Abstract: An aqueous liquid composition containing dihydrogen phosphate salt, surfactant(s), and a dual coordinate bonding agent for iron cleans soiled metal surfaces without damaging any plastic parts that come into contact with the composition, supporting the growth of bacteria that cause unpleasant odors, or obscuring the transparency of any transparent window that it contacts. The composition is particularly useful for cleaning unpainted aluminum sided rail transport cars that have polycarbonate housings insulating electrical contact points that provide motive electric power to the cars; many conventional aqueous alkaline and acid cleaners promote stress cracking of polycarbonate plastics.

Abstract: An aqueous liquid composition containing dihydrogen phosphate salt, sulfur containing surfactant, and preferably a small amount of phosphoric acid cleans soiled metal surfaces without damaging any plastic parts that come into contact with the composition with the composition and without supporting the growth of bacteria that cause unpleasant odors. The composition is particularly useful for cleaning unpainted aluminum sided rail transport cars that have polycarbonate housings insulating electrical contact points that provide motive electric power to the cars; many conventional aqueous alkaline and acid cleaners promote stress cracking of polycarbonate plastics.

Abstract: An aqueous liquid composition containing dihydrogen phosphate salt, surfactant(s), and a dual coordinate bonding agent for iron cleans soiled metal surfaces without damaging any plastic parts that come into contact with the composition, supporting the growth of bacteria that cause unpleasant odors, or obscuring the transparency of any transparent window that it contacts. The composition is particularly useful for cleaning unpainted aluminum sided rail transport cars that have polycarbonate housings insulating electrical contact points that provide motive electric power to the cars; many conventional aqueous alkaline and acid cleaners promote stress cracking of polycarbonate plastics.

Abstract: An aqueous liquid composition containing acid fluoride ions (i.e., HF.sub.2.sup.-) not derived from hydrogen fluoride, together with an acid stronger than acid fluoride ions, and, preferably, surfactant, is very effective in brightening unpainted metal surfaces such as those of stainless steel and aluminum without reducing the transparency of any glass objects such as windows with which the composition may come into contact. Otherwise similar compositions containing aqueous hydrofluoric acid usually etch glass in such a way as to reduce its transparency. The invention is particularly useful for brightening soiled or otherwise darkened surfaces of rail passenger cars.

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: 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 composition and method for stripping protective coatings from surfaces, particularly metal surfaces such as aluminum, without blemishing the metal surface comprises a silicate-containing, alkaline component and a product of chemical interaction in solution between silicate and acid other than silicic acid in an amount to inhibit attack of the substrate being cleaned or to which the coating was applied. Preferably the acid reacted with the silicate is gluconic, or most preferably, boric acid.

Abstract: Described is a composition capable of stripping protective and/or decorative coatings from a substrate comprising:a major amount of a chlorinated hydrocarbon having from one to four carbon atoms;a minor amount of a carboxylic acid accelerator useful for accelerating removal of the coating; andan effective amount of a penetrating nitrogen containing amine oxide surfactant.The compositions are effective for stripping protective coatings as acrylic resins, epoxy resins, vinyl resins, polyester resins and polyurethane resins at ambient temperature.

Abstract: An improved composition and process for denaturing or "killing" captured high-solids paint particles in aqueous wash solutions employed in gas scrubbing devices such as paint spray booths for extracting entrained particulated contaminants from the exhaust air stream. The invention is based on the discovery of adding and dispersing wash solution insoluble particles of a relatively fine particle size in such aqueous wash solutions in amounts which are effective to coact with and coagulate the captured high-solids paint particles entrained in the wash solution effecting a denaturing thereof and converting them from a sticky adherent consistency to a nontacky putty-like consistency whereby they remain entrained in the wash solution and subsequently can be extracted by flotation and skimming.

Abstract: Disclosed is a method and composition useful for stripping paint films. The stripping composition is phenolfree and contains a synergistic combination of amine compounds in an aqueous alkaline solution and stripping is effected by contacting the surface with the solution.