and maintaining the temperature at from about 70.degree. to about 80.degree. F., and sifting in the cross-linked polyacrylic acid under mixing such that no lumps are formed and continuing mixing until completely dispersed, separately mixing the methanol and polyoxyethylene glycol (5) tallow oil amine to form a secondary mixture, carefully adding said secondary mixture to said primary mixture with continuous mixing, adding the water at a rate such that the water blends in as fast as it is added, and continuing to mix until a uniform blend is achieved.
Dependencies are inferred from the claim text.