中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

12 records (took 0.098 seconds)

    Silver halide photographic material comprising pyridinium carbamoyl hardeners
    2.
    发明授权
    Silver halide photographic material comprising pyridinium carbamoyl hardeners 失效
    包含吡啶鎓氨基甲酰基硬化剂的卤化银照相材料

    公开(公告)号：US5607827A

    公开(公告)日：1997-03-04

    申请号：US531714

    申请日：1995-09-21

    Applicant: Mark P. Kirk ,  Stefano Parodi ,  Paolo Vacca

    Inventor： Mark P. Kirk ,  Stefano Parodi ,  Paolo Vacca

    IPC: G03C1/005 ,  G03C1/035 ,  G03C1/047 ,  G03C1/30

    CPC classification number: G03C1/30 ,  G03C1/0051 ,  G03C1/047

    Abstract: The present invention relates to a silver halide photographic material comprising a support and at least one silver halide emulsion layer coated thereon, wherein said silver halide photographic material comprises tabular silver halide grains having an average aspect ratio higher than 3:1 dispersed in highly deionized gelatin, and a pyridinium carbamoyl hardener having the following formula: ##STR1## wherein R.sub.1 and R.sub.2 each independently represents an alkyl group having from 1 to carbon atoms, an aryl group having from 6 to 15 carbon atoms, an aralkyl group having from 7 to 15 carbon atoms, or R.sub.1 and R.sub.2 together form the atoms required to complete a heterocyclic ring, R.sub.3 represents a hydrogen atom, a halogen atom, an alkyl group having from 1 to 10 carbon atoms, an alkoxy group having from 1 to 10 carbon atoms, a carbamoyl group, a ureido group, and R.sub.4 represents an alkylene group having from 1 to 4 carbon atoms or a single chemical bond.

    Abstract translation: 本发明涉及一种卤化银照相材料，其包含载体和涂覆有至少一种卤化银乳剂层，其中所述卤化银照相材料包含分散在高度去离子明胶中的平均长宽比高于3:1的片状卤化银颗粒 和具有下式的吡啶鎓氨基甲酰基硬化剂：其中R 1和R 2各自独立地表示具有1至碳原子的烷基，具有6至15个碳原子的芳基，具有7至15个碳原子的芳烷基 碳原子或R 1和R 2一起形成完成杂环所需的原子，R 3表示氢原子，卤素原子，具有1至10个碳原子的烷基，具有1至10个碳原子的烷氧基， 氨基甲酰基，脲基，R 4表示碳原子数1〜4的亚烷基或单个化学键。

    Process for preparing carbamoyl pyridinium compounds
    7.
    发明授权
    Process for preparing carbamoyl pyridinium compounds 失效
    制备氨基甲酰吡啶鎓化合物的方法

    公开(公告)号：US5559239A

    公开(公告)日：1996-09-24

    申请号：US459782

    申请日：1995-06-02

    Applicant: Paolo Vacca ,  Marco Frezzati

    Inventor： Paolo Vacca ,  Marco Frezzati

    IPC: C07D213/30 ,  C07D213/34 ,  C07D213/71 ,  C07D401/06 ,  C07D413/06 ,  C07D213/81

    CPC classification number: C07D213/30 ,  C07D213/34 ,  C07D213/71 ,  C07D401/06

    Abstract: A process for synthesizing carbamoyl pyridinium compounds is described, in which the pyridine ring carries a sulfoalkyl group. The process comprises reacting a pyridine sulfonic acid with a carbamoyl chloride in the presence of a tert.-amine compound in a ketone solvent. The reactants are highly soluble in the ketone solvent, while, on the contrary, the carbamoyl pyridinium compounds and the tert.-ammonium halides formed by the reaction are not soluble in the ketone solvent and can be recovered from the reaction mixture. In a subsequent washing step with a selective solvent, for example in methanol in which carbamoyl pyridinium compounds are not soluble but tert.-ammonium halides are highly soluble, substantially pure carbamoyl pyridinium compounds can be obtained in high yields.

    Abstract translation: 描述了合成氨基甲酰吡啶鎓化合物的方法，其中吡啶环带有磺基烷基。 该方法包括在叔胺溶剂中，在叔胺化合物存在下使吡啶磺酸与氨基甲酰氯反应。 反应物在酮溶剂中高度可溶，而相反，氨基甲酰吡啶鎓化合物和通过该反应形成的叔卤化铵不溶于酮溶剂，并可从反应混合物中回收。 在随后的选择性溶剂洗涤步骤中，例如在其中氨基甲酰吡啶鎓化合物不溶于但是卤化铵非常可溶的甲醇中，可以高产率获得基本上纯的氨基甲酰吡啶鎓化合物。

Patent Agency Ranking