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    PREPARATION OF WATER-SOLUBLE, NITROGEN-CONTAINING CONDENSATES AND THEIR USE IN PAPERMAKING
    22.
    发明专利
    PREPARATION OF WATER-SOLUBLE, NITROGEN-CONTAINING CONDENSATES AND THEIR USE IN PAPERMAKING 未知

    公开(公告)号：AU550211B2

    公开(公告)日：1986-03-06

    申请号：AU8815082

    申请日：1982-09-09

    Applicant: BASF AG

    Inventor： HERTEL OTTO ,  LINHART FRIEDRICH ,  SCHARF EMIL

    IPC: C08G69/00 ,  C08G69/48 ,  C08G73/02 ,  D21H17/55 ,  D21H21/10 ,  D21F1/66

    Abstract: Water-soluble, nitrogen-containing condensates are prepared by reacting a cross-linking agent, obtained by (a) condensing 1 mole of a dicarboxylic acid of 4 to 10 carbon atoms with from 1 to 2 moles of a polyalkylenepolyamine, having 3-10 basic nitrogen atoms in the molecule, to give a polyamidoamine and (b) reacting the polyamidoamine with epichlorohydrin and/or dichlorohydrin in aqueous solution at a pH of from 4.5 to 8.5 and at below 100 DEG C., from 1 to 130 parts by weight of epichlorohydrin and/or dichlorohydrin being employed per 100 parts by weight of the polyamidoamine from (a), with ammonia, a primary amine, a polyamine containing 2 to 4 N atoms, a polyether-amine or a polyamidoamine in aqueous solution at below 100 DEG C. The condensates are used as retention aids, flocculants and drainage aids in papermaking.

    PREPARATION OF WATER-SOLUBLE, NITROGEN-CONTAINING CONDENSATES AND THEIR USE IN PAPERMAKING
    24.
    发明专利
    PREPARATION OF WATER-SOLUBLE, NITROGEN-CONTAINING CONDENSATES AND THEIR USE IN PAPERMAKING 未知

    公开(公告)号：ZA826608B

    公开(公告)日：1983-10-26

    申请号：ZA826608

    申请日：1982-09-09

    Applicant: BASF AG

    Inventor： HERTEL OTTO ,  LINHART FRIEDRICH ,  SCHARF EMIL

    IPC: C08G69/00 ,  C08G69/48 ,  C08G73/02 ,  D21H17/55 ,  D21H21/10 ,  D21H ,  C07C ,  C08G

    Abstract: Water-soluble, nitrogen-containing condensates are prepared by reacting a cross-linking agent, obtained by (a) condensing 1 mole of a dicarboxylic acid of 4 to 10 carbon atoms with from 1 to 2 moles of a polyalkylenepolyamine, having 3-10 basic nitrogen atoms in the molecule, to give a polyamidoamine and (b) reacting the polyamidoamine with epichlorohydrin and/or dichlorohydrin in aqueous solution at a pH of from 4.5 to 8.5 and at below 100 DEG C., from 1 to 130 parts by weight of epichlorohydrin and/or dichlorohydrin being employed per 100 parts by weight of the polyamidoamine from (a), with ammonia, a primary amine, a polyamine containing 2 to 4 N atoms, a polyether-amine or a polyamidoamine in aqueous solution at below 100 DEG C. The condensates are used as retention aids, flocculants and drainage aids in papermaking.

    PREPARATION OF WATER-SOLUBLE, NITROGEN-CONTAINING CONDENSATES AND THEIR USE IN PAPERMAKING
    27.
    发明专利
    PREPARATION OF WATER-SOLUBLE, NITROGEN-CONTAINING CONDENSATES AND THEIR USE IN PAPERMAKING 未知

    公开(公告)号：AU8815082A

    公开(公告)日：1983-03-17

    申请号：AU8815082

    申请日：1982-09-09

    Applicant: BASF AG

    Inventor： HERTEL OTTO ,  LINHART FRIEDRICH ,  SCHARF EMIL

    IPC: C08G69/00 ,  C08G69/48 ,  C08G73/02 ,  D21H17/55 ,  D21H21/10 ,  D21F1/66

    Abstract: Water-soluble, nitrogen-containing condensates are prepared by reacting a cross-linking agent, obtained by (a) condensing 1 mole of a dicarboxylic acid of 4 to 10 carbon atoms with from 1 to 2 moles of a polyalkylenepolyamine, having 3-10 basic nitrogen atoms in the molecule, to give a polyamidoamine and (b) reacting the polyamidoamine with epichlorohydrin and/or dichlorohydrin in aqueous solution at a pH of from 4.5 to 8.5 and at below 100 DEG C., from 1 to 130 parts by weight of epichlorohydrin and/or dichlorohydrin being employed per 100 parts by weight of the polyamidoamine from (a), with ammonia, a primary amine, a polyamine containing 2 to 4 N atoms, a polyether-amine or a polyamidoamine in aqueous solution at below 100 DEG C. The condensates are used as retention aids, flocculants and drainage aids in papermaking.

    PROCESS FOR PRODUCING PIRASOLE DERIVATIVES OF HIGH PURITY FROM ROW PRODUCT
    30.
    发明专利
    PROCESS FOR PRODUCING PIRASOLE DERIVATIVES OF HIGH PURITY FROM ROW PRODUCT 未知

    公开(公告)号：HU178450B

    公开(公告)日：1982-05-28

    申请号：HUBA003885

    申请日：1979-11-14

    Applicant: BASF AG

    Inventor： LINHART FRIEDRICH ,  EICKEN KARL ,  GIGENSOHN BJOERN ,  RICHARZ WINFRIED

    IPC: C07D231/12 ,  C07D231/14 ,  C07D231/18 ,  C07D231/20 ,  C07D521/00

    Abstract: 1. A process for the preparation of substantially pure pyrazole compounds of the general formula see diagramm : EP0012216,P9,F1 where R is hydrogen, halogen, alkyl of up to 5 carbon atoms, alkoxy of up to 3 carbon atoms, perhaloalkyl of up to 3 carbon atoms or alkoxyalkyl of up to 5 carbon atoms, R**1 is hydrogen, halogen, alkyl of up to 5 carbon atoms, alkoxy of up to 3 carbon atoms, perhaloalkyl of up to 3 carbon atoms or alkoxyalkyl of up to 5 carbon atoms, R**2 is hydrogen, halogen, alkyl of up to 5 carbon atoms, alkoxy of up to 3 carbon atoms, perhaloalkyl of up to 3 carbon atoms or alkoxyalkyl of up to 5 carbon atoms, or R**2 together with R is an ortholinked alkylene chain of up to 6 carbon atoms which is unsubstituted or substituted by alkyl of up to 4 carbon atoms, X is chlorine or bromine, and R**3 and R**4 are identical or different and each is hydrogen, alkyl, alkoxy, alkylthio, carbalkoxy or perfluoroalkyl, in each case of up to 4 carbon atoms, or halogen, phenyl, cyano or carboxyl, from the corresponding crude products, characterized in that the crude products are treated with 30 to 90% by weight aqueous solutions of strong acids, thereafter the aqueous solution is separated off and diluted with water, and the pure product which hereupon precipitates is separated from the aqueous fluid.

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