Patent application number | Description | Published |
20080269477 | Solvent System Based on Molten Ionic Liquids, Its Production and Use for Producing Regenerated Carbohydrates - A solution system for biopolymers in the form of carbohydrates based on a molten ionic liquid, additives optionally being contained in the solution system, is described. This solution system contains a protic solvent or a mixture of several protic solvents, and in the case where the protic solvent is solely water, this is present in the solution system in an amount of more than about 5 wt. %. Carbohydrates can be incorporated into the solution system, in particular in the form of starch, cellulose and derivatives thereof, and it can then be used for regeneration of the carbohydrates contained therein. A particularly advantageous process for the preparation of the solution system containing the carbohydrates and for the preparation of regenerated carbohydrates, in particular in the form of regenerated cellulose fibers, is moreover described. The invention accordingly also provides such spun fibers as are distinguished in that they are non-fibrillating. The invention offers in particular economic advantages over the systems of the prior art. | 10-30-2008 |
20080287684 | Method for Producing Ionic Liquids - The present invention describes a process for preparing ionic liquids (I) by reacting ionic liquids (II) whose anion is a halide with an acid (III), with the resulting hydrogen halide being scavenged by means of an amine and the resulting ammonium halide being able to be separated off. | 11-20-2008 |
20090020112 | METHOD FOR BREAKING DOWN CELLULOSE - The present invention describes a process for the degradation of cellulose by dissolving the cellulose in an ionic liquid and treating it at elevated temperature, if appropriate in the presence of water. | 01-22-2009 |
20090062524 | METHOD FOR BREAKING DOWN CELLULOSE IN SOLUTION - The present invention describes a process for the degradation of cellulose by dissolving the cellulose in an ionic liquid and treating it with an acid, if appropriate with addition of water. | 03-05-2009 |
20090187016 | METHOD FOR PRODUCING CELLULOSE ACETALS - The present invention describes a process for preparing acetals of polysaccharides, oligosaccharides or disaccharides by dissolving these in at least one ionic liquid and reacting them with a vinyl ether. The acetalated polysaccharides or oligosaccharides obtained in this way can be crosslinked by treatment with acid. The present invention also provides acetals of polysaccharides, oligosaccharides or disaccharides and also crosslinked polysaccharides or oligosaccharides. | 07-23-2009 |
20090250409 | PURIFICATION OF IONIC LIQUIDS - The invention relates to a process for purifying an ionic liquid, which comprises the steps (a) partial crystallization of the ionic liquid from its melt and (b) separation of the crystals from the residual melt. | 10-08-2009 |
20090281303 | PROCESS FOR SILYLATING CELLULOSE - The present invention describes a process for silylating polysaccharides, oligosaccharides or disaccharides or derivatives thereof by dissolving these in an ionic liquid and reacting them with a silylating agent. | 11-12-2009 |
20090326216 | PROCESS FOR ACYLATING CELLULOSE - The present invention describes a process for acylating polysaccharides, oligosaccharides or disaccharides or derivatives thereof by dissolving these in an ionic liquid and reacting them with a ketene, and also novel acylated polysaccharides, oligosaccharides or disaccharides or derivatives thereof. | 12-31-2009 |
20100029961 | DMC CATALYSTS, METHOD FOR THE PRODUCTION THEREOF AND USE THEREOF - The invention relates to a process for preparing DMC catalysts by reaction of cyanometalate compounds with metal salts, wherein the reaction is carried out in ionic liquids as solvents or suspension media. | 02-04-2010 |
20100048829 | IONIC LIQUIDS FOR SOLUBILIZING POLYMERS - The present invention relates to a liquid composition which comprises at least one polymer and at least one ionic liquid, the cations of which are derived from polycyclic amidine bases, and a process for isolating cellulose from cellulose-containing sources using at least one such ionic liquid. | 02-25-2010 |
20100108944 | Absorbent Article Comprising Water-Absorbing Material - The present disclosure relates to an absorbent structure for use in a diaper for babies and infants, a feminine hygiene article and/or an incontinence article, said absorbent structure comprising a water-absorbing material, the water-absorbing material being obtainable by a process comprising the steps of A) treating a particulate, non-surface-crosslinked, water-absorbing polymer with a mixture comprising an aqueous solvent and at least one salt of a transition metal and B) irradiating the polymer treated according to A) with UV radiation, and to a process for its production. | 05-06-2010 |
20100267596 | METHOD FOR IMPROVING THE HYDROLYSIS STABILITY OF IONIC LIQUIDS - The present invention relates to a method for improving the hydrolysis stability of an ionic liquid (IL), in which at least one tertiary amine or one quaternary ammonium compound different from the ionic liquid (IL) is added to an ionic liquid (IL). | 10-21-2010 |
20100297445 | PRODUCTION OF SPHERICAL PARTICLES FROM SOLUTIONS COMPRISING A WATER-MISCIBLE SOLVENT BY THE METHOD OF UNDERWATER PELLETIZATION - The present invention relates to a process for producing spherical particles of at least one material, which comprises the steps:
| 11-25-2010 |
20100297532 | PROCESS FOR WORKING UP IONIC LIQUIDS - The present invention relates to a process for the work-up of acidic or basic ionic liquids (IL) of the general formula (I), | 11-25-2010 |
20110178251 | Water Absorbing Material - The present invention relates to a water-absorbing material obtainable by a process comprising the steps of A) treating a particulate, non-surface-crosslinked, water-absorbing polymer with a mixture comprising an aqueous solvent and at least one salt of a transition metal and B) irradiating the polymer treated according to A) with UV radiation, to a process for its production and to articles comprising the water-absorbing material. | 07-21-2011 |
20120010334 | IONIC LIQUIDS FOR SOLUBILIZING POLYMERS - The present invention relates to a liquid composition which comprises at least one polymer and at least one ionic liquid, the cations of which are derived from polycyclic amidine bases, and a process for isolating cellulose from cellulose-containing sources using at least one such ionic liquid. | 01-12-2012 |
20120116068 | METHOD FOR BREAKING DOWN CELLULOSE IN SOLUTION - The present invention describes a process for the degradation of cellulose by dissolving the cellulose in an ionic liquid and treating it with an acid, if appropriate with addition of water. | 05-10-2012 |
20140213697 | 2,2',6,6'-TETRAMETHYL-4,4'-METHYLENEBIS(CYCLOHEXYLAMINE) AS HARDENER FOR EPOXY RESINS - The present invention relates to a curable composition which comprises epoxy resin, epoxy-group-bearing reactive diluent and the hardener 2,2′,6,6′-tetramethyl-4,4′-methylenebis(cyclohexylamine), curing thereof, and the cured epoxy resin obtainable therefrom, and the use of 2,2′,6,6′-tetramethyl-4,4′-methylenebis(cyclohexylamine) as a hardener for epoxy resins in curable compositions with epoxy-group-bearing reactive diluent. | 07-31-2014 |