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    Process for preparing fine-particle polysaccharide derivatives
    1.
    发明授权
    Process for preparing fine-particle polysaccharide derivatives 有权
    微粒多糖衍生物的制备方法

    公开(公告)号：US06320043B1

    公开(公告)日：2001-11-20

    申请号：US09341412

    申请日：1999-07-08

    申请人： Gunter Weber ,  Detmar Redeker ,  Bernd Klinksiek ,  Jürgen Hinderer ,  Benno Ulfik

    发明人： Gunter Weber ,  Detmar Redeker ,  Bernd Klinksiek ,  Jürgen Hinderer ,  Benno Ulfik

    IPC分类号： C08B1100

    CPC分类号： C08B11/20

    摘要： The invention relates to a new, particularly economic process for preparing pulverulent polysaccharide derivatives, in particular cellulose derivatives, having a thermal flocculation point; the process comprises soaking or dissolving the polysaccharide derivative in a solvent or mixed solvent, dividing/comminuting the soaked or dissolved polysaccharide derivative by thermal and/or mechanical liquid separation and an optional drying step.

    摘要翻译： 本发明涉及一种制备具有热絮凝点的粉状多糖衍生物，特别是纤维素衍生物的新的，特别经济的方法; 该方法包括将多糖衍生物浸泡或溶解在溶剂或混合溶剂中，通过热和/或机械液体分离和任选的干燥步骤分离/粉碎浸泡或溶解的多糖衍生物。

    Screw centrifuge with a washing device
    3.
    发明授权
    Screw centrifuge with a washing device 失效
    螺旋式离心机带洗涤装置

    公开(公告)号：US4496340A

    公开(公告)日：1985-01-29

    申请号：US486465

    申请日：1983-04-19

    申请人： Detmar Redeker ,  Dieter Mrotzek

    发明人： Detmar Redeker ,  Dieter Mrotzek

    IPC分类号： B04B1/20 ,  B04B15/12

    CPC分类号： B04B15/12 ,  B04B1/20

    摘要： The screw centrifuge has a cylindrical clarifying part and a conical desiccating part which is provided with axial supply pipes for a washing liquid and with openings for the passage of the washing liquid into the chamber between the drum and the screw core. A substantial improvement in the washing effect is achieved in that the openings are connected to a liquid distributor which is positioned along a cylindrical helix and which charges the washing liquid regularly along the screw flank over at least one turn in the vicinity of the screw core. The liquid distributor either comprises an overflow channel which is positioned in or directly upstream of the screw flank, or it is formed from a compact series of nozzles which are directed at the screw flank. It is an essential feature of this arrangement that the solids which are pushed up by the screw flanks are covered and saturated regularly with the washing liquid.

    摘要翻译： 螺旋离心机具有圆柱形澄清部分和圆锥形干燥部分，该部分设置有用于洗涤液体的轴向供应管道，并具有用于将洗涤液体通过滚筒和螺杆芯之间的室的开口。 实现了洗涤效果的显着改进，其中开口连接到沿着圆柱形螺旋线定位的液体分配器，并且在螺杆芯附近至少一圈处沿着螺纹面规则地将洗涤液充满洗涤液。 液体分配器还包括溢流通道，该溢流通道位于螺纹侧面中或直接位于螺纹侧面的上游，或者由紧紧的一系列喷嘴形成，该喷嘴指向螺纹侧面。 这种布置的基本特征是被螺纹侧面推起的固体被清洗液定期地覆盖和饱和。

    Cellulose ethers and method for producing the same
    5.
    发明授权
    Cellulose ethers and method for producing the same 有权
    纤维素醚及其制备方法

    公开(公告)号：US06482940B1

    公开(公告)日：2002-11-19

    申请号：US09446998

    申请日：1999-12-30

    申请人： Erik-Andreas Klohr ,  Jörg Neubauer ,  Wolfgang Koch ,  Klaus Szablikowski ,  Detmar Redeker ,  Wolfgang Wagenknecht ,  Fritz Loth

    发明人： Erik-Andreas Klohr ,  Jörg Neubauer ,  Wolfgang Koch ,  Klaus Szablikowski ,  Detmar Redeker ,  Wolfgang Wagenknecht ,  Fritz Loth

    IPC分类号： C08B1100

    CPC分类号： B01J31/08 ,  B01J2231/48 ,  B01J2531/985 ,  C08B11/04 ,  C08B11/193

    摘要： A cellulose ether that is predominantly substituted in the C3 position of the anhydroglucose unit of the cellulose is described. In an embodiment of the present invention, the partial degree of substitution in the C3 position of the cellulose ether is ≧60%, based on the total degree of substitution. Also described is a process for preparing the cellulose ether of the present invention. The process involves, reacting cellulose, dissolved in N-methylmorpholine-N-oxide monohydrate (NMMNO) and optionally other inert organic solvents, with alkylation reagents. The reaction takes place in the presence of: (i) an insoluble solid phase catalyst, e.g., solid ion exchange resins based on polystyrene having quaternary ammonium groups; (ii) stabilizers, e.g., propyl gallate; and (iii) optionally additional soluble co-catalysts, e.g., trimethylbenzylammonium hydroxide.

