利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

24 条记录 (耗时 0.016 秒)

    Process for improving stability of glycerin
    1.
    发明授权
    Process for improving stability of glycerin 失效
    提高甘油稳定性的方法

    公开(公告)号：US06784326B1

    公开(公告)日：2004-08-31

    申请号：US09098679

    申请日：1998-06-17

    申请人： Thomas Z. Li

    发明人： Thomas Z. Li

    IPC分类号： C07C3118

    CPC分类号： C07C29/94 ,  C07C31/225

    摘要： A process for inhibiting the oxidative degradation of glycerin involving adjusting the pH of glycerin to a range of either: (a) from about 3.5 to about 5.0; or (b) to from about 10.0 to about 12.0.

    摘要翻译： 一种抑制甘油氧化降解的方法，包括将甘油的pH调节至以下范围：（a）约3.5至约5.0; 或（b）至约10.0至约12.0。

    Catalysts and process for hydrogenolysis of sugar alcohols to polyols
    3.
    发明授权
    Catalysts and process for hydrogenolysis of sugar alcohols to polyols 有权
    用于将醇醇氢解成多元醇的催化剂和方法

    公开(公告)号：US06291725B1

    公开(公告)日：2001-09-18

    申请号：US09518860

    申请日：2000-03-03

    申请人： Shubham P. Chopade ,  Dennis J. Miller ,  James E. Jackson ,  Todd A. Werpy ,  John G. Frye, Jr. ,  Alan H. Zacher

    发明人： Shubham P. Chopade ,  Dennis J. Miller ,  James E. Jackson ,  Todd A. Werpy ,  John G. Frye, Jr. ,  Alan H. Zacher

    IPC分类号： C07C3118

    CPC分类号： C07C29/00 ,  C07C29/60 ,  C07C31/202 ,  C07C31/205 ,  C07C31/225

    摘要： The present invention provides a process for preparation of low molecular weight polyols from high molecular weight polyols in a hydrogenolysis reaction under elevated temperature and hydrogen pressure. The process comprises providing in a reaction mixture the polyols, a base, and a metal catalyst prepared by depositing a transition metal salt on an inert support, reducing the metal salt to the metal with hydrogen, and passivating the metal with oxygen, and wherein the catalyst is reduced with hydrogen prior to the reaction. In particular, the process provides for the preparation of glycerol, propylene glycol, and ethylene glycol from sugar alcohols such as sorbitol or xylitol. In a preferred process, the metal catalyst comprises ruthenium which is deposited on an alumina, titania, or carbon support, and the dispersion of the ruthenium on the support increases during the hydrogenolysis reaction.

    摘要翻译： 本发明提供了在升高的温度和氢气压力下在氢解反应中由高分子量多元醇制备低分子量多元醇的方法。 该方法包括在反应混合物中提供多元醇，碱和通过在惰性载体上沉积过渡金属盐制备的金属催化剂，用氢将金属盐还原成金属，并用氧钝化金属，其中 催化剂在反应之前用氢还原。 特别地，该方法提供从糖醇如山梨糖醇或木糖醇制备甘油，丙二醇和乙二醇。 在优选的方法中，金属催化剂包含沉积在氧化铝，二氧化钛或碳载体上的钌，并且在氢解反应期间钌在载体上的分散体增加。

    Pulverulent sorbitol and its process of preparation
    6.
    发明授权
    Pulverulent sorbitol and its process of preparation 有权
    肉桂山梨醇及其制备方法

    公开(公告)号：US06365789B2

    公开(公告)日：2002-04-02

    申请号：US09843305

    申请日：2001-04-25

    申请人： Franck Moraly ,  Erik Labergerie ,  José Lis ,  Philippe Lefevre ,  Frédéric Bouvier

    发明人： Franck Moraly ,  Erik Labergerie ,  José Lis ,  Philippe Lefevre ,  Frédéric Bouvier

    IPC分类号： C07C3118

    CPC分类号： A23G3/346 ,  A23L27/34 ,  A61K9/2018 ,  C07C31/26 ,  C07H3/06

    摘要： The invention relates to a pulverulent sorbitol, characterized in that it exhibits a hygroscopicity value, determined according to a test A, of less than 2%, preferably of less than 1.7%, and a specific surface, determined according to the BET method, at least equal to 2 m2/g, preferably at least equal to 2.2 m2/g, and also relates to its process of preparation. The invention also relates to compositions intended in particular for the food and pharmaceutical fields and to the use of the said pulverulent sorbitol in the preparation of tablets exhibiting a > texture.

    摘要翻译： 本发明涉及一种粉状山梨糖醇，其特征在于其根据试验A显示的吸湿性值小于2％，优选小于1.7％，并且根据BET法测定的比表面积 至少等于2m 2 / g，优选至少等于2.2m 2 / g，并且还涉及其制备方法。 本发明还涉及特别用于食品和药物领域的组合物，以及所述粉状山梨糖醇在制备呈现“口味平滑”质地的片剂中的用途。

    Method for producing aliphatic alcohols
    7.
    发明授权
    Method for producing aliphatic alcohols 有权
    生产脂肪醇的方法

    公开(公告)号：US06204417B1

    公开(公告)日：2001-03-20

    申请号：US09423876

    申请日：1999-11-15

    申请人： Rolf Fischer ,  Rolf Pinkos ,  Joachim Wulff-Döring

    发明人： Rolf Fischer ,  Rolf Pinkos ,  Joachim Wulff-Döring

    IPC分类号： C07C3118

    CPC分类号： C07C29/149 ,  B01J23/56 ,  B01J23/6567 ,  B01J23/89 ,  C07C31/12 ,  C07C31/207 ,  C07C31/125 ,  C07C31/20

    摘要： In a process for preparing aliphatic alcohols by hydrogenating aliphatic carboxylic acids or anhydrides or esters thereof or lactones in the presence of a catalyst comprising Pt and Re, in the form of the metal or an oxide in each case, the catalyst further comprises at least one further element from the groups 5 to 12 and 14 and the lanthanides of the Periodic Table of the Elements in the form of the metal or an oxide.

