| Patent Number |
Title Of Patent |
Date Issued |
| 6987181 |
Oxidized polymeric carbohydrates and products made thereof |
January 17, 2006 |
| The present invention relates to a polysaccharide having functional groups, wherein said groups are aldehyde groups formed at positions C2 and/or C3 as well as at position C6 of the anhydroglucose units of the polysaccharide chain. Preferably the polysaccharide is a cellulosic fibrou |
| 6936710 |
Process for oxidizing primary alcohols |
August 30, 2005 |
| Primary hydroxyl groups in a substrate having both primary and secondary hydroxyl groups can be selectively oxidized to carbaldehyde and/or carboxyl groups by contacting the substrate with a cyclic nitroxyl compound in the presence of a peroxosulfate as a co-oxidant and by carrying o |
| 6916466 |
Coupling of modified cyclodextrins to fibers |
July 12, 2005 |
| Cyclodextrins and other ecapsulating oligosaccharides can be bound to fibrous and/or polysaccharidic carriers by ionic bonds. The ionic bonds can be produced by introducing cationic or anionic groups into the cyclodextrins, and where appropriate, by introducing oppositely charged gro |
| 6875861 |
Process for producing nitrosonium ions |
April 5, 2005 |
| A process for producing nitrosonium ions is described, in which a nitroxyl compound such as TEMPO is oxidized using an oxidizing agent in the presence of a complex of a transition metal such as Mn, Fe, Cu, and a complexing agent such as a polyamine. The process is useful for the oxid |
| 6849156 |
Cationic fibers |
February 1, 2005 |
| A cationic cellulosic fibre containing between 1 and 30 cationic groups and between 0.1 and 20 aldehyde groups per 100 anhydroglucose units is a suitable basis for producing paper and tissue products without the necessity of using non-biodegradable cationic polymers as wet strength a |
| 6824645 |
Oxidized cellulose-containing fibrous materials and products made therefrom |
November 30, 2004 |
| The present invention relates to a cellulose-containing fibrous material, wherein hydroxy groups were oxidized at the C(6) of glucose units of the cellulose into aldehyde and/or carboxy groups, a paper or nonwoven (product) made therefrom, in particular tissue (products) and a process |
| 6770755 |
Process of oxidizing primary alcohols |
August 3, 2004 |
| In a new process for oxidizing a primary and/or secondary alcohol, an oxidizing agent is used in the presence of a di-tertiary-alkyl nitroxyl, in an aqueous reaction medium at a pH of below 7. The di-tertiary-alkyl nitroxyl is especially 4-hydroxy-TEMPO, and the process is particularly |
| 6765042 |
Acidic superabsorbent polysaccharides |
July 20, 2004 |
| A process is disclosed for producing an acidic superabsorbent polysaccharide derivative, comprising the steps of: (a) crosslinking at least one polysaccharide containing acidic groups, such as carboxymethyl cellulose and/or 6-carboxy starch, with a crosslinking agent to produce a gel |
| 6716976 |
Process for selective oxidation of cellulose |
April 6, 2004 |
| A process for oxidizing cellulose, in which a nitroxyl compound such as TEMPO is oxidized using an oxidizing agent in the presence of a complex of a transition metal such as Mn, Fe, Cu, and a complexing agent such as a polyamine, or an oxidative enzyme, and the resulting nitrosonium ion |
| 6635755 |
Oxidized polymeric carbohydrates and products made thereof |
October 21, 2003 |
| The present invention relates to a polysaccharide having functional groups, wherein said groups are aldehyde groups formed at positions C2 and/or C3 as well as at position C6 of the anhydroglucose units of the polysaccharide chain. Preferably the polysaccharide is a cellulosic fibrou |
| 6608229 |
Oxidation of polysaccharides with nitroxyls |
August 19, 2003 |
| A simplified process for oxidizing starch and other polysaccharides in an aqueous solution or suspension using hypochlorite in the presence of a catalytic amount of a nitroxyl compound is described. The oxidation is process is bromide-free and is carried out at a pH between 7 and 8.3 and |
| 6538132 |
Process for regenerating periodic acid |
March 25, 2003 |
| The invention pertains to a process for the regeneration and recovery of periodate from a spent iodate solution, by reacting the iodate with at least an equimolar amount of hypohalite, and carrying out the recovery in the presence of a water-miscible organic solvent or potassium ions or |
| 6518419 |
Process for selective oxidation of primary alcohols |
February 11, 2003 |
| Primary alcohols, especially in carbohydrates, can be selectively oxidized to aldehydes and carboxylic acids in a low-halogen process by using a peracid in the presence of a catalytic amount of a di-tertiary-alkyl nitroxyl (TEMPO) and a catalytic amount of halide. The halide is prefe |
| 6331619 |
Superabsorbent material and method for producing said material |
December 18, 2001 |
| A superabsorbent polysaccharide derivative is obtained by oxidation of the polysaccharide to the extent that the derivative contains 0.2-0.3 carboxyl group per monosaccharide unit and cross-linking the oxidized polysaccharide with 0.0001-0.2 equivalent of cross-linking agent per mono |
| 6274186 |
Method for cleaning items in particular filters, used during foodstuff production |
August 14, 2001 |
| The invention relates to a method for cleaning apparatus used during the production of foodstuffs, in particular the filtration thereof, wherein this apparatus is contacted after use with a cleaning system based on the combination of a cyclic nitroxyl compound and a hypohalite. |
| 5667690 |
Process for removing noxious compounds |
September 16, 1997 |
| A process is described for removing noxious compounds such as hydrocarbons which may or may not contain halogen and/or may or may not be aromatic, from solids (soil), water or gas, according to which process the solid, the water or the gas is treated with a complex of a transition metal |
