| Patent application number | Description | Published |
|---|
| 20090247737 | METHOD FOR THE PRODUCTION OF SUCRALOSE - The present invention provides a method for producing sucralose from a feed stream including a sucrose-6-acylate in a reaction vehicle. The method includes:
| 10-01-2009 |
| 20090259034 | REMOVAL OF ACIDS FROM TERTIARY AMIDE SOLVENTS - A method of removing a carboxylic acid from a liquid that contains a tertiary amide solvent includes a step of contacting the liquid with an extraction medium comprising an amine. The amine is immiscible with both water and the tertiary amide solvent, and the contacting step forms a de-acidified phase containing the tertiary amide solvent and a phase containing the extraction medium and the carboxylic acid. Both the liquid that contains the tertiary amide solvent and the de-acidified phase may also contain a sucrose-6-acylate. | 10-15-2009 |
| 20090259036 | EXTRACTION OF LESS POLAR IMPURITIES FROM SUCRALOSE CONTAINING AQUEOUS FEED STREAMS - A process for the purification of sucralose containing aqueous feed streams is disclosed. The process comprises the step of extracting an aqueous feed stream comprising sucralose and impurities less polar than sucralose, such as tetrachloro saccharides, with an organic solvent that is immiscible with water, such as ethyl acetate. In this step, the mass ratio of organic solvent to aqueous feed stream is in the range of 0.4 to 0.9. Greater than 50% of the sucralose and greater than 95% of the tetrachloro saccharide impurities are extracted into the organic extract. The organic extract is back extracted with water and the resulting aqueous extract recycled to the initial extraction step. | 10-15-2009 |
| 20090264633 | METHOD FOR THE PRODUCTION OF SUCRALOSE - The present invention provides a method for producing sucralose from a feed stream resulting from the chlorination of a sucrose-6-acylate in a reaction vehicle. The feed stream includes a sucralose-6-acylate, the reaction vehicle, water, and salts. The salts include one or more selected from the group consisting of alkali metal chlorides, alkaline earth metal chlorides and ammonium chloride. The method includes:
| 10-22-2009 |
| 20090281295 | CRYSTALLIZATION OF SUCRALOSE FROM SUCRALOSE-CONTAINING FEED STREAMS - A process for the purification of sucralose in sucralose-containing feed streams is disclosed. The process includes multiple liquid-liquid extraction steps; optionally, a concentration step; multiple crystallization steps; optionally, a chromatography step; and various recycle steps. | 11-12-2009 |
| 20090299055 | Purification of Sucralose Containing Feed Streams for Sucralose Crystallization - A process for the recovery of a carbohydrate selected from sucralose and sucralose-6-esters from an aqueous feed stream is disclosed. The process comprises extracting the feed stream with an organic solvent, such as ethyl acetate, back extracting the resulting carbohydrate-containing organic extract with an aqueous solvent, and either crystallizing the carbohydrate from the organic solvent or replacing the organic solvent with water and crystallizing the carbohydrate from water. The process results in an increased overall yield of the carbohydrate. | 12-03-2009 |
| 20100081803 | EFFECT OF CARBOHYDRATE CONCENTRATION ON SUCRALOSE EXTRACTION EFFICIENCY - A process for the purification of aqueous feed streams containing sucralose comprises:
| 04-01-2010 |
