中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

106 records (took 0.023 seconds)

    52.
    发明专利
    未知

    公开(公告)号：BRPI0411786A

    公开(公告)日：2006-08-08

    申请号：BRPI0411786

    申请日：2004-06-11

    Applicant: BASF AG

    Inventor： STUEER WOLFRAM ,  SCHEIDEL JENS ,  VOSS HARTWIG ,  BASSLER PETER ,  PER MICHAEL R

    IPC: C07F15/00 ,  C08F4/26 ,  B01J31/40 ,  C07F17/02

    Abstract: A process for separating a mixture comprising a) a monoolefinically unsaturated compound which is obtainable by adding two terminal olefins which bear the functional groups required to prepare the monoolefinically unsaturated compound containing at least two functional groups, or a saturated compound obtained by hydrogenating such a compound, b) a compound which is obtainable by adding more than two of the terminal olefins mentioned in a) or a compound obtained by hydrogenating such a compound, and c) a compound which contains a transition metal, is homogeneous with respect to the mixture and is suitable as a catalyst for preparing a monoolefinically unsaturated compound by adding two terminal olefins which bear the functional groups required to prepare the monoolefinically unsaturated compound containing at least two functional groups, by means of a semipermeable membrane to obtain a permeate and a retentate in such a way that the weight ratio of component b) to component c) in the mixture fed to the semipermeable membrane is smaller than in the retentate.

    56.
    发明专利
    未知

    公开(公告)号：AT284890T

    公开(公告)日：2005-01-15

    申请号：AT02754734

    申请日：2002-06-21

    Applicant: BASF AG

    Inventor： VANDENMERSCH HUGUES ,  VOSS HARTWIG ,  ORSTEN STEFAN ,  WULFF CHRISTIAN

    IPC: B01D61/02 ,  C07F9/38

    Abstract: The present invention relates to a process for the recovery of N-phosphonomethylglycine from an aqueous mixture which contains N-phosphonomethylglycine, ammonium halides, and alkali metal or alkaline earth metal halides and optionally organic impurities in dissolved form, where (a) the pH of the mixture is adjusted to a value in the range from 2 to 8, (b) a separation of the mixture on a selective nanofiltration membrane is performed, a retentate which is richer in N-phosphonomethylglycine and poorer in halides and a permeate which is richer in halides and poorer in N-phosphonomethylglycine being obtained, and (c) the N-phosphonomethylglycine is recovered from the retentate. The process according to the invention makes possible the recovery of the N-phosphonomethylglycine with simultaneous separation of the halide salts.

    METHOD FOR THE CONTINUOUS PRODUCTION OF A COMPOUND THAT CARRIES AT LEAST TWO FUNCTIONAL GROUPS
    57.
    发明专利
    METHOD FOR THE CONTINUOUS PRODUCTION OF A COMPOUND THAT CARRIES AT LEAST TWO FUNCTIONAL GROUPS 未知

    公开(公告)号：CA2528894A1

    公开(公告)日：2004-12-29

    申请号：CA2528894

    申请日：2004-06-11

    Applicant: BASF AG

    Inventor： STUER WOLFRAM ,  BASSLER PETER ,  VOSS HARTWIG ,  SCHEIDEL JENS ,  ROPER MICHAEL

    IPC: C07C67/347 ,  C07C51/353 ,  C07C51/36 ,  C07C51/47 ,  C07C67/303 ,  C07C67/56 ,  C07C69/593

    Abstract: The invention relates to a method for the continuous production of a compoun d that carries at least two functional groups, independently selected from the group consisting of nitrile group, carboxylic acid group, carbonic ester group, carbonic amide group. The inventive method comprises the following steps: a) adding two terminal olefins that carry the functional groups required for the production of the compound according to a1) carrying at lea st two functional groups, in the presence of a compound according to a3) that i s suitable as a catalyst for said addition and that is homogenous with respect to the reaction mixture, thereby obtaining a mixture that contains a1) a compound obtained by simple addition of the two above-mentioned terminal olefins that carry at least two functional groups, independently selected fr om the group consisting of nitrile group, carboxylic acid group, carbonic ester group, carbonic amide group, a2) a compound obtained by multiple addition of the above-mentioned two terminal olefins, and a3) the compound that is suitable as a catalyst for said addition and that is homogenous with respect to the reaction mixture, b) distilling the mixture obtained in step a) while obtaining b1) the compound obtained by simple addition of the two above- mentioned terminal olefinsthat carry at least two functional groups, independently selected from the group consisting of nitrile group, carboxyli c acid group, carbonic ester group, carbonic amide group, as the overhead product, and b2) a mixture containing b2a) a compound obtained by simple addition of the two above-mentioned terminal olefins that carry at least two functional groups, independently selected from the group consisting of nitri le group, carboxylic acid group, carbonic ester group, carbonic amide group, b2 b) a compound obtained by multiple addition of the above-mentioned two terminal olefins, and b2c) the compound that is suitable as a catalyst for said addition and that is homogenous with respect to the reaction mixture, c) separating the entire mixture obtained in step b2) or a part thereof by mean s of a semipermeable membrane while obtaining a permeate and a retentate in su ch a manner that the weight ratio of component b2b) to component b2c) of the mixture added in step c) is smaller than in the retentate, d) returning, either partially or completely, to step a) the permeate obtained in step c), and e) returning, either partially or completely, to step a) the part of the mixture obtained in step b2) and not separated according to step c).

Patent Agency Ranking