公开(公告)号：US06670469B1

公开(公告)日：2003-12-30

申请号：US09367404

申请日：1999-08-12

申请人： Christine Beyer ,  Frank Meister ,  Christoph Michels ,  Bernd Riedel ,  Eberhard Taeger

发明人： Christine Beyer ,  Frank Meister ,  Christoph Michels ,  Bernd Riedel ,  Eberhard Taeger

IPC分类号： C08B3700

CPC分类号： C08J9/16 ,  B01D15/08 ,  B01J2/06 ,  C08B1/003 ,  C08B16/00 ,  C08J3/14 ,  C08J3/16 ,  C08J9/28 ,  C08J2301/02 ,  G01N33/548

摘要： Process for producing regular porous pearl cellulose with a particle size in the range from 2 to 1,000 &mgr;m, comprising the steps: a) a cellulose having a degree of polymerisation in the range from 150 to 2,000 is dissolved in a solvent to form a solution of 0.5 to 25% by mass, b) the cellulose solution is finely divided and dispersed in a dispersant which is immiscible with said solution and has a viscosity in the range from 10 to 80,000 mPa·s, c) the dispersed solution particles are solidified to regular pearl particles by precipitating with a liquid precipitating agent miscible with the solvent (1) after cooling the dispersion to below the melting temperature of the cellulose solution and separating the frozen particles of the cellulose solution from the dispersant or (2) directly in the dispersion, and d) the pearl particles are separated from the liquid mixture of solvent, precipitating agent and possibly dispersant.

摘要翻译： 制备粒径为2〜1000μm的规则多孔珍珠纤维素的方法，包括以下步骤：a）将聚合度为150至2,000的纤维素溶于溶剂中以形成溶液 0.5〜25质量％，b）将纤维素溶液细分散分散在与所述溶液不混溶的分散剂中，粘度在10〜80,000mPa·s的范围内，c）分散溶液颗粒固化成 将分散体冷却至低于纤维素溶液的熔融温度并与分散剂分离的纤维素溶液的冷冻颗粒，或（2）直接在分散体中分散，将与溶剂（1）混溶的液体沉淀剂沉淀出来的规则的珍珠粒子 ，和d）珍珠颗粒与溶剂，沉淀剂和可能的分散剂的液体混合物分离。