Abstract: Non-corrosive cleaning compositions that are aqueous based and useful for removing photoresist, plasma etch and CMP residues from a substrate. One preferred cleaning composition comprises: (i) a hydroxylamine or a hydroxylamine salt compound; (ii) at least one fluorine-containing compound; and (iii) water. Another cleaning composition comprises: (i) a compound selected from the group consisting of: an amine, a quatenary ammonium hydroxide, and ammonium hydroxide; (ii) at least one fluorine-containing compound; and (iii) water.

Abstract: Process useful to clean and remove uncured resins. The resins to be treaded include epoxy, polyester (fiberglass) and polyurethane foam. The compositions include alkylene carbonate, including propylene and ethylene carbonate.

Abstract: This composition for stripping paints, lacquers or primers is characterized in that it consists of or comprises: (A) 5 to 90 parts by weight of water; (B) 2 to 47.5 parts by weight of benzyl alcohol; (C) 2 to 47.5 parts by weight of dimethyl sulphoxide or N-methylpyrrolidone, (A)+(B)+(C) representing 100 parts by weight.

Abstract: A method of 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 solvents (benzyl alcohol, benzyl ether, 1-phenoxy-2-propanol), a peroxide generating agent (hydrogen peroxide), and a hydroxycarboxylic acid (glycolic 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 predominantly aqueous composition for plasticising or softening paint, varnish and similar coatings prior to stripping the coating from a surface includes preferably a combination of the active agents triethylphosphate and a co-agent selected from dimethyl adipate, 1,2,3-propanetriol triacetate, tri-n-butyl citrate, n-octyl acetate, methyl octanoate and 2-ethyl-l-butanol, as an emulsified hydrophobic phase in which the actives are partitioned between the hydrophobic and aqueous phases. The emulsion is preferably stabilized using a non-ionic water-soluble block copolymer surfactant, being a copolymer of more than one alkaline oxide. The composition may be thickened using a rheology control agent. Synthetic smectic clays are particularly suitable. The composition is non-toxic and consists predominantly of water, and yet exhibits effective paint, varnish and lacquer plasticising/softening characteristics.

Abstract: The present invention relates to a cleaning solution for cleaning substrates, to which a metallic wiring has been applied, being capable of easily removing the metallic impurities of the substrate surface without corroding the metal, not putting a strain on the environment, and not causing a shelf life problem.The cleaning solution comprising at least one member selected from a group consisting of oxalic acid, ammonium oxalate and polyaminocarboxylic acids, but contains no hydrogen fluoride.

Abstract: A composition is provided which has been formulated to render non-hazardous surfaces which are coated with lead-based paints or surface soil which is contaminated with lead compounds. The composition is an aqueous mixture comprising hydrogen peroxide, ammonium hydroxide, nitric acid and acetic acid. The composition is effective on surfaces which may be comprised of wood, metal, concrete, wallboard or plaster without destroying the integrity of these surfaces.

Abstract: This composition for stripping paints, varnishes or lacquers coating a substrate is characterized in that it consists of or comprises:(A) 1 to 100 parts by weight of a mixture (A1) of at least one aromatic solvent chosen from benzaldehyde, toluene, xylene and anisole and (A2) of benzoic acid;(B) 99 to 0 parts by weight of water;(A)+(B) representing in total 100 parts by weight.In particular, (A) consists of a commercial benzaldehyde which contains benzoic acid.

Abstract: Paint stripping compositions that are relatively non-toxic and environmentally safe are disclosed for use in removing, for example, oil base alkyd and latex paints, varnishes, lacquers, shellacs, enamels, polyurethane, and epoxy coatings from wood and metal surfaces at ambient temperatures. Tetrahydrofurfuryl alkyl ethers, alone, or in combination with other ingredients, such as N-methyl-2-pyrrolidone, provide compositions with improved paint stripping properties.

Abstract: Non-corrosive cleaning compositions that are aqueous based and useful for removing photoresist, plasma etch and CMP residues from a substrate. One preferred cleaning composition comprises: (i) a hydroxylamine or a hydroxylamine salt compound;(ii) at least one fluorine-containing compound; and (iii) water. Another cleaning composition comprises: (i) a compound selected from the group consisting of: an amine, a quatenary ammonium hydroxide, and ammonium hydroxide; (ii) at least one fluorine-containing compound; and (iii) water.

Abstract: Method for applying an aqueous benzyl alcohol paint strippling composition to the surface of a high strength steel substrate or of an assembly containing high strength steel components, such as steel fasteners on the surface of aircraft assemblies, while minimizing the effect of hydrogen-induced embrittlement, hydrogen-induced cracking and corrosion normally caused by aqueous benzyl alcohol. The invention comprises applying a liquid silane to the surface of the steel substrate or components immediately before and/or as an ingredient of a novel aqueous benzyl alcohol composition of the present invention which contains from about 1% to 10% by volume of the liquid silane.

