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    Process for preparing stable, finely divided polymer dispersions
    1.
    发明授权
    Process for preparing stable, finely divided polymer dispersions 失效
    制备稳定，细分散的聚合物分散体的方法

    公开(公告)号：US6103786A

    公开(公告)日：2000-08-15

    申请号：US28941

    申请日：1998-02-24

    申请人： Martin Hoch ,  Rainer Elbert ,  Bernd Klinksiek

    发明人： Martin Hoch ,  Rainer Elbert ,  Bernd Klinksiek

    IPC分类号： C08J3/09 ,  C08J3/03 ,  C08J3/07 ,  C08J3/00 ,  C07C41/40 ,  C08F2/32

    CPC分类号： C08J3/07 ,  Y10S516/925 ,  Y10S526/932

    摘要： Stable polymer dispersions with polymer particle sizes of 0.1 to 10 .mu.m are prepared by dissolving a water-in-oil emulsion, comprising a polymer dissolved in an organic solvent which is immiscible with water (organic phase) and an aqueous phase, wherein the viscosity of the organic phase is 1.0 to 20,000 mPas (measured at 25.degree. C.), the surface tension between organic and aqueous phase is 0.01 to 30 mN/m, the particle size of the water emulsified in the organic phase is 0.2 to 50 .mu.m and the ratio by volume of organic phase to aqueous phase is in the range 80:20 to 20:80, subjecting this emulsion to a shear process at a shear power of 1.times.10.sup.3 to 1.times.10.sup.8 Watts per cm.sup.3, wherein the water-in-oil emulsion is converted into an oil-in-water emulsion.

    摘要翻译： 通过将包含溶解在与水（有机相）和水相不混溶的有机溶剂中的聚合物的油包水乳液溶解在一起，制备聚合物粒径为0.1-10μm的稳定的聚合物分散体，其中粘度 有机相的含量为1.0〜20,000mPas（25℃测定），有机相和水相的表面张力为0.01〜30mN / m，有机相中乳化的水的粒径为0.2〜50μm m，并且有机相与水相的体积比在80:20至20:80的范围内，以1×10 3至1×10 8瓦/ cm 3的剪切力使该乳液经受剪切过程，其中油包水 将乳液转化成水包油乳液。

    Finely divided polysaccharide derivatives
    8.
    发明授权
    Finely divided polysaccharide derivatives 有权
    细分多糖衍生物

    公开(公告)号：US06872820B2

    公开(公告)日：2005-03-29

    申请号：US09968497

    申请日：2001-10-01

    申请人： Gunter Weber ,  Detmar Redeker ,  Bernd Klinksiek ,  Jürgen Hinderer ,  Benno Ulfik

    发明人： Gunter Weber ,  Detmar Redeker ,  Bernd Klinksiek ,  Jürgen Hinderer ,  Benno Ulfik

    IPC分类号： B32B27/32 ,  B65D75/58 ,  C08B11/00 ,  C08B11/20

    CPC分类号： B65D75/5855 ,  B32B27/32 ,  B32B2553/00

    摘要： Finely divided polysacharide derivatives are described. The finely divided polysacharide derivatives are prepared by a process comprising: a) forming an aqueous composition comprising a polysaccharide derivative and water, in which the polysaccharide derivative is soaked or dissolved; b) converting the polysaccharide derivative of the aqueous composition into finely divided solid particles by, (i) contacting the aqueous composition with superheated water vapor in a dryer-pulverizer; or (ii) causing the polysaccharide derivative of the aqueous composition to flocculate; and c) optionally drying the finely divided solid particles of step b). The primary structures of the polysaccharide starting material are largely removed, and the product has a shape factor of less than 5 and greater than or equal to 1.

    摘要翻译： 描述了细分多糖的衍生物。 精细分散的多糖苷衍生物通过以下方法制备，该方法包括：a）形成包含多糖衍生物和水的水性组合物，其中多糖衍生物被浸泡或溶解; b）通过以下步骤将水性组合物的多糖衍生物转化成细分散的固体颗粒：（i）在干燥器 - 粉碎机中使含水组合物与过热水蒸汽接触; 或（ⅱ）引起含水组合物的多糖衍生物絮凝; 和c）任选地干燥步骤b）的细碎固体颗粒。 多糖原料的主要结构大部分被除去，产物的形状因子小于5且大于或等于1。