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6 条记录 (耗时 0.023 秒)

    Process for the preparation of diaminoresorcinol
    1.
    发明授权
    Process for the preparation of diaminoresorcinol 失效
    制备二氨基间苯二酚的方法

    公开(公告)号：US5414130A

    公开(公告)日：1995-05-09

    申请号：US173547

    申请日：1993-12-23

    申请人： Zenon Lysenko ,  Richard G. Pews ,  Paul Vosejpka

    发明人： Zenon Lysenko ,  Richard G. Pews ,  Paul Vosejpka

    IPC分类号： B01J23/44 ,  C07B61/00 ,  C07C205/06 ,  C07C205/12 ,  C07C213/00 ,  C07C213/02 ,  C07C215/80 ,  C07C209/36

    CPC分类号： C07C213/02

    摘要： A method of producing 4,6-diaminoresorcinol comprisinga) reducing a dinitroarylether of the formula: ##STR1## wherein R is hydrogen, C.sub.1 -C.sub.6 alkyl, cycloalkyl or CH.dbd.CH.sub.2, R' is hydrogen or CH.sub.2 --R, each A is independently Cl, Br, or I, and n is 0, 1 or 2; to form a diaminoarylether, andb) cleaving the ether group(s) from the diaminoarylether under conditions such that 4,6-diaminoresorcinol is formed as a salt or other stabilized form thereof.

    摘要翻译： 一种制备4,6-二氨基间苯二酚的方法，其包括a）还原下式的二硝基醚：其中R是氢，C1-C6烷基，环烷基或CH = CH2，R'是氢或CH2-R，每个A是 独立地为Cl，Br或I，n为0,1或2; 形成二氨基芳基醚，和b）在形成4,6-二氨基间苯二酚作为盐或其它稳定形式的条件下，从二氨基醚开裂醚基团。

    Catalysts and methods for polymerizing macrocyclic oligomers
    4.
    发明申请
    Catalysts and methods for polymerizing macrocyclic oligomers 失效
    用于聚合大环低聚物的催化剂和方法

    公开(公告)号：US20060025562A1

    公开(公告)日：2006-02-02

    申请号：US11110051

    申请日：2005-04-20

    申请人： Robert Dion ,  Brian Jazdzewski ,  Francis Timmers ,  Keith Watson ,  Paul Vosejpka

    发明人： Robert Dion ,  Brian Jazdzewski ,  Francis Timmers ,  Keith Watson ,  Paul Vosejpka

    IPC分类号： C08G63/87

    CPC分类号： C08G63/85 ,  C08G63/181 ,  C08G2650/34

    摘要： Cyclic oligomers containing ester linkages are polymerized in the presence of a catalyst having at least one oxygen atom bonded to two metal atoms. At least one of the metal atoms is a tin atom, which is preferably tetravalent, i.e., bonded to three other groups in addition to the oxygen atom. The other metal atom may also be another tin atom, which is again preferably tetravalent, or a zinc, aluminum or titanium atom. The catalyst may contain multiple oxygen atoms that are bonded to two such metal atoms as described. These catalysts are active, efficient polymerization catalysts. They are often liquids at polymerization temperatures. The catalysts can be formed in situ in the polymerization process, which provides additional flexibility in the process and increased storage stability of starting materials.

    摘要翻译： 含有酯键的环状低聚物在具有键合至两个金属原子的至少一个氧原子的催化剂存在下聚合。 至少一个金属原子是锡原子，其优选是四价的，即除了氧原子之外还与三个其它基团键合。 另一个金属原子也可以是另一个锡原子，其又优选为四价，或者是锌，铝或钛原子。 催化剂可以含有多个氧原子，其与所述的两个这样的金属原子键合。 这些催化剂是活性的，有效的聚合催化剂。 它们在聚合温度下通常是液体。 催化剂可以在聚合过程中原位形成，这在工艺中提供了额外的灵活性并提高了原料的储存稳定性。

    Preparation of 4,6-diaminoresorcinol through a bisazoarylresorcinol intermediate
    5.
    发明授权
    Preparation of 4,6-diaminoresorcinol through a bisazoarylresorcinol intermediate 失效
    通过双偶氮芳基间苯二酚中间体制备4,6-二氨基间苯二酚

    公开(公告)号：US5453542A

    公开(公告)日：1995-09-26

    申请号：US201297

    申请日：1994-02-24

    申请人： Ted A. Morgan ,  Bassam S. Nader ,  Paul Vosejpka ,  Weshi Wu ,  Andrew S. Kende

    发明人： Ted A. Morgan ,  Bassam S. Nader ,  Paul Vosejpka ,  Weshi Wu ,  Andrew S. Kende

    IPC分类号： B01J23/44 ,  C07B61/00 ,  C07C213/02 ,  C07C215/82 ,  C07C245/08 ,  C09B41/00

    CPC分类号： C09B41/001 ,  C07C245/08

    摘要： The present invention is a method of preparing a 4,6-bisarylazoresorcinol comprising reacting an aryldiazonium salt and resorcinol in the presence of a base and a reaction medium containing water and a water-miscible solvent at a temperature in the range of about -5.degree. C to about -60.degree. C. The present invention is also a method of preparing a 2-substituted 4,6-bisarylazoresorcinol comprising reacting an aryldiazonium salt with a 2-substituted resorcinol. The 4,6-bisarylazoresorcinol or 2-substituted 4,6-bisarylazoresorcinol can then be hydrogenated to a 4,6-diaminoresorcinol, which is a precursor to polybisbenzoxazoles (PBOs), polymers which are useful as insulators, solar arrays, and tear-resistant gloves.

    摘要翻译： 本发明是一种制备4,6-二芳基氮杂环戊二烯的方法，包括在碱和含有水和水混溶性溶剂的反应介质存在下，在约-5℃的温度下使芳基重氮盐和间苯二酚反应 本发明也是制备2-取代的4,6-二芳基氮杂环戊醇的方法，包括使芳基重氮盐与2-取代的间苯二酚反应。 然后可以将4,6-二芳基氮杂环戊二烯或2-取代的4,6-二芳基氮杂环戊二烯氢化成4,6-二氨基间苯二酚，其是聚双苯并恶唑（PBO）的前体，可用作绝缘体，太阳能阵列和撕裂 - 防护手套