Process for manufacturing cellulose acetate

Details Process for manufacturing cellulose acetate Process for manufacturing cellulose acetate

C - Chemistry, Metallurgy

08

B

C08B 3/06 (2006.01) C08H 8/00 (2010.01) C08B 17/02 (2006.01)

Patent

CA 2429079

The invention provides a process for manufacturing at low cost cellulose acetate, which is useful as a biodegradable plastic, using corncob meal which has hitherto been thrown away as a raw material. More specifically, the invention provides a process for manufacturing cellulose acetate, which comprises the steps of : steaming corncob meal at a temperature of 150 to 250°C and a pressure of 20 to 29 MPa; filtering the steamed corncob meal to obtain a solid product; and dehydrating and acetylating by adding acetic anhydride and sulfuric acid to the solid product. The steaming is preferably carried out by using a pressure vessel and the filtering is preferably carried out by using a filtering device.

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