Means for the disinfection of surfaces.

Technical area the invention concerns means for the disinfection of Oberflächen.

which can be cleaned with difficulty State of the art in hospitals are also in the today's time bacterial infections a large problem and lead to many complications. Already longer antibiotics stand for the treatment of bacterial infections for order, however particularly in the surrounding field of hospitals disease germs developed, which are resistant to different antibiotics. Such multi-resistant bacteria represent a ever larger problem in particular in the intensive medicine, since particularly the patients in hospitals often exhibit a weakened immune system, and therefore to infections are particularly susceptible. Much antibiotic-resistant St&amp spread; mme are aureus (MRSA) - trunks, with those on intensive care units in the USA already an illness frequency of more than 50% counted Methicillin resistant Staphylococcus on one year auftritt.

Similar problems exist also in veterinary practices, there also cats and dogs frequently carriers of MRSA sind.

Studies showed that also in this case inappropriate handling antibiotics leads to multi-resistant germs with domestic animals (“Occurrence OF highly fluoroquinolone resistant and methicillin resistant Staphylococcus aureus in cathedral TIC animais”, A.E. Lin, J.E. Davies, CAN. J. Microbiol. 53, 925, (20 07)). These will then transfer to the owners and the personnel from veterinary practices, from where out they will continue to transfer then animal or humans can (“High risk for nasal carriage OF methicillin resistant Staphylococcus aureus among Danish veterinary practitioners”, A. Moodley et al., Scand. J. Work, Envir. & Health 34, 151 (2008)).

The most efficient means for the avoidance of complications by I nfekte is well-known masses the avoidance of the infection by suitable hygiene measures, in particular by a regular and sufficient disinfection of articles and surfaces with those a patient indirectly into contact to directly or come can. Flat one, smooth surfaces can with conventional liquid disinfectants relatively problem-free disinfected werden.

Verbrauchsgegenstände within the hospital range usually already sterilized packaged for the order gestellt.

Several times usable devices and articles again, as for example operation cutlery or medical instruments can in autoclaves sterilized werden.

Problematic however AIItagsgegenstände, as for example ball-point pen, are mobile phones, Pager, eyeglasses, computer keyboards, etc. their use also in hospitals are unavoidable. Such articles come frequently into contact with the hands, which are naturally particularly germ-burdening. In this way germs can be spaciously kidnapped by visitors and patients, but in particular by the maintenance personnel. Another problem are electronic Ger& Te, which can exhibit to heavyaccessible cracks for example with control buttons, those by a conventional surface disinfection not accessible are and like that as a herd of germ dienen.

The articles mentioned are not auto+pianoable in all rule, and liquid disinfectants are not practicable, since they do not penetrate with superficial application into all cracks. Liquid disinfectants can besides electronic construction units damage. It would be therefore desirable to have a possibility also such problematic articles and surfaces simply and effectively disinfects too können.

WHERE 02/0 reveal 557,642 a cleaning agent for removing from solid particles from surfaces, with which a pseudoplastic Polygalactomannan Gelmasse penetrates into close gaps and takes up existing solid particles. The taken up particles are merged into the mass, so that constantly an unspent surface is available for the cleaning. The cleaning mass mentioned is aligned to the efficient admission of dust and lints. The surface wetting is for an employment as disinfectant ungenügend.

Task of the invention task of the invention is it to place a means to the disinfection from surfaces to the order which does not exhibit mentioned the above and other disadvantages. In particular such a disinfectant should be able to penetrate also into with difficulty accessible crack over germs abzutöten.

Such a disinfectant is to kill germs effectively and fast, in order to fulfill so the hygiene requirements within the hospital range and to prevent a displaced person of germs efficiently. In particular it is to fulfill the accordingly specified standards, in particular the European standards EN 1040 and EN13 697.

These and other tasks solved by a ductile mass according to invention for use than disinfectants in accordance with the independent requirement. Further favourable execution forms are in the dependent requirements gegeben.

Representation of the invention a ductile mass according to invention for use as disinfectants covers 25 to 40 weight percentage, prefers 30 to 35 weight percentage of a solvent component consisting of low-molecular alcohols mixable with water, 1 to 10 weight percentage, prefers 2 to 7 weight percentage of a bactericidal effect component, 3 to 6 weight percentage hydroxypropyliertes Polygalactomannan with a degreedegree degree between 0.3 and 1.5, and 0,1 to 0,8 weight percentage boric acid or an equivalent quantity boron lonen. The remaining parts by weight are preferably supplemental with Wasser.

A mass according to invention is suitable favourably for it, small particle, in particular biogenous impurities to take up on its surface responsible. This has the advantage that apart from the immediate local disinfection effect small particles cling to a mass according to invention like evenly for example germs on the surface bleiben.

There the germs are killed likewise, whereby the retention time is substantially higher than on the surface which can be cleaned, and thus the bactericidal effect absolutely. By kneading and forming the particles arrive to the mass, as it happens automatically with normal application of the mass according to invention, permanently in the inside to the mass, and the renewed surface knows further foreign particles of biogenous and non-biogenous kind aufnehmen.

In a favourable execution form of such a mass according to invention the solvent component is selected consisting of a group of ethanol, 2-Propanol, methanol, 1 - Propanol, and mixtures of it. In a still more favourable variant the solvent component is ethanol, 2-Propanol or a mixture davon.

As bactericidal effect component of a mass according to invention favourable-proves Benzalkoniumchlorid, Benzalkoniumsaccharinat, DidecyI DimethyI ammonium chloride, Chlorhexidin or a mixture of it becomes verwendet.

