Method for treating slurry of comminuted cellulosic fibrous material
    5.
    发明专利
    Method for treating slurry of comminuted cellulosic fibrous material 审中-公开
    用于处理提交的细胞纤维素材料的方法

    公开(公告)号:JP2009074234A

    公开(公告)日:2009-04-09

    申请号:JP2009003068

    申请日:2009-01-09

    Abstract: PROBLEM TO BE SOLVED: To produce fully bleached (typically having a whiteness degree of over 89 or more 90% ISO) cellulose pulp from an environmentally friendly (ECF), yet commercially viabled comminuted cellulosic fibrous material.
    SOLUTION: A method for producing bleached chemical pulp from comminuted cellulosic fibrous material comprises: (a) treating the material in a chemical pulping process in the presence of chemical additive to produce a chemical pulp containing at least some of the additive; (b) treating the chemical pulp with at least one elemental-chlorine-free bleaching agent to produce a bleached chemical pulp having at least some discoloration due to the presence of the chemical additive; and (c) treating the bleached pulp with at least one oxidizing agent to remove the discoloration produced by the presence of the chemical additive.
    COPYRIGHT: (C)2009,JPO&INPIT

    Abstract translation: 要解决的问题:为了从环保(ECF)生产完全漂白(通常具有超过89或更高的90%ISO的白度)的纤维素纸浆,但商业上可以使用粉碎的纤维素纤维材料。 解决方案:从粉碎的纤维素纤维材料生产漂白的化学纸浆的方法包括:(a)在化学制浆过程中在化学添加剂的存在下处理该材料以产生含有至少一些添加剂的化学纸浆; (b)用至少一种不含元素的氯漂白剂处理化学纸浆以产生由于存在化学添加剂而具有至少一些变色的漂白化学纸浆; 和(c)用至少一种氧化剂处理漂白的纸浆以除去由化学添加剂的存在产生的变色。 版权所有(C)2009,JPO&INPIT

Patent Agency Ranking