Method for spray cleaning painted surfaces
AssigneeS. C. Johnson & Son, Inc.
InventorDerek J. Fox
Life of this patent
Estimating the term…
Abstract
A cleaning composition and method for removing road film from transportation vehicles without the necessity of mechanical brushing or wiping of the surface using high pressure spray equipment. The composition comprises 2 to 30% by weight of chelating agent; 1 to 12% by weight of a bis(ethoxylated) quaternary ammonium compound; 0.5% to 5% by weight ethoxylated alcohol nonionic; 0-5% by weight sodium metasilicate and water. This concentrate is diluted with water and applied to the surface at a pressure of above 400 psi.
Claims7
A method of cleaning large painted surfaces without damaging the paint comprising spraying the surface at a pressure of 400 to 1000 psi with an aqueous composition comprising 0.02 to 3% by weight of a chelating agent, from about 0.01 to 1.2% of a bis(ethoxylated) quaternary ammonium compound having a degree of ethoxylation of from 10 to 60 moles of ethylene oxide, from 0.005 to 0.5% of an ethoxylated alcohol, nonionic surfactant, from 0 to 0.5% by weight sodium metasilicate and the balance comprising water.
A method of cleaning large painted surfaces which comprises
- (a) mixing a concentrate having a composition comprising from about 2-30% by weight of a chelating agent, from about 1 to 8% by weight of a bis(ethoxylated) quaternary ammonium compound having a degree of ethoxylation of from 10 to 60 moles ethylene oxide, from about 0.5-5% by weight of an ethoxylated alcohol, nonionic surfactant, from 0-5% by weight of sodium metasilicate and the balance comprising water, with water in a ratio of concentrate to water of 1:10 to 1:100;
- (b) spraying the mixture onto the surface to be cleaned at a pressure of above 400 psi;
- (c) rinsing the surface with water at a pressure of above 400 psi.
Dependencies are inferred from the claim text.