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15 条记录 (耗时 0.014 秒)

    Method for manufacturing betulinic acid
    1.
    发明授权
    Method for manufacturing betulinic acid 有权

    公开(公告)号：US06271405B1

    公开(公告)日：2001-08-07

    申请号：US09761351

    申请日：2001-01-16

    申请人： Pavel A. Krasutsky ,  Robert M. Carlson ,  Vitaliy V. Nesterenko

    发明人： Pavel A. Krasutsky ,  Robert M. Carlson ,  Vitaliy V. Nesterenko

    IPC分类号： C11C300

    摘要： The present invention provides a method for preparing betulin-3-acetate including alcoholyzing betulin 3,28-dibenzoate; a process for preparing betulin-3-acetate including: (1) acylating betulin to provide betulin 3,28-dibenzoate and (2) alcoholyzing betulin 3,28-dibenzoate to provide betulin-3-acetate; and a process for preparing betulinic acid including: (1) acylating betulin to provide betulin 3,28-dibenzoate; (2) alcoholyzing betulin 3,28-dibenzoate to provide betulin-3-acetate; (3) oxidizing betulin-3-acetate to provide betulinic aldehyde-3-acetate; (4) oxidizing betulinic aldehyde-3-acetate to provide betulinic acid-3-acetate; and (5) deprotecting betulinic acid-3 -acetate to provide betulinic acid.

    Optimized catalyst addition to enhance esterification catalyst performance
    5.
    发明授权
    Optimized catalyst addition to enhance esterification catalyst performance 失效
    优化催化剂加成酯化催化剂性能

    公开(公告)号：US06355817B1

    公开(公告)日：2002-03-12

    申请号：US09616329

    申请日：2000-07-15

    申请人： David G. Woods ,  Larry O. Jones ,  Pei-Yi Lo

    发明人： David G. Woods ,  Larry O. Jones ,  Pei-Yi Lo

    IPC分类号： C11C300

    CPC分类号： C07C67/08 ,  C07C69/80

    摘要： The present invention provides a process for the production of an ester, including reacting an alcohol with a carbonyl-like compound in the presence of a first esterification catalyst; and adding a second esterification catalyst to the reaction mixture at some time after initiation of the esterification reaction. The staged addition of the esterification catalyst according to the present invention provides a reduced reaction time to achieve a targeted conversion to esters.

    摘要翻译： 本发明提供一种生产酯的方法，包括在第一酯化催化剂存在下使醇与羰基化合物反应; 并在酯化反应开始后的某个时间向反应混合物中加入第二酯化催化剂。 根据本发明的分级加成酯化催化剂提供了缩短的反应时间以实现酯的目标转化。

    Synthesis of polyol fatty acid polyesters
    6.
    发明授权
    Synthesis of polyol fatty acid polyesters 有权
    多元醇脂肪酸聚酯的合成

    公开(公告)号：US06620952B1

    公开(公告)日：2003-09-16

    申请号：US09889051

    申请日：2001-09-04

    申请人： Patrick Joseph Corrigan

    发明人： Patrick Joseph Corrigan

    IPC分类号： C11C300

    CPC分类号： C07H13/06

    摘要： Processes for the synthesis of polyol fatty acid polyester by transesterification of a polyol comprise reacting polyol with a first portion of fatty acid lower alkyl ester to provide a first step reaction product in which substantially all of the polyol is reacted with at least one fatty acid lower alkyl ester. The process then employs a multistage column for further transesterification of the first step reaction product. Partially esterified polyol, a second portion of fatty acid lower alkyl ester and catalyst are fed to the column to form a mixture and cause further transesterification of the partially esterified polyol and fatty acid lower alkyl ester, with lower alkyl alcohol being formed as a by product. The resulting liquid mixture of reactants and product is passed in a first direction between adjacent stages through the column for further reaction of partially esterified polyol with fatty acid lower alkyl ester. An inert sparging gas is fed through the column in a second direction between adjacent stages, counter current to the flow of the liquid mixture between adjacent stages in the first direction. The inert gas is directed through the liquid mixture to provide gas induce turbulence, such that the column reactor has a column ratio of at least 0.4/hour.

