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

Marianna Vehvilainen; Pertti Nousiainen; Taina Kamppuri; Maija Järventausta

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

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

Tampere University of Technology (TUT)

Research output: Patent › Patent 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 language	English
Patent number	US2011112286 A1
IPC	C12P 19/04
Priority date	6/05/09
Filing date	6/05/09
Publication status	Published - 12 May 2011
MoE publication type	Not Eligible

1 Patent

A method for dissolving cellulose and a cellulosic product obtained from a solution comprising dissolved cellulose
Vehviläinen, M. (Inventor), Nousiainen, P. (Inventor), Kamppuri, T. (Inventor) & Järventausta, M. (Inventor), 11 Nov 2009, IPC No. D01F 2/02, European Patent Office (EPO), Patent No. EP2116557 A1, 6 May 2008, Priority date 6 May 2008, Priority No. EP20080397510
Research output: Patent › Patent

Cite this

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title = "Method for dissolving cellulose and a cellulosic product obtained from a solution comprising dissolved cellulose",

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.",

author = "Marianna Vehvilainen and Pertti Nousiainen and Taina Kamppuri and Maija J{\"a}rventausta",

year = "2011",

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TY - PAT

T1 - Method for dissolving cellulose and a cellulosic product obtained from a solution comprising dissolved cellulose

AU - Vehvilainen, Marianna

AU - Nousiainen, Pertti

AU - Kamppuri, Taina

AU - Järventausta, Maija

PY - 2011/5/12

Y1 - 2011/5/12

N2 - 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.

AB - 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.

M3 - Patent

M1 - US2011112286 A1

Y2 - 2009/05/06

ER -

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

Abstract

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Research output

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

Cite this