143.
    发明专利
    未知

    公开(公告)号:FI923754A

    公开(公告)日:1993-02-23

    申请号:FI923754

    申请日:1992-08-20

    Applicant: BASF AG

    Abstract: In anti-foams for the paper industry, based on oil-in-water emulsions, the oil phase makes up 5 to 50 % by weight of the bulk of the emulsion and contains (a) an alcohol having at least 12 carbon atoms, fatty acid esters of alcohols having at least 22 carbon atoms and C1- to C36-carboxylic acids, distillation residues which are obtainable in the production of alcohols having a higher carbon number by oxo synthesis or by the Ziegler process and which may be alkoxylated, mixtures of the said compounds and/or (b) a fatty acid ester of C12- to C22-carboxylic acids with monohydric to trihydric C1- to C18-alcohols and, if appropriate, (c) a hydrocarbon having a boiling point above 200 DEG C or fatty acids having 12 to 22 carbon atoms in combination with (d) 1 to 80 % by weight of polyglycerol esters which can be prepared by an at least 20% esterification of polyglycerol mixtures which contain, as essential constituents, diglycerol, triglycerol, tetraglycerol and, if appropriate, more highly condensed polyglycerols, with saturated or unsaturated C12- to C36-fatty acids. i

    149.
    发明专利
    未知

    公开(公告)号:NO910795L

    公开(公告)日:1991-08-29

    申请号:NO910795

    申请日:1991-02-27

    Applicant: BASF AG

    Abstract: The present invention relates to methods of demulsifying employing condensates as demulsifiers for oil-in-water emulsions and prepared from A) a precondensate from one or more trialkanolamines of the general formula I (I) in which R1 to R3 denote the same or different 1,2-alkylene groups of from 2 to 4 carbon atoms, and B) from 0.1 to 30% w/w, based on said precondensate, of one or more of the following compounds II: a) urea or a urea derivative of the general formula IIa (IIa) b) a urea derivative of the general formula IIb (IIb) c) a urethane of the general formula IIc (IIc) and/or d) a urethane of the general formula IId (IId) in which R1 is hydrogen, C1-C20-alkyl or C2-C20-alkenyl, R2 and R3 are the same or different and denote hydrogen or C1-C4-alkyl, R4 is C1-C4-alkyl and R5 is C1-C12-alkylene.

    150.
    发明专利
    未知

    公开(公告)号:PT95319A

    公开(公告)日:1991-05-22

    申请号:PT9531990

    申请日:1990-09-14

    Applicant: BASF AG

    Abstract: Use of copolymers that contain as copolymerised units …… a) from 50 to 90 % by weight of C8-C40-alkyl (meth)acrylates, vinyl esters of C8-C40-carboxylic acids or mixtures thereof and … b) from 10 to 50 % by weight of monoethylenically unsaturated C3-C12-carboxylic acids, monoethylenically unsaturated dicarboxylic anhydrides, monoesters or monoamides of monoethylenically unsaturated C4-C12-dicarboxylic acids, amides of C3-C12-monocarboxylic acids or mixtures thereof and have molecular weights of from 500 to 30,000 g per mole, in at least partially neutralised form in aqueous solution or in aqueous dispersion for waterproofing leathers and fur pelts. …

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