Process for preparing reduced odor and improved brightness
individualized, polycarboxylic acid crosslinked fibers
    5.
    发明授权
    Process for preparing reduced odor and improved brightness individualized, polycarboxylic acid crosslinked fibers 失效
    用于制备减少气味和改善亮度的方法单独的多元羧酸交联纤维

    公开(公告)号:US5562740A

    公开(公告)日:1996-10-08

    申请号:US490793

    申请日:1995-06-15

    Abstract: Disclosed is a process for making reduced odor individualized, crosslinked fibers which includes the steps of providing cellulosic fibers, contacting the fibers with a solution containing a C.sub.2 -C.sub.9 polycarboxylic acid crosslinking agent, mechanically separating the fibers into substantially individual form, drying the fibers and reacting the crosslinking agent with the individualized fibers to form intrafiber crosslink bonds. The individualized cellulosic fibers are then contacted with a strong alkaline solution and strong oxidizing agent to reduce the odor and increase the brightness. Preferably, the crosslinking agent is citric acid, and preferably, between about 1.0 weight % and about 12.0 weight % of the crosslinking agent reacts to form the intrafiber crosslink bonds. Preferably, the alkaline solution is an aqueous solution of sodium hydroxide, and preferably, about 0.09 weight % of the sodium hydroxide, on a dry fiber weight basis, is applied to the crosslinked fibers. Preferably, the oxidizing agent is hydrogen peroxide, and preferably, about 0.04 weight % of the hydrogen peroxide, on a dry fiber weight basis, is applied to the crosslinked fiber. The reduced odor individualized, crosslinked fibers are useful in a variety of absorbent structure applications.

    Abstract translation: 公开了一种制备减少气味的个体化交联纤维的方法,其包括以下步骤:提供纤维素纤维,使纤维与含有C 2 -C 9多元羧酸交联剂的溶液接触,将纤维机械分离成基本上单独的形式,干燥纤维和 使交联剂与各自的纤维反应形成纤维内交联键。 然后将个体化纤维素纤维与强碱性溶液和强氧化剂接触以降低气味并增加亮度。 优选地,交联剂是柠檬酸,并且优选约1.0重量%至约12.0重量%的交联剂反应以形成纤维内交联键。 优选地,碱性溶液是氢氧化钠的水溶液,优选将基于干纤维重量的约0.09重量%的氢氧化钠施加到交联纤维上。 优选地,氧化剂是过氧化氢,优选地,基于干纤维重量的约0.04重量%的过氧化氢施加到交联纤维上。 减少的气味个性化的交联纤维可用于各种吸收结构应用。

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