Abstract: A detergent composition which is liquid at application temperature includes a hydrophobic surfactant system in combination with an aqueous component which is maintained in solution without gellation by an effective amount of N-methyl pyrrolidone. The N-methyl pyrrolidone allows the aqueous component preferably an aqueous solution of hydrogen peroxide to mix with the surfactant blend without causing the surfactant blend to gel. The N-methyl pyrrolidone can also be used to achieve similar results with other aqueous detergent components.
Type:
Grant
Filed:
September 18, 2001
Date of Patent:
April 29, 2003
Assignee:
Washing Systems, Inc.
Inventors:
Ryan Coggeshall, Bryon Ohmart, Andrew Weber
Abstract: A detergent composition which is liquid at application temperature includes a hydrophobic surfactant system in combination with an aqueous component which is maintained in solution without gellation by an effective amount of N-methyl pyrrolidone. The N-methyl pyrrolidone allows the aqueous component preferably an aqueous solution of hydrogen peroxide to mix with the surfactant blend without causing the surfactant blend to gel.
Type:
Application
Filed:
September 18, 2001
Publication date:
April 17, 2003
Applicant:
Washing Systems, Inc.
Inventors:
Ryan Coggeshall, Bryon Ohmart, Andrew Weber
Abstract: Wastewater from a commercial laundry is treated by adding coagulant directly to the wastewater from each load of items washed. The amount of coagulant is administered using a controller. The controller in turn is programmed with an amount of coagulant which should be added based on the type of item being washed. The same controller can be used to inject the detergent into the washing apparatus. Thus the operator of the laundry simply enters the type of item being washed into the controller. This will automatically control both the amount of detergent added to the laundry as well as the amount of coagulant added to the wastewater discharged from the washing apparatus.
Type:
Grant
Filed:
June 2, 1999
Date of Patent:
June 5, 2001
Assignee:
Washing Systems, Inc.
Inventors:
Roy A. Praechter, David Tibbitts, Andrew J. Weber