Process for purification of nitrocellulose

Details Process for purification of nitrocellulose Process for purification of nitrocellulose

1980-07-23

1982-04-06

Griffin, Ronald W.

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

Organic compounds

Carbohydrates or derivatives

536 41, 536 42, C08B 504, C08B 510

Patent

active

043236693

ABSTRACT:
A process for purification of nitrocellulose containing residual acid from nitration is provided. In this process the nitrocellulose is cut in the presence of water to form an aqueous slurry of cut nitrocellulose fibers. The pH of the slurry is adjusted to a value of at least about 8 and the slurry is heated under pressure. The pH of the slurry is maintained above 8 during heating by addition of basic solution to the slurry. When the residual acid in the slurry is substantially completely neutralized, the fibers are separated from the slurry. The purified nitrocellulose is of reduced viscosity and satisfactory stability.

REFERENCES:
patent: 1633292 (1927-06-01), De Vries Shipley
patent: 1757481 (1930-05-01), Seel
patent: 1818733 (1931-08-01), Milliken
patent: 1911201 (1933-05-01), Milliken
patent: 1995117 (1935-03-01), Eskew
patent: 2039381 (1936-05-01), Bacon
patent: 2077455 (1937-04-01), Baker
patent: 2297734 (1942-10-01), Wyler et al.
patent: 2366880 (1945-01-01), Stern
patent: 2467324 (1949-04-01), Luce
patent: 2776965 (1957-01-01), Bennett et al.
patent: 2970996 (1961-02-01), Silk

Affiliated with

Also associated with

Rating

Process for purification of nitrocellulose does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process for purification of nitrocellulose, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for purification of nitrocellulose will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-593350