Abstract: An alkaline, aqueous cleaning solution which is capable of removing at least a substantial portion of uncured adhesive residues, e.g., epoxy-based adhesives, from a substrate, preferably a metal stencil substrate, contains water, an alkalinity-providing agent and a synergistic combination of surfactants, specifically an N-alkylpyrrolidone surfactant, which is preferably N-octyl-2-pyrrolidone, and an aminocarboxylic acid surfactant, which is preferably N-coco-beta-aminopropionic acid. At an active-concentration ratio of the N-alkyl-2-pyrrolidone surfactant to the aminocarboxylic acid surfactant of from about 1:1 to about 3.5:1 and a total active concentration of at least 0.30% by weight of the aqueous cleaning solution, the N-alkyl-2-pyrrolidone and aminocarboxylic acid surfactants synergistically improve the ability of the solution to remove uncured adhesive residues from the substrate, even at relatively low wash temperatures, e.g., from about 70.degree. F. to less than about 135.degree. F.

Abstract: A thickened, shear thinnable composition comprising a water-miscible organic liquid, alumina, water and an effective amount of a gelling agent that will flocculate or gel the alumina to the desired degree but permit the gelled composition to be rendered less viscous or pourable upon the application of a shear force.

Abstract: An aqueous stripping composition comprising a mixture of an organic amine and a corrosion inhibitor which is benzotriazole alone or in combination with gallic acid, its ester or analog. The stripping composition is effective to strip photoresists, residues from plasma process generated organic, metal-organic materials, inorganic salts, oxides, hydroxides or complexes in combination with or exclusive of organic photoresist films at low temperatures with little corrosion of copper or titanium containing substrates.

Abstract: Stripping compositions based on a polar aprotic solvent, an ether and water. The composition is characterized in that it comprises at least the following: 1) a polar aprotic solvent, especially dimethyl sulfoxide (DMSO) or N-methyl pyrrolidinone (NMP); 2) an ether chosen from anisole and tetrahydrofuran (THF); 3) water.

Abstract: The present invention is related to a stripping composition for paints, varnishes or lacquers. This composition contains at least water and anisole.

Abstract: A method is provided to render non-hazardous surface soil which is contaminated with lead compounds. The soil is treated by applying an aqueous composition comprising hydrogen peroxide, ammonium hydroxide, nitric acid and acetic acid and allowing said composition to migrate through the soil.

Abstract: The present invention is directed to a composition for stripping coatings from a surface, the composition including:a. A solvent mixture composed of a phenyl substituted alkyl alcohol and an alkyl or aryl glycol ether or an alkyl or aromatic alcohol;b. A coupler composed of a salt formed from a water soluble organic amine and an acid comprising at least one C7-C18 ethoxylated anionic surfactant;c. Optionally water.The use of the C7-C18 ethoxylated anionic surfactant provides a stripper which can be diluted in water of various compositions yet provide an effective stripping/cleaning agent.

Abstract: Alkaline earth and transition metal scaling such as calcium and magnesium scaling can be controlled or removed in pipes, vessels, heat exchanges, evaporators, and filters, and in the oil field applications such as, for example, for drilling, production, and recovery operations with the addition of an effective amount of 2-hydroxyethyl iminodiacetic acid (HEIDA) or a salt thereof.

Abstract: Compositions and methods for removal of polymeric coatings from nonporous surfaces are provided. The method comprises the mixing of two stock solutions, a peroxide/acid solution and an alkaline solution, and immediate application to the surface to be stripped of coating. The applied mixture produces a controlled peroxide oxidation reaction causing the coating to become softened-to-release. A further step of washing or blowing with water, air, cornstarch, or plastic media will remove the softened-to-release coating. The two stock solutions are stable to storage and, when in use, are continuously mixed in a volume so as to control reaction rate, pH, corrosivity of the coating remover, and reaction rate with the coating.

Abstract: A stripping and/or cleaning composition is disclosed, which contains, by volume: (a) 1 to 90% of at least one C.sub.1 -C.sub.4 dialkyl ester of at least one C.sub.4 -C.sub.6 aliphatic diacid; and (b) 99 to 1% of at least one ether selected from the group consisting of ethers with a flash point above 5.degree. C., at least one methoxy group per molecule and a molecular weight of less than 200.

Abstract: Oil-based paint containing lead compounds, acrylic-based or other latex paint or a combination of paints in which acrylic-based or other latex paint covers an oil-based paint is removed from a substrate on which the paint is deposited by application of an aqueous solution thereto. The solution comprises a solvent that does not dissolve the oil-based 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.

