Organic compounds -- part of the class 532-570 series – Organic compounds – Carbohydrates or derivatives
Patent
1978-03-10
1980-06-03
Griffin, Ronald W.
Organic compounds -- part of the class 532-570 series
Organic compounds
Carbohydrates or derivatives
422163, 422189, C08B 500, C08B 1704
Patent
active
042063027
ABSTRACT:
In a continuous process for the nitration of cellulose, a slurry of cellulose in nitrating liquor is injected under pressure into a primary nitration reactor by means of an injection pump, the reactor comprising a loop of tubing, the slurry is circulated in the loop by means of a circulation pump at a rate which is greater than the rate of injection in order to ensure that the slurry is vigorously agitated, the slurry is optionally transferred, successively, from the primary loop to one or more secondary nitration reactors, each of which also comprises a loop of tubing equipped with a circulation pump, and the slurry is withdrawn from the final loop and the nitrocellulose is recovered.
REFERENCES:
patent: 1729628 (1929-10-01), Richter et al.
patent: 2238444 (1941-04-01), Fravel
patent: 2332527 (1943-10-01), Pyzel
patent: 2678310 (1954-05-01), Brooks
patent: 2927845 (1960-03-01), Plunkett
patent: 3035033 (1962-05-01), Schweitzer et al.
patent: 3203766 (1965-08-01), Mudd et al.
patent: 3293000 (1966-12-01), Marwil
Favrot Remy
Maures Michel B.
Mengelle Andre J.
Pollozec Francois A.
Royer Gontran
Griffin Ronald W.
Societe Nationole des Poudres et Explosifs
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