Daicel Chemical Industries, Ltd.

Fuji Photo Film Company, Limited

Japan Aerospace Exploration Agency

Ko Murakami

Hiroki Taniguchi

Shu Shimamoto

Atsunobu Kiyose

Toshinori Okano

Shogo Tomiyama

Toshiyuki Katsumi

Syouji Kobayashi

Keiichi Hori

The present invention provides a liquid gas generating composition comprising the following (a) to (c) components, wherein the content ratio of (b) component is 0.5 mass % or more and less than 5.0 mass %:

Gas generating composition

Cellulose acetate having a high moldability and low solution viscosity in spite of having a high average degree of polymerization is obtained. The low molecular weight components of cellulose acetate (e.g., CTA having average degree of acetylation of 59.0 to 62.5%) are eluted with a washing solvent to produce a cellulose acetate having a molecular weight distribution Mw/Mn of 1 to 1.7. As the washing solvent, those swell or partially dissolve the cellulose acetate, for example, those which dissolve 0.1 to 30% by weight of cellulose acetate can be used. This solvent includes, for example, a solvent having a solubility parameter .delta. of 7 to 12.5 (ketones, ethers, organic acid, esters, etc.).

Cellulose acetate with high moldability and process for production

Growing community of inventors

Hyogo, Japan

Ko Murakami