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    5.
    发明专利
    未知

    公开(公告)号：DE19544739A1

    公开(公告)日：1997-06-05

    申请号：DE19544739

    申请日：1995-12-01

    Applicant: BASF AG

    Inventor： MOHR JUERGEN DR ,  MAHR NORBERT DR ,  FUNHOFF ANGELIKA DR ,  LEININGER HARTMUT DR ,  MALLM HEIKE ,  MEIXNER HUBERT DR ,  OPPENLAENDER KNUT DR ,  SCHERR GUENTER DR ,  WEISER JUERGEN DR

    IPC: C08G73/02 ,  C08G73/04 ,  C08G65/26

    Abstract: The invention relates to a process for the preparation of hydroxyalkylated polyethyleneimines by hydroxyalkylation of polyethyleneimines in one or two procedural stages to form reaction products which contain 1 to 200 mol alkylene oxide groups per NH group in the polyethyleneimine. In the one-stage process, there are anhydrous polyethyleneimines and 1 to 20 mol %, in relation to the polyethyleneimines, of at least one anhydrous base, or aqueous solutions of said substances are dehydrated and after removing all the water are reacted at temperatures above 135-150 DEG C with at least one alkylene oxide. Alternatively, in the two-stage process, in the first stage polyethyleneimine is reacted at temperatures of from 80 to 100 DEG C with 0.7 to 0.9 mol, in relation to a mol NH group in the polymerisate, of at least one alkylene oxide in an aqueous solution, and in the second stage the reaction product obtained in the first step is reacted in the presence of 1 to 20 mol %, in relation to polyethyleneimine, of an alkaline catalyst in the absence of water at temperatures of from 120 to 150 DEG C with at least one alkylene oxide to form hydroxyalkylated polyethyleneimines which contain 1 to 200 mol of alkylene oxide groups per NH group in the polyethyleneimine. The consequent alkoxylated products are only slightly coloured.

    6.
    发明专利
    未知

    公开(公告)号：DE4405621A1

    公开(公告)日：1995-08-24

    申请号：DE4405621

    申请日：1994-02-22

    Applicant: BASF AG

    Inventor： BOECKH DIETER DR ,  KISTENMACHER AXEL DR ,  DENZINGER WALTER ,  RAU IRIS DR ,  FUNHOFF ANGELIKA DR ,  BAUR RICHARD DR ,  SCHWENDEMANN VOLKER DR ,  KUD ALEXANDER DR

    IPC: C08F2/00 ,  C08F2/16 ,  C08F2/38 ,  C08F2/44 ,  C08F4/40 ,  C08F8/12 ,  C08F218/04 ,  C08F218/08 ,  C08F218/10 ,  C08F220/04 ,  C08F220/06 ,  C08F222/02 ,  C11D3/37

    Abstract: The invention relates to a process for preparing copolymers from vinyl esters and monoethylenically unsaturated carboxylic acids by the radical copolymerisation of: (a) 20 to 80 mol % vinyl esters of aliphatic monocarboxylic acids having at least two carbon atoms, (b) 80 to 20 mol % monoethylenically unsaturated carboxylic acids and, optionally, (c) 0 to 30 mol % of other monoethylenically unsaturated monomers which can be copolymerised, and/or (d) 0 to 10 mol % monomers containing at least two ethylenically unsaturated non-conjugated double bonds in the molecule, in the presence of at least one sulphur, phosphorus and/or nitrogen compound having a reducing effect and of 0.05 to 30 wt %, relative to the monomers, of at least one surfactant in an aqueous medium and in the presence of initiators and, optionally, regulators. The invention further relates to the use of the copolymers or the copolymers comprising vinyl alcohol units obtained therefrom by hydrolysis and/or oxidation, as additives for washing and cleaning agents.

    7.
    发明专利
    未知

    公开(公告)号：DE4307112A1

    公开(公告)日：1994-09-08

    申请号：DE4307112

    申请日：1993-03-06

    Applicant: BASF AG

    Inventor： FUNHOFF ANGELIKA DR ,  BOECKH DIETER DR ,  KRONER MATTHIAS DR ,  BAUR RICHARD DR ,  KUD ALEXANDER DR ,  SCHORNICK GUNNAR DR ,  SCHWENDEMANN VOLKER DR

    IPC: C02F5/10 ,  C08G2/14 ,  C08G2/18 ,  C08G2/30 ,  C09D17/00 ,  C09K8/528 ,  C09K23/52 ,  C11D3/00 ,  C11D3/37 ,  B01F17/52

    Abstract: The invention concerns polyacetal-block-containing polymers obtained by polymerizing, in the presence of initiators, carboxylic acid esters containing aldehyde groups and by reacting the polymers with at least bifunctional cross-linking agents, in the presence of acids or Lewis acids and optionally hydrolysing the ester groups thus incorporated in the polymer. The invention also concerns a method of producing polymers containing polyacetal blocks by polymerizing carboxylic acid esters containing aldehyde groups in the presence of initiators and reacting the polyacetals containing terminal hydroxy groups thus obtained with at least bifunctional cross-linking agents, in the presence of acids or Lewis acids, plus the use of the polymers thus obtained as additives in phosphate-free and phosphate-reduced washing and cleaning agents, as scale inhibitors and as dispersants for pigments.

    9.
    发明专利
    未知

    公开(公告)号：DE4327223A1

    公开(公告)日：1995-02-16

    申请号：DE4327223

    申请日：1993-08-13

    Applicant: BASF AG

    Inventor： KORMANN CLAUDIUS DR ,  SCHWAB EKKEHARD DR ,  FUNHOFF ANGELIKA DR ,  BOECKH DIETER DR ,  KRONER MATTHIAS DR

    IPC: A61K49/18 ,  C09D5/23 ,  C09D11/00 ,  C09D11/02 ,  C09K23/52 ,  G11B5/70 ,  H01F1/44 ,  B01F17/52 ,  H01H1/28 ,  H01F1/36

    Abstract: Magnetic ink concentrates are described which consist of a dispersion of superparamagnetic or magnetically hard solid particles which are present in water or in alcohol having a dielectric constant of >/= 20 in the presence of dispersing substances, the dispersing substances (dispersants) being polyelectrolytes which have a molecular weight of between 500 and 100,000 and contain at least two identical or different hetero atoms in the main chain and at least three free carboxyl groups or three free amino groups in the side chain. Such polyelectrolytes are readily biodegradable. These ink concentrates have advantageous properties, especially with regard to stability to sedimentation.

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