PROCESS FOR BLEACHING PULP
    8.
    发明申请
    PROCESS FOR BLEACHING PULP 审中-公开
    漂白纸浆的方法

    公开(公告)号:WO2009056893A2

    公开(公告)日:2009-05-07

    申请号:PCT/GB2008/051027

    申请日:2008-11-03

    CPC classification number: D21C9/1042 D21C9/163

    Abstract: A process for the bleaching of wood pulp using one or more peroxide oxidising agents wherein the process includes treatment of the pulp with a mixture of chelating agents comprising: (a) a first chelating agent selected from the group consisting of: ethylenediamine N,N -disuccinic acid, methylglycinediacetic acid, glutamic acid N,N-diacetic acid, imino disuccinic acid and anions and mixtures thereof; and (b) a second chelating agent selected from the group consisting of: diethylene triamine pentaacetic acid, ethylenediamine tetraacetic acid, diethylenetriamine penta methylene phosphonic acid and anions and mixtures thereof.

    Abstract translation: 一种使用一种或多种过氧化物氧化剂漂白木浆的方法,其中所述方法包括用螯合剂的混合物处理纸浆,所述混合物包括:(a)选自以下的第一螯合剂:乙二胺N,N- 二琥珀酸,甲基甘氨酸二乙酸,谷氨酸N,N-二乙酸,亚氨基二琥珀酸,阴离子及其混合物; 和(b)选自二亚乙基三胺五乙酸,乙二胺四乙酸,二亚乙基三胺五亚甲基膦酸和阴离子及其混合物的第二螯合剂。

    COMPOSITION
    10.
    发明申请
    COMPOSITION 审中-公开
    组成

    公开(公告)号:WO2009013534A1

    公开(公告)日:2009-01-29

    申请号:PCT/GB2008/050602

    申请日:2008-07-21

    CPC classification number: C07C229/24 C11D3/33 D21C9/1042 D21C9/163

    Abstract: The present invention provides a salt of ethylenediamine disuccinic acid comprising at least 1.6 mole of alkaline earth metal per mole of ethylenediamine disuccinic acid. Salts of the invention have been found to be useful in providing compositions comprising hydrogen peroxide having improved stability.

    Abstract translation: 本发明提供了每摩尔乙二胺二琥珀酸至少含有1.6摩尔碱土金属的乙二胺二琥珀酸盐。 已经发现本发明的盐可用于提供包含具有改善的稳定性的过氧化氢的组合物。

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