The Clorox Company

Other

Brian P Argo

Clement K Choy

Kevin J Brodbeck

Aram Garabedian

Lynn M Hearn

Amy M Penticoff

Shona L Nelson

The present invention provides an abrasive-free cleaning composition which includes, in aqueous solution, a bleach, a colloidal thickener, and a source of divalent ionic calcium. The composition further includes at least one surfactant which is effective to provide cleaning activity and, in association with the colloidal thickener, thickening. The composition also includes an electrolyte/buffer which is effective to promote an environment in which the thickener and the surfactant associate to provide proper thickening. The inventive cleaning composition, with its ionic calcium source, has desirable viscosity and rheological properties, and demonstrates significant viscosity stability, rheological stability, phase stability and bleach stability. The cleaning composition maintains these desirable properties under typical storage conditions as well as over extended times and at elevated temperatures. The present invention also provides a method of preparing an abrasive-free cleaning composition and a method of cleaning a substrate with an abrasive-free cleaning composition. The present invention further provides a composition having the above-mentioned advantages, which is particularly useful in the cleaning of ceramic substrates, such as toilet bowls, and has additional advantages for this application.

Thickened aqueous composition for the cleaning of a ceramic surface and methods of preparation thereof and cleaning therewith

The invention provides a bleaching gel cleaner and a method for preparing it, said cleaner comprising: a) an effective amount of a hypochlorite-generating compound; b) a ternary thickening system which comprises: (i) alkali metal soap; (ii) a hydrotrope selected from the group consisting of trialkylamine oxides, betaines and mixtures thereof; and (iii) a bleach stable solvent, each in amounts appropriate to create a gelled composition; c) a buffer/electrolyte in an amount effective to stabilize the hypochlorite; and d) the remainder as water.

Bleaching gel cleaner thickened with amine oxide, soap and solvent

A method of testing a material without the use of animals to determine the potential of the material to harm human or animal cells due to contact includes forming a biomembrane having at least some constituent matter of human or animal tissue, applying a quantity of material to the membrane, maintaining the biomembrane and quantity of material in contact for a period of time, and monitoring the change in the physical properties of the biomembrane caused by the quantity of material.

Method of testing a material without the use of animals to determine the

The invention provides a phase stable, thickened aqueous abrasive cleanser and a method for preparing it, said cleanser comprising:

Phase stable, thickened aqueous abrasive bleaching cleanser

The present invention provides an abrasive-free cleaning composition which includes, in aqueous solution, a bleach, a colloidal thickener, and a source of divalent ionic calcium. The composition further includes at least one surfactant which is effective to provide cleaning activity and, in association with the colloidal thickener, thickening. The composition also includes an electrolyte/buffer which is effective to promote an environment in which the thickener and the surfactant associate to provide proper thickening. The inventive cleaning composition, with its ionic calcium source, has desirable viscosity and rheological properties, and demonstrates significant viscosity stability, rheological stability, phase stability and bleach stability. The cleaning composition maintains these desirable properties under typical storage conditions as well as over extended times and at elevated temperatures. The present invention also provides a method of preparing an abrasive-free cleaning composition and a method of cleaning a substrate with an abrasive-free cleaning composition.

Thickened aqueous cleaning composition and methods of preparation

The present invention concerns a thickened viscoelastic cleaning formulation comprising, in aqueous solution: (a) an active cleaning compound; and (b) a viscoelastic thickening system comprising a tetradecyldialkylamine oxide and a hydrophobic organic counterion; wherein the formulation has a viscosity of at least 500 cP at 20.degree. C. The present invention is characterized as a means for reducing the characteristic 'bleach odor' found in hypochlorite cleaning compositions of the prior art, particularly those which are volatilized upon dispensing. The compositions of the present invention may further be formulated to have utility as a hard surface cleaner, or as a drain opener.

Composition and method for developing extensional viscosity in cleaning

A method of making a hard surface abrasive scouring cleanser, in steps comprising making an aqueous solution of nonionic surfactant and pH adjusting agent; making a slurry of water and a calcium carbonate abrasive, and allowing the slurry to degas; adding the slurry of to the aqueous solution slowly with gentle mixing and allowing the resultant mixture to degas; and adding a quantity of cross-linked polyacrylate and any other adjunct ingredients. The cleanser has no significant syneresis, undue viscosity or yield stress increase, stably suspends abrasives, and has excellent rinsing characteristics.

Thickened aqueous abrasive cleanser with improved rinsability

The invention is a hard surface abrasive scouring cleanser having no significant syneresis, undue viscosity or yield stress increase, stably suspends abrasives, and has excellent rinsing characteristics. Furthermore, the present invention provides a stably suspended abrasive scouring cleanser which uses relatively small amounts of surfactants, thus lowering the total cost of producing these cleansers. The lesser amount of surfactant also affords the cleanser a milder feel and lower unaesthetic surfactant odor, while also requiring lower levels of fragrance. The absence of solvents results in a less irritating product as well. In one aspect the invention comprises, in aqueous solution:

A thickened aqueous abrasive scouring cleanser containing bleach which is capable of stably suspending abrasives, has excellent bleach half-life stability, little or no syneresis and maintains these advantages over extended times and at elevated temperatures and comprises, in aqueous solution:

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Tracy, CA, United States of America

Brian P Argo