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    Colloidal borosilicates and their use in the production of paper
    92.
    发明公开
    Colloidal borosilicates and their use in the production of paper 有权
    哥伦比亚国家石油公司

    公开(公告)号：EP1388522A2

    公开(公告)日：2004-02-11

    申请号：EP03022853.0

    申请日：1998-09-17

    申请人： Ondeo Nalco Company

    发明人： Keiser, Bruce A. ,  Whitten, James E.

    IPC分类号： C01B35/10 ,  D21H21/10

    CPC分类号： C01B35/10 ,  D21H17/68 ,  D21H21/10

    摘要： A borosilicate retention aid composition is provided. The synthetic borosilicate has a particle size of from 1 to 2000 nm and a surface area of from 15 to 3000 m 2 /g. The borosilicate material is preferably a colloidal borosilicate. Methods for the preparation of the borosilicate material are disclosed.

    摘要翻译： 提供硼硅酸盐助留剂组合物。 合成硼硅酸盐的粒度为1〜2000nm，表面积为15〜3000m 2 / g。 硼硅酸盐材料优选为胶态硼硅酸盐。 公开了制备硼硅酸盐材料的方法。

    The production of paper using colloidal borosilicate
    94.
    发明公开
    The production of paper using colloidal borosilicate 有权
    Herstellung von Papier mit kolloidalen Borosilikaten

    公开(公告)号：EP1293603A2

    公开(公告)日：2003-03-19

    申请号：EP02025710.1

    申请日：1998-09-17

    申请人： NALCO CHEMICAL COMPANY

    发明人： Keiser, Bruce A. ,  Whitten, James E.

    IPC分类号： D21H21/10 ,  D21H23/76

    CPC分类号： C01B35/10 ,  D21H17/68 ,  D21H21/10

    摘要： A method is provided for the manufacture of a cellulosic sheet. The method comprises:

    a. forming a cellulosic furnish containing from 0.01 to 1.5% by weight cellulosic fiber;
    b. adding to the furnish:

    (i) from 0.00005 to 1.25% by weight, based on the dry weight of fiber in the furnish, of a borosilicate having a mole ratio of boron to silicon of from 1:1000 to 100:1, a mole ratio of alkali metal to silicon of from 6:1000 to 1.04:1, a particle size of from 1 to 2000 nm; and a surface area of from 15 to 3000 m 2 /g; and,
    (ii) from 0.001 to 0.5% by weight, based on the dry weight of fiber in the furnish of a substantially water soluble polymeric flocculant having a molecular weight greater than 500,000 daltons; and then,

    c.dewatering said furnish to obtain a cellulosic sheet.

    摘要翻译： 提供了一种用于制造纤维素片材的方法。 该方法包括：a。 形成含有0.01至1.5重量％纤维素纤维的纤维素配料; 湾 添加到配料中：（i）基于配料中的纤维的干重为0.00005至1.25重量％的硼与硅的摩尔比为1:1000至100:1的硼硅酸盐，摩尔 碱金属与硅的比例为6：1000〜1.04：1，粒径为1〜2000nm; 表面积为15-3000m 2 / g; 基于水分子量大于500,000道尔顿的基本上水溶性的聚合物絮凝剂，纤维的干重为0.001至0.5重量％;（ii）0.001至0.5重量％ 然后，将所述配料脱水以获得纤维素片材。

    PROCESS FOR MAKING PAPER
    95.
    发明公开
    PROCESS FOR MAKING PAPER 审中-公开
    制作纸张的过程

    公开(公告)号：EP1282742A1

    公开(公告)日：2003-02-12

    申请号：EP01916602.4

    申请日：2001-03-12

    申请人： BUCKMAN LABORATORIES INTERNATIONAL, INC.

    发明人： COVARRUBIAS, Rosa, M.

    IPC分类号： D21H23/04 ,  D21H13/48 ,  D21H17/67

    CPC分类号： D21H23/04 ,  D21H13/48 ,  D21H17/375 ,  D21H17/455 ,  D21H17/675 ,  D21H21/10

    摘要： Methods of making paper or paperboard are described. According to one method, fibrous cationic colloidal alumina microparticles and a polymer are introduced to a papermaking pulp to form a treated pulp having improved retention properties. The fibrous cationic colloidal alumina microparticles are preferably a fibrous cationic acetate salt of boehmite alumina having a zeta potential of greater than about 25 and a weight ratio of alumina to acetate of less than about 4. The polymer can be a cationic polymer, a nonionic polymer, an amphoteric polymer under cationic conditions, or combinations thereof. The pulp may also be treated with at least one coagulant, at least one flocculant, at least one cationic starch, at least one cellulytic enzyme, and/or other conventional papermaking pulp additives. The resulting pulp is formed into a sheet of pulp and then drained to form a paper or paperboard. Other papermaking processes are also described as is a papermaking apparatus for carrying out the methods. Paper and paperboard containing dried pulp that has been treated with fibrous cationic colloidal alumina microparticles and polymer are also described.

