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    PROCESS FOR THE PREPARATION OF POLY(PHENYLENE ETHERS) AND THEIR USE FOR THE PRODUCTION OF MOULDED ARTICLES
    134.
    发明专利
    PROCESS FOR THE PREPARATION OF POLY(PHENYLENE ETHERS) AND THEIR USE FOR THE PRODUCTION OF MOULDED ARTICLES 未知

    公开(公告)号：DE3560286D1

    公开(公告)日：1987-07-30

    申请号：DE3560286

    申请日：1985-04-01

    Applicant: BASF AG

    Inventor： MUENCH VOLKER DR ,  HAMBRECHT JUERGEN DR ,  HIMMELE WALTER DR ,  ECHTE ADOLF DR ,  SWOBODA JOHANN DR

    IPC: C08G65/44 ,  C08L71/04

    Abstract: High molecular weight polyphenylene ethers are prepared from monohydric phenols by an oxidative coupling reaction with oxygen in the presence of a solvent and of a catalyst complex consisting of a copper salt and an organic amine of the general formula where R1 is C2-C20-alkylidene, preferably C2-C12-alkylidene, or alkenylidene, R2 is H or C1-C12-alkyl, preferably C1-C4-alkyl, or C5-C8-cycloalkyl, each of which is unsubstituted or substituted by functional groups, and n is an integer from 1 to 4, preferably 1 or 2. Preferred functional groups are -OR3, -NHR3 or -SR3, in which R3 is H C1-C12-alkyl or C5-C8-cycloalkyl, and the most suitable amines are 3-tert.-butoxypropylamine, 4-tert.-butoxybutylamine, 3-tert.-butoxy-2-methylpropylamine, 3-tert.-butoxy-2,3-dimethylpropylamine, 3-tert.-butoxy-2-methyloctylamine and N-methyl-N-(4-tert.-butoxybutyl)-amine. The polyphenylene ethers can be processed to moldings by a thermoplastic method.

    PROCESS FOR STABILISING POLY(PHENYLENE ETHER) SOLUTIONS
    136.
    发明专利
    PROCESS FOR STABILISING POLY(PHENYLENE ETHER) SOLUTIONS 未知

    公开(公告)号：DE3368425D1

    公开(公告)日：1987-01-29

    申请号：DE3368425

    申请日：1983-09-08

    Applicant: BASF AG

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

    IPC: C08G65/46

    Abstract: A process for the preparation of high molecular weight polyphenylene ethers from alkyl-substituted monohydric phenols by an oxidative coupling reaction with oxygen in the presence of a catalyst complex of a copper salt and an organic amine, subsequent stopping of the reaction and removal of the metal component of the catalyst by addition of chelating and/or salt-forming agents, wherein the polymer solution is treated with a compound having the general structure: where R2 and R3 can be identical or different and each is OH, NH2, NHR5, where R5 is alkyl or cycloalkyl, or SH, and where R1 and R4 are identical or different, being hydrogen, alkyl, cycloalkyl, aryl, carbonyl, carboxyl, carboxyalkyl or nitrile, and can be linked to form a ring, advantageously in an amount of from 0.1 to 100 mmoles and advantageously in from 1 to 20% strength aqueous solutions.

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