Asahi Kasei Kabushiki Kaisha

Asahi Kasei Chemicals Corporation

Shun'ichi Gomi

Etsuo Kamada

Kazuhiro Obae

Yohsuke Honda

Naoaki Yamazaki

Kazuhiro Oobae

Cellulose powder having an especially excellent balance among moldability, fluidity and disintegrating property is provided. Cellulose powder having an average polymerization degree of 150-450, an average L/D (the ratio of the major axis to the minor axis) value of particles of 75 &#x3bc;m or less of 2.0-4.5, an average particle size of 20-250 &#x3bc;m, an apparent specific volume of 4.0-7.0 cm/g, an apparent tapping specific volume of 2.4-4.5 cm/g, and an angle of repose of 55&#xb0; or less.

Cellulose powder

An excipient comprising trehalose having a purity of 99.0% or more, a proportion of particles of 75 &mgr;m or more of 2 to 90 wt %, an average particle size of 10 to 250 &mgr;m, an apparent specific volume of 1.5 to 3.5 ml/g, and a whiteness of 90% or more.

Excipient

Growing community of inventors

Nobeoka, Japan

Shun'ichi Gomi