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37 条记录 (耗时 0.028 秒)

    Method for reducing carbonate decomposition in reaction mixtures
    1.
    发明授权
    Method for reducing carbonate decomposition in reaction mixtures 失效
    降低反应混合物中碳酸盐分解的方法

    公开(公告)号：US06441215B1

    公开(公告)日：2002-08-27

    申请号：US09681791

    申请日：2001-06-06

    申请人： Kirill Vladimirovich Shalyaev ,  Eric James Pressman ,  John Edward Hallgren ,  John Yaw Ofori ,  Jonathan Lloyd Male

    发明人： Kirill Vladimirovich Shalyaev ,  Eric James Pressman ,  John Edward Hallgren ,  John Yaw Ofori ,  Jonathan Lloyd Male

    IPC分类号： C07C6800

    CPC分类号： C07C68/08 ,  C07C69/96

    摘要： The present invention is directed to a method for reducing the percent decomposition of an aromatic carbonate in a first reaction mixture comprising the aromatic carbonate, the method comprising the step of adding at least one decomposition-reducing additive to the first reaction mixture, so as to produce a second reaction mixture in which the percent of the aromatic carbonate present in the second reaction mixture after a predetermined amount of time is greater than the percent of the aromatic carbonate that would be present in the first reaction mixture in the absence of adding the decomposition-reducing additive, after the same predetermined amount of time.

    摘要翻译： 本发明涉及一种降低包含芳族碳酸酯的第一反应混合物中芳族碳酸酯分解百分比的方法，该方法包括向第一反应混合物中加入至少一种分解还原添加剂，以便于 产生第二反应混合物，其中在预定时间后存在于第二反应混合物中的芳族碳酸酯的百分比大于在不加入分解的情况下将存在于第一反应混合物中的芳族碳酸酯的百分比 在相同的预定量的时间之后。

    Process for the production of diaryl carbonates
    2.
    发明授权
    Process for the production of diaryl carbonates 失效
    碳酸二芳基酯的制备方法

    公开(公告)号：US06472551B2

    公开(公告)日：2002-10-29

    申请号：US10121102

    申请日：2002-04-11

    申请人： John Yaw Ofori ,  Eric James Pressman ,  Kirill Vladimirovich Shalyaev ,  Eric Douglas Williams ,  Richard Anthony Battista

    发明人： John Yaw Ofori ,  Eric James Pressman ,  Kirill Vladimirovich Shalyaev ,  Eric Douglas Williams ,  Richard Anthony Battista

    IPC分类号： C07C6996

    CPC分类号： C07C68/005 ,  C07C69/96

    摘要： A process for catalytic production of diaryl carbonates by oxidative carbonylation of aromatic hydroxy compounds with carbon monoxide and oxygen achieves water removal during reaction by a process comprising the steps of: removing a liquid stream from an oxidative carbonylation reaction mixture in a reaction vessel, subjecting the liquid stream to reduced pressure, and returning at least a portion of dried liquid stream to the reaction vessel. Typical catalyst systems for oxidative carbonylation contain (A) at least one Group 8, 9, or 10 metal having an atomic number of at least 44 or a compound thereof; (B) at least one alkali metal salt; (C) at least one metal co-catalyst; (D) at least one activating organic solvent; and (E) optionally, at least one base.

    摘要翻译： 通过芳族羟基化合物与一氧化碳和氧气的氧化羰基化催化生产碳酸二芳酯的方法通过包括以下步骤的方法在反应过程中实现水去除：在反应容器中从氧化羰基化反应混合物中除去液体物流， 液体流减压，并将至少一部分干燥的液体流返回到反应容器中。 用于氧化羰基化的典型催化剂体系含有（A）至少一种原子数为至少44的第8,9或10族金属或其化合物; （B）至少一种碱金属盐; （C）至少一种金属助催化剂; （D）至少一种活化有机溶剂; 和（E）任选的至少一个碱。

