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OFFICE WASTEPAPER DEINKING PROCESS

机译:办公垃圾整理程序

摘要

This invention related to a process for the deinking of office wastepaperstocks which comprises: a) converting the wastepaper toa pulp, b) contacting the pulp with an aqueous medium of alkaline pHcontaining between 0.05 and 2 percent by weight, calculated ona dry weight basis of the pulp, of a deinking agent comprising a firstcomponent comprising at least one ethylene oxide adduct of adetergent-range alcohol having in the range of from 8 to 20 carbon atoms andan average of from 3 to 20 oxyethylene units per molecule ofalcohol, a second component selected from the group consisting of one or moredetergent-range olefins having from 8 to 22 carbon atoms,one or more saturated hydrocarbons having from 8 to 20 carbon atoms, andmixtures thereof and optionally a third component comprisinga detergent-range alcohol having from 8 to 20 carbon atoms, and c) treatingthe resulting pulp-containing medium by washing or flotationto remove suspended ink therefrom.
机译:本发明涉及办公室废纸脱墨的方法包括以下内容的库存:a)将废纸转换为a)纸浆; b)使纸浆与碱性pH值的水性介质接触含量按重量计介于0.05%和2%之间包括第一纸浆的脱墨剂的纸浆的干重基础组分包含至少一种环氧乙烷加合物具有8至20个碳原子的去污剂级醇每个分子平均3至20个氧化乙烯单元酒精,第二种成分,选自一种或多种具有8至22个碳原子的去污剂级烯烃,一种或多种具有8至20个碳原子的饱和烃,和它们的混合物和任选地包含具有8至20个碳原子的洗涤剂范围的醇,和c)处理通过洗涤或浮选得到的含纸浆的介质从中去除悬浮的墨水。

著录项

  • 公开/公告号CA2233002C

    专利类型

  • 公开/公告日2005-08-16

    原文格式PDF

  • 申请/专利权人 SHELL CANADA LIMITED;

    申请/专利号CA19962233002

  • 发明设计人 BORCHARDT JOHN KEITH;BLANCO RUTH JAVIER;

    申请日1996-10-09

  • 分类号D21C5/02;

  • 国家 CA

  • 入库时间 2022-08-21 22:14:29

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