Henkel Ecolab Gmbh Co. Ohg

Henkel Kommanditgesellschaft Auf Aktien

Andreas Potthoff

Siegfried Bragulla

Alfred Laufenberg

Harald Kluschanzoff

Sandra Witt

Wilfried Serve

Mario Ulbl

Brian Glanville

Manfred Klemm

A method for cleaning returnable bottles and similar containers used in the food industry. The method uses an enzymatic solution during the cleaning process. The cleaning results are at least as good as conventional methods, without requiring an increase in the duration of cleaning. The method substantially reduces bottle corrosion and waste water pollution compared to conventional methods.

Method of cleaning returnable bottles

A stabilized liquid enzyme preparation containing a cleaning-active enzyme, a solvent selected from the group consisting of ethylene glycol, propylene glycol, glycerol, and mixtures thereof, and a stabilizer comprising a basic nitrogen compound selected from the group consisting of N,N-bis-(3-aminopropyl)-dodecyl amine, a salt of N,N-bis-(3-aminopropyl)-dodecyl amine, and mixtures thereof. Also, a method of cleaning an article by diluting the stabilized liquid enzyme preparation with water in a weight ratio of enzyme preparation to water of 1:500 to 1:5000 to form a cleaning solution, adding to the cleaning solution 0.01% to 0.2% by weight, based on the weight of cleaning solution, of a buffer concentrate to adjust the pH of the cleaning solution to 7 to 10; and contacting the article with a portion of the cleaning solution to effect cleaning thereof.

Liquid enzyme preparation and the use thereof

Process for the production of detergent tablets by microwave and hot air

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Dusseldorf, Germany

Andreas Potthoff