    摘要翻译： 在通过在包含Pt和Re的催化剂的存在下，在每种情况下以金属或氧化物的形式加氢脂族羧酸或其酸酐或其酯或内酯的方法中，催化剂还包含至少一种 第5〜12和14族的元素，元素周期表的镧系元素为金属或氧化物。

    Method for producing compounds with terminal OH groups
    8.
    发明授权
    Method for producing compounds with terminal OH groups 有权
    生产具有末端OH基团的化合物的方法

    公开(公告)号：US06566563B1

    公开(公告)日：2003-05-20

    申请号：US09720890

    申请日：2001-05-04

    申请人： Alfred Westfechtel ,  Roland Gruetzmacher ,  Elke Grundt

    发明人： Alfred Westfechtel ,  Roland Gruetzmacher ,  Elke Grundt

    IPC分类号： C07C3118

    CPC分类号： C08G64/0208 ,  C08G18/44 ,  C08G64/305

    摘要： A process for making OH-terminated compounds involving: (a) combining at least one CH2OH-terminated diol and a titanium-containing catalyst to form a reaction mixture; (b) heating the reaction mixture to a temperature of from 110 to 160° C. to form a heated reaction mixture; (c) continuously adding dimethyl carbonate to the heated reaction mixture; (d) continuously distilling all methanol released from the heated reaction mixture; (e) heating the reaction mixture to a temperature of from 190 to 240° C. to form an OH-terminated product; (f) removing unreleased methanol and dimethyl carbonate from the reaction mixture under a pressure of less than 100 mbar; and (g) deactivating the titanium-containing catalyst by adding from 0.8 to 2 equivalents, based on the catalyst, of a 1 to 20% by weight aqueous solution of phosphoric acid to the reaction mixture, at a temperature of from 80 to 120° C.

    摘要翻译： 一种制备OH封端化合物的方法，包括：（a）将至少一种CH 2 OH封端的二醇和含钛催化剂混合以形成反应混合物; （b）将反应混合物加热至110至160℃的温度以形成加热的反应混合物; （c）向加热的反应混合物中连续加入碳酸二甲酯; （d）连续蒸馏从加热的反应混合物中释出的所有甲醇; （e）将反应混合物加热至190-240℃的温度以形成OH封端的产物; （f）在小于100毫巴的压力下从反应混合物中除去未发酵的甲醇和碳酸二甲酯; 和（g）通过向反应混合物中加入基于催化剂的0.8至2当量的1至20重量％的磷酸水溶液，在80至120℃的温度下使含钛催化剂失活 C。

    Method of producing highly pure trimethylolpropane
    10.
    发明授权
    Method of producing highly pure trimethylolpropane 有权
    生产高纯度三羟甲基丙烷的方法

    公开(公告)号：US06344592B1

    公开(公告)日：2002-02-05

    申请号：US09467212

    申请日：1999-12-20

    申请人： Atsushi Iwamoto ,  Teruyuki Ninomiya ,  Toshio Watanabe ,  Takaki Ikebe

    发明人： Atsushi Iwamoto ,  Teruyuki Ninomiya ,  Toshio Watanabe ,  Takaki Ikebe

    IPC分类号： C07C3118

    CPC分类号： C07C29/38 ,  C07C29/76 ,  C07C29/80 ,  C07C31/22

    摘要： A method of producing a highly pure trimethylolpropane from a crude trimethylolpropane obtained by a reaction of n-butyl aldehyde and formaldehyde in the presence of a basic catalyst in a two-stage process of an aldol condensation and a crossed Cannizzaro reaction. Since a high-boiling component and an inorganic salt are removed in advance from the crude trimethylolpropane, hardly removable impurities such as condensation products in the crude trimethylolpropane are changed in the subsequent heat treatment under acidic conditions to components easily removable by distillation. By distilling the heat-treated crude trimethylolpropane, a highly pure trimethylolpropane with a low content of remaining formaldehyde and a low coloring degree is easily obtained.

    摘要翻译： 在碱式催化剂存在下，在醛醇缩合和交叉的坎尼扎罗反应的两阶段过程中，通过正丁醛和甲醛的反应获得的粗三羟甲基丙烷制备高纯度三羟甲基丙烷的方法。 由于预先从粗三羟甲基丙烷中除去高沸点组分和无机盐，所以在酸性条件下的后续热处理中，在粗三羟甲基丙烷中几乎不可除去的杂质如缩合产物发生变化，可以通过蒸馏容易地除去。 通过蒸馏热处理的粗三羟甲基丙烷，容易获得具有低残留甲醛含量和低着色度的高纯度三羟甲基丙烷。