Carboxylated cellulose ester and manufacture thereof

Details Carboxylated cellulose ester and manufacture thereof Carboxylated cellulose ester and manufacture thereof

1985-04-18

1986-05-20

Griffin, Ronald W.

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

Organic compounds

Carbohydrates or derivatives

106 26, 4284251, 428464, 524 37, 536 65, 536 68, 536 76, 536 80, C08B 1504, C09D 318, C09D 1114

Patent

active

045902658

ABSTRACT:
The present invention provides a novel cellulosic material and a process for preparing the same. The cellulosic material is a carboxylated cellulose ester material having an acid number of at least about 5, an inherent viscosity of from about 0.01 to about 1.00 and wherein the anhydroglucose units thereof have ring substituents comprising by weight based on total polymer weight, of from about 0.05 to about 20% hydroxyl groups, from about 0.5 to about 44% acetyl groups, from 0 to about 54% butyryl groups, from 0 to about 47% propionyl groups, from about 0.4 to about 4.0% total carboxyl groups wherein from about 20% to about 100% of these carboxyl groups are non-saponifiable backbone, and wherein the material has a lactone level of from about 4.52.times.10.sup.-5 to about 6.13.times.10.sup.-4. The carboxylated cellulose esters of the present invention are prepared by reacting a cellulose ester with ozone at a temperature of about 25.degree. to 80.degree. C. for a period of time sufficient to yield the carboxylated cellulose ester product. Also disclosed are end use applications for the carboxylated cellulose esters, such as metal coatings, pigment dispersions, wood coatings, inks, etc.

REFERENCES:
patent: 2105570 (1938-01-01), Whitehead
patent: 3138564 (1964-06-01), Borunsky
patent: 4034764 (1977-07-01), Rainer et al.
patent: 4134809 (1979-01-01), Pacifici et al.
patent: 4233354 (1980-11-01), Hagegawa et al.
patent: 4256492 (1981-03-01), Matsumoto et al.
patent: 4261946 (1981-04-01), Goyert et al.
patent: 4306998 (1981-12-01), Wenzel et al.
patent: 4325997 (1982-04-01), Brewer et al.
patent: 4342865 (1982-08-01), Brewer et al.
patent: 4352901 (1982-10-01), Maxwell et al.
patent: 4357469 (1982-11-01), Schor
patent: 4389502 (1983-06-01), Fry et al.

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