1194-36-1Relevant articles and documents
Polymeric quaternary ammonium salts possessing antimicrobial activity and methods for preparation and use thereof
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, (2008/06/13)
Quaternary ammonium salts exhibiting strong antimicrobial activity are disclosed along with the method of using them as antimicrobial agents. The salts having the formulas I or II: STR1 wherein R is C1-20 alkyl, C5-7 cycloalkyl or an aralkyl group, R1 is methyl or ethyl, and X is a halogen, are prepared by the method comprising the steps of: (a) initially reacting 2-nitro-2-methyl-1,3-propanediol or 2-nitro-2-ethyl-1,3-propanediol or a mixture thereof and trioxane in a solvent containing an acid to obtain a first product; (b) reducing said first product by dissolving said first product in a solvent and maintaining the resulting solution under a hydrogen atmosphere in the presence of a reduction catalyst to obtain a second product; (c) alkylating said second product by maintaining said second product under a hydrogen atmosphere in the presence of a formaldehyde solution, a solvent and an alkylation catalyst to obtain a third product; and (d) quaternizing said third product by reacting said third product with a halogenated hydrocarbon in the presence of a solvent to obtain quaternary ammonium salts.