Back to results
US 8,092,613 B2Granted
Methods and compositions for the removal of starch
AssigneeEcolab USA Inc.
InventorsWerner Strothoff, Winfried Troll, Helmut Maier, John P. Furber, Bryan A. Maser, Michael E. Besse
Life of this patent
Estimating the term…
Abstract
A method of warewashing for the removal of starch is described herein. The method includes applying an alkaline composition to a dish, then applying an acidic composition to a dish, and then applying a second alkaline composition to the dish. The method may include additional steps. Compositions for using with the method are also disclosed. Finally, dish machines that may be used in accordance with the method are disclosed.
Claims38
A method of cleaning dishware in an undercounter machine comprising:
- (a) applying to the dishware a first alkaline cleaning agent;
- (b) providing a first pause;
- (c) applying to the dishware a first acidic cleaning agent comprising citric acid, sulfamic acid, a nonionic surfactant and a quaternary ammonium compound;
- (d) applying a second pause;
- and
- (e) applying to the dishware a second alkaline cleaning agent,
- wherein each step lasts from about 2 seconds to about 30 minutes and the undercounter machine is not drained between the application of the first acidic cleaning agent and the application of the second alkaline cleaning agent such that the combination of the first acidic cleaning agent and the second alkaline cleaning agent creates a pH from about 7 to about 9 in the water inside the machine.
4 more elements
A method of cleaning dishware in an undercounter machine comprising:
- (a) applying to the dishware a first alkaline cleaning agent;
- (b) providing a first pause;
- (c) applying a rinse composition to the dishware after the first pause;
- (d) applying to the dishware a first acidic cleaning agent comprising citric acid, sulfamic acid, a nonionic surfactant and a quaternary ammonium compound;
- (e) providing a second pause;
- and
- (f) applying to the dishware a second alkaline cleaning agent,
- wherein each step lasts from about 2 seconds to about 30 minutes and the undercounter machine is not drained between the application of the first acidic cleaning agent and the second alkaline cleaning agent such that the combination of the first acidic cleaning agent and the second alkaline cleaning agent has a pH from about 7 to about 9.
5 more elements
A method of cleaning dishware in a undercounter machine comprising:
- (a) applying to the article a first alkaline cleaning dishware comprising an alkali carbonate;
- (b) providing a first pause;
- (c) applying to the dishware a first acidic cleaning agent comprising citric acid, sulfamic acid, a nonionic surfactant and a quaternary ammonium compound;
- (d) providing a second pause;
- and
- (e) applying to the dishware a second alkaline cleaning agent comprising an alkali carbonate,
- wherein each step lasts from about 2 seconds to about 30 minutes and the undercounter machine is not drained between the application of the first acidic cleaning agent and the second alkaline cleaning agent such that the combination of the first acidic cleaning agent and the second alkaline cleaning agent has a pH from about 7 to about 9.
4 more elements
A method of cleaning dishware in an undercounter machine comprising:
- (a) applying to dishware a first alkaline cleaning agent comprising at least one alkaline carrier and having a pH from about 7 to about 14;
- (b) providing a first pause;
- (c) applying to the dishware a first acidic cleaning agent comprising citric acid, sulfamic acid, a nonionic surfactant and a quaternary ammonium compound at least one acid and having a pH from about 0 to about 7;
- (d) providing a second pause;
- and
- (e) applying to the dishware a second alkaline cleaning agent comprising at least one alkaline carrier and having a pH from about 7 to about 14,
- wherein each step lasts from about 2 seconds to about 30 minutes and the undercounter machine is not drained between the application of the first acidic cleaning agent and the second alkaline cleaning agent such that the combination of the first acidic cleaning agent and the second alkaline cleaning agent has a pH from about 7 to about 9.
4 more elements
A method of cleaning the dishware in an undercounter machine comprising:
- (a) applying to the article a first alkaline cleaning agent;
- (b) applying to the dishware a first acidic cleaning agent comprising citric acid, sulfamic acid, a nonionic surfactant and a quaternary ammonium compound;
- (c) applying to the dishware a second alkaline cleaning agent;
- (d) applying to the dishware a second acidic cleaning agent;
- and
- (e) applying to the dishware a third alkaline cleaning agent,
- wherein each step lasts from about 2 seconds to about 30 minutes and the undercounter machine is not drained between the application of the second acidic cleaning agent and application of the third alkaline cleaning agent such that the combination of the second acidic cleaning agent and the third alkaline cleaning agent has a pH from about 7 to about 9.
4 more elements
A method of cleaning dishware in an undercounter machine comprising:
- (a) applying to dishware a first alkaline cleaning agent;
- (b) providing a first pause;
- (c) applying to dishware a first acidic cleaning agent comprising citric acid, sulfamic acid, a nonionic surfactant and a quaternary ammonium compound;
- (d) providing a second pause;
- (e) applying to dishware a second alkaline cleaning agent;
- (f) providing a third pause;
- (g) applying to dishware a second acidic cleaning agent;
- (h) providing a fourth pause, and
- (i) applying to dishware a third alkaline cleaning agent,
- wherein each step lasts from about 2 seconds to about 30 minutes and the undercounter machine is not drained between the application of the second acidic cleaning agent and application of the third alkaline cleaning agent such that the combination of the second acidic cleaning agent and the third alkaline cleaning agent has a pH from about 7 to about 9.
7 more elements
Dependencies are inferred from the claim text.