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    Aromatic mono(nitrile carbonates)
    2.
    发明授权
    Aromatic mono(nitrile carbonates) 失效
    芳香甘油（NITRILE CARBONATES）

    公开(公告)号：US3560519A

    公开(公告)日：1971-02-02

    申请号：US3560519D

    申请日：1969-03-28

    申请人： SINCLAIR RESEARCH INC

    发明人： BURK EMMETT H JR ,  CARLOS DONALD D

    IPC分类号： C07D273/00 ,  C07D85/06

    CPC分类号： C07D273/00

    摘要： COMPOUNDS OF THE FORMULA

    5-R-1,3,4-DIOXAZOL-2-ONE

    WHEREIN R IS AN AROMATIC HYDROCARBON RADICAL OF 1 TO 3 AROMATIC RINGS WHICH CAN BE SUBSTITUTED WITH, FOR INSTANCE, HALOGEN, NITRO, OR ALKOXY, E.G., METHOXY, GROUPS EXCEPT THAT WHEN R IS MONOCYCLIC, R IS SUBSTITUTED ON THE RING WITH AT LEAST ONE OF THE AFOREMENTIONED GROUPS. THE COMPOUNDS CAN BE MADE BY REACTING THE CORRESPONDING HYDROXAMIC ACIDS AND PHOSGENE.

    Cyclic nitrile carbonate group containing chloroformates
    4.
    发明授权
    Cyclic nitrile carbonate group containing chloroformates 失效
    包含氯化碳的循环碳酸酯组

    公开(公告)号：US3737435A

    公开(公告)日：1973-06-05

    申请号：US3737435D

    申请日：1970-09-02

    申请人： ATLANTIC RICHFIELD CO

    发明人： BURK E ,  CARLOS D

    IPC分类号： C07D273/00 ,  C08F28/06 ,  C07D85/06

    CPC分类号： C07D273/00 ,  C08F28/06

    摘要： A MULTI-STEP PROCESS FOR PREPARING ETHYLENICALLY-UNSATURATED CYCLIC NITRILE CARBONATE COMPOUNDS SUCH AS ETHENE NITRILE CARBONATE,

    CH2=CH-C
    IS DISCLOSED. A LACETONE IS FIRST REACTED WITH HYDROXYLAMINE TO OBTAIN A HYDROXYL GROUP-CONTAINING MONOHYDROXAMIC ACID:

    O HO-R-CO-NH-OH

    THE HYDROXAMIC ACID IS THEN PHOSGENATED TO OBTAIN A CYCLIC NITRILE CARBONATE GROUP-CONTAINING CHLOROFORMATE:

    HO-R-CO-NH-OH AND (CL-CO-CL)2 -> CL-COO-R-C
    CO-O-) AND (H-CL)3

    THE CHLOROFORMATE IS THEN CONTACTED WITH AN ORGANIC, TERTIRARY AMINE HAVING A PK VALUE BELOW ABOUT 5 TO EFFECT DECARBOXYLATION AND DEHYDROCHLORINATION OF THE CHLOROFORMATE AND PRODUCTION OF AN ETHYLENICALLY-UNSATURATED CYCLIC NITRILE CARBONATE COMPOUND SUCH AS ETHENE NITRILE CARBONATE, SHOWN ABOVE. THUS, THE ETHYLENICALLY-UNSATURATED CYCLIC NITRILE CARBONATE COMPOUNDS CAN ENTER INTO ADDITION POLYMERIZATION REACTIONS AS WELL AS CONDENSATION REACTIONS WITH LABILE HYDROGEN-CONTAINING COMPOUNDS TO YIELD A VARIETY OF POLYMERIC MATERIALS, SUCH AS POLYURETHANES, WHICH CAN BE EMPLOYED IN COATING AND MOLDING COMPOSITIONS.

    Aromatic-poly(nitrile carbonates)
    8.
    发明授权
    Aromatic-poly(nitrile carbonates) 失效
    芳族聚碳酸酯（NITRILE CARBONATES）

    公开(公告)号：US3560518A

    公开(公告)日：1971-02-02

    申请号：US3560518D

    申请日：1968-03-18

    申请人： SINCLAIR RESEARCH INC

    发明人： BURK EMMETT H JR ,  CARLOS DONALD D

    IPC分类号： C07D273/00 ,  C07D85/06

    CPC分类号： C07D273/00

    摘要： THERE ARE DISCLOSED COMPOUNDS OF THE FORMULA:

    (2-(O=)-1,3,4-DIOXAZOL-5-YL)(N+1)-A

    WHEREIN N IS AN INTEGER OF 1 TO 3 AND A IS AROMATIC HYDROCARBON OF UP TO ABOUT 30 CARBON ATOMS AND OF 2 TO 3 MONOCYCLIC AROMATIC RINGS OR ONE FUSED BICYCLIC AROMATIC RING OR ONE FUSED TRICYCLIC AROMATIC RING. THE COMPOUNDS CAN BE MADE BY REACTING THE CORRESPONDING HYDROXAMIC ACIDS AND PHOSGENE. THE COMPOUNDS ARE USEFUL AS, INTER ALIA, AROMATIC POLYISOCYANATE GENERATORS AND HAVE THE ADVANTAGE OVER CONVENTIONAL AROMATIC POLYISOCYANATES IN THAT THEY CAN BE EASILY HANDLED AND STORED.

    Dioxazolone isocyanates
    10.
    发明授权
    Dioxazolone isocyanates 失效
    二氧杂环己烷异氰酸酯

    公开(公告)号：US3859299A

    公开(公告)日：1975-01-07

    申请号：US30678472

    申请日：1972-11-15

    申请人： BAYER AG

    发明人： HOCKER JURGEN ,  MERTEN RUDOLF

    IPC分类号： C07D273/00 ,  C07D273/01 ,  C07D85/06

    CPC分类号： C07D273/00

    摘要： Compounds of the formula

    WHEREIN R is a divalent radical corresponding to c1 to C18 alkyl, C7 to C18 aralkyl or C6 to C14 aryl. These compounds are useful as isocyanate precursor compounds in the preparation of polyurethane plastics by the well-known polyaddition process simply by heating.