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    Dioxazolone isocyanates
    4.
    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.

    Process for the production of aldimino- and ketimino-nitroaryl ethers
    5.
    发明授权
    Process for the production of aldimino- and ketimino-nitroaryl ethers 失效
    生产阿霉素和胆碱酯酶的方法

    公开(公告)号：US3626009A

    公开(公告)日：1971-12-07

    申请号：US3626009D

    申请日：1968-06-10

    申请人： BAYER AG

    发明人： ZECHER WILFRIED ,  MERTEN RUDOLF

    IPC分类号： C07D213/53 ,  C09B1/20 ,  C09B1/54 ,  C07C119/00

    CPC分类号： C07D213/53 ,  C09B1/205 ,  C09B1/547

    摘要： Production of aldimino- and ketimino- -nitroaryl ethers of the formula

    IN WHICH R1 is (m+n) -valent aryl, R2 and R3 each individually is selected from the group consisting of hydrogen, alkyl of up to eight carbon atoms, cycloalkyl, aralkyl, aryl and heterocyclic, with the proviso that R2 and R3 when taken together with the adjacent carbon atom to which they are attached form a ring selected from the group consisting of a 5- to 7-membered isocyclic and heterocyclic ring, m and n each individually is a number from one to two, R4 is (z+l) -valent aryl, and z is an number from one to two, by reacting the corresponding Schiff''s base of the formula

    IN WHICH R1, R2, R3, m and n are the same as defined above with an aromatic halo-nitro compound of the formula X -R4 (-NO2)z IN WHICH X is fluoro, chloro or bromo, and R4 and z are the same as defined above, e.g. at about -20* to +200* C., in the presence of an acid acceptor; said ethers being intermediates for producing plant protection agents, e.g. fungicides, dyes and plastics auxiliaries, e.g. for preparing polyimide molded bodies.

    Process for the production of polyimides
    10.
    发明授权
    Process for the production of polyimides 失效
    聚酰亚胺生产工艺

    公开(公告)号：US3669937A

    公开(公告)日：1972-06-13

    申请号：US3669937D

    申请日：1969-03-26

    申请人： BAYER AG

    发明人： ZECHER WILFRIED ,  MERTEN RUDOLF

    IPC分类号： C08G73/00 ,  C08G73/10 ,  C08G22/02

    CPC分类号： C08G73/1003

    摘要： Process for the production of polyimides by reaction of a urea and a cyclic dicarboxylic acid anhydride containing at least one additional functional group capable of condensation or addition.

    摘要翻译： 通过尿素和含有至少一个能够缩合或加成的另外的官能团的环状二羧酸酐的反应来生产聚酰亚胺的方法。