Method of preparing cellulose esters

Details Method of preparing cellulose esters Method of preparing cellulose esters

1980-08-29

1982-05-11

Clingman, A. Lionel

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

Organic compounds

Carbohydrates or derivatives

536 63, C08B 306

Patent

active

043294464

ABSTRACT:
Disclosed is a method of preparing lower fatty acid esters of cellulose which comprises esterifying at a temperature of between about 75.degree. C. and about 110.degree. C. a cellulose compound having esterifiable hydroxyl groups with an esterifying bath comprising an organic acid anhydride, a diluent, and from about 0.3% to about 3.0% by weight, based on the weight of cellulose, of a catalyst selected from p-toluene sulfonic acid, methane sulfonic acid, methane disulfonic acid or m-benzene disulfonic acid.

REFERENCES:
patent: 2827455 (1958-03-01), Wells et al.
patent: 2861069 (1958-11-01), Touey et al.

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