Acidic cleaning compositions

Details Acidic cleaning compositions Acidic cleaning compositions

C - Chemistry, Metallurgy

11

D

C11D 3/20 (2006.01) C11D 3/02 (2006.01) C11D 3/34 (2006.01) C11D 3/37 (2006.01) C11D 7/08 (2006.01) C11D 7/26 (2006.01)

Patent

CA 2228758

Compositions are described which are aqueous cleaning compositions for removing limescale on hard surfaces which comprise maleic acid, an acid which has a first pKa not exceeding 5, or mixtures thereof, and an acid-stable thickener. Said compositions exhibit improved limescale removal performance and improved surface safety when used to treat hard surfaces. Said compositions are particularly suitable to be used for removing limescale in large appliances like automatic dish washers and washing machines.

On décrit des compositions de nettoyage aqueuses, destinées à enlever le tartre de carbonate de calcium sur des surfaces dures, et qui comprennent de l'acide maléique, un acide dont un premier pKa n'excède pas 5, ou des mélanges de ces acides, ainsi qu'un épaississant, stable dans l'acide. Ces compositions démontrent des propriétés améliorées d'enlèvement du tartre de carbonate de calcium et une meilleure sécurité quant au respect des surfaces lorsqu'on utilise ces compositions pour traiter des surfaces dures. Ces compositions sont notamment appropriées à l'enlèvement du tartre de carbonate de calcium dans de gros appareils ménagers tels que des lave-vaisselle et des lave-linge.

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