Cellulose acetate excellent in physical strength, and process fo

Details Cellulose acetate excellent in physical strength, and process fo Cellulose acetate excellent in physical strength, and process fo

1998-10-09

1999-11-23

Lee, Howard C.

Organic compounds -- part of the class 532-570 series

Organic compounds

Carbohydrates or derivatives

536 69, 536 70, 536 76, 536 80, C08B 306, C08B 102

Patent

active

059903040

ABSTRACT:
An object of the invention is to obtain cellulose acetate with improved physical properties, particularly film strength arid improved flexibility of the molded product. Cellulose acetate wherein average degree of acetylation is not less than 59%, viscosity average degree of polymerization (DP) is not less than 290, and concentrated solution viscosity (.eta.) according to the falling ball viscosity method for viscosity average degree of polymerization (DP) is expressed by the following formula (1): 2.814.times.ln(DP)-11.753.ltoreq.ln(.eta.).ltoreq.7.28.times.ln(DP)-37.059 (1) and a process for production thereof.

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