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
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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.
Claims14
A method of cleaning an article in a door dish machine comprising:
- (A) applying to the article a first alkaline cleaning composition comprising from about 125 to about 5000 ppm of an alkali metal carbonate, an amino-acetate, water, and a nonionic surfactant selected from the group consisting of an EO/PO block copolymer, an alcohol ethoxylate, and mixtures thereof, wherein the first alkaline cleaning composition has a pH from about 10 to about 12;
- (B) providing a first pause;
- (C) applying to the article an acidic cleaning composition, wherein the acidic cleaning composition is applied at a temperature from about 95° F. to about 176° F., the acidic cleaning composition comprising an organic acid, an inorganic acid, urea, a corrosion inhibitor, a bleaching agent, and a surfactant;
- and
- (D) providing a second pause;
- (E) applying to the article a second alkaline cleaning composition comprising from about 125 to about 5000 ppm of an alkali metal carbonate, an amino-acetate, water, and a nonionic surfactant selected from the group consisting of an EO/PO block copolymer, an alcohol ethoxylate, and mixtures thereof, wherein the second alkaline cleaning composition has a pH from about 10 to about 12;
- and
- (F) applying to the article a rinse at a temperature of about 125° F. or higher, the rinse comprising, peroxygen and a hydrotrope.
A method of cleaning an article in a door dish machine comprising:
- (A) applying to the article an alkaline cleaning composition comprising from about 125 to about 5000 ppm of an alkali metal carbonate, an amino-acetate, water, and a nonionic surfactant selected from the group consisting of an EO/PO block copolymer, an alcohol ethoxylate, and mixtures thereof, wherein the alkaline cleaning composition has a pH from about 10 to about 12;
- (B) providing a first pause;
- (C) applying to the article a first acidic cleaning composition, wherein the first acidic cleaning composition is applied at a temperature from about 95° F. to about 176° F., the first acidic cleaning composition comprising an organic acid, an inorganic acid, urea, a corrosion inhibitor, and a surfactant;
- and
- (D) providing a second pause;
- (E) applying to the article the alkaline cleaning composition;
- (F) providing a third pause;
- and
- (G) applying to the article a rinse composition at a temperature from about 125° F. or higher, the rinse composition comprising a peroxygen and a hydrotrope.
Dependencies are inferred from the claim text.