Preparation of aqueous polyester dispersions and use thereof
    1.
    发明授权
    Preparation of aqueous polyester dispersions and use thereof 失效
    水性聚酯分散体的制备及其用途

    公开(公告)号:US4943602A

    公开(公告)日:1990-07-24

    申请号:US320963

    申请日:1989-03-09

    CPC分类号: D06M15/507 C08G63/20

    摘要: Aqueous polyester dispersions are prepared by(a) condensing an aromatic dicarboxylic acid or ester with at least one diol to give a prepolymer having an acid number of from 2 to 8,(b) reacting the prepolymer with at least one molecular weight enhancer compound, e.g. trimellitic anhydride to give a polyester having an acid number of from 40 to 60, and(c) dispersing the polyester in an aqueous medium to form an aqueous dispersion by adding an aqueous mixture of ammonia and an amine in a molar ratio of from 10:1 to 1:10 to a melt of the polyester which has a temperature within the range from 150.degree. to 230.degree. C.,and are used as sizes for sizing filament warp yarns.

    摘要翻译: 通过(a)将芳族二羧酸或酯与至少一种二醇缩合得到酸值为2至8的预聚物,(b)使预聚物与至少一种分子量增强剂化合物反应制备水性聚酯分散体, 例如 偏苯三酸酐,得到酸值为40至60的聚酯,和(c)将聚酯分散在水性介质中以通过加入摩尔比为10:1的氨和胺的水性混合物形成水分散体, 对于温度在150℃至230℃的聚酯的熔体,1至1:10,并且用作用于使长丝经纱上浆的尺寸。

    Recovery of sizes
    3.
    发明授权
    Recovery of sizes 失效
    恢复尺寸

    公开(公告)号:US4095947A

    公开(公告)日:1978-06-20

    申请号:US722519

    申请日:1976-09-13

    CPC分类号: D06B3/00

    摘要: Fabrics of which the warp is sized with water-soluble polymers of acrylic acid and/or their alkali metal salts or ammonium salts, are desized by treating the sized fabric with from 30 to 300 percent by weight of water, based on the dry weight of the fabric, and separating the resulting size solution from the fabric. The recovered size solution can be directly re-used for sizing.

    摘要翻译: 通过用水溶性丙烯酸和/或其碱金属盐或铵盐的聚合物将经纱尺寸的织物通过用30至300重量%的水处理尺寸的织物而降低,基于干燥重量 织物,并将所得尺寸溶液与织物分离。 恢复的尺寸溶液可以直接重新用于施胶。