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    Carboxylated cellulose esters
    1.
    发明授权
    Carboxylated cellulose esters 失效
    羧化纤维素酯

    公开(公告)号：US5973139A

    公开(公告)日：1999-10-26

    申请号：US19554

    申请日：1998-02-06

    申请人： Benedict Moonsang Lee ,  Chung-Ming Kuo ,  Jessica Posey-Dowty ,  Larry Gerald Curtis

    发明人： Benedict Moonsang Lee ,  Chung-Ming Kuo ,  Jessica Posey-Dowty ,  Larry Gerald Curtis

    IPC分类号： C08B3/06 ,  C08B3/18 ,  C08B15/04 ,  C09D11/00 ,  C09D11/14 ,  C09D17/00 ,  C09D101/02 ,  C09D101/12 ,  C09D101/14 ,  C08B3/00 ,  C08B3/16 ,  C08L1/04 ,  C08L1/08

    CPC分类号： C08B3/06 ,  C08B15/04 ,  C08B3/18 ,  C09D101/02 ,  C09D101/12 ,  C09D101/14 ,  C09D11/14 ,  C09D17/00

    摘要： A process for preparing a carboxylated cellulose ester from oxidized cellulose is described. The carboxylated cellulose esters have improved solvent solubility and coating resin compatibility when compared to cellulose esters made from regular grade cellulose. The process comprises activating the oxidized cellulose with water. The activated oxidized cellulose is then dehydrated by displacing the water with acetic acid and optionally displacing at least some of the acetic acid with butyric acid or propionic acid. After dehydration the activated cellulose is reacted with an esterifying reagent in the presence of a catalyst at about 0.degree. C. The temperature is gradually increased to a level sufficient to complete reaction and to obtain an intrinsic viscosity ranging from about 0.2 to about 1.6 dl/g. The reacted solution is then hydrolyzed to obtain a hydroxyl content ranging from about 0.05 to about 1.0. The catalyst is neutralized with a neutralizing agent and the solution is optionally filtered and the carboxylated cellulose ester is then precipitated with a precipitating agent. The invention also relates to carboxylated cellulose esters prepared by the process described above as well as high solids coating compositions containing carboxylated cellulose esters made by the above process.

    摘要翻译： 描述了由氧化纤维素制备羧化纤维素酯的方法。 当与常规级纤维素制成的纤维素酯相比时，羧化纤维素酯具有改善的溶剂溶解性和涂料树脂相容性。 该方法包括用水活化氧化的纤维素。 然后将活化的氧化纤维素通过用乙酸置换水而脱水，并任选地用丁酸或丙酸置换至少一些乙酸。 脱水后，活化纤维素在约0℃下在催化剂存在下与酯化试剂反应。温度逐渐升高到足以完成反应的水平，得到约0.2至约1.6dl / G。 然后将反应的溶液水解，得到约0.05至约1.0的羟基含量。 用中和剂中和催化剂，任选地过滤溶液，然后用沉淀剂沉淀羧化纤维素酯。 本发明还涉及通过上述方法制备的羧化纤维素酯以及通过上述方法制备的含有羧化纤维素酯的高固含量涂料组合物。

    Device to measure the solidification properties of a liquid film and method therefor
    5.
    发明申请
    Device to measure the solidification properties of a liquid film and method therefor 有权

    公开(公告)号：US20060123890A1

    公开(公告)日：2006-06-15

    申请号：US11314255

    申请日：2005-12-21

    申请人： Kab Seo ,  Jessica Posey-Dowty

    发明人： Kab Seo ,  Jessica Posey-Dowty

    IPC分类号： G01N11/10

    CPC分类号： G01N11/14 ,  G01N2203/0092 ,  G01N2203/0094

    摘要： The present invention is directed to an apparatus and a method for monitoring the viscoelastic properties, of a liquid film (e.g. coating). The apparatus includes a substrate for supporting a liquid film and a T-bar probe that is partially submerged in the liquid film. The apparatus is designed to be attached to a conventional rheometer equipped with a means for effecting relative movement between the probe and the substrate and means for monitoring the resistance to movement of the probe in contact or partially submerged in the film to obtain a measurement of the solidification properties of the liquid film. This apparatus and method are particularly useful in comparing the effects of film formers, viscosity modifiers, solvents, and minerals on the drying rate of coatings at the early stage of film formation.

    Cyclodextrin solubilizers for liquid and semi-solid formulations
    6.
    发明申请
    Cyclodextrin solubilizers for liquid and semi-solid formulations 审中-公开
    用于液体和半固体制剂的环糊精增溶剂

    公开(公告)号：US20060105045A1

    公开(公告)日：2006-05-18

    申请号：US11268630

    申请日：2005-11-08

    申请人： Charles Buchanan ,  Norma Buchanan ,  Juanelle Lambert ,  Jessica Posey-Dowty

    发明人： Charles Buchanan ,  Norma Buchanan ,  Juanelle Lambert ,  Jessica Posey-Dowty

    IPC分类号： A61K31/724 ,  A61K9/14

    CPC分类号： A61K9/4866 ,  A61K9/4858 ,  A61K31/724 ,  A61K47/10 ,  A61K47/40

    摘要： This invention is directed to compositions comprising a water-miscible organic solvent or solvent mixture and one or more cyclodextrin derivatives soluble in the organic water-miscible organic solvent or solvent mixture. In some embodiments, the composition comprises one or more compounds. The invention is further directed to capsules containing the compositions of the present invention and the administration of pharmaceutically active compounds or molecules to subjects. The invention also includes methods of enhancing the solubility of a compound comprising forming a complex or mixture of a compound with a hydroxybutenyl cyclodextrin and a water-miscible solvent.

    摘要翻译： 本发明涉及包含水混溶性有机溶剂或溶剂混合物和一种或多种可溶于有机水混溶性有机溶剂或溶剂混合物的环糊精衍生物的组合物。 在一些实施方案中，组合物包含一种或多种化合物。 本发明还涉及含有本发明组合物和向受试者施用药物活性化合物或分子的胶囊。 本发明还包括提高包括形成化合物与羟基丁烯基环糊精和水混溶性溶剂的络合物或混合物的化合物的溶解度的方法。