Cellulose solution in water and NMMO

Details Cellulose solution in water and NMMO Cellulose solution in water and NMMO

1991-07-16

1993-02-23

Nutter, Nathan M.

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

Organic compounds

Carbohydrates or derivatives

536 57, 106168, 106178, 106198, C08B 1600, C08L 108, C08J 400

Patent

active

051891522

ABSTRACT:
A solution of cellulose in water and N-methylmorpholine-N-oxide (NMMO) containing 2 to 44% by weight cellulose is stabilized at 0.01 to 1%, preferably 0.1% H.sub.2 O.sub.2 and 0.01 to 2%, preferably 0.1% of an H.sub.2 O.sub.2 stabilizer, preferably oxalic acid or a salt thereof during formation of the solution and during heating to prevent discoloration of the cellulose and reduce the composition of NMMO.

REFERENCES:
patent: 4196282 (1980-04-01), Franks et al.
patent: 4246221 (1981-01-01), McCorsley, III
patent: 4290815 (1981-09-01), Henry
patent: 4426228 (1984-01-01), Brandner et al.
patent: 4634470 (1987-01-01), Kamide et al.

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