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    Process for producing particulate, water-soluble cellulose derivatives using a superheated gas mixture containing steam
    1.
    发明授权
    Process for producing particulate, water-soluble cellulose derivatives using a superheated gas mixture containing steam 有权
    使用含有蒸汽的过热气体混合物生产微粒状水溶性纤维素衍生物的方法

    公开(公告)号：US07259257B2

    公开(公告)日：2007-08-21

    申请号：US09785905

    申请日：2001-02-16

    申请人： Hartwig Schlesiger ,  Martin Morning ,  Gunter Weber ,  Volker Eckhardt ,  Gerd Sonnenberg ,  René Kiesewetter

    发明人： Hartwig Schlesiger ,  Martin Morning ,  Gunter Weber ,  Volker Eckhardt ,  Gerd Sonnenberg ,  René Kiesewetter

    IPC分类号： C08B11/20

    CPC分类号： C08J3/12 ,  C08B11/20 ,  C08J2301/08

    摘要： The present invention relates to a new, particularly economical process for preparing particulate water-soluble cellulose derivatives. The process involves forming a feed composition of swollen and/or dissolved cellulose derivative, and water. The feed composition is contacted with a superheated gas mixture, in a sieve-free high rotational speed gas jet impact mill, and the cellulose derivative of the feed composition is converted into a solid state form of finely particulate particles. The superheated gas mixture, with which the feed composition is contacted, is selected from: (i) a superheated gaseous mixture of steam and an inert gas; and (ii) a superheated gas mixture of steam and air. The superheated gas mixture has a steam content of 40 wt. % to 99 wt. %, based on the total weight of the superheated gas mixture.

    摘要翻译： 本发明涉及一种制备颗粒状水溶性纤维素衍生物的新的，特别经济的方法。 该方法包括形成溶胀和/或溶解的纤维素衍生物和水的进料组合物。 在无筛的高转速气体冲击式研磨机中使进料组合物与过热气体混合物接触，并将进料组合物的纤维素衍生物转化为固态形式的细颗粒颗粒。 进料组合物与其接触的过热气体混合物选自：（i）蒸汽和惰性气体的过热气态混合物; 和（ii）蒸汽和空气的过热气体混合物。 过热气体混合物的蒸汽含量为40wt。 ％至99重量％ ％，基于过热气体混合物的总重量。

    Process for producing particulate, water-soluble cellulose derivatives
    3.
    发明授权
    Process for producing particulate, water-soluble cellulose derivatives 有权
    生产微粒水溶性纤维素衍生物的方法

    公开(公告)号：US06509461B2

    公开(公告)日：2003-01-21

    申请号：US09788116

    申请日：2001-02-16

    申请人： Hartwig Schlesiger ,  Martin Morning ,  Gunter Weber ,  René Kiesewetter ,  Rudolf Lelgemann

    发明人： Hartwig Schlesiger ,  Martin Morning ,  Gunter Weber ,  René Kiesewetter ,  Rudolf Lelgemann

    IPC分类号： C08B1100

    CPC分类号： C08J3/12 ,  C08B11/20 ,  C08J2301/08 ,  C08L1/00

    摘要： The present invention relates to a new, particularly economical process for producing particulate water-soluble cellulose derivatives. The process involves forming a feed composition of swollen and/or dissolved cellulose derivative, and water. The feed composition is contacted with a carrier and heat exchange gas, in a sieve-free high rotational speed gas jet impact mill, and the cellulose derivative of the feed composition is converted into a solid state form of finely particulate particles. The particulate cellulose derivative is then separated from the heat exchange gas and carrier gas, and optionally dried. The mill drying and the particulate cellulose derivative product are influenced by establishing a specific water content in the swollen and/or dissolved cellulose derivative.

    摘要翻译： 本发明涉及用于生产颗粒状水溶性纤维素衍生物的新的，特别经济的方法。 该方法包括形成溶胀和/或溶解的纤维素衍生物和水的进料组合物。 在无筛的高转速气体冲击式研磨机中，将进料组合物与载体和热交换气体接触，并将进料组合物的纤维素衍生物转化成固态形式的细颗粒。 然后将颗粒状纤维素衍生物与热交换气体和载气分离，并任选地干燥。 研磨干燥和颗粒状纤维素衍生物产物受到溶胀和/或溶解的纤维素衍生物中特定含水量的影响。

    Process and apparatus for combined milling and drying
    4.
    发明授权
    Process and apparatus for combined milling and drying 有权
    联合研磨和干燥的方法和设备

