| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 562125000 | Sulfinic or sulfenic acids or salts thereof (i.e., compounds containing the sulfinate group, -S(=O)O-, or the sulfenate group, -S-O-, wherein the single bonded oxygen is bonded directly to hydrogen, or to a group IA or group IIA light metal or to substituted or unsubstituted ammonium) | 6 |
| 20120197039 | METHOD FOR PREPARING TRIFLUOROMETHANESULPHINIC ACID - The present invention relates to a method for preparing a highly pure trifluoromethanesulphinic acid. The method of the invention for preparing a highly pure trifluoromethanesulphinic acid, starting from an aqueous mixture comprising a trifluoromethanesulphinic acid salt, a trifluoroacetic acid salt and saline impurities resulting from the method for preparing same, is characterized in that said mixture is subjected to the following operations:- acidification such that the trifluoroacetic acid salt and the triflinic acid salt are released in an acid form,- separation of the trifluoroacetic acid and trifluoromethanesulphinic acid by distillation enabling the trifluoroacetic acid to be recovered at the top of the distillation and the trifluoromethanesulphinic acid to be recovered at the bottom of the distillation,- separation by distillation of the trifluoromethanesulphinic acid present in the distillation residue previously obtained. | 08-02-2012 |
| 20130023695 | Preparation Method for Perfluoroalkane Sulfinate - In a method for obtaining an alkali metal perfluoroalkanesulfinate by reacting a perfluoroalkanesulfonyl halide with a sulfur-containing reducing agent in the presence of water, a reaction liquid containing the alkali metal sulfinate obtained after the reaction is concentrated till a specific concentration, thereby inorganic salts, which are impurities in the solution, are precipitated and removed, and a filtrate after removing the inorganic salts is subjected to an operation such as concentration and drying, thereby obtaining the target alkali metal perfluorosulfinate with a high purity and a good operability. Furthermore, an organic solvent for extraction becomes unnecessary. Therefore, it is possible to greatly reduce wastes. | 01-24-2013 |
| 20130253220 | PARTIALLY FLUORINATED SULFINIC ACID MONOMERS AND THEIR SALTS - Described herein is a composition according to formula I or its precursor, formula II: CX | 09-26-2013 |
| 20130253221 | FLUORINATED OLIGOMERS HAVING PENDANT BROMINE-CONTAINING MOIETIES - Described herein is an oligomer having a pendant bromine-containing moiety according to formula II and/or formula III; and combinations thereof; wherein X | 09-26-2013 |
| 20130267732 | PREPARATION OF PERFLUOROVINYL ETHER SULFINIC ACIDS AND THEIR SALTS - There is provided a process for preparing a perfluorovinyl ether sulfinate, comprising: a) providing a perfluorovinyl ether sulfonyl halide; and (b) reducing the perfluorovinyl ether sulfonyl halide with a reducing agent in an organic protic solvent. | 10-10-2013 |
| 20140088322 | ALLYL ETHER-TERMINATED FLUOROALKANESULFINIC ACIDS, SALTS THEREOF, AND A METHOD OF MAKING THE SAME - Described herein are allyl ether-terminated fluoroalkylsulfinic acids and salts thereof and methods of making. | 03-27-2014 |
