Method of laundering industrial garments
AssigneeWashing Systems, LLC
InventorsMatt PRAECHTER, Roy PRAECHTER, Dave TIBBITTS
Life of this patent
Estimating the term…
Abstract
Metallic based oily soils can be removed from garments by subjecting the garments to a pre-wash in an aqueous solution of a hydroxy diphosphonic acid such as HEDP under acidic conditions. Pre-washing the garments in the aqueous solution of HEDP at about 100 to 212 degrees Fahrenheit for about 15 minutes effectively removes the greasy soils, allowing them to be further laundered with an alkaline detergent composition.
Claims10
A method of laundering garments comprising subjecting said garments to a pre-wash, said pre-wash including an aqueous solution of a hydroxy diphosphonic acid at an acidic pH for a time and temperature effective to cause removal of metallic based oily soils.
Dependencies are inferred from the claim text.