Patent application number | Description | Published |
20120070749 | Process for the preparation of 4-fluoro-4-R-5-R'-1,3-dioxolane-2-ones - The present invention concerns 4-fluoro-4-R-5-R′-1,3-dioxolane-2-ones, wherein R is an alkyl group and R′ is H or a C1 to C3 alkyl group, their manufacture, solvent mixtures for lithium ion batteries containing them and conductive salt solutions for lithium ion batteries, e.g. solutions containing LiPF | 03-22-2012 |
20120116111 | Process for the preparation of fluoroalkyl (fluoro)alkyl carbonates and carbamates - Fluoroalkyl alkyl carbonates and fluorosubstituted carbamates which are suitable as additives or solvents in lithium ion batteries are prepared from fluoroalkyl fluoroformates and the respective alcohol or amine. Methanol is the preferred alcohol, dimethylamine and diethylamine are preferred amines. Fluoromethyl methyl carbonate is the preferred compound to be produced. Fluoroalkyl fluoroformates can be prepared from aldehydes and carbonyl fluoride. | 05-10-2012 |
20120177987 | Composition of a Fluorinated Organic Carbonate and a Lewis Acid - A method for handling fluorinated organic carbonates such that degradation reactions are minimized or even completely suppressed and hence initial purity of fluorinated organic carbonates is essentially maintained during handling. Compositions comprising a fluorinated organic carbonate with improved stability against degradation reactions. The compositions comprise equal to or less than 500 ppm of a Lewis acid. | 07-12-2012 |
20120209010 | Method for the Manufacture of Fluorinated Ethylene Carbonates - Difluoroethylene carbonate, trifluoroethylene carbonate and tetrafluoroethylene carbonate are synthesized from dichloroethylene carbonate, trichloroethylene carbonate and tetrachloroethylene carbonate with fluorinating agents, e.g. alkali metal fluorides, antimony fluorides and especially the HF adducts of amines The fluorinated carbonates are suitable as additives in lithium ion batteries. | 08-16-2012 |
20120214043 | Lithium sulfur battery - A lithium sulfur battery comprising an electrolyte solvent which comprises at least one fluorosubstituted compound is described. Preferred fluorosubstituted compounds which are predominantly solvents are notably selected from the group consisting of fluorosubstituted carboxylic acid esters, fluorosubstituted carboxylic acid amides, fluorosubstituted fluorinated ethers, fluorosubstituted carbamates, fluorosubstituted cyclic carbonates, fluorosubstituted acyclic carbonates, fluorosubstituted ethers, perfluoroalkyl phosphoranes, fluorosubstituted phosphites, fluorosubstituted phosphates, fluorosubstituted phosphonates, and fluorosubstituted heterocycles. Monofluoroethylene carbonate, cis-difluoroethylene carbonate, trans-difluoroethylene carbonate, 4,4-difluoroethylene carbonate, trifluoroethylene carbonate, tetrafluoroethylene carbonate, 4-fluoro-4-methyl-1,3-dioxolane-2-one, 4-fluoro-4-ethyl-1,3-dioxolane-2-one, 2,2,2-trifluoroethyl-methyl carbonate, 2,2,2-trifluoroethyl-fluoromethyl carbonate are preferred. The solvent may further comprise a non-fluorinated solvent, e.g., ethylene carbonate, a dialkyl carbonate, or propylene carbonate. Use of such fluorinated compound as additive for such batteries and specific electrolyte solutions. | 08-23-2012 |
20120253058 | Manufacture of difluoroethylene carbonate, trifluoroethylene carbonate and tetrafluoroethylene carbonate - Difluoroethylene carbonate, trifluoroethylene and tetrafluoroethylene carbonate are produced by the reaction between elemental fluorine and ethylene carbonate or fluorinated ethylene carbonates with a lower degree of fluorination. | 10-04-2012 |
20140045078 | LITHIUM AIR BATTERY CELL - A lithium-air battery cell with an electrolyte composition comprising LiPO | 02-13-2014 |
20140342221 | PROCESS FOR THE MANUFACTURE OF 1, 1'-DIFLUOROSUBSTITUTED DIALKYL CARBONATES, ISOMERS THEREOF AND ELECTROLYTE COMPOSITIONS CONTAINING THEM - Fluoroalkyl alkyl carbonates which are suitable as additives or solvents in lithium ion batteries are prepared from fluoroalkyl fluoroformiates and an aldehyde, preferably formaldehyde and acetaldehyde. 1,1′-difluoromethyl carbonate and 1,1′-di-fluorodiethylcarbonate are the preferred compounds prepared by the process of the present invention. | 11-20-2014 |