Patent application number | Description | Published |
20090197167 | Fluorinated Additives For Lithium Ion Batteries - The usability of certain fluorinated organic compounds which have aromatic radicals, C═C double bonds, C═O groups or organosilicon groups as an additive for Li ion batteries is disclosed. | 08-06-2009 |
20090211449 | Method for separating gas - Gas mixtures containing HF, HCl or HBr and other constituents, in particular gas mixtures containing carboxylic acid fluorides, C(O)F | 08-27-2009 |
20090242840 | Reversible Water-Free Process for the Separation of Acid-Containing Gas Mixtures - Gas mixtures which comprise acids like HF, HCl and/or HBr and other constituents, especially gas mixtures which comprise or consist of carboxylic acid fluorides, C(O)F | 10-01-2009 |
20110009660 | Process for the removal of HF from HF containing organic carbonates - Mixtures comprising organic carbonates, such as carbonates not substituted by fluorine, but especially fluorosubstituted organic carbonates, which are depleted in HF can be obtained from respective mixtures with a higher HF content by a step of stripping such mixture with an inert gas. For example, a reaction mixture comprising fluoroethylene carbonate and HF can be treated in this way. The mixture comprising organic carbonate which is depleted in HF can be distilled to obtain highly purified organic carbonate. | 01-13-2011 |
20110160111 | Method for Removal of Contaminants - Fluorosubstituted organic carbonates, especially monofluoroethylene, difluoroethylene, trifluoroethylene, and tetrafluorofluoroethylene carbonates can be applied as water-removing agent or to remove other liquid or solid contaminants, for example, grease and dust. Preferably, transport tanks or storage tanks are treated which are used to store the respective fluorinated carbonates for use as additive of lithium ion batteries. | 06-30-2011 |
20110177693 | Reversible Water-Free Process for the Separation of Acid-Containing Gas Mixtures - Gas mixtures which comprise acids like HF, HCl or HBr and other constituents, especially gas mixtures which comprise or consist of carboxylic acid fluorides, C(O)F | 07-21-2011 |
20110233104 | Container containing fluorinated organic carbonates - A container containing a fluorinated organic carbonate and a gas atmosphere which contains a cover gas selected from the group consisting of a noble gas, e.g., argon, xenon, a gaseous fluorinated aliphatic carbon which is heavier than air and does not interfere with the fluorinated organic compound, SF | 09-29-2011 |
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 |
20120157695 | Process for the Distillative Purification of Fluoroethylene Carbonate - Crude fluoroethylene carbonate obtained by the fluorination of ethylene carbonate and elemental fluorine containing not more than 5% by weight of HF is purified by at least two subsequent distillation steps. The bulk of HF can be removed, if desired, in a preliminary HF removal step, e.g., by stripping, before performing the distillation. Further, if desired, a second HF removal step can be performed by contacting the crude mixture or the distillate obtained after the first distillation step with an adsorbent for HF, e.g., silica gel. The distillation can be performed batch wise. It is preferred to perform the distillation continuously. It yields purified fluoroethylene carbonate with an HF content of equal to or less than 30 ppm. The purified fluoroethylene carbonate can be applied as solvent additive for lithium ion batteries. | 06-21-2012 |
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 |