Solvent process for recovering indigo dye from textile scrap
    85.
    发明授权
    Solvent process for recovering indigo dye from textile scrap 失效
    从纺织废料回收靛蓝染料的溶剂工艺

    公开(公告)号:US5989296A

    公开(公告)日:1999-11-23

    申请号:US17063

    申请日:1998-02-02

    摘要: A process for recovering a vat dye from a textile using a heated organic solvent. The textile is contacted with a heated organic solvent in which the dye is soluble until dye is extracted from the textile into the solvent to produce a dye-containing solvent solution. The dye is then recovered from the organic solvent by evaporation of the solvent leaving a dye residue, cooling and precipitation of the dye, or extraction of the dye by contacting the dye-containing solvent solution with an aqueous solution containing a reducing agent for the dye. When dye is extracted from the dye-containing solvent solution by contacting it with an aqueous solution containing a reducing agent, the dye is subsequently insolubilized by oxidation, and the dye is recovered from the aqueous dye solution. This process is particularly advantageous for recovering indigo dye from denim scrap.

    摘要翻译: 使用加热的有机溶剂从纺织品中回收含水染料的方法。 织物与加热的有机溶剂接触,其中染料可溶,直到染料从织物中提取到溶剂中以产生含染料的溶剂溶液。 然后通过蒸发溶剂蒸发染料残留物,染料冷却和沉淀,或通过使含染料的溶剂溶液与含有染料的还原剂的水溶液接触来提取染料,从有机溶剂中回收染料 。 当通过使其与含有还原剂的水溶液接触从含染料的溶剂溶液中提取染料时,染料随后通过氧化而不溶解,并且染料从染料溶液中回收。 该方法对于从牛仔布废料中回收靛蓝染料是特别有利的。

    Compositions and methods that introduce variations in color density into
cellulosic fabrics, particularly indigo dyed denim
    87.
    发明授权
    Compositions and methods that introduce variations in color density into cellulosic fabrics, particularly indigo dyed denim 失效
    将颜色密度变化引入纤维素织物,特别是靛蓝染色牛仔布的组合物和方法

    公开(公告)号:US5213581A

    公开(公告)日:1993-05-25

    申请号:US898845

    申请日:1992-06-15

    IPC分类号: C11D3/386 C11D11/00

    摘要: Aqueous processes and compositions of the invention for obtaining a "stone-washed", distressed or "used and abused" look in clothing, particularly in the panels and seams of denim jeans and jackets involve compositions that are stone-free that avoid mechanical abrasion of the fabric. In particular, the process and composition of the invention used to obtain the distressed, "stone-washed" or "acid washed look" are free of common pumice or pumice-bleach compositions, used in large institutional-size laundry machines, and rely solely on the chemical action of aqueous treatment compositions. The aqueous treatments can be made from liquid or solid concentrates.

    摘要翻译: 本发明的水性方法和组合物用于获得衣服中特别是牛仔布和夹克的面板和接缝中的“经过洗涤”,不适或被滥用的外观,包括无石头的组合物,其避免机械磨损 面料。 特别地,用于获得苦难的“石洗”或“酸洗的外观”的本发明的方法和组合物不含普通的浮石或浮石组合物,用于大型机构尺寸的洗衣机中,并且仅依赖于 关于水处理组合物的化学作用。 水处理可以由液体或固体浓缩物制成。

    PREPARATION METHOD OF POLYSACCHARIDE FIBER
    90.
    发明申请
    PREPARATION METHOD OF POLYSACCHARIDE FIBER 审中-公开
    多糖纤维的制备方法

    公开(公告)号:US20160032493A1

    公开(公告)日:2016-02-04

    申请号:US14707006

    申请日:2015-05-08

    发明人: Yu-Deng Lin

    IPC分类号: D01F2/02 D01F1/06 D01F9/00

    摘要: A preparation method of a polysaccharide fiber is provided. The method includes the following steps. First, a polysaccharide material is provided. Next, the polysaccharide material is mixed with an ionic liquid to form a polysaccharide solution. Then, the polysaccharide solution is mixed with a forming liquid to form a formed polysaccharide article. Next, a homogenization treatment is performed on the formed polysaccharide article to form a homogeneous polysaccharide article. Then, the homogeneous polysaccharide article is dried to form a polysaccharide fiber.

    摘要翻译: 提供了多糖纤维的制备方法。 该方法包括以下步骤。 首先,提供多糖材料。 接着,将多糖材料与离子液体混合,形成多糖溶液。 然后,将多糖溶液与形成液体混合,形成多糖制品。 接着,对所形成的多糖制品进行均质化处理,形成均质多糖制品。 然后,将均匀多糖制品干燥以形成多糖纤维。