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    Method of separating acids from chemical reaction mixtures by means of apolar amines
    22.
    发明专利
    Method of separating acids from chemical reaction mixtures by means of apolar amines 未知

    公开(公告)号：AU2006311130B2

    公开(公告)日：2012-04-05

    申请号：AU2006311130

    申请日：2006-09-15

    Applicant: BASF SE

    Inventor： DECK PATRICK ,  BOCK MICHAEL ,  GANZ HOLGER ,  KORNIG WOLFGANG ,  HUTTENLOCH OLIVER ,  MAUSS MICHAEL

    IPC: C07F9/22 ,  C05G3/90 ,  C07B63/00

    Abstract: The invention relates to a method of separating acids from reaction mixtures comprising at least one product of value which is of low water solubility, by means of at least one apolar amine as auxiliary base, said method comprising the following steps: a) reacting the auxiliary base with the acid to form a salt; b) reacting the salt formed in step a) with a further base which takes over the acid while releasing the auxiliary base; c) extracting the mixture obtained in step b) with water or an aqueous medium, the salt of the further base dissolving in the aqueous phase, and the product of value, or the solution of the product of value in a suitable solvent, and the auxiliary base forming at least one separate, non-aqueous phase; and d) removing, by distillation, the auxiliary base and/or at least part of any solvent present from the at least one non-aqueous phase obtained in step c), in the course of which two immiscible liquid phases may be formed. The invention further relates to a process for preparing thiophosphoramides, to the thiophosphoramides obtainable by this process, and to the use of these thiophosphoramides as an addition to urea-containing mineral and/or organic-mineral fertilizers.

    24.
    发明专利
    未知

    公开(公告)号：BRPI0707139A2

    公开(公告)日：2011-04-19

    申请号：BRPI0707139

    申请日：2007-01-12

    Applicant: BASF SE

    Inventor： BOCK MICHAEL ,  PALLASCH HANS-JUERGEN ,  DEBERDT FILIP ,  MOORS JOHNNY

    IPC: C07C209/78 ,  C07C209/84 ,  C07C211/50 ,  C07C263/10 ,  C07C265/12

    Abstract: The invention provides a process for the simultaneous preparation of 4,4′-diphenylmethanediamine and also diphenylmethane diisocyanate and polyphenylenepolymethylene polyisocyanates, which comprises the steps a) preparation of a mixture of diphenylmethanediamine and polyphenylenepolymethylenepolyamines by acid condensation of aniline and formaldehyde and subsequent work-up of the mixture, b) splitting-off of part of the mixture prepared in step a), c) distillation of the mixture separated off in step b) in a column, d) recirculation of the bottom product from step c) to the end product from step a) and condensation of the overhead product from step c), e) distillation of the overhead product from step c) in a column, f) recirculation of the overhead product from step e) to the end product from step a), g) isolation of the 4,4′-diphenylmethanediamine obtained as bottom product in step e), h) reaction of the mixture from step a) with phosgene and subsequent work-up of the reaction product.

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