Bleaching of cellulosic fibre material with peroxide using polymers as a stabiliser
    1.
    发明申请
    Bleaching of cellulosic fibre material with peroxide using polymers as a stabiliser 有权
    使用聚合物作为稳定剂漂白纤维素纤维材料与过氧化物

    公开(公告)号:US20060144534A1

    公开(公告)日:2006-07-06

    申请号:US10541775

    申请日:2004-01-09

    IPC分类号: D21C9/16 D06L3/02

    CPC分类号: D21C9/1042 D21C9/163

    摘要: The present invention relates to a process for bleaching a cellulosic fibre material with a peroxide compound in an aqueous alkaline medium, comprising a bleaching step wherein: a) a first polymer (A) comprising a homopolymer of acrylic acid, methacrylic acid or maleic acid, or a copolymer of acrylic acid and/or methacrylic acid with an unsaturated dicarboxylic acid, and a solution of a second polymer (B) comprising a poly-alfa-hydroxyacrylic acid or a salt thereof, are added to a cellulosic fibre material, and b) thereafter adding a peroxide compound and an alkaline substance and carrying out the bleaching.

    摘要翻译: 本发明涉及一种在含水碱性介质中用过氧化物漂白纤维素纤维材料的方法,包括漂白步骤,其中:a)包含丙烯酸,甲基丙烯酸或马来酸的均聚物的第一聚合物(A) 或丙烯酸和/或甲基丙烯酸与不饱和二羧酸的共聚物,以及包含聚α-羟基丙烯酸或其盐的第二聚合物(B)的溶液加入到纤维素纤维材料中,b ),然后加入过氧化物和碱性物质并进行漂白。

    Bleaching of cellulosic fibre material with peroxide using polymers as a stabiliser
    2.
    发明授权
    Bleaching of cellulosic fibre material with peroxide using polymers as a stabiliser 有权
    使用聚合物作为稳定剂漂白纤维素纤维材料与过氧化物

    公开(公告)号:US07754048B2

    公开(公告)日:2010-07-13

    申请号:US10541775

    申请日:2004-01-09

    IPC分类号: D21C3/00 D06L3/02

    CPC分类号: D21C9/1042 D21C9/163

    摘要: The present invention relates to a process for bleaching a cellulosic fibre material with a peroxide compound in an aqueous alkaline medium, comprising a bleaching step wherein: a) a first polymer (A) comprising a homopolymer of acrylic acid, methacrylic acid or maleic acid, or a copolymer of acrylic acid and/or methacrylic acid with an unsaturated dicarboxylic acid, and a solution of a second polymer (B) comprising a poly-alpha-hydroxyacrylic acid or a salt thereof, are added to a cellulosic fibre material, and b) thereafter adding a peroxide compound and an alkaline substance and carrying out the bleaching.

    摘要翻译: 本发明涉及一种在含水碱性介质中用过氧化物漂白纤维素纤维材料的方法,包括漂白步骤,其中:a)包含丙烯酸,甲基丙烯酸或马来酸的均聚物的第一聚合物(A) 或丙烯酸和/或甲基丙烯酸与不饱和二羧酸的共聚物和包含聚-α-羟基丙烯酸或其盐的第二聚合物(B)的溶液加入到纤维素纤维材料中,并且b ),然后加入过氧化物和碱性物质并进行漂白。