This invention is related to a process for purification of metallic objects comprising an oil-adsorbing step in the presence of a liquid and a layer silicate component.

The present invention provides a solvent composition that can inhibit corrosion of a metal, a cleaning method using the solvent composition, and a method for producing an article provided with a coating film. The solvent composition of the present invention comprises 1-chloro-2,3,3-trifluoropropene and a specified second component, and is characterized in that the proportion of the total amount of the content of the second component to the sum of the content of 1-chloro-2,3,3-trifluoropropene and the total amount of the content of the second component is from 0.0001 to 1.0 mass %.

The present invention relates to the use of a carboxylic-acid-containing cleaning agent for removing stains of vegetable origin and/or for decontaminating surfaces contaminated by plant-protection agents. The agent comprises 20-60 wt. % of an aliphatic C.sub.1-C.sub.10 carboxylic acid, preferably formic acid, or a mixture of two or more of such aliphatic carboxylic acids which preferably comprises formic acid, at least one surfactant, preferably an anionic surfactant and/or at least one non-ionic surfactant, and water and/or solvent as the remainder. In another aspect, the present invention relates to specific carboxylic-acid-containing cleaning agents for hard surfaces, which agents are particularly suitable for the intended use.

The need for an acidic liquid hard surface cleaning composition which provides improved removal of grease residues, while still being effective at removing limes-scale, is met by formulating an acidic liquid hard surface cleaning composition with an alkyl pyrrolidone, and additional nonionic surfactant selected from the group consisting of: alkoxylated nonionic surfactant, alkyl polyglucoside, and mixtures thereof, while limiting the amount of anionic surfactant present.

A solid hard surface cleaning composition suitable for replacing liquid formulations while providing at least equivalent or enhanced cleaning performance, including at lower concentrations, is provided. The solid hard surface cleaning compositions include alkali metal carbonate alkalinity source(s), aminocarboxylic acid chelant(s), amphoteric surfactant(s), polyacrylate polymer(s) and anionic surfactant(s). The solid hard surface cleaning compositions can include additional functional ingredients, such as corrosion inhibitors. The solid hard surface cleaning compositions do not include hydroxide alkalinity and beneficially provide stable ready-to-use formulations that are safe for contact without the use of personal protective equipment (PPE) and are compatible with soft metals.

Described herein are compositions and methods that impart a hydrophobic finish to surfaces, such as, for example, automotive surfaces. The compositions comprise an amino functional silicone emulsion, an amphoteric surfactant, and, a non-ionic surfactant.

Cleaning solution for cleaning and/or wetting metal surfaces, comprising at least one acid, a first surfactant, which is an alkyl-poly(ethyleneglycol-co-propyleneglycol)-ether having a cloud point of ≤25° C., a second surfactant, which is selected from the group consisting of i) an alkyl-poly(ethyleneglycol-co-propyleneglycol)-ether having a cloud point of ≥30° C., ii) an alkyl-polyethyleneglycol-ether having a cloud point of ≥45° C.
wherein the cloud points are determined according to European Standard EN 1890:2006, item 8.2 of German Version, with the modification that 10 wt % H.sub.2SO.sub.4 is used as solvent and that the concentration of the surfactant is 1000 mg/L.

A nonflammable aerosol composition for washing various types of car/vehicle is of low toxicity, which has little environmental impact in terms of depletion of the ozone layer and so forth, which has a washability as good as or better than conventional products such as has been unattained by aqueous products or high-flash-point products, which permits achievement of appropriate drying characteristics, and which, while preventing erosion of rubbers and resins, causes dirt components to be moistened and washed off and away therefrom by the detergent composition, and which permits accommodation of mechanization by virtue of its being capable of being sprayed thereonto from a roughly constant distance therefrom, said aerosol composition for washing is made to contain (Z)-1-chloro-3,3,3-trifluoropropene and gas propellant which is N.sub.2, compressed air, CO.sub.2, argon, or a mixture of two or more thereof.

Embodiments of the present methods and solutions that operate to prepare a metal surface to be ready for coating or primer. The surface is operated on using mechanical or pressure impingement operation in conjunction with application of medium comprising dimethylethanolamine (DMEA) and water (DMEA diluted in water). Embodiments of the present invention can perform the wash or decontamination to leave a clean surface that provides excellent performance in durability and rust resistance after being coated or primed. Other cleaning chemicals if added may reduce the performance and interfere with the desired objective. Other surfaces are contemplated.

Cleaning and degreasing compositions containing a diutan gum thickener are provided for removing burnt on, polymerized, carbonized food soils with minimum manual effort. The compositions are ready to use compositions and beneficially remain on a treated surface for sufficient time to permit soil penetration without drying out. The compositions can be easily removed with minimal manual effort, such as use of low pressure water applied to the treated surface, and beneficially do not leave residues. Methods for cleaning and degreasing a surface with the compositions are also provided. Thickening systems employing the diutan gum and laponite clays are also provided.