METHOD FOR PRODUCING ZWITTERIONIC MONOMERS AND USE OF SAID MONOMERS
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United States of America Patent
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Sep 3, 2015
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Oct 23, 2013
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Oct 24, 2012
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Abstract
The present invention relates to a method for producing zwitterionic monomers having variable charge distances m between an anionic group and a cationic group, wherein the dihalogen compounds are reacted with N,N-alkylated amino alcohols to form zwitterionic, monohalogenated monoalcohols, which are then sulfonated by adding metal sulfite salts. The final step of the synthesis is an acid-catalyzed esterification of said zwitterionic monoalcohols with methacrylic acid or acrylic acid to form the zwitterionic monomer.
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