Recovery of diluent in arylene sulfide polymer production
    22.
    发明授权
    Recovery of diluent in arylene sulfide polymer production 失效
    在亚硫酸盐聚合物生产中回收稀释液

    公开(公告)号:US3697487A

    公开(公告)日:1972-10-10

    申请号:US3697487D

    申请日:1971-05-05

    Inventor: CINES MARTIN R

    CPC classification number: C07D207/267 C08G75/0281 C08J11/02

    Abstract: A POLAR ORGANIC DILUENT SELECTED FROM AMIDES AND SULFONES IS EXTRACTED FROM AN AQUEOUS REACTION MIXTURE SOLID SLURRY. IN THE PRODUCTION OF ARYLENE SULFIDE POLYMERS BY THE REACTION OF A POLYHALO-SUBSTITUTED AROMATIC COMPOUND WITH AN ALKALI METAL SULFIDE IN A POLAR ORGANIC DILUENT, THE POLAR ORGANIC DILUENT IS RECOVERED BY EXTRACTION WITH A SOLVENT OF THE AQUEOUS MIXTURE OF REACTION EFFLUENT SOLIDS AND POLAR ORGANIC DILUENT. IN A PREFERRED EMBODIMENT N-METHYL-2-PYRROLIDONE IS RECOVERED FROM THE AQUEOUS REACTION MIXTURE SOLID SLURRY BY EXTRACTION WITH A SOLVENT SUCH AS DICHLORMETHANE OR BENZENE.

    Stomp foot having porous face
    23.
    发明授权
    Stomp foot having porous face 失效
    STOMP FOOP有多面体

    公开(公告)号:US3692890A

    公开(公告)日:1972-09-19

    申请号:US3692890D

    申请日:1969-11-13

    Inventor: CINES MARTIN R

    CPC classification number: B29C49/58 B29C49/04

    Abstract: A closed off end of a tubular thermoplastic parison is pressed against a back-up surface by means of a stomp foot having a porous face through which gaseous fluid is passed.

    Abstract translation: 管状热塑性型坯的封闭端通过具有气体流体通过的多孔面的脚踏板压靠在支撑表面上。

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