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AssigneeAkzo Nobel N.V.
InventorsMahnaz Company, Kornelis Overkempe, Andrianus Marinus Groenewegen
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The present invention relates to the use of an alkyl di(lower alkyl) mono(polyoxyethylene) quaternary ammonium compound as a hydrotrope in 5 aqueous solutions for a nonionic surfactant, preferably a C8-C18-alcohol alkoxylate containing 1-20 ethyleneoxy units and 0-5 propyleneoxy units. It also relates to a composition comprising said quaternary ammonium compound and said nonionic surfactant. The cationic surfactant has the formula 10 R2+R (1) N (CH2CH2O)n H X R1 wherein R=C6-C22 alkyl; R1 and R2 are independently a C1-C4 alkyl group; n=8-25; and X— is an anion. The compositions may be used for the cleaning of hard surfaces, for example for vehicle cleaning or machine dishwashing.
A method of increasing the solubility of a nonionic surfactant in an aqueous media, said method comprising adding to said nonionic surfactant and/or aqueous media a hydrotrope for said nonionic surfactant, said hydrotrope comprising cationic surfactant having the formula
A method of cleaning hard surfaces which comprises applying to said surfaces a cleaning effective amount of the composition of claim 19.
Dependencies are inferred from the claim text.