Patent application number | Description | Published |
20090124754 | PROCESS FOR PRODUCING FLUOROPOLYMERS - An emulsion polymerization process for the production of fluoropolymers is disclosed wherein a combination of at least two fluorosurfactants is employed as dispersants. At least one fluorosurfactant is a perfluoroalkyl or perfluoroalkoxy sulfinate. At least one other fluorosurfactant is a perfluoropolyether having at least one endgroup selected from the group consisting of carboxylic acid, a slat thereof, sulfonic acid and a salt thereof. | 05-14-2009 |
20090124755 | PROCESS FOR PRODUCING FLUOROPOLYMERS - An emulsion polymerization process for the production of fluoropolymers that contain polymerized units of tetrafluoroethylene is disclosed wherein a perfluoroaliphatic sulfinate is employed as dispersant. | 05-14-2009 |
20090186997 | PROCESS FOR PRODUCING FLUOROELASTOMERS - An emulsion polymerization process for the production of fluoroelastomers is disclosed wherein at least one fluorosurfactant is employed as dispersant, said fluorosurfactant being a fluoroalkylphosphoric acid ester of the formula X—Rf—(CH | 07-23-2009 |
20100120980 | FLUOROALKYL ETHER SULFONATE SURFACTANTS - A compound of Formula (1) | 05-13-2010 |
20100121025 | FLUOROSULFONATES - A process comprising polymerizing in an aqueous medium at least one fluorinated olefin monomer other than vinylidene fluoride in the presence of a compound of formula (1): | 05-13-2010 |
20110245135 | FLUOROSULFONATES - A process comprising polymerizing in an aqueous medium at least one fluorinated olefin monomer other than vinylidene fluoride in the presence of a compound of formula (1): | 10-06-2011 |
20110257423 | PROCESS FOR PRODUCING FLUOROELASTOMERS - An emulsion polymerization process for the production of fluoroelastomers is disclosed wherein at least one fluorosurfactant is employed as dispersant, said fluorosurfactant being a fluoroalkylphosphoric acid ester of the formula X—Rf—(CH | 10-20-2011 |
20150073111 | FLUOROELASTOMERS HAVING SECONDARY CYANO GROUP CURE SITES - This invention pertains to fluoroelastomers comprising copolymerized units of vinylidene fluoride, at least one other fluoroolefin and a cure site monomer having a secondary cyano group, as well as cured fluoroelastomer compositions made therefrom. It has been surprisingly discovered that fluoroelastomers that contain a cure site monomer having a secondary cyano group contain much less gel than do similar fluoroelastomers that employ a cure site monomer having a primary cyano group. Furthermore cured (i.e. crosslinked) fluoroelastomer compositions that contain a fluoroelastomer having secondary cyano groups have a better (i.e. lower) compression set than do similar cured fluoroelastomer compositions that contain a fluoroelastomer having primary cyano groups. | 03-12-2015 |