A cleaning device 2 is for performing a preliminary cleaning step 110 to a cleaning step 120 of a cleaning method 100, and includes a preliminary cleaning tank 11 containing a preliminary cleaning agent LQ1, a cleaning tank 12 containing a cleaning agent LQ2, an outer container 21 containing the preliminary cleaning tank 11 and the cleaning tank 12, a temperature adjustment unit 30 for adjusting the temperature of water WT contained in the outer container 21, an ultrasonic unit 40 for applying an ultrasonic wave to the water WT, or to the preliminary cleaning agent LQ1 or the cleaning agent LQ2 through the preliminary cleaning tank 11 or the cleaning tank 12, and a controller 80 controlling each of the units.

The present invention provides a method for washing a hard article, the method including: the contact step of bringing a detergent liquid obtained by mixing (a) a potassium internal olefin sulfonate and (b) water having a hardness of 5° DH or more, into contact with the hard article, and the step of rinsing the hard article after the contact step with water having a hardness of 5° DH or more, wherein the detergent liquid at 30° C. or more is brought into contact with the hard article in at least a part of the contact step.

Compositions or finishing solutions configured to remove unwanted material, such as uncured material or resin, from additively manufactured objects are disclosed herein, in one example, the finishing solution includes a first glycol ether and a second glycol ether and/or a high flash point hydrocarbon, wherein the finishing solution has a flash point of at least 93.3° C. In alternative examples, the finishing solution may also include a third glycol ether, a high flash point alcohol, and/or an acetate of a glycol ether.

A method of simultaneously maximizing the mildness and cleaning performance of a liquid dishwashing composition includes the steps of: A. forming the composition that has a pH of greater than about 7 and up to about 11, that comprises sodium laureth sulfate, an amine oxide, and optionally cocamidopropyl betaine, and that is substantially free of sodium lauryl sulfate; and B. subjecting a sample of the composition to a Zein test, a corneosurfametry (CSM) test, and an in vitro cytokine release test for IL-1α response, respectively,

wherein the sample exhibits a Zein score of from about 0.1 to about 2.5, a CSM test value of from about 10 to about 35, and a cytokine release test value of from about 100 to about 600.

According to the invention, the compositions and methods provide for the complete removal of labels, synthetic glues and/or adhesives from a plurality of surfaces through the use of an aqueous or non-aqueous basic organic solvent and/or an amidine, optionally in combination with surfactants, chelants, acidulants and/or additional bottle wash additives. Beneficially, the compositions and methods are suitable for use at lower temperatures and pH conditions, along with under caustic-free and/or reduced caustic conditions to effectively remove such labels, synthetic glues and/or adhesives from a surface within less than about 30 minutes.

A substrate or coating is provided that includes a protease with enzymatic activity toward a component of a biological stain. Also provided is a process for facilitating the removal of a biological stain is provided wherein an inventive substrate or coating including a protease is capable of enzymatically degrading of one or more components of the biological stain to facilitate biological stain removal from the substrate or said coating.

Described herein are aqueous cleaning compositions comprises a combination of polyalkylenimine and an acid, a surfactant, and a solvent mixture. Methods of making and using the same are also described.

The processing system (1) is provided with an etching tank (2) and a circulation pipe (7) that exits from the bottom portion of the etching tank (2) and returns to the etching tank (2). The circulation pipe (7) is provided with a liquid feed pump (8), a heat exchanger (9), a sulfuric acid concentration meter (10), and an oxidant concentration meter (11). The sulfuric acid concentration meter (10) and the oxidant concentration meter (11) can transmit measurement results to a calculation/control device (12). The etching tank (2) can be replenished with hydrogen peroxide water, sulfuric acid, and pure water through a hydrogen peroxide water supply line (13), a sulfuric acid supply line (14), and a pure water supply line (15). The calculation/control device (12) can adjust the supply amounts of hydrogen peroxide water, sulfuric acid, and pure water to respective desired amounts. Such a processing system enables etching of a resin molded article while maintaining both the sulfuric acid concentration and the oxidant concentration of a sulfuric acid solution that is free from hexavalent chromic acid or permanganic acid and contains an oxidizing substance obtained by mixing sulfuric acid and hydrogen peroxide water.

An automatic dishwashing cleaning composition having a new protease.

Methods of dishwashing to remove soils are disclosed, including a first detergent wash step, wherein the detergent is substantially-free of water conditioning agents including polycarboxylic acid polymers and phosphonates, followed by a second step of rinsing under high temperature with a water conditioning agent, namely polycarboxylic acid polymers. The methods result in little to no precipitation forming on the treated ware due to the treating of the hard water before it contacts the alkalinity source which prevents precipitation and/or flocculation from occurring.