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89 records (took 0.022 seconds)

    81.
    发明专利
    未知

    公开(公告)号：DE3324338A1

    公开(公告)日：1985-01-17

    申请号：DE3324338

    申请日：1983-07-06

    Applicant: BASF AG

    Inventor： BERGER ROSEMARIE DIPL ING ,  DREHER HERMANN DR ,  REFFERT RUDI WILHELM DIPL ING ,  HAMBRECHT JUERGEN DR ,  HEIL EDUARD DIPL ING ,  SWOBODA JOHANN DR ,  ECHTE ADOLF DR ,  SIEBEL HANS-PETER DR

    IPC: C08G65/46 ,  C08G65/44

    Abstract: The catalyst is removed in the preparation of high molecular weight polyphenylene ethers from monohydric phenols, which are alkyl-substituted at the two ortho-positions but not at the para-position and may or may not be alkyl-substituted at the meta-position, by an oxidative coupling reaction with oxygen at from 15 DEG to 50 DEG C. in the presence of a catalyst complex obtained from a copper salt and an organic amine, in the presence of from 1 to 20 parts by weight of a solvent per part by weight of the monomeric phenol, and in the presence or absence of an activator, and removal of the metal component of the catalyst from the polyphenylene ether solution with a complex-forming or chelate-forming compound in aqueous solution, in the presence or absence of reducing and stabilizing substances and assistants for accelerating the interphase reactions and for phase separation, by a method in which the continuous removal of the copper catalyst is carried out in one or more mixer-settler stages at a phase volume ratio of the organic phase to the aqueous phase of from 1:0.1 to 1:1.0, preferably from 1:0.4 to 1:0.6.

    Process for the removal of the catalyst from polyphenylene ethers
    84.
    发明专利
    Process for the removal of the catalyst from polyphenylene ethers 未知

    公开(公告)号：DE3222289A1

    公开(公告)日：1983-12-22

    申请号：DE3222289

    申请日：1982-06-14

    Applicant: BASF AG

    Inventor： ECKELL ALBRECHT DR ,  REFFERT RUDI WILHELM ,  HAMBRECHT JUERGEN DR ,  DREHER HERMANN DR ,  HARTMANN JUERGEN DR ,  SWOBODA JOHANN DR

    IPC: C08G65/46 ,  C08G65/44

    Abstract: The invention relates to a process for the removal of the catalyst in the preparation of high-molecular-weight polyphenylene ethers from monohydric phenols by oxidative coupling reaction with oxygen at temperatures between 15 and 50 DEG C in the presence of a catalyst complex comprising a metal salt and an organic amine in the presence of a solvent, and removal of the metal ion component of the catalyst from the polyphenylene ether solution by means of complexing or chelate complexing compounds in aqueous medium, the complexing and removal of the metal ion component of the catalyst being carried out in the presence of from 0.1 to 5000 mg/kg of high-molecular-weight, at least partially water-soluble polymers of (meth)acrylic acid and/or of (meth)acrylamide.

    Process for the preparation of catalyst-free polyphenylene ethers
    85.
    发明专利
    Process for the preparation of catalyst-free polyphenylene ethers 未知

    公开(公告)号：DE3140026A1

    公开(公告)日：1983-04-21

    申请号：DE3140026

    申请日：1981-10-08

    Applicant: BASF AG

    Inventor： HAMBRECHT JUERGEN DIPL CHEM DR ,  NAARMANN HERBERT DIPL CHEM DR ,  MUENCH VOLKER DIPL CHEM DR ,  SWOBODA JOHANN DR

    IPC: C08G65/46 ,  C08G65/40

    Abstract: The invention relates to a process for the preparation of high-molecular-weight, alkyl-substituted polyphenylene ethers from monohydric phenols by oxidative coupling reaction with oxygen in the presence of a catalyst complex comprising a metal salt and an organic amine in the presence of a solvent, where the metal-ion component of the catalyst is removed from the reaction solution by addition of a chelating agent (I) and a phosphonium salt of the formula (II): in which R , R , R and R are alkyl, alkenyl, aryl and/or aralkyl groups, and X is an inorganic anion. The chelating agent (I) is a polycarboxylic acid, aminocarboxylic acid, aminopolycarboxylic acid, polyalkylenic acid, polyaminic acid, polycarboxylic acid, a polymercaptide and/or polyamine, ethylenediaminetetraacetic acid or the mono-, di-, tri- or tetrasodium salts thereof, a trimercapto- s-triazine or the mono-, di- or trisodium salts thereof, a nitrilodi- or -triacetic acid or the mono-, di- or trisodium salts thereof, glycine or the sodium salt thereof.

    88.
    发明专利
    未知

    公开(公告)号：DE1770935A1

    公开(公告)日：1972-01-13

    申请号：DE1770935

    申请日：1968-07-20

    Applicant: BASF AG

    Inventor： POHLEMANN HEINZ DR ,  ROEMER FRITHJOF DR ,  SWOBODA JOHANN DR

    IPC: C08F2/04 ,  C08F4/30 ,  C08F4/32 ,  C08F1/60

    Abstract: 1,266,779. Polymerization process. BADISCHE ANILIN- & SODA-FABRIK A.G. 18 July, 1969 [20 July, 1968], No. 36232/69. Heading C3P. One or more olefinically unsaturated organic compounds are polymerized in an organic solvent with a salt of peroxydisulphuric acid which is soluble in the organic solvent as a polymerization initiator. In the examples acrylonitrile, methyl acrylate and sodium methacryloyloxypropyl sulphonate are copolymerized in dimethyl formamide using one of the following as initiator:-bis - (n - butylammonium)-, bis-(benzylammonium)-, bis-(dimethylammonium)-, bis-(n-propylammonium)-, bis- (N - methyl - N - cyclohexylammonium)-, bis- (tert. - butylammonium)-, bis - (tri - 2 - hydroxyethylammonium)-, bis - (morpholino)-, bis - (pyridinium)-, bis - (pyrrolidinium)-, and bis - (N - methyl - N - benzylammonium) - peroxydisulphate.

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