Patent application number | Description | Published |
20090061280 | METHOD FOR PRODUCING -SO3H GROUP-CONTAINING FLUOROPOLYMER AND -SO3H GROUP-CONTAINING FLUOROPOLYMER - The present invention provides a novel production process by which unstable terminal groups can be sufficiently stabilized under mild conditions. The present invention is related to a method for producing an —SO | 03-05-2009 |
20100273088 | METHOD FOR PRODUCING -SO3H GROUP-CONTAINING FLUOROPOLYMER AND -SO3H GROUP-CONTAINING FLUOROPOLYMER - The present invention provides a novel production process by which unstable terminal groups can be sufficiently stabilized under mild conditions. The present invention is related to a method for producing an —SO | 10-28-2010 |
20110020728 | POLYELECTROLYTE AND PROCESS FOR PRODUCING THE POLYELECTROLYTE - The present invention provides an electrolyte having high conductivity even under high-temperature low-humidification conditions (e.g. at a temperature of 100 to 120° C. and a humidity of 20 to 50% RH) and thereby makes it possible to realize a higher performance fuel cell. The present invention is a fluoropolymer electrolyte having an equivalent weight (EW) of not less than 250 but not more than 700 and a proton conductivity of not lower than 0.10 S/cm as measured at a temperature of 110° C. and a relative humidity of 50% RH and comprising a COOZ group- or SO | 01-27-2011 |
20110159402 | STABILIZED FLUOROPOLYMER AND METHOD FOR PRODUCING SAME - The present invention provides a method for producing a stabilized fluoropolymer which comprises producing the stabilized fluoropolymer by subjecting a treatment target substance containing a sulfonic-acid-derived-group-containing fluoropolymer to a fluorination treatment, wherein the sulfonic-acid-derived-group-containing fluoropolymer is a fluoropolymer containing —SO | 06-30-2011 |
20120035329 | METHOD FOR PRODUCING STABILIZED FLUOROPOLYMER - The present invention is aimed to provide a highly-productive method for producing a stabilized fluoropolymer. The present invention relates to a method for producing a stabilized fluoropolymer, comprising the step of bringing a fluoropolymer to be treated into contact with a fluorinating agent to produce a stabilized fluoropolymer, while maintaining the concentration of hydrogen fluoride present in a reaction vessel at not higher than 1.0% by volume. | 02-09-2012 |
20120178017 | ELECTROLYTE EMULSION AND PROCESS FOR PRODUCING SAME - The present invention provides a fluoropolymer electrolyte material which has improved processability and which is easily produced. The electrolyte emulsion of the present invention comprises an aqueous medium and a fluoropolymer electrolyte dispersed in the aqueous medium. The fluoropolymer electrolyte has a monomer unit having an SO | 07-12-2012 |
20130041110 | STABILIZED FLUOROPOLYMER AND METHOD FOR PRODUCING SAME - The present invention provides a method for producing a stabilized fluoropolymer which comprises producing the stabilized fluoropolymer by subjecting a treatment target substance containing a sulfonic-acid-derived-group-containing fluoropolymer to a fluorination treatment, wherein the sulfonic-acid-derived-group-containing fluoropolymer is a fluoropolymer containing —SO | 02-14-2013 |
20130216937 | POLYELECTROLYTE AND PROCESS FOR PRODUCING THE POLYELECTROLYTE - The present invention provides an electrolyte having high conductivity even under high-temperature low-humidification conditions (e.g. at a temperature of 100 to 120° C. and a humidity of 20 to 50% RH) and thereby makes it possible to realize a higher performance fuel cell. The present invention is a fluoropolymer electrolyte having an equivalent weight (EW) of not less than 250 but not more than 700 and a proton conductivity of not lower than 0.10 S/cm as measured at a temperature of 110° C. and a relative humidity of 50% RH and comprising a COOZ group- or SO | 08-22-2013 |
20130225764 | FLUOROPOLYMER DISPERSION AND PROCESS FOR PRODUCING FLUOROPOLYMER DISPERSION - A method for producing a fluoropolymer dispersion where a fine particle containing a fluoropolymer is dispersed in an aqueous dispersion medium, the fluoropolymer having a sulfonic acid group, and the method including a polymerization reaction step of emulsion polymerizing a fluorovinyl ether derivative and a fluorine-containing ethylenic monomer to give a fluoropolymer precursor, a hydrolysis step of hydrolyzing, in an aqueous medium, —SO | 08-29-2013 |