Anti-foam system for automatic dishwashing compositions

Details Anti-foam system for automatic dishwashing compositions Anti-foam system for automatic dishwashing compositions

C - Chemistry, Metallurgy

11

D

C11D 1/83 (2006.01) C11D 1/37 (2006.01) C11D 3/00 (2006.01) C11D 3/20 (2006.01) C11D 3/386 (2006.01) C11D 3/39 (2006.01) C11D 3/395 (2006.01) C11D 10/04 (2006.01) C11D 1/04 (2006.01) C11D 1/14 (2006.01) C11D 1/22 (2006.01) C11D 1/28 (2006.01) C11D 1/29 (2006.01) C11D 1/66 (2006.01) C11D 1/72 (2006.01)

Patent

CA 2232582

An automatic dishwashing detergent composition is described which comprises 0.01 to 1.0 % of a fatty acid having from 12 to 22, preferably from 16 to 18, carbon atoms in the acyl radical and are preferably unsaturated; 0.1 to 2 % of a carrier containing a ketone which has at least 25 carbon atoms; 0.5 to 40 % of a surfactant; 0.1 to 10 weight % of a proteolytic enzyme; 1 to 30 weight % of a bleaching agent selected from the group of a peroxygen or hypohalite agent; and 1 to 75 % of a builder providing a composition having a pH of less than about 11. Specifically, the detergent composition must have a weight ratio of long-chain ketone/carrier to fatty acid of 5:1 to 1:1, preferably from 4:1 to 2:1. A method of using the composition is also described.

On décrit une composition détergente destinée au lavage automatique de la vaisselle et qui comprend 0,01 à 1,0 % d'un acide gras possédant 12 à 22, de préférence 16 à 18 atomes de carbone dans le radical acyle, cet acide gras étant préférablement insaturé; 0,1 à 2 % d'un excipient contenant une cétone, laquelle possède au moins 25 atomes de carbone; 0,5 à 40 % d'un tensioactif; 0,1 à 10 % en poids d'une enzyme protéolytique; 1 à 30 % en poids d'un agent de blanchiment choisi parmi un agent peroxygène ou hypohalite; et 1 à 75 % d'un adjuvant permettant d'obtenir une composition dont le pH est inférieur à environ 11. Plus particulièrement, cette composition de détergence doit présenter un rapport pondéral entre cétone à chaîne longue/excipient et acide gras, qui soit compris entre 5:1 et 1:1, et de préférence entre 4:1 et 2:1. On décrit également un procédé d'utilisation de cette composition.

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