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    • 9. 发明授权
    • Process for removing printing inks from printed wastepaper or from paper
circuit waters
    • 从印刷废纸或纸回路水中去除印刷油墨的方法
    • US5512134A
    • 1996-04-30
    • US256996
    • 1994-07-29
    • Peter DauteBerthold SchreckKlaus Hornfeck
    • Peter DauteBerthold SchreckKlaus Hornfeck
    • D21C5/02
    • D21C5/027Y02W30/648Y10S210/928
    • A process for removing printing inks from printed wastepaper in the presence of a deinking chemical is provided. In this process printed wastepaper is disintegrated to form a paper stock suspension and the detached printing ink particles are removed in known manner by flotation or washing in another stage. In this process, alkoxylates of blown oils are used as the deinking chemical. The deinking chemical is added during disintegration and/or before the flotation or washing step. Preferably, the printed wastepaper is disintegrated in the presence of 0.02 to 2% by weight and preferably 0.1 to 0.8% by weight, based on air-dry paper stock, of alkoxylates of blown oils. This deinking chemical also removed printing inks from paper circuit waters.
    • PCT No.PCT / EP93 / 00160 Sec。 371日期1994年7月29日第 102(e)日期1994年7月29日PCT 1993年1月25日PCT PCT。 出版物WO93 / 15260 PCT 日期:1993年8月5日。提供了在脱墨化学品存在下从印刷废纸上除去印刷油墨的方法。 在该方法中,印刷废纸被分解以形成纸浆悬浮液,并且以已知的方式通过浮选或洗涤在另一阶段中去除分离的印刷油墨颗粒。 在该方法中,使用吹塑油的烷氧基化物作为脱墨剂。 脱脂化学品在分解和/或浮选或洗涤步骤之前加入。 优选地,以空气干燥纸原料为0.02〜2重量%,优选为0.1〜0.8重量%的油墨的烷氧基化物,印刷废纸分解。 这种脱墨化学品也从纸循环水中除去印刷油墨。