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    Process for the production of cellulosic fibres
    4.
    发明授权
    Process for the production of cellulosic fibres 失效
    生产纤维素纤维的方法

    公开(公告)号：US06645409B2

    公开(公告)日：2003-11-11

    申请号：US09814152

    申请日：2001-03-21

    申请人： Wilhelm Feilmair ,  Heinrich Firgo ,  Johann Männer

    发明人： Wilhelm Feilmair ,  Heinrich Firgo ,  Johann Männer

    IPC分类号： D01D506

    CPC分类号： D01D10/06 ,  D01F2/00

    摘要： The invention relates to a process for the production of cellulosic fibers from solutions of cellulose in an aqueous tertiary amine oxide whereby the extruded fibers are led through a precipitating bath and cut and the cut fibers are passed through a series of water baths in the form of a fleece and then dried, whereby the wash baths are connected to each other and fresh washing liquor is applied to the last wash bath and led in countercurrent with the transportation direction of the fibre fleece to the first wash bath. The process in accordance with the invention is characterised in that the pH value of each of these wash baths is maintained higher than 8.5.

    摘要翻译： 本发明涉及一种由纤维素在叔胺氧化胺水溶液中由纤维素溶液生产纤维素纤维的方法，由此挤出的纤维被引导通过沉淀浴并切割，切割的纤维通过一系列水浴形式 羊毛然后干燥，洗涤浴彼此连接，将新鲜的洗涤液施加到最后一个洗涤槽，并与纤维绒毛的运输方向逆向引导到第一洗涤槽。 根据本发明的方法的特征在于，这些洗涤浴中的每一个的pH值保持高于8.5。

    Process and arrangement for preparing a solution of cellulose
    8.
    发明授权
    Process and arrangement for preparing a solution of cellulose 失效
    制备纤维素溶液的方法和布置

    公开(公告)号：US5094690A

    公开(公告)日：1992-03-10

    申请号：US742093

    申请日：1991-08-02

    申请人： Stefan Zikeli ,  Bernd Wolschner ,  Dieter Eichinger ,  Raimund Jurkovic ,  Heinrich Firgo

    发明人： Stefan Zikeli ,  Bernd Wolschner ,  Dieter Eichinger ,  Raimund Jurkovic ,  Heinrich Firgo

    IPC分类号： B01F1/00 ,  C08B1/00 ,  C08J3/09 ,  D01F2/00

    CPC分类号： C08J3/096 ,  B01F1/0005 ,  B01F1/0011 ,  B01F1/0022 ,  C08B1/003 ,  C08J3/091 ,  D01F2/00 ,  C08J2301/02

    摘要： There is disclosed a process for preparing solutions of cellulose in aqueous tertiary amine oxides from a suspension of cellulose in an aqueous solution of the tertiary amine oxide by supplying heat at a reduced pressure. The suspension is transported over a heating surface, spread in layers or coats, until a homogenous solution of the cellulose has formed, which has a viscosity of between 50 and 15,000 Pas.s. Feeding of the suspension and drawing-off of the homogenous solution are carried out continuously. The solutions are prepared in an indirectly heated evacuatable vessel provided with a stirring device. The vessel is designed as a cylindrical container including a centrically mounted stirring shaft having agitators joined thereto, the radial distance of the agitators from the internal wall of the container being 20 mm at the most. There are provided an intake for the cellulose suspension in the upper part of the container and an outlet for the homogenous collulose solution in its lower end.

    摘要翻译： 公开了一种通过在减压下供应热量来从纤维素悬浮液中制备纤维素在叔胺氧化物的水溶液中的水溶液的叔胺氧化物溶液的方法。 悬浮液在加热表面上运输，分层或涂层，直到形成均匀的纤维素溶液，其粘度为50至15,000Pa.s. 连续进行悬浮液的供给和均匀溶液的抽出。 溶液在配有搅拌装置的间接加热的可抽空容器中制备。 容器设计为圆柱形容器，其包括具有与其连接的搅拌器的中心安装的搅拌轴，搅拌器与容器的内壁的径向距离最大为20mm。 在容器的上部提供纤维素悬浮液的入口和其下端的均匀的纤维素溶液的出口。

    Process and arrangement for preparing a solution of cellulose
    10.
    发明授权
    Process and arrangement for preparing a solution of cellulose 失效
    制备纤维素溶液的方法和布置

    公开(公告)号：US5330567A

    公开(公告)日：1994-07-19

    申请号：US998774

    申请日：1992-10-28

    申请人： Stefan Zikeli ,  Bernd Wolschner ,  Dieter Eichinger ,  Raimund Jurkovic ,  Heinrich Firgo

    发明人： Stefan Zikeli ,  Bernd Wolschner ,  Dieter Eichinger ,  Raimund Jurkovic ,  Heinrich Firgo

    IPC分类号： B01F1/00 ,  C08B1/00 ,  C08J3/09 ,  D01F2/00 ,  C09D101/02

    CPC分类号： C08J3/096 ,  B01F1/0005 ,  B01F1/0011 ,  B01F1/0022 ,  C08B1/003 ,  C08J3/091 ,  D01F2/00 ,  C08J2301/02

    摘要： There is disclosed a process for preparing solutions of cellulose in aqueous tertiary amine oxides from a suspension of cellulose in an aqueous solution of the tertiary amine oxide by supplying heat at a reduced pressure. The suspension is transported over a heating surface, spread in layers or coats, until a homogenous solution of the cellulose has formed, which has a viscosity of between 50 and 15,000 Pas.s. Feeding of the suspension and drawing-off of the homogenous solution are carried out continuously. The solutions are prepared in an indirectly heated evacuatable vessel provided with a stirring device. The vessel is designed as a cylindrical container including a centrically mounted stirring shaft having agitators joined thereto, the radial distance of the agitators from the internal wall of the container being 20 mm at the most. There are provided an intake for the cellulose suspension in the upper part of the container and an outlet for the homogenous cellulose solution in its lower end.

    摘要翻译： 公开了一种通过在减压下供应热量来从纤维素悬浮液中制备纤维素在叔胺氧化物的水溶液中的水溶液的叔胺氧化物溶液的方法。 悬浮液在加热表面上运输，分层或涂层，直到形成均匀的纤维素溶液，其粘度为50至15,000Pa.s. 连续进行悬浮液的供给和均匀溶液的抽出。 溶液在配有搅拌装置的间接加热的可抽空容器中制备。 容器设计为圆柱形容器，其包括具有与其连接的搅拌器的中心安装的搅拌轴，搅拌器与容器的内壁的径向距离最大为20mm。 在容器的上部提供纤维素悬浮液的入口和其下端的均匀纤维素溶液的出口。