V.B Medicare Pvt. Ltd Patent applications |
Patent application number | Title | Published |
20100228020 | Novel Chlorination Reagent and a Novel Process for Chlorination of Sugars Using Thionyl Chloride - Preparation of chlorinating reagent or chlorination reaction itself for use in a reaction such as production of high intensity sweetener trichlorogalactosucrose (TGS) from partially protected sucrose, comprising reaction of dimethylformamide (DMF) with thionyl chloride or another sulphur containing inorganic acid chlorides including sulphuryl chloride is faced with a problem of prolific release of gaseous by-products, that at times may lead to violent explosion also. This problem is solved by innovative addition of solid powder inert to the constituents of the chlorination reaction mixture to the reaction, or by adding DMF to acid chloride solution in that order. The invention also leads to use of isolated solid Vilsmeier reagent being used for chlorination in a solvent other than DMF making it possible to avoid altogether problems arising from use of DMF which include irrecoverable loss in alkaline as well as acid conditions, interference in crystallization of TGS and the like. | 09-09-2010 |
20100168412 | Continuous Neutralizer Mixer Reactor and a Continuous Process for Quenching Chlorination Reaction Mixture in Production of Chlorinated Sucrose - An improved process of production of a chlorinated sugar is described comprising chlorination of a partially protected sugar, wherein quenching as well as neutralization of chlorinated reaction mass is carried out concurrently and continuously in a reactor which is a continuous mixer as well as quencher providing continuous mixing of chlorination reaction mixture and pH adjusting solution and also provides for continuous quenching and continuous removal of quenched chlorinated reaction mixture. | 07-01-2010 |
20100056773 | DECOLORIZATION OF PROCESS STREAMS BY CHEMICAL OXIDATION IN THE MANUFACTURE OF TRICHLOROGALACTOSUCROSE - A process is described in which decolorization of solutions or reaction mixtures containing trichlorogalactosucrose or 6-acetyl trichlorogalactosucrose is achieved described by bubbling ozone. The method can be used at various stages in the process of production and with or without a combination with other adsorbents for colour removal. | 03-04-2010 |
20090264640 | Recovery of dimethylformamide and other solvents from process streams of manufacture of trichlorogalactosucrose - This invention comprises an improved process for recovery and purification of DMF from an aqueous process stream containing DMF with or without inorganic impurities, particularly from process stream of a process of manufacture of the high intensity sweetener Trichlorogalactosucrose, by adsorption on an adsorbent having selective affinity towards dimethylformamide, followed by elution in pure form by eluting by an appropriate eluent, including methanol. | 10-22-2009 |
20090208747 | Novel Crystalline Methods and Novel Crystalline and Amorphous forms of Halogenated Sugars - Disclosed is crystalline 4,1′,6′Trichlorogalactosucrose (TGS) having enhanced storage stability, a mean particle size of about 5 microns or less, 90% particles being less than about 10 microns and the maximum particle size being more than twice the mean but less than about 35 microns; and a process for producing the same comprising gradual cooling of a saturated solution of TGS of a mixture of a a polar alcoholic solvent and a less polar organic solvent, the proportion of the said polar alcoholic solvent being within maintained within a range of about 3% to | 08-20-2009 |