Oct. 6, 2011  7  US 2011/0245219 Al  tures of fibers or threads or cotton wool can be impregnated or  soaked with the virucidal disinfectants and for example used  as medicinal swabs. Also possible is the use of impregnated  and/or soaked papers. Solid carriers which are soaked or  impregnated with disinfectants can also be in special, in par› ticular automatic controlled dispensing devices.  [0096]  The disinfectants according to the invention overall  exhibit a very broad use spectrum and can be used for the  disinfection of a large number of different inanimate surfaces  and also of a great variety of animate surfaces. The inanimate  surfaces can for example be in the form of medical instru› ments. The animate surfaces are in particular human and/or  animal skin areas, the skin of the hands in particular being  among the human skin areas.  [0097]  For the production of the virucidal disinfectants  according to the invention, the following procedure can for  example be used: in a first process step, all components except  for the alcoholic main component are completely dissolved in  a suitable quantity of water.  [0098]  For this, solubilizers as described above can if nec› essary be used. Then in a second process step, an alcoholic  main component is added to the aqueous solution.  [0099]  In principle, however, other production processes  are also possible. Thus for example components of the disin› fectant sufficiently soluble in alcohol can be dissolved before› hand in the alcoholic main component and only mixed with  the aqueous solution in the second step. In principle, it is also  possible to mix all components together in one process step.  [0100]  Further advantageous embodiments and combina› tions of characteristics of the invention follow from the fol› lowing detailed description and the totality of the patent  claims.  [0101]  In order to demonstrate the essence of the invention  various formulae of disinfectants with different compositions  were made up and their virucidal efficacy tested. For the  production of the disinfectants, in a first process step, all  components apart from the alcoholic main component were  completely dissolved in a specified quantity of water, and in a  second step the appropriate quantity of alcoholic main com› ponent was added.  [0102]  The virucidal efficacy of the disinfectants thus pro› duced was performed with polio viruses type 1, LSc-2ab as  test virus in accordance with the test conditions "Sanitary  hand wash disinfection and hand washing" of the standard EN  14476 (2005). In particular, the test virus i.e. polio viruses  type 1, LSc-2ab was first made up in a viral suspension  according to the standard at 20–1 °  C. Also, PBS or buffered  common salt solution at 20–1  °  C. was used as the loading  substance as specified. Further, 1 ml (milliliter) of the virus  suspension and 1 ml of the buffered common salt solution  were mixed with 8 ml of the virucidal disinfectant prewarmed  to 20–1  °  C. and maintained at a test temperature of 20–1  °  C.  After an exposure time of 60 seconds, 90 seconds and 120  seconds small volumes were withdrawn and immediately  transferred into a cell maintenance medium to suppress the  virucidal action. The viral titer was then determined in accor› dance with the standard EN 14476 (2005). The reduction of  the infectivity of the viruses is calculated according to the  standard from the differences in the decimal logarithmic viral  titer before and after the treatment with the virucidal disin› fectant.  [0103]  The virucidal disinfectants according to examples A  and B listed in table 1 have an alcoholic main component  consisting of ethanol and 2-propanol, with a content by  weight of 73.07 wt. % overall. As the acidic compound or  acid, in the two examples A and B, L(  +  )-lactic acid is con› tained in slightly different contents of 2.50 wt. % (Example  A) and 2.00 wt.% (Example B) respectively. Furthermore, in  both examples urea is contained, also in slightly different  contents of2.50wt. % (ExampleA) and3.00wt. % (Example  B) respectively. In addition, the formulae of examples A and  B have PEG 4000 as an additive for regulating the material  consistency, glycerin as skin care component, sodium pyr› rolidonecarboxylate (Na PCA) and water.  [0104]  As can be seen from table 1, with formulae accord› ing to examples A and Ba viral titer reduction by 3.88 log  stages (Example A) and 3.50 log stages (Example B) respec› tively is already achieved after 60 seconds. After 90 seconds  both formulae already exhibit a viral titer reduction of more  than 4 log stages and after 120 seconds with the formula  according to example A, a viral titer reduction by more than 5  log stages is already achieved. Hence there is clearly a viru› cidal action.  [0105]  In addition, the virucidal disinfectants according to  examples A and B have been found to be storage-stable for at  least two weeks and to have good skin tolerance. No itching,  reddening or burning of the skin could be observed even after  intensive use.  [0106]  The virucidal disinfectants according to examples A  and B can therefore be designated as suitable for use.  TABLE 1  MODES OF IMPLEMENTATION OF THE  INVENTION  Examples A and B  Virucidal Disinfectants Containing an Acidic Com- pound and Urea (with No Zinc Salt)  Example  Component  A  B  Alcohol [wt.%]  Ethanol  69.39  69.39  2-propanol  3.68  3.68  Acid [wt.%]  L(  +  )-lactic acid  2.50  2.00  Glycolic acid  Urea [wt.%]  2.50  3.00  Salts [wt.%]  ZincPCA  Sodium PCA  0.25  0.25  Skin protection [ wt. % ]  Glycerin  1.00  1.00  Additives [wt.%]  PEG4000  1.00  1.00  Rest [wt.%]  Water  19.68  19.68  Viral titer reduction  [Log stages]  60 seconds  3.88  3.50  90 seconds  "’:4.38  4.38  120 seconds  "’:5.13  "’:4.75 