Process for the deinking of cellulosic materials
    2.
    发明授权
    Process for the deinking of cellulosic materials 失效
    脱脂纤维素材料的工艺

    公开(公告)号:US4935096A

    公开(公告)日:1990-06-19

    申请号:US280371

    申请日:1988-12-06

    IPC分类号: D21C5/02

    摘要: An improved method for deinking waste printed, cellulosic fibrous materials which includes the addition of ionic surfactants either alone or in combination with non-ionic surfactants. The ionic surfactants are anionic, cationic or amphoteric.

    摘要翻译: 一种用于脱墨的纤维素纤维材料的改进方法,其包括单独或与非离子表面活性剂组合添加离子表面活性剂。 离子表面活性剂是阴离子的,阳离子的或两性的。

    Solubilization of nonionic surfactants useful in wood pulp deresination
    3.
    发明授权
    Solubilization of nonionic surfactants useful in wood pulp deresination 失效
    用于木浆脱胶的非离子表面活性剂的溶解

    公开(公告)号:US4426254A

    公开(公告)日:1984-01-17

    申请号:US374839

    申请日:1982-05-05

    IPC分类号: B01F17/00 D21C3/22 D21C9/08

    摘要: A process for extracting resin from wood pulp by contacting the pulp at elevated temperature with an aqueous medium comprising between about 2 and 15 percent by weight sodium hydroxide and between about 0.2 and 1.0% weight of an ethylene oxide condensation product, and also comprising in specified proportion one or more substances selected from the group consisting of a C.sub.12 alpha-olefin sulfonate and a particular C.sub.21 dicarboxylic acid. The sulfonate and dicarboxylic acid substantially enhance solubilization of the condensation product deresination agent in the highly polar aqueous medium.

    摘要翻译: 一种从木浆中提取树脂的方法,该方法是在升高的温度下与纸浆接触,所述水性介质包含约2至15重量%的氢氧化钠和约0.2至1.0重量%的环氧乙烷缩合产物,并且还包括指定的 比例选自C12α-烯烃磺酸盐和特定C21二羧酸的一种或多种物质。 磺酸盐和二羧酸基本上增强了缩合产物脱离剂在高极性水性介质中的增溶作用。

    Veneer production
    4.
    发明授权
    Veneer production 失效
    单板生产

    公开(公告)号:US4108226A

    公开(公告)日:1978-08-22

    申请号:US758908

    申请日:1977-01-03

    申请人: L. F. Bornstein

    发明人: L. F. Bornstein

    IPC分类号: B27K5/06 B27L5/00 B27M1/06

    摘要: Veneer production from softwood logs is improved by adding at least about 0.003% of urea to the hot water soaking vats prior to peeling the veneer from the logs. Enhanced results are achieved when urea is added together with a base such as sodium hydroxide.

    摘要翻译: 在将木材从原木剥离之前,通过向热水浸泡桶中加入至少约0.003%的尿素来改善从软木原木生产的单板。 当将脲与碱如氢氧化钠一起加入时,可以实现增强的结果。