Process for the preparation of water-soluble cellulose hydrolysis products.

John Holbrey (Inventor), Markus Fanselow (Inventor), Kenneth Richard Seddon (Inventor), Laurent Vanoye (Inventor), Anna. Zheng (Inventor)

Research output: Patent

Abstract

The title process comprises admixing cellulose with an ionic liq. capable of solvating or dissolving at least some of the cellulose, the ionic liq. being a compd. comprised solely of cations and anions (e.g., 1-ethyl-3-methylimidazolium sulfate) and which exists in a liq. state at a temp. at or below 150°, the cations in the ionic liq. having the general formula R1Z(R2)(R3)R4: in which Z represents a nitrogen or phosphorus atom, R1 represents a Me or Et group, each of R2 and R3, which may be the same or different, is selected from C4-8alkyl, optionally-substituted benzyl, optionally-substituted Ph, and C5-7cycloalkyl, and R4 represents C1-8 alkyl, optionally-substituted benzyl, optionally-substituted Ph or C5-7cyclohexyl; in which the optional substituents on a benzyl or Ph ring are one, two or three substituents selected from C1-4alkyl or alkoxy groups, halogen atoms and nitro groups; and treating the resulting solvate or soln. with an acid in the presence of water, the acid having a pKa in water of less than 2 at 25°. [on SciFinder(R)]
Original languageEnglish
Patent numberWO2009030950A1
Publication statusPublished - 12 Mar 2009

Fingerprint

Cellulose
Cations
Hydrolysis
Atoms
Halogens
Acids
Water
Phosphorus
Sulfates
Anions
Nitrogen
1-ethyl-3-methylimidazolium
alkoxyl radical

Bibliographical note

CAPLUS AN 2009:292019(Patent)

Keywords

  • water soluble cellulose hydrolysis product ethylmethylimidazolium sulfate

Cite this

Holbrey, J., Fanselow, M., Seddon, K. R., Vanoye, L., & Zheng, A. (2009). Process for the preparation of water-soluble cellulose hydrolysis products. (Patent No. WO2009030950A1).
Holbrey, John (Inventor) ; Fanselow, Markus (Inventor) ; Seddon, Kenneth Richard (Inventor) ; Vanoye, Laurent (Inventor) ; Zheng, Anna. (Inventor). / Process for the preparation of water-soluble cellulose hydrolysis products. Patent No.: WO2009030950A1.
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author = "John Holbrey and Markus Fanselow and Seddon, {Kenneth Richard} and Laurent Vanoye and Anna. Zheng",
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Holbrey, J, Fanselow, M, Seddon, KR, Vanoye, L & Zheng, A 2009, Process for the preparation of water-soluble cellulose hydrolysis products., Patent No. WO2009030950A1.

Process for the preparation of water-soluble cellulose hydrolysis products. / Holbrey, John (Inventor); Fanselow, Markus (Inventor); Seddon, Kenneth Richard (Inventor); Vanoye, Laurent (Inventor); Zheng, Anna. (Inventor).

Patent No.: WO2009030950A1.

Research output: Patent

TY - PAT

T1 - Process for the preparation of water-soluble cellulose hydrolysis products.

AU - Holbrey, John

AU - Fanselow, Markus

AU - Seddon, Kenneth Richard

AU - Vanoye, Laurent

AU - Zheng, Anna.

N1 - CAPLUS AN 2009:292019(Patent)

PY - 2009/3/12

Y1 - 2009/3/12

N2 - The title process comprises admixing cellulose with an ionic liq. capable of solvating or dissolving at least some of the cellulose, the ionic liq. being a compd. comprised solely of cations and anions (e.g., 1-ethyl-3-methylimidazolium sulfate) and which exists in a liq. state at a temp. at or below 150°, the cations in the ionic liq. having the general formula R1Z(R2)(R3)R4: in which Z represents a nitrogen or phosphorus atom, R1 represents a Me or Et group, each of R2 and R3, which may be the same or different, is selected from C4-8alkyl, optionally-substituted benzyl, optionally-substituted Ph, and C5-7cycloalkyl, and R4 represents C1-8 alkyl, optionally-substituted benzyl, optionally-substituted Ph or C5-7cyclohexyl; in which the optional substituents on a benzyl or Ph ring are one, two or three substituents selected from C1-4alkyl or alkoxy groups, halogen atoms and nitro groups; and treating the resulting solvate or soln. with an acid in the presence of water, the acid having a pKa in water of less than 2 at 25°. [on SciFinder(R)]

AB - The title process comprises admixing cellulose with an ionic liq. capable of solvating or dissolving at least some of the cellulose, the ionic liq. being a compd. comprised solely of cations and anions (e.g., 1-ethyl-3-methylimidazolium sulfate) and which exists in a liq. state at a temp. at or below 150°, the cations in the ionic liq. having the general formula R1Z(R2)(R3)R4: in which Z represents a nitrogen or phosphorus atom, R1 represents a Me or Et group, each of R2 and R3, which may be the same or different, is selected from C4-8alkyl, optionally-substituted benzyl, optionally-substituted Ph, and C5-7cycloalkyl, and R4 represents C1-8 alkyl, optionally-substituted benzyl, optionally-substituted Ph or C5-7cyclohexyl; in which the optional substituents on a benzyl or Ph ring are one, two or three substituents selected from C1-4alkyl or alkoxy groups, halogen atoms and nitro groups; and treating the resulting solvate or soln. with an acid in the presence of water, the acid having a pKa in water of less than 2 at 25°. [on SciFinder(R)]

KW - water soluble cellulose hydrolysis product ethylmethylimidazolium sulfate

M3 - Patent

M1 - WO2009030950A1

ER -

Holbrey J, Fanselow M, Seddon KR, Vanoye L, Zheng A, inventors. Process for the preparation of water-soluble cellulose hydrolysis products. WO2009030950A1. 2009 Mar 12.