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    31.
    发明专利
    未知

    公开(公告)号：DK0486608T3

    公开(公告)日：1994-03-28

    申请号：DK90913137

    申请日：1990-08-06

    Applicant: BASF AG

    Inventor： HARTMANN HEINRICH ,  DENZINGER WALTER ,  SCHAFFER ORTWIN ,  BAY HERBERT ,  STORK KARL ,  GREIF NORBERT ,  OPPENL NDER KNUT

    IPC: C08F8/32 ,  C08F8/44 ,  C08F16/16 ,  C08F216/16 ,  C08F220/04 ,  C08F222/06 ,  C14C9/00

    Abstract: PCT No. PCT/EP90/01283 Sec. 371 Date Feb. 10, 1992 Sec. 102(e) Date Feb. 10, 1992 PCT Filed Aug. 6, 1990 PCT Pub. No. WO91/02094 PCT Pub. Date Feb. 21, 1991.Copolymers which are obtainable by free radical copolymerization of (a) C8-C40-alkyl vinyl ethers, if necessary as a mixture with not more than 50 mol % of C8-C40-monoolefins, with (b) ethylenically unsaturated C4-C8-dicarboxylic anhydrides at from 80 degrees to 300 degrees C. to give copolymers having molecular weights of from 500 to 20,000 g/mol, subsequent solvolysis of the anhydride groups of the copolymers and partial or complete neutralization of the carboxyl groups formed during the solvolysis, in an aqueous medium by means of a base, and which are present in the form of aqueous dispersions or solutions, are used as agents for imparting water repellency to leathers and skins.

    35.
    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

    Inventor： HARTMANN HEINRICH ,  SCHAFFER ORTWIN ,  BAY HERBERT ,  STORK KARL ,  GREIF NORBERT ,  OPPENLAENDER KNUT ,  DENZINGER WALTER

    IPC: C08L33/04 ,  C08L33/06 ,  C09K3/18 ,  C14C9/00 ,  C14C3/22

    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. …

    36.
    发明专利
    未知

    公开(公告)号：NO904131L

    公开(公告)日：1991-03-25

    申请号：NO904131

    申请日：1990-09-21

    Applicant: BASF AG

    Inventor： GREIF NORBERT ,  OPPENLAENDER KNUT

    IPC: C07C303/32 ,  C07C309/10 ,  C09K8/584 ,  C09K23/04 ,  E21B43/22 ,  C07C309/09 ,  C09K7/02 ,  E21B43/27

    Abstract: Preparation of low-temperature-stable alkanolic-aqueous solutions of polyethersulphonates of the general formula I R-(O-A)n-SO3M I in which R represents an alkyl or alkenyl group having 8 to 25 carbon atoms or an alkylphenyl group having 8 to 18 carbon atoms in the alkyl radical, A denotes a 1,2-alkylene group having 2 to 4 carbon atoms, n has a value of between 1 and 15 and M represents an alkali metal cation or an ammonium cation which can be substituted by C1-C4-alkyl groups or C1-C4-hydroxyalkyl groups, by reacting polyether halides of the general formula II R-(O-A)n-X II in which X represents chlorine or bromine, with an aqueous solution of an alkali metal sulphite or ammonium sulphite and diluting the reaction solution with a C4-C8-alkanol, by heating the reaction mixture after the reaction to 60 to 150 DEG C at 1 to 5 bar and separating the mainly aqueous phase which is formed in this process. The low-temperature-stable solutions of the polyethersulphonates I are used as surfactant solutions in tertiary oil drilling.

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