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1. (WO2018142025) A METHOD TO CONVERT MECHANICAL PULP DERIVED WASTE MATERIAL INTO VALUE ADDED CELLULOSE PRODUCTS

Pub. No.:    WO/2018/142025    International Application No.:    PCT/FI2018/050071
Publication Date: Fri Aug 10 01:59:59 CEST 2018 International Filing Date: Fri Feb 02 00:59:59 CET 2018
IPC: D21C 11/00
D21C 9/00
D21H 13/08
Applicants: AALTO UNIVERSITY FOUNDATION SR
Inventors: SIXTA, Herbert
MA, Yibo
HUMMEL, Michael
Title: A METHOD TO CONVERT MECHANICAL PULP DERIVED WASTE MATERIAL INTO VALUE ADDED CELLULOSE PRODUCTS
Abstract:
According to an example aspect of the present invention, there is provided a process for the conversion of cellulosic waste material into a recycled cellulose product comprising the steps of cooking the waste material in a cooking liquor to remove lignin from the waste material and provide a delignified pulp,dissolving the delignified pulp in an ionic liquid to provide a spinning dope suitable for dry jet-wet spinning in an ionic liquid solution, and subjecting the spinning dope to a further processing step to provide a recycled cellulose product, said further step selected from the group of spinning cellulose fibers for use in textiles from the solution,extruding a film product for use in packaging,regenerating the dope as a hydrogel and regenerating the dope as an aerogel.