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    11.
    发明专利
    未知

    公开(公告)号：DE2849442A1

    公开(公告)日：1980-05-29

    申请号：DE2849442

    申请日：1978-11-15

    Applicant: BASF AG

    Inventor： LINHART FRIEDRICH DIPL CHEM DR ,  EICKEN KARL DIPL CHEM DR ,  GIRGENSOHN BJOERN DIPL CHEM DR ,  RICHARZ WINFRIED DIPL CHEM DR

    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.

    15.
    发明专利
    未知

    公开(公告)号：DE3135830A1

    公开(公告)日：1983-03-24

    申请号：DE3135830

    申请日：1981-09-10

    Applicant: BASF AG

    Inventor： HERTEL OTTO DIPL CHEM DR ,  LINHART FRIEDRICH DIPL CHEM DR ,  SCHARF EMIL DIPL CHEM DR

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

    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.

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