Class / Patent application number | Description | Number of patent applications / Date published |
528401000 | FROM FLUORINE-CONTAINING REACTANT | 7 |
20080221301 | Reduced Fuming Fluoropolymer - The present invention relates to the reduction of oligomer content of melt-processible fluoropolymer so that the fluoropolymer has at least 25 ppm less oligomer than the as-polymerized fluoropolymer. | 09-11-2008 |
20100036086 | ENERGY-PRODUCING MATERIAL - An energy-producing material which comprises a chemically uniform polymer material whose monomer units contain an electron donor and an electron acceptor, wherein the stoichiometric ratio of electron donor to electron acceptor is ≦1, is proposed. | 02-11-2010 |
20120059144 | Process for the purification of polyol PFPE derivatives - A process for purifying a polyol(per)fluoropolyether derivative [polyol (P)] from a mixture (M) of hydroxyl(per)fluoropolyether derivatives, such polyol (P) comprising one or more hydroxyl(per)fluoropolyether derivatives [PFPEs (OH)] comprising at least one (per)fluoropolyoxyalkylene chain (chain R | 03-08-2012 |
528402000 | Fluorine reactant contains a heterocyclic ring having a -C-O-C- group as part of the hetero ring atoms | 4 |
20080255337 | NOVEL CROSSLINKABLE FLUORINE-CONTAINING ETHER COMPOUND - A crosslinkable fluorine-containing compound, which is an adduct compound having a crosslinkable group, wherein the adduct compound is an adduct of a fluorine-containing compound having, per molecule, 2 or more terminal fluorine-containing vinyl groups each directly bonded to an oxygen atom, and a compound having 2 or more groups represented by —XH, where X represents an oxygen atom or a sulfur atom. | 10-16-2008 |
20090030175 | Process for producing fluoropolymer by ring-opening polymerization of fluorinated epoxy compound - There is provided a polymer having electrical/optical functions attributed to the stability of a C—F bond in addition to chemical stability by efficiently polymerizing a fluorinated epoxy compound. A process for producing a fluoropolymer having two or more units of a repeating unit represented by the following formula (2), which comprises ring-opening polymerization of a fluorinated epoxy compound represented by the following formula (1) in the presence of a trialkylaluminum and a salt having an organic cation as a counter cation: | 01-29-2009 |
20100056752 | Fluorinated 1,3-Dioxolane Compounds, Fluorinated Polymers of the Compounds, and Optical or Electrical Materials Comprising the Polymers - A production method of fluorinated compounds, for producing a compound represented by formula (3) in a fluorine-based solution in a flow of fluorine gas after reaction of at least one type of compounds represented by formula (1) and at least one type of compounds represented by formula (2). Similarly, fluorinated compounds represented by formula (4) prepared by the fluorination of compounds obtained by the reaction of formula (1) and formula (2)′. The fluorinated polymers obtained by the polymerizations of formula (3) and (4) compounds are useful as an optical or electrical materials. | 03-04-2010 |
20110092665 | Polymerisation of Hexafluoropropylene Oxide - Process for the oligomerization of hexafluoropropylene oxiyde (HFPO) in which the sum of the dimers, trimers, tetramers, pentamers and hexamers represents less than 20% of the weight of the polymerized HFPO, the oligomers other than the dimers, trimers, tetramers, pentamers and hexamers (the remaining oligomers) having an average molecular weight ranging between 1100 and 4000 g/mol, characterized in that the process comprises the steps of contacting hexafluoropropylene oxide (HFPO) at a temperature between −30° C. to +50° C. with a catalyst system selected from potassium fluoride and di-, tri- or tetraethyleneglycol-dimethylether in the presence of a solvent which is selected from perfluorinated aliphatic or aromatic hydrocarbon with more than 3 and less than 12C-atoms and optionally a polar group but not comprising chlorine or bromine partially fluorinated aliphatic or aromatic hydrocarbon with more than 3 and less than 12C-atoms and optionally a polar group but not comprising chlorine or bromine at a pressure of less than 3 bars by controlled monomer addition continuous feeding or by adding the monomer in one or two portions (shots). | 04-21-2011 |