99.
    发明专利
    未知

    公开(公告)号:DE10208361A1

    公开(公告)日:2003-09-04

    申请号:DE10208361

    申请日:2002-02-27

    Applicant: BASF AG

    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).

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