A method for dissolving cellulose and a cellulosic product obtained from a solution comprising dissolved cellulose

Marianna Vehviläinen (Inventor), Pertti Nousiainen (Inventor), Taina Kamppuri (Inventor), Maija Järventausta (Inventor)

Research output: PatentPatent application

Abstract

The present invention relates to a method for dissolving cellulose. The method comprises - introducing cellulosic raw material, - treating the cellulosic raw material in an enzymatic treatment process, - mixing the cellulosic raw material after the enzymatic treatment in an aqueous solution in order to obtain an aqueous intermediate product containing the cellulosic raw material of at least 3.5 wt.-%, alkali metal hydroxide between 3.5 wt.-% and 7 wt.-% and zinc salt, - freezing the intermediate product to a solid state, and - melting the frozen intermediate product. The present invention also relates to a cellulosic product obtained from a solution comprising dissolved cellulose.

Original languageEnglish
Patent numberEP2116557 A1
IPCD01F 2/02
Priority date6/05/08
Filing date6/05/08
Publication statusPublished - 11 Nov 2009
MoE publication typeNot Eligible

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