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182 条记录 (耗时 0.011 秒)

    Method for making aromatic ether anhydrides and products made thereby
    55.
    发明授权
    Method for making aromatic ether anhydrides and products made thereby 失效
    制造芳香族醚类和其制品的方法

    公开(公告)号：US3850965A

    公开(公告)日：1974-11-26

    申请号：US34647273

    申请日：1973-03-30

    申请人： GEN ELECTRIC

    发明人： WILLIAMS F

    IPC分类号： C07C51/567 ,  C07D307/89 ,  C08G59/42 ,  C07D7/18

    CPC分类号： C08G59/4223 ,  C07C51/567 ,  C07D307/89 ,  C07C65/24 ,  C07C65/21

    摘要： 1. A METHOD FOR MAKING AROMATIC ETHER ANHYDRIDES OF THE FORMULAS,



    1,3-DI(O=),(R-X-)-1H,3H-NAPHTHO(1,8-CD)-PYRAN

    WHICH COMPRISES, (1) EFFECTING REACTION BETWEEN AN ALKALI METAL PHENOXIDE OF THE FORMULA

    R-X-M,

    AND A NITRO- OR HALO-SUBSTITUTED AROMATIC ANHYDRIDE SELECTED FROM COMPOUNDS OF THE FORMULAS,

    1,3-DI(O=),Y-PHTHALAN

    1,3-DI(O=),Y-1H,3H-NAPHTHO(1,8-CD)-PYRAN
    WHERE Y CAN BE NITRO, CHLORO, FLUORO, BROMO, OR IODO, (2) AND RECOVERING FROM THE RESULTING MIXTURE OF (1), AN AROMATIC ETHER ANHYDRIDE, WHERE M IS AN ION OF AN ALKALI METAL SELECTED FROM SODIUM, POTASSIUM, LITHIUM AND RUBIDIUM, AND R IS AN AROMATIC RADICAL HAVING FROM 6-13 CARBON ATOMS SELECTED FROM THE CLASS CONSISTING OF PHENYL, TOLYL, XYLYL, NAPHTHYL, ANTHRYL, AND HALOGENATED DERIVATES THEREOF, AND X IS A DIVALENT RADICAL SELECTED FROM -S- AND -O-.
    1,3-DI(O=),(R-X-)-PHTHALAN

    Fast cure epoxy resin coating powders containing adducts of trimellitic anhydride and polyols
    57.
    发明授权
    Fast cure epoxy resin coating powders containing adducts of trimellitic anhydride and polyols 失效
    快速固化环氧树脂涂料粉末含有三聚氰胺和聚醇的添加剂

    公开(公告)号：US3555111A

    公开(公告)日：1971-01-12

    申请号：US3555111D

    申请日：1968-03-19

    申请人： DEXTER CORP

    发明人： BENHAM RONALD C

    IPC分类号： C08G59/42 ,  C08G59/68 ,  C09D5/46 ,  C08G45/00 ,  C08G45/14

    CPC分类号： C08G59/4223 ,  C08G59/688 ,  Y10S525/93

    摘要： POWERED EPOXY RESIN COATING COMPOSITIONS CONSISTING ESSENTIALLY OF A SOLID, ESSENTIALLY LINEAR, EPOXY RESIN HAVING A MOLECULAR WEIGHT OF 2000 TO 6000 AND AN EPOXIDE EQUIVALENCY OF ABOUT 2, A POLYOL-TRIMELLITIC ANHYDRIDE HARDENER SELECTED FROM THE GROUP CONSISTING OF ADDUCTS OF TRIMELLITIC ANHYDRIDE WITH A POLYOL CONTAINING AT LEAST 3 ALCOHOL GROUPS WHICH HAS BEEN INCREASED IN MOLECULAR WEIGHT TO 400-1500 BY ADDITION OF A LOWER ALKYLENE OXIDE, AND POLYOLS CONTAINING AT LEAST SIX ALCOHOL GROUPS, SAID HARDENER PROVIDING TWO ACIDS GROUPS FOR EACH ALCOHOL GROUP OF THE STARTING POLYOL, SAID COMPOSITION CONTAINING APPROXIMATELY ONE EPOXIDE EQUIVALENT OF RESIN TO EACH ACID EQUIVALENT OF ADDUCT, AND A RAPID CURE CATALYST IN THE PROPORTION OF ABOUT 0.2% TO 1.0% BY WEIGHT OF SAID COMPOSITION. WHILE VARIOUS CATALYSTS CAN BE EMPLOYED, THE PREFERRED CATALYST IS TRIPHENYL PHOSPHINE IN THE PROPORTION OF ABOUT 0.2% TO 0.3%.