Abstract: A cleaning composition for paint delivery systems includes 3-90% of an organic solvent which may comprise one or more aromatic hydrocarbons, aliphatic hydrocarbons and aliphatic esters. The composition also includes between 0.5 and 30% of a hydroxy carboxylic acid such as glycolic acid, as well as a coupling agent which may comprise one or more alcohols, glycols or glycol ethers.

Abstract: Disclosed is a single phase liquid composition comprising 0.5 to 30 wt % of a benzotrifluoride solvent, about 0.5 to about 50 wt % of a glycol ether cosolvent, up to about 50 wt % of an alkanol, up to about 10 wt % of a surfactant, and the remainder water. The composition is effective in cleaning hard surfaces, stripping paint, and as a carrier.

Abstract: Stripping action of an alkaline paint stripper is improved when ammonia is partially or completely replaced with ammonium bicarbonate or chemical equivalent thereof which decomposes into ammonia and carbon dioxide. A benzyl alcohol solvent system containing at least ammonium bicarbonate is preferably a water-in-oil emulsion emulsified with oleic hydroxyethyl imidazoline and thickened with hydroxypropyl cellulose or hydroxypropyl methylcellulose. A mixture of ammonium carbamate and ammonium bicarbonate identified as ammonium carbonate is the preferred activator for this alkaline paint stripper. Improved stripping can also be provided by reacting ammonium bicarbonate and ammonia in situ within the water-in-oil emulsion.

Abstract: A method is provided, to render non-hazardous, surfaces which are coated with lead-based paints. A composition comprising an aqueous mixture of hydrogen peroxide, ammonium hydroxide, nitric acid and acetic acid is poured on the surface and, after a time, water is poured onto the surface to remove the lead-based paint. The method is effective on surfaces which may be comprised of wood, metal, concrete, wallboard or plaster without destroying the integrity of these surfaces.

Abstract: A method for preparing an environmentally safe composition free of chlorinated solvents which is non-flammable, fully biodegradable, and low odor and the use of such composition for the removal of various coatings from metal substrates. The composition comprises a water-based mixture of one or more high boiling, high flash aromatic solvent(s), a peroxide generating agent, and a hydroxycarboxylic acid. It can be prepared as a liquid and used as such for immersion/dipping operations or as a thick paste "cling type" material when optimal application requires a thin film. These can be applied by spraying or brushing.

Abstract: A paint stripping composition includes a peroxide, water and an organic solvent. The composition has a near-neutral pH. The solvents may include benzyl alcohol and/or cyclohexane dimethanol, and the peroxide may comprise hydrogen peroxide or urea peroxide.

Abstract: A paint-stripper composition is described which comprises a mixture of(A) from about 5% to about 90% by weight of at least one organic solvent selected from the group consisting of benzyl alcohol, alkyl-substituted benzyl alcohols, furfuryl alcohol, alkyl-substituted furfuryl alcohol and acetylenic alcohols containing from 3 to about 5 carbon atoms;(B) from about 0.05% to about 5% by weight of at least one inorganic clay thickener;(C) from about 0.05% to about 5% by weight of at least one organic thickener; and(D) up to about 94.9% by weight of water.A method of stripping paint from a surface also is described, and the method comprises(A) contacting the paint with a paint stripper composition as described above; for a period of time sufficient to reduce the adhesion of the paint to the surface; and(B) removing said paint and paint-stripper composition from said surface.

Abstract: A solvent that will remove all types of commercially available water soluble polymers by breaking the covalent bonds within the polymer molecules such that these polymers can then be removed from all surfaces and equipment completely and safely by washing away with water.The solvent consists of (in a 21/2 gallon concentrated solution) 4% of ammonium chloride, 29% of ammonium hydroxide, and 67% water.

Abstract: A cleaning solution consisting essentially of dimethyl ester, water and one or more organic solvents completely miscible at 23.degree. C. with dimethyl ester and water, said water present at at least ten weight percent based on the weight of solution components.

Abstract: The present invention is drawn toward compositions and methods of using same, the compositions comprising (in diluted form):a) an effective amount of a phenyl substituted alkyl alcohol having a water solubility of at least 0.1 weight percent (preferably benzyl alcohol);b) a coupler; andc) water,wherein the amount of the coupler is at least 3.0 times the amount necessary to completely solubilize the phenyl substituted alkyl alcohol in the water. Preferred couplers are the salt of a monofunctional water-soluble amine and an organic acid comprising at least one water-insoluble organic acid having from 6-10 carbon atoms. Methods of removing coatings such as standard urethane/acrylic sealer finishes from floors using the inventive compositions are also described.

