CELLULOSE POWDER AND PROCESSES FOR ITS PRODUCTION
    3.
    发明申请
    CELLULOSE POWDER AND PROCESSES FOR ITS PRODUCTION 有权
    纤维素粉及其生产工艺

    公开(公告)号:US20110009259A1

    公开(公告)日:2011-01-13

    申请号:US12679212

    申请日:2008-09-12

    IPC分类号: B01J20/26 C08B1/00 B01J20/22

    摘要: The invention relates to a process for producing spherical, non-fibrillar cellulose particles with a particle size in the range of from about 1 μm to about 400 μm from a solution of cellulose in which the solution is cooled down to below its solidification temperature wherein it is flowing freely, the solvent is washed out, the solidified cellulose solution is disintegrated to form cellulose powder comprising particles, and the disintegrated and washed out particles are dried. The invention also relates to the cellulose powder and particles made in accordance with the process of the invention.

    摘要翻译: 本发明涉及一种从其中将溶液冷却至低于其固化温度的纤维素溶液制备粒度在约1μm至约400μm范围内的球形非纤维状纤维素颗粒的方法,其中 自由流动,溶剂被洗出,固化的纤维素溶液被分解形成包含颗粒的纤维素粉末,并将分解和洗涤的颗粒干燥。 本发明还涉及根据本发明方法制备的纤维素粉末和颗粒。

    Hydroentangled Product Comprising Cellulose Fibers
    5.
    发明申请
    Hydroentangled Product Comprising Cellulose Fibers 有权
    包含纤维素纤维的水解产品

    公开(公告)号:US20090186189A1

    公开(公告)日:2009-07-23

    申请号:US12298079

    申请日:2007-04-26

    摘要: The present invention relates to a process for the production of a hydroentangled product comprising cellulose fibers, which includes the steps of (a) extruding a solution comprising cellulose dissolved in an aqueous tertiary amine-oxide through a spinneret into an air gap, thereby forming filaments (b) drawing said filaments by means of a gaseous stream (c) collecting and precipitating said filaments in order to form a web (d) bonding said web by means of a hydroentanglement process (e) contacting said filaments in the air gap with a medium which at least partially coagulates the filaments. Furthermore, the invention relates to products obtainable by said products, and uses thereof.

    摘要翻译: 本发明涉及一种生产包含纤维素纤维的水解产物的方法,其包括以下步骤:(a)通过喷丝头将溶解在叔胺氧化物水溶液中的溶液挤出到气隙中,从而形成丝 (b)通过收集和沉淀所述细丝的气流(c)拉伸所述长丝,以便形成通过水刺方法(e)将所述纤维网与空气间隙中的所述长丝接触的纤维网(d) 至少部分地使细丝凝结的介质。 此外,本发明涉及由所述产品可获得的产品及其用途。

    Process for providing a high-temperature resistant polyimide film
    6.
    发明授权
    Process for providing a high-temperature resistant polyimide film 失效
    提供耐高温聚酰亚胺膜的方法

    公开(公告)号:US4871500A

    公开(公告)日:1989-10-03

    申请号:US204680

    申请日:1988-06-09

    IPC分类号: C08J5/18 B29D7/01

    CPC分类号: B29D7/01 Y10T428/31721

    摘要: In a process of producing a high-temperature resistant film or a polyimide polymer, a solution of the polymer in an organic solvent is caused to flow out through a slots spinneret of a film forming arrangement and to coagulate in an aqueous precipitation bath containing the organic solvent. The film made up of coagulated liquid is stripped, the organic solvent is removed and the film is dried. In order to attain sufficient strength properties without subsequent orientation and, thus, achieve a better dimensional stability at elevated temperatures, the liquid film formed in the slot spinneret is allowed to fall directly freely into the aqueous precipitation bath through a short air gap. The film formed is drawn off the precipitation bath and is subjected to a subsequent thermal treatment to achieve a transparent homogeneous film. The organic solvent is then removed by treatment with an aqueous extraction agent, and the film is finally dried.

