利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

205 条记录 (耗时 0.023 秒)

    METHOD FOR COOLING A MELAMINE MELT
    3.
    发明公开
    METHOD FOR COOLING A MELAMINE MELT 审中-公开
    VERFAHREN ZURKÜHLUNGEINER MELAMINSCHMELZE

    公开(公告)号：EP2907808A1

    公开(公告)日：2015-08-19

    申请号：EP13845206.5

    申请日：2013-09-09

    申请人： Otkrytoe Aktsionernoe Obschestvo Research & Design Institute Of Urea And Organic Synthesis Products (OAO NIIK)

    发明人： NIKOLAEV, Evgeny Yuryevich ,  SKUDIN, Alexei Georgievich ,  PECHNIKOVA, Galina Nikolaevna ,  PROKOPYEV, Aleksandr Alekseevich ,  KUZNETSOV, Nikolai Mikhailovich ,  KOSTIN, Oleg Nikolaevich ,  ESIN, Igor Veniaminovich

    IPC分类号： C07D251/60

    CPC分类号： C07D251/60 ,  C07D251/54

    摘要： The invention relates to methods for cooling a melamine melt using water and aqueous solutions. The invention can be used in industrial production of melamine. The method for cooling a melamine melt involves cooling a melamine melt with water to temperature of 130-230°C in a cooling zone, with evaporation of water and formation of solid melamine-water vapour gaseous suspension. Melamine is removed from the cooling zone in form of solid melamine-water vapour gaseous suspension. Before removal from the cooling zone, nitrogen, air or a mixture thereof can be added to the formed solid melamine-water vapour gaseous suspension. The technical result which can be achieved using the invention is lowering degree of hydrolysis of melamine when cooling melamine melt with water as well as a simplification of the process.

    摘要翻译： 本发明涉及使用水和水溶液冷却三聚氰胺熔体的方法。 本发明可用于工业生产三聚氰胺。 用于冷却三聚氰胺熔体的方法包括在冷却区中用水将三聚氰胺熔体冷却至130-230℃，蒸发水并形成固体三聚氰胺 - 水蒸汽气态悬浮液。 三聚氰胺以固体三聚氰胺 - 水蒸汽气态悬浮液的形式从冷却区中除去。 在从冷却区中取出之前，可将氮气，空气或其混合物加入到形成的固体三聚氰胺 - 水蒸汽气态悬浮液中。 使用本发明可以实现的技术结果是在用水冷却三聚氰胺熔体时降低三聚氰胺的水解度以及简化工艺。

    DIETHYLHEXYL BUTAMIDO TRIAZONE WITH HIGH PURITY, AND PROCESS FOR ITS PREPARATION
    6.
    发明公开
    DIETHYLHEXYL BUTAMIDO TRIAZONE WITH HIGH PURITY, AND PROCESS FOR ITS PREPARATION 审中-公开
    DIETHYLHEXYLBUTAMIDOTRIAZON高纯度和方法及其

    公开(公告)号：EP2838886A1

    公开(公告)日：2015-02-25

    申请号：EP13717445.4

    申请日：2013-03-25

    申请人： 3V SIGMA S.p.A

    发明人： MAESTRI, Francesco ,  BEMPORAD, Luca ,  BERTE', Ferruccio

    IPC分类号： C07D251/54 ,  A61K8/49

    CPC分类号： C07D251/54 ,  A61K8/4966 ,  A61Q17/04

    摘要： Disclosed is the compound of formula (I), known by the name of diethylhexyl butamido triazone, characterised by a low content of impurities deriving from the preparation process, and by low APHA colour values. The compound according to the invention is obtained by reacting cyanuryl chloride with one equivalent of para-aminobenzoic acid, reacting the intermediate obtained with two equivalents of 2-ethylhexyl-4- aminobenzoate, activating the carboxy group, for example by formation of acyl chloride, and final reaction with tert-butylamine. The compound according to the invention is a UV-B filter which can be advantageously used in cosmetic formulations.