In another favourable variant of a mass according to invention the degreedegree degree of the hydroxypropylierten Polygalactomannans between 0.5 and 1.5 amounts to. A degreedegree degree between 0.6 and 1.2.

is particularly favourable The effect of a ductile disinfectant according to invention is based on the fact that this is out-arranged instead of as liquid disinfectant as gel mass with pseudoplastic flow behavior. If a disinfectant according to invention is pushed open on utensils, for example a mobile phone or a computer keyboard, then the mass creeps also in cracks and columns. In this way also otherwise accessible surfaces do not come into contact with the disinfectant, so that germs are killed. After the desired effective time, for example one minute, the gel mass becomes complete by the article abgezogen.

A favourable mass according to invention covers 25 to 40 Gew. - %, prefers 30 to 35 Gew. - % ethanol or isopropanol or a mixture of it. A high content of ethanol/isopropanol is in particular favourable apart from the disinfecting effect, in order to guarantee a sufficient surface wetting of the surfaces which can be disinfected, so that also with short effective time the desired disinfection effect will receive. Further suitable alcohol components are other low-molecular alcohols, as for example methanol mixable with water or 1-Propanol.

For the education of the gelförmigen basic dimensions of the ductile disinfectant this modified, boron-interlaced Polygalactomannane covers. Polygalactomannan, a Polysaccharid, finds as hydraulic colloid use as Verdickungsund compound, for example in the food technology. Unmodified Polygalactomannane is not in ethanol löslich.

Shown that with gelförmigen cleaning agents, like it from the conditions of the technology admits are, an increase of the content of solvents, how it is necessary for a disinfectant according to invention, has itself to a insufficient consistency of the gel leads. Depending upon borrowing stop and pH value can result a soft, sticky or a brittle, crumbling consistency. Such a gel does not have no more the necessary pseudoplastic fluidity, which is necessary, also fine cracks and columns fast to behind-seized and the there surfaces too desinfizieren.

It was now found that the use of sufficiently hydroxypropyliertem Polygalactomannan improves the tolerance of the gel for higher alcohol contents. For this purpose the degreedegree degree of the Polygalactomannans (number of Hydroxypropylgruppen per Anhydrohexoseeinheit of the Polygalactomannans) must amount to at least 0,3, prefers 0,5 to 1,5, and particularly prefers 0,6 to 1.2. Attempts showed that a too high degreedegree degree again to an unwanted reduction of the elasticity of the gel mass führt.

A ductile mass according to invention for use as disinfectants in accordance with one of the preferential execution forms covers 3-6 Gew. - % Polygalactomannan, as well as 0.1-0.8 Gew. - % boric acid, at a pH value between 6 and 10. for networking are suitable as boron component for example sodium tetraborate or boric acid. The pH value can be stopped if necessary by means of additive of phosphates, for example tri sodium phosphate, or Natriumcarbonat. The networking degree must be so highly stopped on the one hand that the evaporation rate of the alcohol is not too high, in order to ensure the shelf-life of the disinfectant, and on the other hand to be so low that a sufficient surface wetting stattfindet.

The viscosity of such a mass according to invention, measured with 25 °C, amounts to 50,000 to 250,000 m Pa.s, preferably between 100,000 and 200,000 and to particularly preferentially between 120,000 and 180,000 mPa.s.

When primary bactericidal and fungicides effect component of a ductile disinfectant according to invention are in principle substances suitably, which are soluble in water and low-molecular alcohols, over a far pH range effect show, are hydrolysis stable and favourably with Tensiden compatible are. The appropriate substance should be essentially innocuous for humans and animal. It should not attack the surfaces, in particular plastics and other polymer materials which can be cleaned. Preferably the substance is biologically degradable. Suitable disinfection effect components are for example quartäre ammonium compounds, as for example Benzalkoniumchlorid (alkyl dimethyl benzyle ammonium chloride CAS 68 391-01-5), in particular with C12 = 55%, C14 = 25%, C16 = 11%, C18 = 9%, Benzalkoniumsaccharinat, DidecyI DimethyI ammonium chloride (CAS 7173-51-5) or dergleichen.

Likewise suitably Chlorhexidin is, for example as Chlorhexidin Gluconat. Disinfecting working aldehydes such as formaldehyde and 1,5-Pentandial are likewise effective, but due to their toxicity only for special ranges of application usefully, where a sporozide effect is desired. The portion of disinfection effect component amounts to between 1 and Gew. - %, preferably between 2 to 7 Gew. - %.

Mass according to invention can contain additionally water-soluble, hydrolysis-stable Tenside, for further improvement of the surface wetting, for example nichtionische Tenside as for example Polydimethylsiloxanpolyoxyal kylen Copolym e re.

The remaining parts by weight of a disinfectant according to invention beside the descriptive ingredients preferably become with water ergänzt.

A disinfectant according to invention was tested with standardized tests on its bactericidal effect in particular on MRSA (ATTC 43300), in accordance with standard EN 1040 (“Chemical disinfectants and antiseptics - basic bactericidal activity test method and requirement (phase 1), 1997”.) and EN 13697 (” Chemical disinfectants and antiseptics quantitative ones non porous surface test for the evaluation OF bactericidal and/or fungicidal activity OF chemical disinfectants used in food, industrial, cathedral TIC and institutional AREA test method and requirement without mechanical action (phase 2/step 2)”).

The tests resulted in both for 1 minute as well as for 5 minutes effective time the demanded reduction (MRSA) - of the Keimzahl around more as 100,000, which fulfills the requirements of the standards mentioned.