Method for producing methacrylic acid acrylic acid with a combination of enzyme catalysts
    31.
    发明授权
    Method for producing methacrylic acid acrylic acid with a combination of enzyme catalysts 失效
    用酶催化剂组合生产甲基丙烯酸和丙烯酸的方法

    公开(公告)号:US06670158B2

    公开(公告)日:2003-12-30

    申请号:US10067652

    申请日:2002-02-05

    IPC分类号: C12P1300

    CPC分类号: C12P7/40

    摘要: The invention provides a process for the hydrolysis of acrylonitrile to acrylic acid, and for the hydrolysis of methacrylonitrile to methacrylic acid, in high yield and at high concentration with high specificity. Acrylonitrile or methacrylonitrile is hydrolyzed in a suitable aqueous reaction mixture by a catalyst characterized by a nitrile hydratase and amidase activity of Comamonas testosteroni 5-MGAM-4D, producing the corresponding acid. The acrylic acid or methacrylic acid is isolated as the acid or corresponding salt.

    摘要翻译: 本发明提供了一种将丙烯腈水解成丙烯酸,并以高产率和高浓度高特异性水解甲基丙烯腈至甲基丙烯酸的方法。 丙烯腈或甲基丙烯腈在合适的水性反应混合物中通过催化剂水解,其特征在于产生相应酸的腈水合酶和酰胺酶活性的Comamonas testosteroni 5-MGAM-4D。 分离丙烯酸或甲基丙烯酸作为酸或相应的盐。

    Ionic liquids
    33.
    发明授权
    Ionic liquids 失效
    离子液体

    公开(公告)号:US07625941B2

    公开(公告)日:2009-12-01

    申请号:US11525751

    申请日:2006-09-22

    IPC分类号: A61K31/4015 C07D207/12

    CPC分类号: C07D207/27

    摘要: The present invention relates to compositions of matter that are useful as ionic liquids. The compositions of the invention are based on an N-substituted pyrrolidinone, said pyrrolidinone having a pendant ammonium cation that is separated from the pyrrolidone ring by a variable length alkyl spacer. The compositions comprise fluoroalkyl sulfonate anions.

    摘要翻译: 本发明涉及可用作离子液体的物质组合物。 本发明的组合物基于N-取代的吡咯烷酮,所述吡咯烷酮具有通过可变长度的烷基间隔物与吡咯烷酮环分离的侧铵阳离子。 组合物包含氟烷基磺酸根阴离子。

    Hydrogenation of 3,4-tetrahydrofurandiol to tetrahydrofuran
    40.
    发明授权
    Hydrogenation of 3,4-tetrahydrofurandiol to tetrahydrofuran 有权
    将3,4-四氢呋喃二醇氢化成四氢呋喃

    公开(公告)号:US06593481B1

    公开(公告)日:2003-07-15

    申请号:US10292557

    申请日:2002-11-12

    申请人: Leo Ernest Manzer

    发明人: Leo Ernest Manzer

    IPC分类号: C07D30702

    CPC分类号: C07D307/08

    摘要: Disclosed is a method whereby 3,4-tetrahydrofurandiol is hydrogenated in the presence of Rh, Re, Pd, Ru and Ni catalysts, optionally supported, to form tetrahydrofuran and its precursors.

    摘要翻译: 公开了在任选负载的Rh,Re,Pd,Ru和Ni催化剂存在下氢化3,4-四氢呋喃二醇以形成四氢呋喃及其前体的方法。