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    • 1. 发明授权
    • Polymerization inhibitor and inhibiting method for vinyl compound
    • 聚合抑制剂和乙烯基化合物的抑制方法
    • US5371280A
    • 1994-12-06
    • US788326
    • 1991-11-05
    • Hidefumi HaramakiKazuhiko SakamotoMasatoshi UeokaYohji AkazawaMasao Baba
    • Hidefumi HaramakiKazuhiko SakamotoMasatoshi UeokaYohji AkazawaMasao Baba
    • C07C7/20C07C51/50C07C57/075C07C67/62C07C57/04B01D3/34
    • C07C7/20C07C51/50C07C67/62
    • This invention is directed to a polymerization inhibitor and a polymerization inhibiting method which enables the continuous operation of a device for producing vinyl compounds over a long period of time and virtually eliminates corrosion. Further, the polymerization inhibitors according to the present invention are superior in polymerization inhibition when transferring and storing the vinyl compound products and in other cases. The polymerization inhibitor according to the present invention contains manganese dithiocarbamate or a thiuram compound as an effective component. The polymerization inhibiting method of this invention comprises individual or joint use of said inhibitors, or joint use of a copper salt, another manganese salt, or quinones in addition to said inhibitors. Further, the method may comprise jointly using copper dithiocarbamates in a manganese salt as polymerization inhibitors, or jointly using quinones in addition to the salts.
    • 本发明涉及聚合抑制剂和聚合抑制方法,其能够长时间地连续操作用于生产乙烯基化合物的装置,并且实际上消除了腐蚀。 此外,根据本发明的聚合抑制剂在转移和储存乙烯基化合物产品时的聚合抑制性优异,在其它情况下也是优异的。 本发明的阻聚剂含有二硫代氨基甲酸锰或秋兰姆化合物作为有效成分。 除了所述抑制剂之外,本发明的聚合抑制方法包括单独或联合使用所述抑制剂,或联合使用铜盐,另一种锰盐或醌。 此外,该方法可以包括在锰盐中联合使用二硫代氨基甲酸铜作为聚合抑制剂,或者除了盐之外共同使用醌。
    • 4. 发明授权
    • Process for producing acrylic ester
    • 制备丙烯酸酯的方法
    • US07491841B2
    • 2009-02-17
    • US11822521
    • 2007-07-06
    • Hidefumi HaramakiManabu Matsui
    • Hidefumi HaramakiManabu Matsui
    • C07C67/48
    • C07C67/08C07C67/54C07C69/54
    • A process for producing an acrylic ester using acrylic acid and an aliphatic or alicyclic alcohol having from 5 to 8 carbon atoms, as raw materials, and using a strongly acidic cation exchange resin as a catalyst. In such a process for producing an acrylic ester, a crude acrylic ester withdrawn from the bottom of a low-boiling separation column is supplied to a rectifying column, a rectified acrylic ester is taken out from the top of the rectifying column, while a high-boiling substance containing an acrylic ester, which is withdrawn from the bottom of the rectifying column, is supplied to a high-boiling separation column and/or a thin-film evaporator to separate it into an acrylic ester component and a high-boiling substance, and the separated acrylic ester component is taken out as a distillate and supplied to the low-boiling separation column for its recovery.
