Chlorohydrin and cationic compounds having high affinity for pulp or paper
    3.
    发明申请
    Chlorohydrin and cationic compounds having high affinity for pulp or paper 失效
    对纸浆或纸具有高亲和力的氯醇和阳离子化合物

    公开(公告)号:US20080060775A1

    公开(公告)日:2008-03-13

    申请号:US11983366

    申请日:2007-11-08

    摘要: Selected chlorohydrin and cationic compounds containing nitroxide or hydroxylamine moieties are effective in stabilizing pulp or paper, especially pulp or paper containing lignin, against yellowing and discoloration due to the adverse effects of light. These compounds are added at various points in the paper-making process, especially at the wet ends, making the need for water soluble or water dispersible materials having high affinity for pulp or paper essential. This performance is often further enhanced by the presence of one or more coadditives selected from the group consisting of the UV absorbers, the polymeric inhibitors, the nitrones, the fluorescent whitening agents and metal chelating agents. Combinations of hydroxylamines or their salts, benzotriazole or benzophenone UV absorbers and a metal chelating agent are particularly effective.

    摘要翻译: 含有氮氧自由基或羟胺部分的选择性氯代醇和阳离子化合物在稳定纸浆或纸,特别是含有木质素的纸浆或纸张时,由于光的不利影响而防止黄变和变色,是有效的。 这些化合物在造纸过程中的各个点加入,特别是在湿端,因此需要对纸浆或纸张具有高亲和力的水溶性或水分散性材料。 通过存在一种或多种选自紫外线吸收剂,聚合物抑制剂,硝酮,荧光增白剂和金属螯合剂的共添加剂,这种性能通常进一步增强。 羟胺或其盐,苯并三唑或二苯甲酮紫外线吸收剂和金属螯合剂的组合是特别有效的。

    Chlorohydrin and cationic compounds having high affinity for pulp or paper
    4.
    发明申请
    Chlorohydrin and cationic compounds having high affinity for pulp or paper 失效
    对纸浆或纸具有高亲和力的氯醇和阳离子化合物

    公开(公告)号:US20050092452A1

    公开(公告)日:2005-05-05

    申请号:US10978673

    申请日:2004-11-01

    摘要: Selected chlorohydrin and cationic compounds containing nitroxide or hydroxylamine moieties are effective in stabilizing pulp or paper, especially pulp or paper containing lignin, against yellowing and discoloration due to the adverse effects of light. These compounds are added at various points in the paper-making process, especially at the wet ends, making the need for water soluble or water dispersible materials having high affinity for pulp or paper essential. This performance is often further enhanced by the presence of one or more coadditives selected from the group consisting of the UV absorbers, the polymeric inhibitors, the nitrones, the fluorescent whitening agents and metal chelating agents. Combinations of hydroxylamines or their salts, benzotriazole or benzophenone UV absorbers and a metal chelating agent are particularly effective.

    摘要翻译: 含有氮氧自由基或羟胺部分的选择性氯代醇和阳离子化合物在稳定纸浆或纸,特别是含有木质素的纸浆或纸张时,由于光的不利影响而防止黄变和变色,是有效的。 这些化合物在造纸过程中的各个点加入,特别是在湿端,因此需要对纸浆或纸张具有高亲和力的水溶性或水分散性材料。 通过存在一种或多种选自紫外线吸收剂,聚合物抑制剂,硝酮,荧光增白剂和金属螯合剂的共添加剂,这种性能通常进一步增强。 羟胺或其盐,苯并三唑或二苯甲酮紫外线吸收剂和金属螯合剂的组合是特别有效的。