Process for the production of hydrophilic acrylic fibers
    2.
    发明授权
    Process for the production of hydrophilic acrylic fibers 失效
    生产亲水丙烯酸纤维的方法

    公开(公告)号:US5028369A

    公开(公告)日:1991-07-02

    申请号:US409698

    申请日:1989-09-20

    CPC分类号: D01F8/08

    摘要: A process for the discontinuous or (preferably) continuous production of dry spun hydrophilic acrylic fibers and threads with a core/sheath structure which have improved color fastness properties, more uniform cross-sections and better processing characteristics. By employing a new after-treatment combination of more intensive counterflow washing, stretching in steam, fixing in steam and careful drying of the fibers as staple fibers, improved hydrophilic fibers with a water retention capacity above 30% can be obtained from spinning solutions which have a much lower non-solvent content than is necessary in the present-state of the art for obtaining a high water retention capacity of the order indicated above.

    摘要翻译: 用于不连续或(优选)连续生产具有改善的色牢度特性,更均匀的横截面和更好的加工特性的具有芯/鞘结构的干纺亲水丙烯酸纤维和线的方法。 通过采用更强烈的逆流洗涤,蒸汽拉伸,蒸汽固定和纤维仔细干燥作为短纤维的新的后处理组合的新的后处理组合,可以从具有30%以上的纺丝溶液获得具有30%以上的改善的亲水性纤维, 比现有技术中所需的低得多的非溶剂含量,以获得上述顺序的高保水能力。

    High molecular weight copolyamides containing quinazoline dione units
    6.
    发明授权
    High molecular weight copolyamides containing quinazoline dione units 失效
    含有喹唑啉二酮单元的高分子量共聚酰胺

    公开(公告)号:US3991015A

    公开(公告)日:1976-11-09

    申请号:US466842

    申请日:1974-05-03

    IPC分类号: C08G69/32 C08G69/26 C08G69/40

    CPC分类号: C08G69/32

    摘要: High molecular weight aromatic copolyamides which contain a small proportion of structural units having 2,3-(1H,3H)-quinazoline dione rings are disclosed. The presence of quinazolinedione ring units in the copolyamide results in an increased moisture absorption capacity. By using small amounts of quinazoline dione units, the good physical properties of the corresponding quinazoline dione-free polyamide are substantially retained while the moisture absorption is significantly increased. Larger amounts of quinazoline dione units than contemplated (15 mol percent and more) do not improve the moisture absorption further and adversely affect the physical properties. The copolyamides are useful in textile applications in which the improved moisture absorption serves to make clothing prepared from such textiles more comfortable.

    摘要翻译: 公开了含有少量具有2,3-(1H,3H) - 喹唑啉二酮环的结构单元的高分子量芳族共聚酰胺。 共聚酰胺中喹唑啉二酮环单元的存在导致增加的吸湿能力。 通过使用少量的喹唑啉二酮单元,相应的喹唑啉二酮类聚酰胺的良好的物理性质基本保持,同时吸湿显着增加。 比预期的更大量的喹唑啉二酮单元(15摩尔%以上)不会进一步改善吸湿性并且不利地影响物理性能。 共聚酰胺可用于纺织应用中,其中改善的吸湿性用于使由这种纺织品制备的衣物更舒适。

    Urethane derivatives of 2-phenyl-4(3H)-quinazolones
    8.
    发明授权
    Urethane derivatives of 2-phenyl-4(3H)-quinazolones 失效
    2-苯基-4(3H) - 喹唑啉酮的氨基甲酸酯衍生物

    公开(公告)号:US3932409A

    公开(公告)日:1976-01-13

    申请号:US477442

    申请日:1974-06-07

    IPC分类号: C07D239/91 C07D239/00

    CPC分类号: C07D239/91 Y10S514/906

    摘要: 2-Phenyl-4(3H)-quinazolones bearing a urethane or thiourethane group on the 2-phenyl substituent, a second urethane or thiourethane group on the benzo ring of the quinazolone nucleus and an alkyl, cycloalkyl or phenyl group in the 3-position are prepared by treating the corresponding bis-amino compound with an acid derivative or the corresponding bis(isocyanate) or bis(isothiocyanate) with an alcohol. The compounds, of which 2-[3'-(methoxycarbonylamino)-phenyl]-3-phenyl-6-methoxycarbonylamino-4-(3H)-quinazolone is a typical embodiment, are cytostatic agents.

    摘要翻译: 在2-苯基取代基上带有氨基甲酸酯或硫代氨基甲酸酯基的2-苯基-4(3H) - 喹唑啉酮,喹唑啉酮核的苯并环上的第二个氨基甲酸酯基或硫代氨基甲酸酯基和3-位的烷基,环烷基或苯基 通过用酸衍生物或相应的双(异氰酸酯)或双(异硫氰酸酯)与醇处理相应的双 - 氨基化合物来制备。 2- [3' - (甲氧基羰基氨基) - 苯基] -3-苯基-6-甲氧基羰基氨基-4-(3H) - 喹唑酮的化合物是典型的实施方案,是细胞生长抑制剂。