    • 使用丙烯酸和具有5〜8个碳原子的脂肪族或脂环族醇作为原料,使用强酸性阳离子交换树脂作为催化剂来制造丙烯酸酯的方法。 在这样的丙烯酸酯的制造方法中,将从低沸点分离塔的底部排出的粗丙烯酸酯供给到精馏塔,从精馏塔的顶部取出精制丙烯酸酯, 将从精馏塔底部排出的含有丙烯酸酯的沸腾物质供给至高沸点分离塔和/或薄膜蒸发器,将其分离成丙烯酸酯成分和高沸点物质 ,分离出的丙烯酸酯组分作为馏出物取出,供给低沸点分离塔进行回收。
    • 6. 发明申请
    • Process for producing acrylic ester
    • 制备丙烯酸酯的方法
    • US20080015384A1
    • 2008-01-17
    • US11822521
    • 2007-07-06
    • Hidefumi HaramakiManabu Matsui
    • Hidefumi HaramakiManabu Matsui
    • C07C69/00
    • C07C67/08C07C67/54C07C69/54
    • A process for producing an acrylic ester with excellent economic efficiency, which can eliminate the conventional problems to maintain the stable quality and the low unit consumption of raw materials, in the process for producing an acrylic ester using acrylic acid containing high-boiling acid components influencing the loss in quality and the unit consumption of raw materials, and an aliphatic or alicyclic alcohol having from 5 to 8 carbon atoms, as raw materials, and using a strongly acidic cation exchange resin as a catalyst. In such a process for producing an acrylic ester, a crude acrylic ester withdrawn from the bottom of a low-boiling separation column is supplied to a rectifying column, a rectified acrylic ester is taken out from the top of the rectifying column, while a high-boiling substance containing an acrylic ester, which is withdrawn from the bottom of the rectifying column, is supplied to a high-boiling separation column and/or a thin-film evaporator to separate it into an acrylic ester component and a high-boiling substance, and the separated acrylic ester component is taken out as a distillate and supplied to the low-boiling separation column for its recovery.
    • 丙烯酸酯的制造方法,在丙烯酸酯的制造方法中,使用含有高沸点酸成分的丙烯酸,影响丙烯酸酯的制造方法,其具有经济效益优异的丙烯酸酯的制造方法,能够消除常规问题,维持原料的稳定品质和低的单位消耗 原料的质量损失和单位消耗量,具有5〜8个碳原子的脂肪族或脂环族醇作为原料,使用强酸性阳离子交换树脂作为催化剂。 在这样的丙烯酸酯的制造方法中,将从低沸点分离塔的底部排出的粗丙烯酸酯供给到精馏塔,从精馏塔的顶部取出精制丙烯酸酯, 将从精馏塔底部排出的含有丙烯酸酯的沸腾物质供给至高沸点分离塔和/或薄膜蒸发器,将其分离成丙烯酸酯成分和高沸点物质 ,分离出的丙烯酸酯组分作为馏出物取出,供给低沸点分离塔进行回收。
    • 8. 发明授权
    • Process for producing (meth) acrylic acid
    • (甲基)丙烯酸的制造方法
    • US5872288A
    • 1999-02-16
    • US990522
    • 1997-12-15
    • Hidefumi HaramakiOsamu DodoMamoru Takamura
    • Hidefumi HaramakiOsamu DodoMamoru Takamura
    • C07C57/07C07C51/42
    • C07C51/42Y10S203/22
    • The present invention provides a process for producing (meth)acrylic acid by gas-phase catalytic oxidation, which comprises cooling and condensing a (meth)acrylic acid-containing reaction product gas to obtain a crude aqueous (meth)acrylic acid solution; cooling the aqueous solution to deposit the impurities contained in the aqueous solution, as solid matter; separating the solid matter; and then extracting and separating (meth)acrylic acid from the purified aqueous (meth)acrylic acid solution obtained. Unlike the conventional processes in which (meth)acrylic acid is extracted and separated from a crude aqueous (meth)acrylic acid solution, the present process can avoid various troubles caused by the impurities contained in the crude aqueous (meth)acrylic acid solution, for example, generation of scum and the like, and therefore can produce (meth)acrylic acid at a higher purity than in the conventional processes.
    • 本发明提供一种通过气相催化氧化制备(甲基)丙烯酸的方法,其包括冷却并冷凝含(甲基)丙烯酸的反应产物气体,得到粗的(甲基)丙烯酸水溶液; 冷却水溶液以沉积包含在水溶液中的杂质,作为固体物质; 分离固体物质; 然后从得到的纯化的(甲基)丙烯酸水溶液中萃取分离(甲基)丙烯酸。 与从(甲基)丙烯酸粗水溶液中提取(甲基)丙烯酸并分离的常规方法不同,本方法可以避免由粗制的(甲基)丙烯酸水溶液中所含的杂质引起的各种麻烦, 例如,生成浮渣等,因此可以以比常规方法更高的纯度生产(甲基)丙烯酸。