    公开(公告)号：US06880772B2

    公开(公告)日：2005-04-19

    申请号：US10277514

    申请日：2002-10-22

    申请人： Hartwig Schlesiger ,  Martin Morning ,  Gerd Sonnenberg ,  Rudolf Heidemann

    发明人： Hartwig Schlesiger ,  Martin Morning ,  Gerd Sonnenberg ,  Rudolf Heidemann

    IPC分类号： B02C21/00 ,  B02C23/10 ,  B02C23/28 ,  B02C23/34 ,  C08B1/00 ,  C08B11/20 ,  F26B1/00 ,  F26B21/00 ,  F26B21/04 ,  F26B25/00 ,  B02C11/08

    CPC分类号： B02C23/34 ,  C08B11/20 ,  F26B1/005 ,  F26B21/002 ,  F26B21/04 ,  F26B25/007

    摘要： A process of both milling and drying a solvent-moist material (e.g., water-moist methylhydroxyethylcellulose) is described. The process includes, (a) providing a mill-dryer (100) which includes, in series, a heat exchanger (1), a mill (2) and a particulate separating apparatus (105) connected by conduits (8), (9) and (11, 12), which together define a mill-dryer circuit (103). The mill-dryer (100) also includes a bypass conduit (14), which provides optionally at least partial gaseous bypass of the heat exchanger (1). The process further includes: (b) introducing the solvent-moist material into the mill (2); (c) circulating a vapor stream (e.g., a steam/air stream) throughout the mill-dryer circuit (103); (d) heating the vapor stream by means of passage through the heat-exchanger (1); (e) forwarding milled particulate material from the mill (2) to the particulate separating apparatus (105) by means of conduit (9); (f) separating the particulate material from the vapor stream in the particulate separating apparatus (105); (g) forwarding the vapor stream from the particulate separating apparatus (105) through conduits (11, 12); and (h) controlling the temperature of the vapor stream by optionally forwarding at least some of the vapor stream through the bypass line (14).

    摘要翻译： 描述了研磨和干燥溶剂 - 湿物质（例如水 - 湿甲基羟乙基纤维素）的方法。 该方法包括：（a）提供一个包括串联的热交换器（1），研磨机（2）和通过导管（8），（9）连接的颗粒分离装置 ）和（11,12），它们共同限定了一个烘干机电路（103）。 研磨机（100）还包括旁通管道（14），其可选地提供热交换器（1）的至少部分气体旁路。 该方法还包括：（b）将溶剂湿物质引入磨机（2）中; （c）在蒸干机回路（103）中循环蒸气流（例如蒸汽/空气流）; （d）通过通过热交换器（1）的蒸气流加热; （e）通过导管（9）将磨碎的颗粒材料从研磨机（2）转送到颗粒分离装置（105）; （f）在颗粒分离装置（105）中分离颗粒材料与蒸汽流的分离; （g）通过导管（11,12）将来自颗粒分离装置（105）的蒸汽流送出; 和（h）通过任选地将至少一些蒸气流转运通过旁路管线（14）来控制蒸气流的温度。

    Water-dispersible polysaccharide derivatives of reduced glyoxal content, and a process for decreasing the glyoxal content in glyoxal-crosslinked polysaccharide derivatives
    9.
    发明授权
    Water-dispersible polysaccharide derivatives of reduced glyoxal content, and a process for decreasing the glyoxal content in glyoxal-crosslinked polysaccharide derivatives 有权
    降低乙二醛含量的水分散性多糖衍生物和降低乙二醛交联多糖衍生物中乙二醛含量的方法

    公开(公告)号：US08138331B2

    公开(公告)日：2012-03-20

    申请号：US11591654

    申请日：2006-11-01

    申请人： Meinolf Brackhagen ,  Hartwig Schlesiger

    发明人： Meinolf Brackhagen ,  Hartwig Schlesiger

    IPC分类号： C07H1/00

    CPC分类号： C08B11/20 ,  C08B15/005

    摘要： A description is given of glyoxal-treated polysaccharide derivatives which, to decrease the unbound glyoxal, are treated with an aqueous solution of one or more water-soluble aluminium salts, or one or more water-soluble borates, or a combination of one or more water-soluble aluminium salts and one or more water-soluble borates, and, if appropriate, with suitable buffer substances to set the pH, and then dried.A description is likewise given of a process for decreasing the content of unbound glyoxal in glyoxal-treated polysaccharide derivatives.

    摘要翻译： 对乙二醛处理的多糖衍生物进行了描述，为了减少未结合的乙二醛，用一种或多种水溶性铝盐或一种或多种水溶性硼酸盐的水溶液或一种或多种 水溶性铝盐和一种或多种水溶性硼酸盐，并且如果合适，用合适的缓冲物质来调节pH值，然后干燥。 同样给出了降低乙二醛处理的多糖衍生物中未结合乙二醛的含量的方法。