Cellulose fiber process

Details Cellulose fiber process Cellulose fiber process

1977-11-23

1979-03-20

Woo, Jay H.

Plastic and nonmetallic article shaping or treating: processes

Reactive gas or vapor treatment of work

Work is organic material

106163R, 106168, 264207, D01F 618, C08L 124

Patent

active

041453913

ABSTRACT:
A process for producing shaped articles of cellulose is disclosed, wherein a solution of cellulose in dimethylsulphoxide (DMSO) and formaldehyde, at a formaldehyde/cellulose weight ratio of 0.2 to 2, and at a cellulose concentration of at least 6% by weight, based on the volume of DMSO, is spun into a gaseous atmosphere containing ammonia.
The process of the present invention permits the cellulosic solution to be formed into shaped articles in a very rapid and economical manner. The invention is especially useful in the production of filaments which can be used in the textile field, but other shaped articles, such as fibers, threads, films and sheets, can also be made from the cellulosic solution.

REFERENCES:
patent: 759332 (1904-05-01), Waite
patent: 842125 (1907-01-01), Vittenet
patent: 849823 (1907-04-01), Waite
patent: 1652206 (1927-12-01), Lehousse
patent: 1881742 (1932-10-01), Lilkenfeld
patent: 4022631 (1977-05-01), Turbak et al.
patent: 4028132 (1977-06-01), Litt et al.

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