Process for producing highly homogeneous cellulose solution

Details Process for producing highly homogeneous cellulose solution Process for producing highly homogeneous cellulose solution

D - Textiles, Paper

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D01F 2/02 (2006.01) C08B 1/00 (2006.01) C08J 3/09 (2006.01) C08J 3/11 (2006.01) C08L 1/02 (2006.01) C08L 29/04 (2006.01)

Patent

CA 2400709

Disclosed is a process for producing a highly homogeneous cellulose solution, in which a mixture of powdered cellulose with polyvinyl alcohol powder is fed in conjunction with concentrated liquid NMMO into a kneader or an extruder to produce the highly homogeneous cellulose solution. Alternatively, a kneader may be used to produce a swollen cellulose/polyvinyl alcohol paste, which is then subsequently moved into an extruder to produce the highly homogeneous cellulose solution. The cellulose solution is extruded through a nozzle into a cellulose fiber. The process is advantageous in that the highly homogeneous cellulose solution can be rapidly and inexpensively produced because the cellulose solution is produced without a vacuum distillation step or separate swelling step, and formation of fibrils is prevented, and thereby cellulose fibers with excellent flexibility and strength are produced from the cellulose solution.

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