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11 条记录 (耗时 0.026 秒)

    Process for manufacture of imidazoles
    1.
    发明授权
    Process for manufacture of imidazoles 有权
    咪唑制造方法

    公开(公告)号：US06177575B1

    公开(公告)日：2001-01-23

    申请号：US09193700

    申请日：1998-11-17

    申请人： Anthony J. Arduengo, III ,  Frederick P. Gentry, Jr. ,  Prakash K. Taverkere ,  Howard E. Simmons, III

    发明人： Anthony J. Arduengo, III ,  Frederick P. Gentry, Jr. ,  Prakash K. Taverkere ,  Howard E. Simmons, III

    IPC分类号： C07D23358

    CPC分类号： C07D231/12 ,  C07D233/56 ,  C07D249/08

    摘要： Imidazoles may be manufactured by reacting a glyoxal, ammonia, an aldehyde, and optionally a primary amine, in the presence of a Bronsted acid whose pKa is approximately equal to the pKa of the ammonium cation of the primary amine, or if the primary amine is not present, to the pKa of the ammonium (NH4+) cation. The reaction may be used to make in relatively high yields a wide variety of imidazoles using relatively inexpensive starting materials. The imidazoles are useful as chemical intermediates.

    摘要翻译： 咪唑可以通过使乙二醛，氨，醛和任选的伯胺在其pKa大约等于伯胺的铵阳离子的pKa的布朗斯台德酸的存在下反应来制备，或者如果伯胺是 不存在于铵（NH 4 +）阳离子的pKa中。 该反应可以用相对高的产率制备各种各样的使用相对便宜的起始原料的咪唑。 咪唑可用作化学中间体。

    Complexing agent for displacement tin plating
    4.
    发明授权
    Complexing agent for displacement tin plating 失效
    移位镀锡复合剂

    公开(公告)号：US5196053A

    公开(公告)日：1993-03-23

    申请号：US799136

    申请日：1991-11-27

    申请人： John R. Dodd ,  Anthony J. Arduengo, III ,  Randal D. King ,  Americus C. Vitale

    发明人： John R. Dodd ,  Anthony J. Arduengo, III ,  Randal D. King ,  Americus C. Vitale

    IPC分类号： C23C18/31 ,  H05K3/24 ,  H05K3/46

    CPC分类号： C23C18/31 ,  H05K2203/073 ,  H05K3/244

    摘要： An environmentally innocuous effective replacement for thiourea is disclosed for use as a complexing agent in displacement plating processes in which the plating solution is applied to the substrate surface to be plated by immersion or by spraying, cascading, pouring and the like. The replacement complexing agent is an imidazole-2-thione compound having the formula: ##STR1## wherein A and B are the same or different --R--Y groups, wherein R is linear, branched or cyclic alkenyl group containing 1 to 12 carbon atoms and Y is a hydrogen, halogen, cyano, vinyl, phenyl, or ether moiety. Of this class of compounds, 1-methyl-3-propyl-imidazole-2-thione is preferred for immersion tin plating. This class of complexing agents is particularly useful in spray displacement tin plating for the manufacture of printed circuit boards wherein free tin metal is added to the plating solution.

    1,3-dialkylimidazole-2-thione catalysts and method of making same
    6.
    发明授权
    1,3-dialkylimidazole-2-thione catalysts and method of making same 失效
    1,3-二烷基咪唑-2-硫酮催化剂及其制备方法

    公开(公告)号：US5162482A

    公开(公告)日：1992-11-10

    申请号：US649430

    申请日：1991-01-31

    申请人： Anthony J. Arduengo, III

    发明人： Anthony J. Arduengo, III

    IPC分类号： C07D233/84 ,  C08G59/68 ,  C09D163/00

    CPC分类号： C08G59/687 ,  C07D233/84 ,  C09D163/00

    摘要： The present invention discloses 1,3-dialkylimidazole-2-thiones catalysts for epoxy/anhydride reactions (and other reactions) and a method of making these catalysts. Epoxy/anhydride coatings containing these improved catalysts offer the following advantages: improved appearance (especially since even weeks after application the coatings still have a "wet" look); better pot-life; improved resistance to alkaline substances which will improve durability; improved solubility; and coatings which have a reduced volatile organic content (VOC).

