Processes for the production of free-flowing nitrocellulose

Details Processes for the production of free-flowing nitrocellulose Processes for the production of free-flowing nitrocellulose

1984-09-05

1986-05-20

Lechert, Jr., Stephen J.

Plastic and nonmetallic article shaping or treating: processes

Explosive or propellant article shaping or treating

Forming or treating particulate material

149 2, 149 96, 1491096, 264 33, 536 35, 536 38, C06B 2100

Patent

active

045900191

ABSTRACT:
Processes for the production of free-flowing, non-fibrous, alcohol-moistened nitrocellulose, characterized in that the water- or alcohol-moist nitrocellulose is softened with a solvent mixture of a nitrocellulose solvent and a lower aliphatic alcohol and water until the nitrocellulose fibers disappear, the alcohol-containing, liquid phase is decanted off from the two-phase mixture formed and the nitrocellulose-containing phase is processed into granulate using a screw extruder, the quantity of solvent mixture is used amounting to between 75 and 155% by weight, based on dry nitrocellulose, and the components of the mixture, NC-solvent:lower alcohol:water, being present in a ratio of 1:(0.2-4):(0.2-4).

REFERENCES:
patent: 3897733 (1975-08-01), Stiefel et al.

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