    摘要翻译： 描述了主要在纤维素的脱水葡萄糖单元的C3位置取代的纤维素醚。 在本发明的一个实施方案中，基于总取代度，纤维素醚的C3位置的部分取代度为> = 60％。 还描述了制备本发明的纤维素醚的方法。 该方法涉及将溶解在N-甲基吗啉-N-氧化物一水合物（NMMNO）和任选的其它惰性有机溶剂中的纤维素与烷基化试剂反应。 该反应在以下存在下进行：（i）不溶性固相催化剂，例如基于具有季铵基团的聚苯乙烯的固体离子交换树脂; （ii）稳定剂，例如没食子酸丙酯; 和（iii）任选的另外的可溶性助催化剂，例如氢氧化三甲基苄基铵。

    Finely divided polysaccharide derivatives
    6.
    发明授权
    Finely divided polysaccharide derivatives 有权
    细分多糖衍生物

    公开(公告)号：US06872820B2

    公开(公告)日：2005-03-29

    申请号：US09968497

    申请日：2001-10-01

    申请人： Gunter Weber ,  Detmar Redeker ,  Bernd Klinksiek ,  Jürgen Hinderer ,  Benno Ulfik

    发明人： Gunter Weber ,  Detmar Redeker ,  Bernd Klinksiek ,  Jürgen Hinderer ,  Benno Ulfik

    IPC分类号： B32B27/32 ,  B65D75/58 ,  C08B11/00 ,  C08B11/20

    CPC分类号： B65D75/5855 ,  B32B27/32 ,  B32B2553/00

    摘要： Finely divided polysacharide derivatives are described. The finely divided polysacharide derivatives are prepared by a process comprising: a) forming an aqueous composition comprising a polysaccharide derivative and water, in which the polysaccharide derivative is soaked or dissolved; b) converting the polysaccharide derivative of the aqueous composition into finely divided solid particles by, (i) contacting the aqueous composition with superheated water vapor in a dryer-pulverizer; or (ii) causing the polysaccharide derivative of the aqueous composition to flocculate; and c) optionally drying the finely divided solid particles of step b). The primary structures of the polysaccharide starting material are largely removed, and the product has a shape factor of less than 5 and greater than or equal to 1.

    摘要翻译： 描述了细分多糖的衍生物。 精细分散的多糖苷衍生物通过以下方法制备，该方法包括：a）形成包含多糖衍生物和水的水性组合物，其中多糖衍生物被浸泡或溶解; b）通过以下步骤将水性组合物的多糖衍生物转化成细分散的固体颗粒：（i）在干燥器 - 粉碎机中使含水组合物与过热水蒸汽接触; 或（ⅱ）引起含水组合物的多糖衍生物絮凝; 和c）任选地干燥步骤b）的细碎固体颗粒。 多糖原料的主要结构大部分被除去，产物的形状因子小于5且大于或等于1。

    Continuous cell dispersion, cultivation and substance recovery process
    7.
    发明授权
    Continuous cell dispersion, cultivation and substance recovery process 失效
    连续细胞分散，培养和物质回收过程

    公开(公告)号：US4921792A

    公开(公告)日：1990-05-01

    申请号：US126049

    申请日：1987-11-27

    申请人： Jurgen Trawinski ,  Detmar Redeker

    发明人： Jurgen Trawinski ,  Detmar Redeker

    IPC分类号： C12M3/00 ,  C12M1/12 ,  C12M3/06 ,  C12N5/00 ,  C12N5/02 ,  C12N5/06 ,  C12N5/10

    CPC分类号： C12M29/18 ,  C12M27/02 ,  C12M29/16 ,  Y10S435/803 ,  Y10S435/813

    摘要： A system for continuous production and removal of a biological substance from a dispersed cell culture. The system comprises a reactor adapted to maintain the cell culture under incubating conditions and means for pumping limited volumes of the culture fluid from the reactor and through an external substance separation device adapted to extract the substance in a limited time on a continuous basis without collection of, or damage to, the dispersed cells. Less than 5% of the total culture fluid volume is outside the reactor (Volume outside or Vo) at any time and a given dispersed cell is outside the protective environment of the reactor for less than about two minutes, as expressed by the following relationship, ##EQU1## In preferred embodiments the external device comprises a plurality of substance-extracting, porous, hollow fibers through which the culture fluid, substance, and dispersed cells are continuously passed. In other preferred embodiments, separate means for continuously dialyzing the culture fluid prior to its return to the reactor are provided.