CELLULOSE POWDER HAVING EXCELLENT SEGREGATION PREVENTIVE EFFECT, AND COMPOSITIONS THEREOF
申请人:Asahi Kasei Chemicals Corporation
公开号:EP2287234A1
公开(公告)日:2011-02-23
With regard to compositions derived from active ingredients and other additives in medical, food and industrial fields, there have been problems that the active ingredients cannot be uniformly mixed, and that the active ingredients become segregated and lose uniformity as the active ingredients undergo transport, input, and filling processes. There is provided a cellulose powder which improves the uniformity of compositions containing active ingredients or other additives to prevent segregation of the active ingredients, wherein the cellulose powder contains cellulose I type crystals, has an average particle diameter of less than 30 µm, a powder density of 0.1 to 0.45 g/cm3, a tapping density of 0.1 to 0.5 g/cm3, a repose angle of 35 to 50°, a specific surface of more than or equal to 0.1 m2/g and less than 20 m2/g, an internal friction angle of 36 to 42°, and is a cellulose powder including a secondary flocculation structure in which primary particles are flocculated.
关于医疗、食品和工业领域中由活性成分和其他添加剂制成的组合物,一直存在着活性成分不能均匀混合,以及活性成分在运输、输入和灌装过程中发生分离和失去均匀性的问题。本发明提供了一种纤维素粉末,可改善含有活性成分或其他添加剂的组合物的均匀性,防止活性成分的偏析,其中纤维素粉末含有纤维素 I 型晶体,平均颗粒直径小于 30 µm,粉末密度为 0.1至0.45克/立方厘米,攻丝密度为0.1至0.5克/立方厘米,倾伏角为35至50°,比表面大于或等于0.1平方米/克但小于20平方米/克,内摩擦角为36至42°,并且是一种纤维素粉末,包括二级絮凝结构,其中初级粒子被絮凝。