    摘要翻译： 通过多元醇酯交换合成多元醇脂肪酸聚酯的方法包括使多元醇与脂肪酸低级烷基酯的第一部分反应，以提供第一步反应产物，其中基本上所有的多元醇与至少一种脂肪酸较低 烷基酯。 然后，该方法使用多级柱用于第一步反应产物的进一步酯交换。 将部分酯化的多元醇，第二部分的脂肪酸低级烷基酯和催化剂加入到塔中以形成混合物，并使部分酯化的多元醇和脂肪酸低级烷基酯进一步酯交换反应，形成低级烷基醇作为副产物 。 所得到的反应物和产物的液体混合物在相邻级之间的第一方向通过柱，用于部分酯化的多元醇与脂肪酸低级烷基酯的进一步反应。 惰性喷射气体在相邻级之间的第二方向通过塔进料，与第一方向上的相邻级之间的液体混合物的流动相反。 惰性气体被引导通过液体混合物以提供气体诱导湍流，使得塔式反应器具有至少0.4 /小时的柱比。

    Acetoacetic acid derivatives, process for their preparation and their use
    7.
    发明授权
    Acetoacetic acid derivatives, process for their preparation and their use 失效
    乙酰乙酸衍生物，其制备方法及其用途

    公开(公告)号：US06515154B2

    公开(公告)日：2003-02-04

    申请号：US09847300

    申请日：2001-05-03

    申请人： Klaus Ebel

    发明人： Klaus Ebel

    IPC分类号： C11C300

    CPC分类号： C07C69/716 ,  C07C45/61 ,  C07C45/62 ,  C07C45/66 ,  C07C45/676 ,  C07C67/347 ,  C07C49/385 ,  C07C49/587 ,  C07C49/04

    摘要： The present invention relates to acetoacetic acid derivatives of the formula Ia or Ib, to processes for their preparation and to their use for the preparation of 2,15-hexadecanedione. The invention further relates to the use of the compounds of the formula Ia or Ib where R is an optionally substituted straight-chain or branched C1-C6-alkyl, C1-C6-alkoxyalkyl or phenyl radical, alkoxy groups are a combination of an alkyl group according to the above definition with an oxygen atom, e.g. methoxy, ethoxy, propoxy, butoxy or pentoxy groups, which comprises adding an acetoacetic ester of the formula II to 1,9-decadiene by a free-radical means, as intermediate for the preparation of muscone (3-methylcyclopentadecanone).

    摘要翻译： 本发明涉及式Ia或Ib的乙酰乙酸衍生物，其制备方法及其用于制备2,15-十六烷二酮的用途。 本发明还涉及式Ia或Ib化合物的用途，其中R是任选取代的直链或支链C 1 -C 6烷基，C 1 -C 6烷氧基烷基或苯基，烷氧基是烷基 根据上述定义与氧原子，例如 甲氧基，乙氧基，丙氧基，丁氧基或戊氧基，其包括通过自由基手段加入式II-1,9-癸二烯的乙酰乙酸酯作为制备肌醇（3-甲基环十五烷酮）的中间体。

    Method of preparing lower alkyl fatty acids esters and in particular biodiesel
    9.
    发明授权
    Method of preparing lower alkyl fatty acids esters and in particular biodiesel 有权
    制备低级烷基脂肪酸酯，特别是生物柴油的方法

    公开(公告)号：US06398707B1

    公开(公告)日：2002-06-04

    申请号：US09867674

    申请日：2001-05-31

    申请人： Wen-Teng Wu ,  Jech-Wei Chen

    发明人： Wen-Teng Wu ,  Jech-Wei Chen

    IPC分类号： C11C300

    CPC分类号： C11C3/003 ,  C11C3/10 ,  C12N9/20 ,  C12P7/649 ,  Y02E50/13

    摘要： The present invention relates to a technique for enhancing the activity of an immobilized lipase, and a technique for regenerating a deactivated immobilized lipase, in which an alcohol with a carbon atom number not less than three is used to swell and/or clean said immobilized lipase. Said immobilized lipase is particularly useful in a method of preparing biodiesel by transesterification of triglycerides and a lower alcohol.

    摘要翻译： 本发明涉及一种提高固定化脂肪酶活性的技术，以及一种再生失活的固定化脂肪酶的技术，其中使用碳原子数不少于3的醇来溶胀和/或清洗所述固定化脂肪酶 。 所述固定化脂肪酶特别可用于通过甘油三酸酯和低级醇的酯交换制备生物柴油的方法。