公开(公告)号：DE50301117D1

公开(公告)日：2005-10-13

申请号：DE50301117

申请日：2003-01-30

Applicant: BASF AG

Inventor： LAUBENDER DR ,  GERST DR ,  RECK DR

IPC: C08F265/02 ,  C08F267/02 ,  D04H1/587 ,  C08L51/00 ,  D04H1/64

Abstract: Preparing an aqueous polymer dispersion comprises supplying at least one portion of ethylenically unsaturated monomers, a portion of water, at least one portion of polymer synthesized from ethylenically unsaturated monocarboxylic and/or dicarboxylic acid, ethylenically unsaturated compound(s) and further monomers, and at least portions of auxiliaries to a polymerization vessel together, without an emulsion being formed through a feed line. Preparing an aqueous polymer dispersion including dispersed polymer particles of addition polymer A1 obtainable by semi-continuous free-radical emulsion polymerization of ethylenically unsaturated monomers in the presence of an addition polymer A2 comprises supplying portion(s) of the ethylenically unsaturated monomers, a portion of water, portion(s) of the polymer A2 and, if desired, at least portions of further auxiliaries to the polymerization vessel together, without an emulsion being formed through a feed line. The addition polymer A2 is synthesized from 50-99.5 wt.% ethylenically unsaturated monocarboxylic and/or dicarboxylic acid, 0.5-50 wt.% ethylenically unsaturated compound(s) and up to 20 wt.% further monomer(s). The ethylenically unsaturated compound is ester of ethylenically unsaturated monocarboxylic acid or monoester and diester of ethylenically unsaturated dicarboxylic acid with an amine containing hydroxyl group(s).