    摘要翻译： 描述了制造纸或纸板的方法。 根据一种方法，将纤维状阳离子胶体氧化铝微粒和聚合物引入到造纸纸浆中以形成具有改善的保持性能的处理过的纸浆。 纤维状阳离子胶体氧化铝微粒优选为具有大于约25的ζ电位和氧化铝与乙酸根的重量比小于约4的勃姆石氧化铝的纤维状阳离子乙酸盐。聚合物可以是阳离子聚合物，非离子聚合物 ，在阳离子条件下的两性聚合物，或其组合。 纸浆还可以用至少一种凝结剂，至少一种絮凝剂，至少一种阳离子淀粉，至少一种纤维素酶和/或其他常规造纸纸浆添加剂处理。 得到的纸浆形成一片纸浆，然后排水以形成纸或纸板。 其他造纸工艺也描述为用于实施所述方法的造纸设备。 还描述了含有用纤维状阳离子胶体氧化铝微粒和聚合物处理的干纸浆的纸和纸板。

    SILICA-BASED SOLS
    98.
    发明公开
    SILICA-BASED SOLS 有权
    硅胶基SOLS

    公开(公告)号：EP1242308A1

    公开(公告)日：2002-09-25

    申请号：EP00986107.1

    申请日：2000-11-29

    申请人： Akzo Nobel N.V. ,  Eka Chemicals AB

    发明人： GREENWOOD, Peter ,  LINSTEN, Magnus, Olof ,  JOHANSSON-VESTIN, Hans

    IPC分类号： C01B33/149 ,  D21H21/10 ,  D21H17/68 ,  D21H23/14 ,  C02F1/52

    CPC分类号： C02F1/56 ,  B01J13/0034 ,  B01J13/0039 ,  C01B33/149 ,  C02F1/545 ,  C02F2103/28 ,  D21H17/68 ,  D21H21/10

    摘要： The invention relates to an aqueous silica-based sol comprising a nitrogen-containing organic compound and silica-based particles with a specific surface area of at least 300 square meters per gram of silica. The invention further relates to a process for the production of an aqueous silica-based sol comprising a nitrogen-containing organic compound which comprises incorporating a nitrogen-containing organic compound into a silica-based sol containing silica-based particles with a specific surface area of at least 300 square meters per gram of silica. The invention also relates to the use of an aqueous silica-based sol comprising a nitrogen-containing organic compound and silica-based particles with a specific surface area of at least 300 square meters per gram of silica as a flocculating agent in the production of pulp and paper and in water purification. The invention further relates to a process for the production of paper from an aqueous suspension containing cellulosic fibres, and optional fillers, which comprises adding to the suspension (i) an aqueous silica-based sol comprising an organic nitrogen-containing compound and (ii) at least one charged organic polymer, forming and draining the suspension on a wire.

    摘要翻译： 本发明涉及包含含氮有机化合物和二氧化硅基颗粒的含水二氧化硅基溶胶，其比表面积至少为300平方米/克二氧化硅。 本发明还涉及包含含氮有机化合物的含水二氧化硅基溶胶的制备方法，该方法包括将含氮有机化合物掺入含二氧化硅基颗粒的二氧化硅基溶胶中，所述二氧化硅基颗粒的比表面积为 每克二氧化硅至少300平方米。 本发明还涉及包含含氮有机化合物和比表面积为至少300平方米/克二氧化硅的二氧化硅基颗粒的含水二氧化硅基溶胶在制备纸浆中作为絮凝剂的用途 和纸张和水净化。 本发明进一步涉及由含有纤维素纤维和任选填料的含水悬浮液生产纸的方法，其包括向悬浮液中加入（i）包含有机含氮化合物的含水二氧化硅基溶胶和（ii） 至少一种带电的有机聚合物，在金属丝上形成并排出悬浮液。