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    • 96. 发明授权
    • Non-woven fabrics
    • 无纺布
    • US3887417A
    • 1975-06-03
    • US19520371
    • 1971-11-03
    • ICI LTD
    • DAVIES BARRIE LINTON
    • D04H3/14D04H3/16D04H3/08
    • D04H3/14D04H3/16Y10T428/24083Y10T442/69
    • A process for making a melded fabric comprising forming a web of randomly arranged continuous filaments wherein the continuous filaments can increase in length by at least 3%, subjecting the web to a treatment to effect said increase in length of the said filaments whilst restraining the web from change in length or width so as to produce a filament configuration within the web wherein at least 10% of the filaments lie at an angle of between 45* and 90* to the plane of the web at the mid-plane of the web, and subsequently bonding the web so that the ratio of the number of bonds to the number of filaments in the plane of greatest bonding parallel to the surface of the fabric is between 0.05 and 0.2.
    • 一种制造熔融织物的方法,包括形成随机布置的连续长丝的网,其中所述连续长丝可以长度增加至少3%,使所述纤维网经受处理以影响所述长丝的长度增加,同时限制幅材 从长度或宽度的变化,以便在幅材内产生细丝构型,其中至少10%的长丝在幅材的中间平面处与幅材的平面成45°至90°的角度, 并且随后粘合纤维网,使得在平行于织物表面的最大粘合平面中的键数与长丝数之比为0.05至0.2。
    • 97. 发明授权
    • Manufacture of bipyridylium salts
    • 联吡啶鎓盐的制造
    • US3886172A
    • 1975-05-27
    • US22527172
    • 1972-02-10
    • ICI LTD
    • CAIRNS JOHN FRANCISCASE JOHN REGINALD
    • C07D213/22C07D31/42
    • C07D213/22
    • A process is provided for the manufacture of di-(hydroxyalkyl) bipyridylium salts by interacting pyridine with an alkali-metal, preferably, the reaction is carried out in liquid ammonia and in the substantial absence of oxygen. The interaction products forms the corresponding alkali-metal salt of tetrahydro-bipyridyl. The tetrahydro-bipyridyl is reacted with an alkylene oxide to yield the corresponding di-(hydroxyalkyl)-tetrahydro-bipyridyl or salt thereof, which is in turn oxidized to the corresponding di(hydroxyalkyl) bipyridylium salt.
    • 提供了通过使吡啶与碱金属相互作用来制备二 - (羟基烷基)联吡啶鎓盐的方法,优选反应在液氨中和基本上不存在氧气下进行。 相互作用产物形成相应的四氢 - 联吡啶的碱金属盐。 四氢联吡啶与烯化氧反应,得到相应的二 - (羟基烷基) - 四氢联吡啶或其盐,其又被氧化成相应的二(羟烷基)联吡啶鎓盐。