Method of recovering constituents from polyester and cellulosic

Details Method of recovering constituents from polyester and cellulosic Method of recovering constituents from polyester and cellulosic

1974-11-18

1976-02-10

Seccuro, Carman J.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

8121, C08J 1104

Patent

active

039376710

ABSTRACT:
Textile wastes composed of blended polyester and cellulose fibers are subjected to the action of glacial acetic acid and acetic anhydride in the presence of a catalyst under conditions which serve to convert the cellulose component of the waste to cellulose acetate which is separated from the unreacted polyester component in the form of a solution adapted to be used in the manufacture of cellulose derivatives whereas the polyester is recovered in a form which may be garnetted to obtain a staple fiber for reuse.

REFERENCES:
patent: 2498398 (1950-02-01), Dasher
patent: 2567802 (1951-09-01), Carr et al.
patent: 2701268 (1955-02-01), Dasher
ott, et al., -- (Text Book) Cellulose Part II -- 4/1955 -- pp. 778-779.

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