Process for manufacturing viscose

Details Process for manufacturing viscose Process for manufacturing viscose

C - Chemistry, Metallurgy

08

B

260/215.2

C08B 9/00 (2006.01) C08B 1/08 (2006.01)

Patent

CA 1128504

Abstract of the Disclosure Process for manufacturing viscose solutions having good filterability and producing low amounts of sulfide gases during subsequent spinning; said process comprising treating cellulose with a first alkali metal hydroxide solution in a first alkalization step, freeing the alkalized cellulose from at least part of the excess hydroxide solution without pressing-off, and treating the cellulose with a second alkali metal hydroxide solution in a second alkalization step while maintaining the temperature of the reaction mixture at not more than 18°C.

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