Abrasive cleaning composition

C - Chemistry – Metallurgy – 11 – D

Patent

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Details

C11D 3/30 (2006.01) C11D 1/83 (2006.01) C11D 3/10 (2006.01) C11D 3/12 (2006.01) C11D 3/14 (2006.01) C11D 3/18 (2006.01) C11D 3/43 (2006.01) C11D 17/00 (2006.01)

Patent

CA 2287233

The invention provides a liquid abrasive cleaning composition of pH 7-13 which comprises: a) 0.1-20 wt.% of one or more surfactants forming a suspending system, b) 2-80 wt.% one or more suspended abrasives, c) 0.5-10 wt.% of a C2- C6 alkanolamine, and, d) 0.25-10 wt.% of a hydrocarbon co-solvent. The alkanolamine acts both as a base and a solvent which improves cleaning and so allows the level of suspended abrasive to be reduced so as to reduce the possibility of damage to surfaces and improve rinsing performance. It is believed that the presence of the hydrocarbon co-solvent is required to maintain the stability of the compositions at extremes of temperature.

L'invention concerne une composition nettoyante abrasive liquide à pH compris entre 7 et 13, qui contient: a) entre 0,1 et 20 % en poids d'un ou de plusieurs tensioactifs formant un système en suspension, b) entre 2 et 80 % en poids d'au moins un abrasif, c) entre 0,5 et 10 % en poids d'alcanolamine C¿2?-C¿6?, et d) entre 0,25 et 10 % en poids d'un cosolvant hydrocarbure. L'alcanolamine fait à la fois office de base et de solvant, ce qui améliore le nettoyage et permet de réduire le niveau d'abrasif en suspension, de manière à réduire le risque d'altération des surfaces à nettoyer et à améliorer les performances en termes de rinçage. Il est supposé que la présence du cosolvant hydrocarbure est nécessaire pour maintenir la stabilité des compositions à des extrêmes de température.

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