    摘要翻译： 本发明公开了用于环氧/酸酐反应的1,3-二烷基咪唑-2-硫酮催化剂（和其它反应）和制备这些催化剂的方法。 含有这些改进的催化剂的环氧/酸酐涂层具有以下优点：外观改善（特别是涂层后几周甚至还具有“湿”外观）; 更好的适应期; 改善耐碱性，提高耐久性; 改善溶解度; 和具有降低的挥发性有机物含量（VOC）的涂层。

    Solventless one-step process for the production of imidazole-2-thiones
    7.
    发明授权
    Solventless one-step process for the production of imidazole-2-thiones 失效
    用于生产咪唑-2-硫酮的无溶剂一步法

    公开(公告)号：US07868182B2

    公开(公告)日：2011-01-11

    申请号：US11622883

    申请日：2007-01-12

    申请人： Anthony J. Arduengo, III

    发明人： Anthony J. Arduengo, III

    IPC分类号： C07D233/30

    CPC分类号： C07D233/84

    摘要： A novel solventless process is described for the preparation of imidazole-2-thiones. The new solventless process tolerates a variety of bases as co-reactants which introduces feedstock flexibility into the process while the solventless feature renders the process more environmentally friendly by eliminating volatile organic solvents from the process, reducing energy consumption (associated with solvent recovery and/or recycling), and allows shorter reaction time and workup. Furthermore, the elimination of solvents enhances workplace safety by obviating the need for flammable and/or toxic solvents.

    摘要翻译： 描述了用于制备咪唑-2-硫酮的新型无溶剂方法。 新的无溶剂方法耐受各种碱作为共反应物，其将原料灵活性引入该方法，而无溶剂特征通过从该方法中除去挥发性有机溶剂使得该方法更环保，降低能量消耗（与溶剂回收和/或 回收），并允许更短的反应时间和后处理。 此外，消除溶剂通过消除对易燃和/或有毒溶剂的需要增强了工作场所的安全性。

    Curable compositions containing 1,3-dialkylimidazole-2-thione catalysts
    10.
    发明授权
    Curable compositions containing 1,3-dialkylimidazole-2-thione catalysts 失效
    含有1,3-二烷基咪唑-2-硫酮催化剂的固化组合物

    公开(公告)号：US5091498A

    公开(公告)日：1992-02-25

    申请号：US657737

    申请日：1991-02-19

    申请人： Anthony J. Arduengo, III ,  Robert J. Barsotti ,  Patrick H. Corcoran

    发明人： Anthony J. Arduengo, III ,  Robert J. Barsotti ,  Patrick H. Corcoran

    IPC分类号： C08G59/68 ,  C08K5/405 ,  C09D133/14 ,  C09D163/00

    CPC分类号： C09D163/00 ,  C08G59/687 ,  C08K5/405 ,  C09D133/14

    摘要： The present invention describes the use of 1,3-dialkylimidazole-2-thiones as a catalyst for epoxy/anhydride reactions (and other reactions) and a method of making these catalysts. Epoxy/anhydride coatings containing these improved catalysts offer the following advantages: improved appearance (especially since even weeks after application the coatings still have a "wet" look); better pot-life; improved resistance to alkaline substances which will improve durability; improved solubility; and coatings which have a reduced volatile organic content (VOC).

    摘要翻译： 本发明描述了1,3-二烷基咪唑-2-硫酮作为环氧/酸酐反应（和其他反应）的催化剂的用途和制备这些催化剂的方法。 含有这些改进的催化剂的环氧/酸酐涂层具有以下优点：外观改善（特别是涂层后几周甚至还具有“湿”外观）; 更好的适应期; 改善耐碱性，提高耐久性; 改善溶解度; 和具有降低的挥发性有机物含量（VOC）的涂层。