Method and device for the continuous, single-step production...

Details Method and device for the continuous, single-step production... Method and device for the continuous, single-step production...

2005-04-05

2005-04-05

Wilson, James O. (Department: 1623)

Drug, bio-affecting and body treating compositions

Designated organic active ingredient containing

Carbohydrate doai

C536S056000, C536S124000

Reexamination Certificate

active

06875756

ABSTRACT:
A method and a device for the continuous, single-step production of a homogenous solution of cellulose in hydrous aminoxides on the basis of cellulose and aqueous aminooxides, preferably N-methylmorpholino-N-oxide (NMMO), at temperatures in the range of from 50 to 130° C. under a vacuum and water evaporation. The cellulose and the NMMO are dosed separately to the device, mixed while sheared, the water is evaporated until the mixture is dissolved, the solution is homogenized and directly fed to the consumer via screw conveyors, pumps and filters.

REFERENCES:
patent: 5769335 (1998-06-01), Shutov
patent: 6153003 (2000-11-01), Lee et al.
patent: 4439149 (1996-05-01), None

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