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    PROCESS FOR REMOVING CATALYSTS FROM POLYPHENYLENE ETHERS
    1.
    发明专利
    PROCESS FOR REMOVING CATALYSTS FROM POLYPHENYLENE ETHERS 未知

    公开(公告)号：DE3462510D1

    公开(公告)日：1987-04-09

    申请号：DE3462510

    申请日：1984-07-03

    Applicant: BASF AG

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

    IPC: C08G65/46

    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 SEPARATION OF CATALYSTS FROM POLYPHENYLENE ETHERS
    7.
    发明专利
    PROCESS FOR THE SEPARATION OF CATALYSTS FROM POLYPHENYLENE ETHERS 未知

    公开(公告)号：DE3363393D1

    公开(公告)日：1986-06-12

    申请号：DE3363393

    申请日：1983-07-23

    Applicant: BASF AG

    Inventor： HAMBRECHT JUERGEN DR ,  REFFERT RUDI WILHELM ,  MUENCH VOLKER DR ,  ECHTE ADOLF DR ,  SWOBODA JOHANN DR

    IPC: C08G65/46

    Abstract: High molecular weight polyphenylene ethers are prepared from monohydric phenols by an oxidative coupling reaction with oxygen in the presence of a catalyst complex obtained from a copper salt and an organic amine by a method wherein the metal component of the catalyst is separated off, after the polymerization, by the addition of a polymeric polycarboxylic acid which is essentially composed of unsaturated monofunctional or difunctional carboxylic acids and/or their anhydrides. Advantageously, the polymeric polycarboxylic acids used are homopolymers or copolymers of (a) from 50 to 100% by weight of one or more unsaturated monofunctional acids of 3 to 10 carbon atoms and/or one or more difunctional acids or their anhydrides of 4 to 6 carbon atoms and from 0 to 50% by weight of one or more monomers which do not possess an acid function and can be copolymerized with (a).

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