A parts-washing method is described. The method comprises: (a) contacting a part with an aqueous liquid cleaning composition in a contact zone at a temperature of less than 45 degrees C., wherein the aqueous liquid cleaning composition comprises at least one alkoxylate surfactant; (b) passing at least part of the aqueous liquid cleaning composition from the contact zone to a separation housing; (c) separating the aqueous liquid cleaning composition in the separation housing to form an upper oily phase, an intermediate aqueous phase and a lower particulate phase; and (d) withdrawing at least a portion of the intermediate aqueous phase for use as the aqueous liquid cleaning composition in the contact zone.

Provided is a cleaning agent composition for use in an adhesion process for applying an adhesive to a surface of a first member subjected to a dry treatment without a primer, and adhering a second member to the surface of the first member. The cleaning agent comprises a compound (A) having a (meth)acryloyl group and a liquid (B) having a boiling point of not higher than 200° C.

The present application is directed to water and surfactant-containing liquid washing or cleaning agents containing a hydrophobic precursor compound in microemulsified form, from which a peroxycarboxylic acid or the salt thereof can be released by UV radiation. Methods for washing textiles and cleaning hard surfaces using such precursor compounds are also included.

A bleaching apparatus has an immersing vessel for immersing clothes in a chemical liquid, and a light source for irradiating the clothes immersed in the immersing vessel with light. The chemical liquid may include an oxidizing agent or a reducing agent in a concentration of 3 to 30% owf. The illumination intensity of the light is 10,000 to 70,000 lx.

Systems and methods for cleaning a hard-coated ophthalmic lens and stripping the hard-coating of the hard coated ophthalmic lens in a single pass process are disclosed. The hard-coated ophthalmic lens is sequentially treated with a cleaning solution, an alkaline solution, and a stripping solution. Ultrasonic power is applied to the solutions and the ophthalmic lens during the process. The resulted ophthalmic lens has substantially no sign of chemical attack or residual hard coating or varnishes thereon.

The present disclosure provides a method for cleaning a lanthanum gallium silicate wafer which comprises the following steps: at a step of 1, a cleaning solution constituted of phosphorous acid, hydrogen peroxide and deionized water is utilized to clean the lanthanum gallium silicate wafer with a megahertz sound wave; at a step of 2, the cleaned lanthanum gallium silicate wafer is rinsed and dried by spinning; at a step of 3, a cleaning solution constituted of ammonia, hydrogen peroxide and deionized water is utilized to clean the lanthanum gallium silicate wafer with the megahertz sound wave; at a step of 4, the cleaned lanthanum gallium silicate wafer is rinsed and dried by spinning; and at a step of 5, the rinsed and dried wafer is placed in an oven to be baked. The present invention shortens a period of acidic cleaning process and prolongs a period of alkaline cleaning and utilizes a more effective cleaning with megahertz sound wave to replace the conventional ultrasonic cleaning to solve the issue of cleaning the lanthanum gallium silicate wafer after a cutting process and to improve surface cleanliness of the lanthanum gallium silicate wafer to get a better cleaning effect.

A vehicle-cleaning system and method of cleaning a vehicle are provided, the system comprises a cleaning agent dispenser configured to administer a cleaning agent to a surface of a vehicle for cleaning, wherein the cleaning agent preferably comprises one or more nanoparticulate metal oxide. In one embodiment, the system comprises a chemical agent dispenser configured to separately administer a chemical agent to the surface of a vehicle to react with said cleaning agent to form a resultant foam. The system further comprises an electromagnetic wave emitting system for providing wavelength in a range of about 200 nm to about 380 mn to activate the nanoparticulate metal oxide.