Cleaning and disinfecting agent containing an N-substituted prop

Details Cleaning and disinfecting agent containing an N-substituted prop Cleaning and disinfecting agent containing an N-substituted prop

1992-11-12

1995-04-04

Lieberman, Paul

Compositions

Compositions containing a single chemical reactant or plural...

Organic reactant

252134, 422 16, 514563, C11D 348

Patent

active

054035058

DESCRIPTION:

BRIEF SUMMARY
This invention relates to a preparation for cleaning and disinfecting items of medical equipment and to a process using this preparation in an automatic machine for the spray cleaning and spray disinfection of items of medical equipment.
Automatic program-controlled washing machines are normally used in hospitals for cleaning and disinfecting items of equipment, for example bedsteads. These machines consist essentially of a closed chamber in which the articles to be cleaned are sprayed with one or more cleaning and/or disinfecting solutions which generally have elevated temperatures of normally above 50.degree. C. In machines of the type in question, the cleaning and disinfecting solutions, which are normally prepared by dissolving solid or liquid concentrates in water and diluting the solution to the required in-use concentration, are normally accommodated in heated storage tanks and are automatically pumped through nozzles into the cleaning chamber. The contact time of the individual solutions on the articles to be cleaned and disinfected is relatively short and is generally of the order of 30 seconds to three minutes. A distinction is drawn between washing machines in which the washing solutions are repeatedly used on the circulation principle and so-called freshwater machines which use freshly prepared washing solutions for each article to be cleaned, i.e. the washing solutions are discarded after being used only once and have to be disposed of.
In freshwater systems, the articles to be disinfected are cleaned by spraying with a normally heated cleaning solution, are then optionally rinsed by spraying with water to which a rinse aid may have been added, are subsequently disinfected by spraying with a disinfectant and, in a final step, are dried. In systems of this type, the cleaning and disinfecting steps are separated from one another in time and follow one another immediately through the use of spray solutions containing different ingredients or are separated from one another by an intermediate clear rinse step.
By contrast, circulation systems use the washing solution repeatedly over a prolonged period, generally one day, so that several units to be cleaned, normally more than 100, can be cleaned with the same solution. Since only one solution is generally used in circulation systems, it must have both a cleaning and a disinfecting effect. If the machines operating on the circulation principle incorporate a clear rinse step, the clear rinse solution used in this step is either discarded after use or enters the circulating cleaning solution which is thus increasingly diluted, so that particularly stringent demands are imposed on the cleaning and disinfecting effect of the preparation used in the wash liquor. In cases where used cleaning solution and clear rinse solution are combined with one another, part of the dilute cleaning solution normally flows off automatically according to the filling level of the storage tank and may then be replaced by optionally automatic introduction of fresh water and/or concentrated cleaning preparation.
To be able to be used in the automatic machines described above, more particularly those operating on the circulation principle, a cleaning and disinfecting preparation has to meet a number of requirements. Thus, it has to combine a good cleaning effect with a good disinfecting effect and, in addition, must be able to develop both effects in a short time. Since the liquor is sprayed under high pressure at elevated temperature in automatic machines, it must be substantially foam-free and must not be corrosive towards any of the materials processed in the articles to be cleaned. In addition, it must be compatible with the constituents of any rinse aid used which, particularly in circulation systems, can continuously enter the cleaning liquor. The in-use solution of the preparation must be stable over prolonged periods of at least one day at relatively high temperatures of at least 50.degree. C., in addition to which the preparation should be ecologically safe both in use

REFERENCES:
patent: 4336270 (1982-06-01), Montwyler
patent: 4584121 (1986-04-01), Blaschke et al.
patent: 4652585 (1987-03-01), Gerhardt et al.
patent: 5000867 (1991-03-01), Heinhus-Walther et al.

Affiliated with

Also associated with

Rating

Cleaning and disinfecting agent containing an N-substituted prop does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Cleaning and disinfecting agent containing an N-substituted prop, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Cleaning and disinfecting agent containing an N-substituted prop will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2379021