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US 8,802,611 B2Granted
Highly concentrated caustic block for ware washing
AssigneeEcolab USA Inc.
InventorAltony Miralles
Life of this patent
Estimating the term…
Abstract
A system for cleaning ware includes a detergent composition and a rinse solution. The detergent composition includes an alkali metal hydroxide, a corrosion inhibitor and a surfactant. The detergent includes less than about 1% of an alkali metal carbonate by weight. The rinse solution includes water and a chelating acid.
Claims13
A system for cleaning ware, the system comprising:
- (a) a detergent composition consisting of at least about 80% by weight alkali metal hydroxide, up to about 10% by weight corrosion inhibitor and up to about 10% by weight surfactant, and
- (b) a rinse solution consisting of water and a chelating acid.
A cleaning system for removing soils from a surface and preventing precipitation of water hardness, the cleaning system comprising:
- (a) a caustic detergent consisting of at least about 80% by weight alkali metal hydroxide, up to about 10% by weight corrosion inhibitor and up to about 10% by weight surfactant, and
- (b) a rinse solution consisting of water and a chelating acid.
A method of removing soils from a surface and preventing water hardness deposition onto the surface, the method comprising:
- (a) contacting the surface with a caustic detergent composition, wherein the caustic detergent composition consists of at least about 80% by weight alkali metal hydroxide, up to about 10% by weight corrosion inhibitor and up to about 10% by weight surfactant, phosphorus and alkali metal carbonate;
- and
- (b) subsequently rinsing the surface with a rinse solution consisting of water and a chelating acid.
Dependencies are inferred from the claim text.