Process for preparing cellulose fibers
    1.
    发明授权
    Process for preparing cellulose fibers 有权
    制备纤维素纤维的方法

    公开(公告)号:US06156253A

    公开(公告)日:2000-12-05

    申请号:US319697

    申请日:1999-06-25

    IPC分类号: D01F2/02

    CPC分类号: D01F2/02

    摘要: A process for preparing fibers from an optically anisotropic solution containing either one of cellulose or cellulose derivatives by extruding the solution through a non-corroding spinneret and coagulating the resulting extrudates in a coagulant, the coagulant being a liquid which contains mostly water and to which cations have been added.

    摘要翻译: PCT No.PCT / EP97 / 06955 371日期1999年6月25日第 102(e)1999年6月25日PCT 1997年12月3日PCT PCT。 公开号WO98 / 30741 PCT 日期1998年7月16日一种由含有纤维素或纤维素衍生物的光学各向异性溶液制备纤维的方法,该方法是通过非腐蚀喷丝头挤出溶液并将所得挤出物凝结在凝结剂中,凝结剂是主要含有的液体 水,并加入了阳离子。

    Cellulose fibres and filaments having a high elongation at break
    2.
    发明授权
    Cellulose fibres and filaments having a high elongation at break 失效
    具有高断裂伸长率的纤维素纤维和长丝

    公开(公告)号:US6068919A

    公开(公告)日:2000-05-30

    申请号:US125351

    申请日:1998-08-25

    IPC分类号: D01F2/02 D01F11/02 D21B1/00

    摘要: Cellulose fibres and filaments are prepared from a spinnable, cellulose-containing solution containing 94-100 wt. % cellulose, water, and phosphoric acid and/or anhydrides of phosphoric acid. The resulting cellulose fibres and filaments have an elongation break point greater than 7%. The cellulose-containing solution used to prepare the fibres and filaments may be either isotropic or anisotropic. The cellulose-containing solution is coagulated in a liquid containing water and cations, and the cations are preferably monovalent. Fibres and filaments prepared in this manner are especially suitable for use in textiles.

    摘要翻译: PCT No.PCT / EP97 / 00693 Sec。 371日期:1998年8月25日 102(e)日期1998年8月25日PCT提交1997年2月13日PCT公布。 公开号WO97 / 30198 PCT 日期1997年8月21日纤维素纤维和长丝由可旋转的含纤维素的溶液制备,该溶液含有94-100wt。 %的纤维素,水和磷酸和/或磷酸的酸酐。 得到的纤维素纤维和长丝的伸长断裂点大于7%。 用于制备纤维和长丝的含纤维素溶液可以是各向同性的或各向异性的。 含有纤维素的溶液在含有水和阳离子的液体中凝结,阳离子优选为一价。 以这种方式制备的纤维和长丝尤其适用于纺织品。

    Method for the preparation of a material with high water and salt
solutions absorbency
    3.
    发明授权
    Method for the preparation of a material with high water and salt solutions absorbency 失效
    制备具有高水和盐溶液吸收性的材料的方法

    公开(公告)号:US6027536A

    公开(公告)日:2000-02-22

    申请号:US117876

    申请日:1998-08-06

    CPC分类号: D01F2/02 C08B1/003 C08B5/00

    摘要: A process for preparing a material having a high water and salt solutions absorbency, the material containing mainly cellulose that is dissolved in a solvent containing phosphoric acid, a solution is obtained that contains 94-100 wt. % of the following constituents:cellulose,phosphoric acid and/or its anhydrides, andwater,the solution is then coagulated and washed in a liquid containing less than 50 wt. % of water. This process can be used to obtain cellulose products, such as fibers or pulp, which have a high water and (isotonic) salt solutions absorbency.

    摘要翻译: PCT No.PCT / EP97 / 00652 Sec。 371日期1998年8月6日 102(e)1998年8月6日PCT PCT 1997年2月12日提交PCT公布。 公开号WO97 / 30090 日期1997年8月21日一种制备具有高水溶性和盐溶液吸收性的材料的方法,该材料主要含有溶解在含有磷酸的溶剂中的纤维素,得到含有94-100wt。 以下组分的%:纤维素,磷酸和/或其酸酐和水,然后将溶液凝结并在含有小于50wt。 %的水。 该方法可用于获得具有高水和(等渗)盐溶液吸收性的纤维素产品,例如纤维或纸浆。

    Process for preparing a spinnable, isotropic cellulose solution
    4.
    发明授权
    Process for preparing a spinnable, isotropic cellulose solution 失效
    制备可纺,各向同性纤维素溶液的方法

