Process for partial hydrolysis

Abstract

Abstract PURPOSE:To obtain an acetyl cellulose having low substitution degree and containing relatively large amount of sec-hydroxyl group in the molecule, by treating a cellulose acetate having high substitution degree under a specific hydrolysis condition. CONSTITUTION:A cellulose acetate having high substitution degree is partially hydrolyzed by treating the cellulose acetate in the presence of an alkali metal hydroxide (e.g. NaOH, KOH, etc.) and hydrogen peroxide to effect the preferential formation of sec-hydroxyl group. The amount of the alkali metal hydroxide is preferably >=1 mol-equivalent based on the glucose anhydride unit of the cellulose. The reaction is carried out preferably in a mixture of an organic solvent (e.g. THF, dioxane, etc.) and water.

Inventors

• 👤 Masahiro Kagotani
• 👤 籠谷　昌弘
• 👤 Haneshian Sutefuan
• 👤 ステフアン・ハネシアン
• 👤 Takeshi Sei
• 👤 清　剛

Bibliographic Details