The invention relates to a method for cleaning a synthetic surface, in particular to remove metal dirt and/or particles therefrom, said method being characterized by the following steps: a) the synthetic surface is rinsed with deionized water; b) the synthetic surface is rinsed with electrolyzed water; and c) the synthetic surface is rinsed with deionized water.

An object of the present invention is to provide a biological corrosion inhibitor for a metal, which exhibits the effect at a low concentration and is superior in biodegradability. A biological corrosion inhibitor for a metal including 3-methylglutaraldehyde as an effective ingredient is provided.

An object of the present invention is to provide a biological corrosion inhibitor for a metal, which exhibits the effect at a low concentration and is superior in biodegradability. A biological corrosion inhibitor for a metal including 3-methylglutaraldehyde as an effective ingredient is provided.

The invention relates to compositions and methods of treatment employing compositions comprising polyelectrolyte complexes. The compositions include a water-soluble first polyelectrolyte bearing a net cationic charge or capable of developing a net cationic charge and a water-soluble second polyelectrolyte bearing a net anionic charge or capable of developing a net anionic charge. The total polyelectrolyte concentration of the first solution is at least 110 millimolar. The composition is free of coacervates, precipitates, latex particles, synthetic block copolymers, silicone copolymers, cross-linked poly(acrylic) and cross-linked water-soluble polyelectrolyte. The composition may be a concentrate, to be diluted prior to use to treat a surface.

A fluorine-free cleaning agent is a water-based cleaning agent. The fluorine-free cleaning agent comprises of water, organic solvent and amine compound, wherein the mass of the organic solvent is 15-85% of the mass of the fluorine-free cleaning agent; and the mass of the amine compound is 5-50% of the mass of the fluorine-free cleaning agent. The fluorine-free cleaning agent further comprises of one or more of corrosion inhibitor, acid compound and alcohol compound. By means of a synergistic effect of the specific amine compound and one or more of corrosion inhibitor, acid and alcohol, the fluorine-free cleaning agent provided in the present disclosure showed good cleaning capability even without fluoride by comparing with the prior art.

A method and cleaning solution for cleaning electronic substrates, such as a semiconductor wafers, hard disks, photomasks or imprint molds. The method comprises the steps of contacting a surface of the substrate with a cleaning solution comprised of a polyphosphate, and then removing the cleaning solution from the surface. Additional optional steps include applying acoustic energy to the cleaning solution while the cleaning solution is in contact with the surface, and removing the cleaning solution from the surface by rinsing the surface with a rinsing solution with or without the application of acoustic energy. The cleaning solution comprises a polyphosphate, such as any of the water soluble polyphosphates. Depending on the application, the cleaning solution may also comprise a base and/or a quantity of suspended particles. Complexing agents, amines, biocides, surfactants and/or other substances, may also be added to the cleaning solution.

A method for cleaning a plastic's surface so as to effect removing metallic particulate contaminants from the plastic's surface, including rinsing the plastic's surface with electrolyzed water, anodic water, cathodic water, or ozone, so as to remove positive charges left on the plastic's surface by the anodic water, and then rinsing the plastic's surface with deionized water; wherein the rinsing of the plastic's surface with the electrolyzed water, anodic water, cathodic water, or ozone, and then the deionized water effects cleansing of the plastic's surface to a predetermined cleanliness value.

The invention relates to compositions and methods of treatment employing compositions comprising polyelectrolyte complexes. The compositions include a water-soluble first polyelectrolyte bearing a net cationic charge or capable of developing a net cationic charge and a water-soluble second polyelectrolyte bearing a net anionic charge or capable of developing a net anionic charge. The total polyelectrolyte concentration of the first solution is at least 110 millimolar. The composition is free of coacervates, precipitates, latex particles, synthetic block copolymers, silicone copolymers, cross-linked poly(acrylic) and cross-linked water-soluble polyelectrolyte. The composition may be a concentrate, to be diluted prior to use to treat a surface.

A process for imparting scent to air comprising the steps of: providing a plurality of particles in a reservoir; heating the reservoir to melt the particles to form a melt; and contacting the melt with air; wherein the particles include polyethylene glycol, perfume, and starch granules and each particle has a mass between about 0.95 mg and about 5 grams.

Proposed is a lacquer for treating a 3D printing-created printed matter that is configured to contain a perfluorinated acrylic resin having a relatively high surface hardness and excellent water resistance and contamination resistance, as well as an excellent force of adhesion to a printing resin making up a 3D printed matter. While the 3D printed matter that is printed through a photocuring-type 3D printer is cleaned and rinsed, an uncured resin remaining on the 3D printed matter is removed, and at the same time, a protective film layer is formed on a surface of the 3D printed matter by being coated thereon. As a result, the surface of the 3D printed matter is protected from damage during a post curing process. Furthermore, the 3D printed matter, which is to be manufactured, is also effectively safeguarded against quality degradation that is caused by contamination through the surface thereof and subsequent discoloration.