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.

The present invention provides a detergent composition for textile products, containing the following component (A) and component (B): component (A): an internal olefin sulfonate having 16 or more and 18 or less carbons; and component (B): an alkyl sulfate having 12 or more and 14 or less carbons.

A structured liquid detergent composition includes water, an anionic detergent surfactant, and a nonionic detergent surfactant. A ratio of the anionic detergent surfactant to the nonionic detergent surfactant is from about 0.5 to about 20. The structured liquid detergent composition further includes a zwitterionic or amphoteric surfactant and a bacterial-derived cellulose network. The structured liquid detergent composition exhibits improved rheological properties.

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.

A method of improving or stabilizing foaming of a hand dishwashing detergent composition when combined with water is achieved by providing one or more of polyethyleneimine ethoxylate and polyethylene glycol to a hand dishwashing detergent composition comprising an amine oxide. Hand dishwashing detergent compositions to reduce amine oxide content contain water, surfactant base, and foaming booster consisting of amine oxide, and one or more of polyethyleneimine ethoxylate and polyethylene glycol. A foaming booster consisting of polyethyleneimine ethoxylate and polyethylene glycol can eliminate use of amine oxides.

A unit dose detergent pack includes a pouch and a detergent composition encapsulated within the pouch. The detergent composition includes a surfactant component including an alcohol ethoxy sulfate having a C.sub.8-C.sub.20 backbone that is ethoxylated with from about 1 to about 10 moles of ethylene oxide and is present in an amount of from about 5 to about 30 weight percent actives, water present in a total amount of from about 5 to about 30 weight percent, and a particular tertiary amine present in an amount of at least about 0.5 weight percent actives. The detergent composition has a viscosity of less than about 5,000 cps when diluted with additional water at about a 2:1 weight ratio of the detergent composition:water. The block copolymer is incorporated as a rheology modifying agent.

A liquid detergent composition may have a continuous liquid phase and solid particles dispersed in the continuous phase. The continuous phase may be transparent or translucent. The solid particles may be made of a polymeric matrix material, have a diameter ranging from about 0.8 to about 8 mm, and may include a plurality of microcapsules. The plurality of microcapsules may be dispersed in the polymeric matrix material. The microcapsules may have a diameter ranging from about 4 to about 70 70 μm. Use of and methods of use of such a liquid composition are also described.

The invention provides surfactant compounds of formulas I-IX, which can be used in methods for aiding the solubilization, digestion, preparation, analysis, and/or characterization of biological material, for example, proteins or cell membranes. The compounds can also aid in the recovery of peptides generated during protein digestion, particularly for in-gel digestion protocol. Additionally, the compounds can improve enzymatic protein deglycosylation without interfering with downstream sample preparation steps and mass spectrometric analysis. The compounds can be specifically useful as digestion aids that can be decomposed by an acid, by heat, or a combination thereof. Decomposition of the surfactants allows for facile separation from isolated samples, and/or allows for analysis of the sample without interfering with the sensitivity of various analytical techniques.

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 present invention provides a laundry sheet wherein one or more component selected from a group consisting of a builder, an enzyme, a bleaching agent and a bleach activator is contained as a granule in a laundry film prepared using a laundry detergent component and a film-forming water-soluble polymer. The laundry sheet of the present invention completely dissolves in water and thus does not need to be removed after laundering. In addition, the laundry sheet of the present invention has superior cleaning performance, is convenient to use and has superior storage stability.