Abstract: An emulsifier composition containing: (a) from about 7 to about 15% by weight of an alkyl polyglycoside of formula I:R.sub.1 O(R.sub.2 O).sub.b (Z).sub.a (I)wherein R.sub.1 is a monovalent organic radical having from about 6 to about 30 carbon atoms; R.sub.2 is a divalent alkylene radical having from 2 to 4 carbon atoms; Z is a saccharide residue having 5 or 6 carbon atoms; b is a number having a value from 0 to about 12; a is a number having a value from 1 to about 6; (b) from about 9 to about 17% by weight of an alkoxylated linear alcohol; (c) from about 11 to about 19% by weight of linear alkyl sulfonate; (d) from about 1 to about 5% by weight of a monoethanolamine; and (e) remainder, water, all weights being based on the total weight of the composition.

Abstract: A cleaning composition and method of use are disclosed. The composition comprises a mixture of a ketone, at least one glycol ether, water and optionally a surfactant. The composition when applied to substrates coated with resinous coatings is effective for removing the coating from the substrate.

Abstract: Improvements in the rate of stripping of alkaline water-in-oil emulsions by incorporating in the organic phase thereof an effective amount of pyrrole.

Abstract: Improvements in the rate of stripping of benzyl alcohol containing water-in-oil emulsions by incorporating in the organic phase thereof an effective amount of anisole.

Abstract: Compositions and methods for removal of polymeric coatings from nonporous surfaces are provided. The method comprises the mixing of two stock solutions, a peroxide/acid solution and an alkaline solution, and immediate application to the surface to be stripped of coating. The applied mixture produces a controlled peroxide oxidation reaction causing the coating to become softened-to-release. A further step of washing or blowing with water, air, cornstarch, or plastic media will remove the softened-to-release coating. The two stock solutions are stable to storage and, when in use, are continuously mixed in a volume so as to control reaction rate, pH, corrosivity of the coating remover, and reaction rate with the coating.

Abstract: Improvements in the retardation of water evaporation from benzyl alcohol containing water-in-oil emulsions by incorporating in the organic phase thereof an effective amount of a terpene.

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: A floor stripper composition is provided, having a pH-value above 9.0, and comprising a soap, water and a glycine-N,N-diacetic acid compound, which is preferably methylglycine diacetic acid (MGDA). The diacetic acid is desirably in the form of a divalent metal complex thereof. A process is also provided for removing a zinc containing acrylate polymer film from a floor surface, wherein a floor stripper composition of the invention is applied. A good floor stripper performance could be obtained with this composition owing to its low foaming behaviour.

Abstract: The present invention relates to a cleaning compound comprising, by volume:1% to 99% of at least one compound (a) comprising a straight or branched hydrocarbon chain which is saturated or which has at least one unsaturation, and comprising at least two aryl or alkylaryl radicals, the aromatic nucleus of at least two aryl and/or alkylaryl radicals comprising 6 carbon atoms.99% to 1% of at least one polar aprotic compound (b) which is at least partly soluble in water and in compound (a).

Abstract: Methods and compositions useful for removing a titanium dioxide-containing material located on a surface, for example, a surface of a piece of process equipment, are disclosed. In one embodiment, the present methods provide for contacting the titanium dioxide-containing material located on the surface with a composition comprising at least about 20% by weight of water, an acid component in an amount effective to reduce the adhesion between the titanium dioxide-containing material and the surface; and an organic component in an amount effective to disperse the titanium dioxide-containing material in the composition.

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: 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 cleaning composition to remove unwanted paint, graffiti or other coatings from a substrate comprises 40-90 wt. % of a five-membered ring lactam, such as N-methyl-2-pyrrolidone, and 10-60 wt. % of a glycerol triester of a C1-C4 saturated aliphatic monocarboxylic acid. Additionally, up to 25 wt. % of the composition of diethylphthalate, diisopropyl adipate and/or a C1-C4 alkyl lactate may be present. Also a method of cleaning substrates and woven or non-woven tissue impregnated with the cleaning composition has been claimed.

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: A cleaning composition including a terpene such as D-limonene and hydrogen peroxide in a surfactants based aqueous solution. The composition in various specific formulations is a micro-emulsion useful for a variety of materials and for both industrial and household applications.

Abstract: The invention teaches an aqueous stripping composition that is essentially free of any hydroxylamine compounds. The composition consists essentially of an aqueous mixture of monoethanolamine and preferably includes an inhibitor. The composition is particularly useful for cleaning substrates containing organic residues.

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.

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: 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: A cleaning composition including a terpene such as D-limonene and hydrogen peroxide in a surfactants based aqueous solution. The composition in various specific formulations is a micro-emulsion useful for a variety of materials and for both industrial and household applications.