Abstract: Stripping action of an alkaline paint stripper is improved when ammonia is partially or completely replaced with ammonium bicarbonate or chemical equivalent thereof which decomposes into ammonia and carbon dioxide. A benzyl alcohol solvent system containing at least ammonium bicarbonate is preferably a water-in-oil emulsion emulsified with oleic hydroxyethyl imidazoline and thickened with hydroxypropyl cellulose or hydroxypropyl methylcellulose. A mixture of ammonium carbamate and ammonium bicarbonate identified as ammonium carbonate is the preferred activator for this alkaline paint stripper. Improved stripping can also be provided by reacting ammonium bicarbonate and ammonia in situ within the water-in-oil emulsion.

Abstract: Solvent assisted alkaline paint stripping can be speeded by using mixtures of (i) glycol and/or oligoglycol monoethers with (ii) unetherified glycols and oligoglycols and/or alkanolamines.

Abstract: A cleaning agent composition is disclosed which is excellent in removing ability of the soldering flux, wax and machine oil, easy in waste water disposal, and free from the global environmental concern, allowing safe operation. The composition comprises: A) at least one member selected from the group consisting of propylene glycol monoalkyl ether having a C.sub.4-6 alkyl group and dipropylene glycol monoalkyl ether having a C.sub.3-6 alkyl group, B) at least one member selected from the group consisting of methanol, ethanol, 1-propanol and 2-propanol, and C) water.

Abstract: A stripping and cleaning composition is provided which contains a polyhydric alcohol, fluoboric acid, a fluorine containing compound and a polar solvent. The pH of the composition is less than 5. Also provided is a method of stripping and cleaning utilizing the compositions of the invention.

Abstract: Stripping action of an alkaline paint stripper is improved when ammonia is partially or completely replaced with ammonium bicarbonate or chemical equivalent thereof which decomposes into ammonia and carbon dioxide. A benzyl alcohol solvent system containing at least ammonium bicarbonate is preferably a water-in-oil emulsion emulsified with oleic hydroxyethyl imidazoline and thickened with hydroxypropyl cellulose or hydroxypropyl methylcellulose. A mixture of ammonium carbamate and ammonium bicarbonate identified as ammonium carbonate is the preferred activator for this alkaline paint stripper. Improved stripping can also be provided by reacting ammonium bicarbonate and ammonia in situ within the water-in-oil emulsion.

Abstract: This invention relates to water-based coating remover compositions comprising a substantially stable and homogeneous mixture of (a) from about 16 to about 55 percent by weight of N-methyl-2-pyrrolidone; (b) from about 11 to about 32 percent by weight of a dibasic ester; (c) from about 4 to about 20 percent by weight of a propylene glycol or glycol ether; (d) an effective amount of a hydroxypropyl cellulose thickener; and (e) from about 25 to about 65 percent by weight water. Exemplary dibasic esters useful in the present invention include at least one C.sub.1-4 dialkyl ester of at least one C.sub.4-6 aliphatic dibasic acid. Suitable glycol ethers include propylene glycol, propylene glycol oligomers or monoalkyl ether of monophenyl ether derivatives of said glycols and oligomers.

Abstract: The invention teaches an aqueous stripping composition that is essentially free of any hydroxylamine compounds. The composition is an aqueous mixture of an alkanolamine, tetraalkylammonium hydroxide, and an inhibitor. The composition is particularly useful for cleaning substrates containing organic residues.

Abstract: A composition for reclaiming paint and volatile organic paint carrier from industrial paint spray booths without increasing VOCs has been developed. The improvement over the existing booths recirculating hydrophilic based fluids, is the inclusion of a water based solution containing about 10 to about 45 per cent by weight of one or more N-alkyl pyrrolidones, about 15 to 40 percent by weight of one or more alkyl glycol mono alkyl ethers, a surfactant present in the amount of about 0.1 to 2.0 percent by weight, and the balance water.

Abstract: Aqueous paint stripper formulations containing a solvent system comprised of an ester such as benzyl formate and methods for using the same to strip paint.

Abstract: An aqueous alkaline developing solution comprises an alkali compound, water and an alkylnaphthalene sulfonate having the following formula: ##STR1## in which R represents an alkyl group of 3 to 5 carbon atoms and q is 0 or an integer of 1 to 3, in the amount of 1 to 20 weight %. The aqueous alkaline developing solution further contains an anionic surface active agent of the specific sulfonate compound having a naphthalene ring and a polypolyoxyethylene moiety, in the amount of 0.1 to 10 weight % and an nonionic surface active agent having a polyoxyethylene moiety and an aromatic ring in its structure in the amount of 0.03 to 3 weight %, or contains an anionic surface active agent of the specific sulfonate compound having the specific aralkyl-substituted benzene ring and a polypolyoxyethylene moiety.