    摘要翻译: 在制造耐高温膜或聚酰亚胺聚合物的过程中,使聚合物在有机溶剂中的溶液通过成膜装置的喷丝板流出并在含有有机溶剂的含水沉淀浴中凝结 溶剂。 剥离由凝固液体构成的膜,除去有机溶剂,使膜干燥。 为了获得足够的强度性能而无需随后的取向,因此在升高的温度下获得更好的尺寸稳定性,允许在喷丝板中形成的液膜通过短的气隙直接自由地落入含水沉淀槽中。 所形成的膜从沉淀浴中排出,然后进行后续的热处理以获得透明的均匀的膜。 然后通过用水性萃取剂处理除去有机溶剂,最后将膜干燥。

    Heated rotatable roll arrangement
    7.
    发明授权
    Heated rotatable roll arrangement 失效
    加热旋转辊布置

    公开(公告)号:US4629867A

    公开(公告)日:1986-12-16

    申请号:US715398

    申请日:1985-03-25

    摘要: There is disclosed a heated roll for the thermal treatment of formed products. It includes a driven hollow shaft and a hollow roll body of a circular-ring-shaped cross section and closed on all sides to accommodate a heat transfer medium. Power supply lines for heating elements as well as electric wires of temperature probes are led through the hollow shaft. In order to provide a heated roll to be used without problems both in the low-temperature range and in the high-temperature range up to about 600.degree. C. and to reach a uniform temperature profile over the total operation surface of the roll outer shell and a long service life of the heat transfer medium, without excessive temperature prevailing at the bearings of the driving shaft, and to provide for an easy repair, the hollow shaft is connected with the roll body by a hub. One or several saline compound(s) or (a) low-melting metal(s) or metal alloy(s) are contained in the interior of the hollow roll body. The heating elements are provided in the cylindrical inner part of the roll body. The temperature probes are arranged both in the cylindrical inner part and in the cylindrical outer shell, of the roll body.

    摘要翻译: 公开了用于热处理成形产品的加热辊。 它包括从动空心轴和圆环形横截面的中空辊体,并且在所有侧面上封闭以容纳传热介质。 用于加热元件的电源线以及温度探针的电线被引导通过空心轴。 为了在低温范围和高达约600℃的高温范围内提供无需使用的加热辊,并且在辊外壳的总操作表面上达到均匀的温度分布 并且传热介质的使用寿命长,驱动轴的轴承没有过高的温度,并且为了便于维修,空心轴通过轮毂与辊体连接。 在中空辊体的内部包含一种或几种盐水化合物或(a)低熔点金属或金属合金。 加热元件设置在辊体的圆筒形内部。 温度传感器布置在辊体的圆柱形内部和圆柱形外壳中。

    Cellulose powder and processes for its production
    9.
    发明授权
    Cellulose powder and processes for its production 有权
    纤维素粉末及其生产工艺

    公开(公告)号:US09163095B2

    公开(公告)日:2015-10-20

    申请号:US12679212

    申请日:2008-09-12

    摘要: The invention relates to a process for producing spherical, non-fibrillar cellulose particles with a particle size in the range of from about 1 μm to about 400 μm from a solution of cellulose in which the solution is cooled down to below its solidification temperature wherein it is flowing freely, the solvent is washed out, the solidified cellulose solution is disintegrated to form cellulose powder comprising particles, and the disintegrated and washed out particles are dried. The invention also relates to the cellulose powder and particles made in accordance with the process of the invention.

    摘要翻译: 本发明涉及一种从其中将溶液冷却至低于其固化温度的纤维素溶液制备粒度在约1μm至约400μm范围内的球形非纤维状纤维素颗粒的方法,其中 自由流动,溶剂被洗出,固化的纤维素溶液被分解形成包含颗粒的纤维素粉末,并将分解和洗涤的颗粒干燥。 本发明还涉及根据本发明方法制备的纤维素粉末和颗粒。

    Process of making a hydroentangled product from cellulose fibers
    10.
    发明授权
    Process of making a hydroentangled product from cellulose fibers 有权
    从纤维素纤维制备水解产物的方法

    公开(公告)号:US08282877B2

    公开(公告)日:2012-10-09

    申请号:US12298079

    申请日:2007-04-26

    摘要: The present invention relates to a process for the production of a hydroentangled product comprising cellulose fibers, which includes the steps of (a) extruding a solution comprising cellulose dissolved in an aqueous tertiary amine-oxide through a spinneret into an air gap, thereby forming filaments (b) drawing said filaments by means of a gaseous stream (c) collecting and precipitating said filaments in order to form a web (d) bonding said web by means of a hydroentanglement process (e) contacting said filaments in the air gap with a medium which at least partially coagulates the filaments. Furthermore, the invention relates to products obtainable by said products, and uses thereof.

    摘要翻译: 本发明涉及一种生产包含纤维素纤维的水解产物的方法,其包括以下步骤:(a)通过喷丝头将溶解在叔胺氧化物水溶液中的溶液挤出到气隙中,从而形成丝 (b)通过收集和沉淀所述细丝的气流(c)拉伸所述长丝,以便形成通过水刺方法(e)将所述纤维网与空气间隙中的所述长丝接触的纤维网(d) 至少部分地使长丝凝结的介质。 此外,本发明涉及由所述产品可获得的产品及其用途。