    Process for the production of diaryl carbonates
    4.
    发明授权
    Process for the production of diaryl carbonates 失效
    碳酸二芳基酯的制备方法

    公开(公告)号：US06384262B1

    公开(公告)日：2002-05-07

    申请号：US09961753

    申请日：2001-09-24

    申请人： John Yaw Ofori ,  Eric James Pressman ,  Kirill Vladimirovich Shalyaev ,  Eric Douglas Williams ,  Richard Anthony Battista

    发明人： John Yaw Ofori ,  Eric James Pressman ,  Kirill Vladimirovich Shalyaev ,  Eric Douglas Williams ,  Richard Anthony Battista

    IPC分类号： C07C6996

    CPC分类号： C07C68/005 ,  C07C69/96

    摘要： A process for catalytic production of diaryl carbonates by oxidative carbonylation of aromatic hydroxy compounds with carbon monoxide and oxygen achieves water removal during reaction by a process comprising the steps of: removing a liquid stream from an oxidative carbonylation reaction mixture in a reaction vessel, subjecting the liquid stream to reduced pressure, and returning at least a portion of dried liquid stream to the reaction vessel. Typical catalyst systems for oxidative carbonylation contain (A) at least one Group 8, 9, or 10 metal having an atomic number of at least 44 or a compound thereof; (B) at least one guanidinium salt or onium salt; and (C) at least one metal co-catalyst.

    摘要翻译： 通过芳族羟基化合物与一氧化碳和氧气的氧化羰基化催化生产碳酸二芳酯的方法通过包括以下步骤的方法在反应过程中实现水去除：在反应容器中从氧化羰基化反应混合物中除去液体物流， 液体流减压，并将至少一部分干燥的液体流返回到反应容器中。 用于氧化羰基化的典型催化剂体系含有（A）至少一种原子数为至少44的第8,9或10族金属或其化合物; （B）至少一种胍盐或鎓盐; 和（C）至少一种金属助催化剂。

    Catalyst composition and method for producing diaryl carbonates, using bisphosphines
    6.
    发明授权
    Catalyst composition and method for producing diaryl carbonates, using bisphosphines 失效
    催化剂组合物和使用双膦生产碳酸二芳基酯的方法

    公开(公告)号：US06407027B2

    公开(公告)日：2002-06-18

    申请号：US09813394

    申请日：2001-03-21

    申请人： Grigorii Lev Soloveichik ,  Ben Purushatom Patel ,  John Yaw Ofori ,  Kirill Vladimirovich Shalyaev

    发明人： Grigorii Lev Soloveichik ,  Ben Purushatom Patel ,  John Yaw Ofori ,  Kirill Vladimirovich Shalyaev

    IPC分类号： B01J3100

    CPC分类号： C07C68/005 ,  C07C69/96

    摘要： Hydroxyaromatic compounds such as phenol are carbonylated with oxygen and carbon monoxide in the presence of a catalyst system comprising a Group VIII metal, preferably palladium; at least one bromide or chloride salt, preferably sodium bromide or a tetraalkylammonium bromide; at least one organic bisphosphine such as 1,3-bis(diphenylphosphino)propane or 1,4-bis(diphenylphosphino)butane; and a compound of a metal other than a Group VIII metal having an atomic number of at least 44, preferably a lead bromophenoxide. There may also be present a polar organic liquid as a cosolvent.

    摘要翻译： 在含有第Ⅷ族金属，优选钯的催化剂体系存在下，用氧和一氧化碳将羟基芳族化合物如苯酚羰基化; 至少一种溴化物或氯化物盐，优选溴化钠或四烷基溴化铵; 至少一种有机双膦，如1,3-双（二苯基膦基）丙烷或1,4-双（二苯基膦基）丁烷; 以及原子序数为44以上的Ⅷ族金属以外的金属的化合物，优选为铅溴化物。 也可能存在极性有机液体作为助溶剂。