Process for the preparation of aqueous polymer dispersions free of poly (vinyl alcohol).

摘要

Process for the preparation of aqueous polymer dispersions free of poly (vinyl alcohols al), by radical polymerization of one or more ethylenically unsaturated monomers in an aqueous medium, wherein the polymerization is carried out in the presence of a stabilized system - res, containing a) one or more poly (alkylene oxides) with identical or different structural units taken from the group comprising - (CH2) nO- with n = 2 to 4, -CH2-CHR- with O- R = C1 to C15, -CH2-CHOR '' - O- with R '= H, C1 to C15, in the case of copolymers containing alkylene oxide units of alkylene oxides in a distribution statistical, and R '' equal or different end groups, taken from the group comprising a group H, OH, an alkyl group and a group O-alkyl, whereby the alkyl radical to be unbranched or branched and being a radical C1 to C20, and b) one or more compu these taken develop between group comprising condensation products of alkylene oxides having 2 to 4 carbon atoms with linear and branched alkanols or having 6 to 24 C atoms, alkyl phenols, or alkyl monocarboxylic linear acids and branched They are having 6 to 24 carbon atoms and block copolymers based on at least two different alkylene oxides having 2 to 4 carbon atoms