DRY CELLULOSE FIBERS AND THE PROCESS OF MAKING THE SAME Russian patent published in 2017 - IPC D21H11/16 D21H15/08 C08J5/18 C08L1/02 

FIELD: chemistry.

SUBSTANCE: dry cellulose fibers contain at least 50 wt % of fibers having a length of up to 350 mcm and a diameter in the range of 100-500 nm, where the fibers do not contain additives, are not derivatized and are redispersible in water. A film of dry cellulose fibers containing the described fibers is shown where the film is water dispersible. Also described is a process for producing a dry film of cellulose fibers, comprising preparing a liquid slurry from the above-described cellulosic fibers obtained by multi-step highly refined wood or plant fibers and retaining more than 90% of the fibers on the forming section of the papermaking machine in which the fibers do not contain additives and are not derivatized. The film can be converted into powders or flakes for transport, storage or subsequent use.

EFFECT: creation of repeatedly water-dispersible fibers of fibrillated cellulose, obtained without the use of chemical additives and derivatization.

23 cl, 3 dwg, 5 tbl, 5 ex