Thixotropic, acidic cleaning formulation

Details Thixotropic, acidic cleaning formulation Thixotropic, acidic cleaning formulation

C - Chemistry, Metallurgy

11

D

C11D 3/32 (2006.01) C11D 3/12 (2006.01) C11D 17/00 (2006.01)

Patent

CA 2422045

A cleaning formulation comprising a cleaning agent, a particulate clay material and an aqueous carrier. The formulation has a pH less that about 4.0 and is characterized by at least a 90 % reduction in viscosity at 25 ~C at a shear rate of up to about 0.10 s-1. The cleaning formulation is thixotropic and has a highly desirable combination of acid stability, temperature stability, electrolyte stability and ultraviolet radiation stability. Method of cleaning a surface with said cleaning formulation.

L'invention concerne une formulation de nettoyage comprenant un agent de nettoyage, une matière argileuse particulaire et un support aqueux. Cette formulation présente un pH inférieur à environ 4,0 et se caractérise au moins par une réduction de viscosité de 90 % à 25 ·C avec une vitesse de cisaillement inférieure ou égale à environ 0,10 s?-1¿. Ladite formulation de nettoyage est thixotropique et présente une combinaison hautement souhaitable de stabilité à l'acide, de thermostabilité, de stabilité électrolytique et de stabilité au rayonnement ultraviolet. L'invention concerne également un procédé de nettoyage d'une surface au moyen de cette formulation de nettoyage.

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