    公开(公告)号:US6140497A

    公开(公告)日:2000-10-31

    申请号:US117351

    申请日:1998-08-06

    CPC分类号: D01F2/24 C08B1/003 D01F2/02

    摘要: A spinnable, isotropic solution containing cellulose, phosphoric acid and/or anhydrides of phosphoric acid and water is prepared by dissolving cellulose in a solvent, the solvent being a homogeneous mixture of water and at least one of phosphoric acid and anhydrides of phosphoric acid such that the solvent contains 72-85 wt. % of phosphorous pentoxide, P.sub.2 O.sub.5. The cellulose is mixed with the solvent in a mixing apparatus, the mixing apparatus having mixers, kneaders or the like, and capable of generating high shearing forces. The solution is converted from anisotropic phase to isotropic phase by the addition of water. The water required to convert the solution to the isotropic phase is added either just prior to, during or after the mixing step. The solvent preferably contains 72-80 wt. % P.sub.2 O.sub.5 and 7-20 wt. % of cellulose, and is used to make hollow fibers, membranes, non-woven films, and other articles requiring the use of cellulose-containing solutions.

    摘要翻译: PCT No.PCT / EP97 / 00460 Sec。 371日期1998年8月6日 102(e)1998年8月6日PCT PCT 1997年1月31日PCT公布。 公开号WO97 / 28298 PCT 日期1997年8月7日通过将纤维素溶解在溶剂中制备含有磷酸和水的纤维素,磷酸和/或酸酐的可旋转的各向同性溶液,所述溶剂是水与磷酸和酸酐中的至少一种的均匀混合物 的磷酸,使得溶剂含有72-85wt。 五氧化二磷,P2O5%。 在混合装置中将纤维素与溶剂混合,混合装置具有混合器,捏合机等,并能产生高剪切力。 通过加入水将溶液从各向异性相转变成各向同性相。 将溶液转化为各向同性相所需的水在混合步骤之前,期间或之后加入。 溶剂优选含有72-80wt。 %P2O5和7-20wt。 %的纤维素,并且用于制备中空纤维,膜,非织造膜和需要使用含纤维素的溶液的其它制品。

    Fibers and yarns from a blend of aromatic polyamides
    8.
    发明授权
    Fibers and yarns from a blend of aromatic polyamides 失效
    来自芳族聚酰胺混合物的纤维和纱线

    公开(公告)号:US4721755A

    公开(公告)日:1988-01-26

    申请号:US899082

    申请日:1986-08-22

    申请人: Hendrik Maatman

    发明人: Hendrik Maatman

    摘要: Fibers substantially consisting of a blend of aromatic polyamides comprising poly-p-phenylene terephthalamide and up to 50 wt. % of a second polyamide of related structure containing diaminobenzanilide units.The second polyamide should provide at least 0,1 wt. % of diaminobenzanilide units in the blend and is derived from aromatic monomers selected from the group comprising terephthalic acid, 4,4'-diamino benzanilide, p-phenylene diamine and p-amino benzoic acid. The fibers possess an elastic behavior particularly useful for tire yarn purposes.

    摘要翻译: 纤维基本上由包含聚对苯二甲酰对苯二胺的芳族聚酰胺和至多50重量% %的含有二氨基苯甲酰苯胺单元的相关结构的第二聚酰胺。 第二聚酰胺应提供至少0.1wt。 衍生自选自对苯二甲酸,4,4'-二氨基苯甲酰苯胺,对苯二胺和对氨基苯甲酸的芳族单体的二氨基苯甲酰苯胺单元的%。 纤维具有特别用于轮胎纱线目的的弹性特性。

    Variable-aperture process for the manufacture of filaments from aromatic
polyamides
    9.
    发明授权
    Variable-aperture process for the manufacture of filaments from aromatic polyamides 失效
    用于从芳族聚酰胺制造长丝的可变孔径法

    公开(公告)号:US4702876A

    公开(公告)日:1987-10-27

    申请号:US754364

    申请日:1985-07-11

    IPC分类号: D01D4/02 D01D5/06 D01F6/60

    CPC分类号: D01D5/06 D01D4/02 D01F6/605

    摘要: Fibers are air-gap spun from a polymeric spinning mass comprising an aromatic polyamide (such as poly-p-phenyleneterephthalamide) by extrusion through a spinneret, passing through an air-gap, passage through a liquid (such as water), and exiting the liquid via an aperture which is variable in size. The use of such an aperture allows easier use of the equipment (especially the stringing up operation) and better fibre properties (such as tensile strength).

    摘要翻译: 纤维由包含芳族聚酰胺(例如聚对苯二甲酰对苯二胺)的聚合物纺丝组合物通过喷丝头挤出,穿过气隙,通过液体(如水)并离开 液体通过可变尺寸的孔。 使用这种孔可以更容易地使用设备(特别是拉丝操作)和更好的纤维性能(如拉伸强度)。