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    METHOD FOR PRODUCING DEUTERATED METHYL METHACRYLATE
    4.
    发明公开
    METHOD FOR PRODUCING DEUTERATED METHYL METHACRYLATE 审中-公开
    用于生产氘化的甲基丙烯酸甲酯

    公开(公告)号：EP1661880A4

    公开(公告)日：2006-12-13

    申请号：EP04772872

    申请日：2004-09-01

    申请人： TAIYO NIPPON SANSO CORP

    发明人： SUGANO YUICHI ,  ABE TAKAFUMI ,  ABE TOSHIFUMI

    IPC分类号： C07C67/20 ,  C07C67/22 ,  C07B61/00 ,  C07C69/54

    CPC分类号： C07B59/001 ,  C07B2200/05 ,  C07C67/20 ,  C07C69/54

    摘要： A method for producing MMA-d8 which comprises a step of exchanging D in the hydroxyl group of methanol-d4 represented by the formula: CD3OD with H to prepare the methanol-d3 represented by the formula: CD3OH and simultaneously recovering a deuterium-containing compound, and a step of reacting the methanol-d3 with a sulfuric acid salt of methacrylic acid amide represented by the formula CD2=C(CD3)CONH2·H2SO4, to prepare MMA-d8 represented by the formula: CD2=C(CD3)COOCD3. The above method can be employed for producing MMA-d8 with good efficiency while circulating expensive deuterium atoms being by-produced in an above reaction process .

    Improved process for methacrylic acid and methacrylic acid ester production
    6.
    发明公开
    Improved process for methacrylic acid and methacrylic acid ester production 有权
    用于生产甲基丙烯酸和甲基丙烯酸的改进的方法

    公开(公告)号：EP1359137A1

    公开(公告)日：2003-11-05

    申请号：EP03252723.6

    申请日：2003-04-30

    申请人： Rohm and Haas

    发明人： Carlson, Jr., Curtis Ingstad ,  Decourcy, Michael Stanley ,  Juliette, Jamie Jerrick John

    IPC分类号： C07C51/08 ,  C07C67/22

    CPC分类号： C07C51/06 ,  C07C67/22 ,  C07C57/04 ,  C07C69/54

    摘要： Provided herein are improved methods for producing methacrylic acid and methacrylate esters using combined or "integrated" processing steps including integrated hydrolysis, integrated cracking systems, and combinations thereof. In one embodiment, other aspects of an methacrylic acid and methacrylate ester production trains are integrated. Also provided are methods to purify crude methacrylic acid streams to form glacial methacrylic acid that is at least 95% pure.

    摘要翻译： 在改进的方法提供了用于生产使用组合的或“集成”处理包括集成水解步骤甲基丙烯酸和甲基丙烯酸酯，集成裂化系统，以及它们的组合。 在一个实施方案中，甲基丙烯酸和甲基丙烯酸酯的生产列车的其他方面被一体化。 所以提供了方法来纯化粗产物甲基丙烯酸流，以形成冰甲基丙烯酸并是至少95％纯。