The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 05, 2013
Filed:
Sep. 03, 2008
John Holbrey, Belfast, GB;
Markus Fanselow, Belfast, GB;
Kenneth Richard Seddon, Belfast, GB;
Lauret Vanoye, Belfast, GB;
Anna Zheng, Belfast, GB;
John Holbrey, Belfast, GB;
Markus Fanselow, Belfast, GB;
Kenneth Richard Seddon, Belfast, GB;
Lauret Vanoye, Belfast, GB;
Anna Zheng, Belfast, GB;
Petroliam Nasional Berhard (Petronas), Kuala Lumpur, MY;
Abstract
A process is described for the preparation of water-soluble cellulose hydrolysis products, which comprises admixing cellulose with an ionic liquid capable of solvating or dissolving at least some of the cellulose, said ionic liquid being a compound comprised solely of cations and anions and which exists in a liquid state at a temperature at or below 150° C., the cations in said ionic liquid having the general formula (I), in which Z represents a nitrogen or phosphorus atom, Rrepresents a methyl or ethyl group, each of Rand R, which may be the same or different, is selected from Calkyl, optionally-substituted benzyl, optionally-substituted phenyl, and Ccycloalkyl, and Rrepresents Calkyl, optionally-substituted benzyl, optionally-substituted phenyl or Ccyclohexyl; in which the optional substituents on a benzyl or phenyl ring are one, two or three substituents selected from Calkyl or alkoxy groups, halogen atoms and nitro groups; and treating the resulting solvate or solution with an acid in the presence of water, said acid having a pKa in water of less than 2 at 25° C.