	US 12,460,158 B1
	Composition and method for road film removal in a touchless vehicle wash comprising a sodium hypochlorite/anionic surfactant cleaning solution
Lloyd B Snell, New Kensington, PA (US)
Filed by Lloyd B Snell, New Kensington, PA (US)
Filed on Mar. 31, 2025, as Appl. No. 19/096,500.
Int. Cl. C11D 1/37 (2006.01); C11D 1/12 (2006.01); C11D 3/00 (2006.01); C11D 3/04 (2006.01); C11D 3/06 (2006.01); C11D 3/12 (2006.01); C11D 3/33 (2006.01)

CPC C11D 3/046 (2013.01) [C11D 1/12 (2013.01); C11D 3/0047 (2013.01); C11D 3/044 (2013.01); C11D 3/06 (2013.01); C11D 3/1246 (2013.01); C11D 3/33 (2013.01); C11D 2111/14 (2024.01); C11D 2111/44 (2024.01)]

17 Claims

1. A method for washing and drying a vehicle surface using a touchless wash-dry system, the method comprising:

A) a touchless washing step; and

B) a touchless drying step;

wherein the touchless washing step comprises pressure-spraying at least two aqueous solutions to the vehicle surface without subsequent mechanical action by any equipment that touches the vehicle surface; wherein at least one of the two aqueous solutions is a cleaning solution in a concentrate formulation or a ready-to-use formulation comprising:

i) at least one anionic surfactant selected from the group consisting of linear alkyl benzyl sulfonates, alpha olefin sulfonates, secondary alkane sulfonates, alkyl sulfonates, alkyl ether sulfates, phosphate esters, alkyl ethoxy carboxylates, sulfosuccinates, or mixtures thereof;

ii) an additional cleaning agent;

iii) greater than 5 ppm sodium hypochlorite; and

iv) an alkaline agent in an amount sufficient to provide the cleaning solution with a pH of 11.5;

and the drying step (B) comprises using only pressurized air directed at the vehicle surface after the washing step to dry the vehicle surface.