中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

49 records (took 0.022 seconds)

    23.
    发明专利
    未知

    公开(公告)号：DE59804931D1

    公开(公告)日：2002-08-29

    申请号：DE59804931

    申请日：1998-11-30

    Applicant: BASF AG

    Inventor： LEUBE F ,  SCHMIDT-THUEMMES JUERGEN ,  ZELLER EDGAR ,  MAAS HEIKO

    IPC: C08C19/02 ,  C08F8/04

    Abstract: A process for selectively hydrogenating ethylenically unsaturated double bonds in polymers P involves reacting the polymers P with hydrogen in the presence of at least one hydrogenation catalyst selected from the salts and complex compounds of rhodium and/or of ruthenium in an aqueous dispersion of the polymers P that comprises not more than 20% by volume of an organic solvent. This process can be used to give hydrogenated polymer dispersions and, from these dispersions, polymers. Also claimed are aqueous polymer dispersions comprising polymers P', which include structural units I, II and III as in claim 10, with or without structural units IV and/or V as in claim 11.

    24.
    发明专利
    未知

    公开(公告)号：DE59802764D1

    公开(公告)日：2002-02-21

    申请号：DE59802764

    申请日：1998-09-30

    Applicant: BASF AG

    Inventor： PACIELLO ROCCO ,  ZELLER EDGAR ,  BREIT BERNHARD ,  ROEPER MICHAEL

    IPC: C07C45/50 ,  C07B61/00 ,  C07F9/6568 ,  C07F15/00

    Abstract: A process for the preparation of phosphabenzene compounds of the formulae I and IIwhere R1 to R6, independently of one another, are hydrogen, COOM SO3M, NR3X, NR2, OR, COOR or SR, where M is hydrogen, NH4 or an alkali metal, X is an anion, R is hydrogen, C1-6-alkyl, or C1-12-alkyl, C6-12-aryl, C7-12-aralkyl or C3-6-heterocycloalkyl having 1 to 3 heteroatoms which may be substituted by the above radicals or linked to form fused rings, and-W- is a bridge comprising a covalent bond, an oxo group, a sulfur group, an amino group, a di-C1-6-alkylsilicon group or a C1-16-radial, which may be part of one or more linked cyclic or aromatic rings and may be interrupted by 1 to 3 heteroatoms, where the phosphabenzene ring o- or m-position not bonded to the bridge may carry one of the radicals R1 to R6,with the exception of bis-3,3'-(2,4,6-triphenyl-3-phosphabenzene)-1,1-biphenyl, by reacting corresponding pyrilium salts with PH3 in the presence of a catalytic amount of acid and in the presence or absence of a solvent or diluent, where the pyrilium salts are mixed with PH3 at above 0° C. and reacted at from 0° C. to 200° C. and at a pressure greater than 1 bar.

    Hydroformylation of lower olefins by reaction with carbon monoxide and hydrogen comprises two reaction steps in which fresh reactants are fed to the second reactor and partially reacted
    26.
    发明专利
    Hydroformylation of lower olefins by reaction with carbon monoxide and hydrogen comprises two reaction steps in which fresh reactants are fed to the second reactor and partially reacted 未知

    公开(公告)号：DE10035370A1

    公开(公告)日：2001-03-22

    申请号：DE10035370

    申请日：2000-07-20

    Applicant: BASF AG

    Inventor： AHLERS WOLFGANG ,  ZELLER EDGAR ,  WALCZUCH KARL-HEINZ ,  ROEPER MICHAEL

    IPC: C07C45/50

    Abstract: Hydroformylation of 2-4C olefins by reaction with carbon monoxide and hydrogen in the presence of a catalyst (I) comprises two reaction steps (R1) and (R2) whereby an olefin containing feed, carbon monoxide, hydrogen and a liquid stream from (R1) is fed into (R2) and partially reacted. Hydroformylation of 2-4C olefins by reaction with carbon monoxide and hydrogen in the presence of a hydroformylation catalyst (I) comprises two reaction steps (R1) and (R2) whereby an olefin containing feed, carbon monoxide, hydrogen and a liquid stream from (R1) is fed into (R2) and partially reacted. A liquid feed is removed from (R2) and is separated into a catalyst containing fraction (F1), a product containing fraction (F2) and a non-reacted olefin fraction (F3); at least a portion of (F3) and optionally at least a fraction of (F1) as well as carbon monoxide and/or hydrogen are fed into R1 and reacted in the presence of a catalyst; and a liquid stream is removed from (R1) and fed to (R2).

    28.
    发明专利
    未知

    公开(公告)号：DE19908462A1

    公开(公告)日：2000-08-31

    申请号：DE19908462

    申请日：1999-02-26

    Applicant: BASF AG

    Inventor： ZELLER EDGAR ,  ROEPER MICHAEL ,  DECKER JUERGEN

    IPC: B01J31/16 ,  B01J31/18 ,  C07C45/50 ,  C07C47/02 ,  B01J31/06 ,  B01J31/12

    Abstract: The invention relates to a method for the hydroformylation of olefins with at least 7 carbon atoms. According to said method a) the olefin is subjected to a hydroformylation reaction together with carbon monoxide and hydrogen in the presence of a complex consisting of rhodium and a polymeric complex ligand with more than 10 nitrogen atoms and having a molar mass greater than 1000 g/ mol, as well as a solubilizing agent, at a temperature of between 40 and 200 DEG C and a pressure of between 1 and 600 bar in a reaction zone, such that in these reaction conditions the solubilizing agent together with the olefin and the resulting hydroformylation product forms a largely uniform phase in which the complex is solubilized; b) in said reaction mixture a phase separation into a phase rich in solubilizing agent and a phase poor in solubilizing agent is induced, the complex preferably being present in the phase rich in solubilizing agent and the hydroformylation product preferably present in the phase poor in solubilizing agent; and c) the above phases are separated. Phase separation is preferably induced by cooling or by addition of a phase-separating agent such as water.

Patent Agency Ranking