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    Two stage oxidation process for the production of aromatic dicarboxylic acids
    3.
    发明授权
    Two stage oxidation process for the production of aromatic dicarboxylic acids 有权

    公开(公告)号：US07485747B2

    公开(公告)日：2009-02-03

    申请号：US10156312

    申请日：2002-05-28

    申请人： Ronald Buford Sheppard ,  Charles Edwan Sumner, Jr. ,  Brent Alan Tennant

    发明人： Ronald Buford Sheppard ,  Charles Edwan Sumner, Jr. ,  Brent Alan Tennant

    IPC分类号： C07C51/16 ,  C07C51/42

    CPC分类号： C07C51/265 ,  C07C63/26

    摘要： Disclosed is a process for producing a benzenedicarrboxylic acid such as terephthalic acid wherein a dialkyl benzene compound and acetic acid having catalyst components dissolved therein are fed to a first reaction zone wherein the dialkyl benzene compound is oxidized with molecular oxygen to provide a first oxidation zone product comprising a benzenedicarboxylic acid containing minor amounts of mono-carboxylic acid by-products such as carboxybenzaldehyde and toluic acid. The first oxidation zone product comprising a slurry of a benzenedicarboxylic acid containing minor amounts of mono-carboxylic acid by-products is fed to a second oxidation reaction zone that is operated under more severe conditions of temperature and pressure. The rate of the feed of a molecular oxygen containing gas to the second oxidation zone is about 3% or less of the the rate of the feed of the molecular oxygen containing gas to the first oxidation zone. The benzenedicarboxylic acid product obtained contains a total concentration of carboxybenzaldehyde and toluic acid of about 150 ppmw or less.

    Processes for the preparation of higher molecular weight ketones
    5.
    发明授权
    Processes for the preparation of higher molecular weight ketones 失效
    用于制备较高分子量酮的方法

    公开(公告)号：US06979751B2

    公开(公告)日：2005-12-27

    申请号：US10713727

    申请日：2003-11-14

    申请人： Jennifer Ellen McCusker-Orth ,  Brent Alan Tennant ,  James Charles Ciula

    发明人： Jennifer Ellen McCusker-Orth ,  Brent Alan Tennant ,  James Charles Ciula

    IPC分类号： C07C45/73 ,  C07C45/72

    CPC分类号： C07C45/73 ,  C07C49/04

    摘要： Processes for producing higher molecular weight ketones are disclosed that include the steps of feeding an aldol catalyst solution, a lower molecular weight aldehyde, and a lower molecular weight ketone, through a reactor provided with a solid hydrogenation catalyst and hydrogen gas; recovering a liquid reactor effluent containing the higher molecular weight ketone as a reaction product; and recycling a portion of the recovered liquid reactor effluent back through the reactor.

    摘要翻译： 公开了用于制备较高分子量酮的方法，其包括通过设置有固体氢化催化剂和氢气的反应器进料醛醇催化剂溶液，低分子量醛和低分子量酮的步骤; 回收含有较高分子量酮作为反应产物的液体反应器流出物; 并将一部分回收的液态反应器流出物再循环通过反应器。

    INTEGRATED PROCESS FOR THE PREPARATION OF 1,4-CYCLOHEXANEDIMETHANOL FROM TEREPHTHALIC ACID
    8.
    发明申请
    INTEGRATED PROCESS FOR THE PREPARATION OF 1,4-CYCLOHEXANEDIMETHANOL FROM TEREPHTHALIC ACID 有权
    用于从正十二酸制备1,4-环己烷基甲醇的一体化方法

    公开(公告)号：US20130030220A1

    公开(公告)日：2013-01-31

    申请号：US13194040

    申请日：2011-07-29

    申请人： Brent Alan Tennant

    发明人： Brent Alan Tennant

    IPC分类号： C07C29/149

    CPC分类号： C07C67/303 ,  C07C29/149 ,  C07C29/80 ,  C07C67/08 ,  C07C2601/14 ,  Y02P20/125 ,  Y02P20/582 ,  C07C69/82 ,  C07C69/75 ,  C07C31/276

    摘要： Disclosed is an integrated process for the preparation of 1,4-cyclohexanedimethanol from terephthalic acid. Terephthalic acid is esterified with (4-methylcyclohexyl)methanol and the terephthalate ester hydrogenated to 1,4-cyclohexanedimethanol in a 2-stage process. The (4-methylcyclohexyl)methanol that is formed during the hydrogenation step is recycled to the esterification reaction. Also disclosed is a method for purifying and recovering the 1,4-cyclohexanedimethanol product.

    摘要翻译： 公开了从对苯二甲酸制备1,4-环己烷二甲醇的综合方法。 对苯二甲酸用（4-甲基环己基）甲醇酯化，对苯二甲酸酯在2阶段过程中氢化成1,4-环己烷二甲醇。 在氢化步骤中形成的（4-甲基环己基）甲醇被再循环至酯化反应。 还公开了1,4-环己烷二甲醇产物的纯化和回收方法。