C - Chemistry – Metallurgy – 11 – D
Patent
C - Chemistry, Metallurgy
11
D
C11D 7/42 (2006.01) A61L 2/18 (2006.01)
Patent
CA 2657820
Liquid compositions for cleaning, in particular medical instruments and air conditioning surfaces, said composition excluding surfactants and comprising one or more enzymes including a protease and optionally a hydrolase, a solvent system including a water soluble glycol ether solvent, at least one anionic hydrotrope, and wherein the molar ratio of said at least one hydrotrope to said glycol ether in the composition is selected to preserve the activity of said one or more enzymes. The hydrotrope is advantageously an anionic hydrotrope selected from the group consisting of water soluble anionic hydrotropes of the formula (I) and having no alkyl side chain greater than six carbons in length, for example a xylene sulfonate or cumene sulfonate salt.
L'invention concerne des compositions liquides pour le nettoyage, en particulier d'instruments médicaux et de surfaces de conditionnement d'air, ladite composition étant exempte d'agents tensioactifs et contenant une ou plusieurs enzymes comprenant une protéase et facultativement une hydrolase, un système solvant comprenant un solvant éther de glycol soluble dans l'eau, au moins un hydrotrope anionique, le rapport molaire dudit hydrotrope audit éther de glycol dans la composition étant choisi pour conserver l'activité de ladite ou desdites enzymes. L'hydrotrope est avantageusement un hydrotrope anionique choisi dans le groupe constitué par les hydrotropes anioniques solubles dans l'eau de la formule (I) et n'ayant pas de chaîne latérale alkyle de plus de 6 atomes de carbone de longueur, par exemple un sel sulfonate de xylène ou sulfonate de cumène.
Kritzler Steven
Sava Alex
Kirby Eades Gale Baker
Novapharm Research (australia) Pty Ltd
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