Patent application number | Description | Published |
20080262177 | Process for producing fluoroelastomers - A novel emulsion polymerization process for the production of fluoroelastomers is disclosed wherein the dispersing agent is a phosphate ester anionic surfactant of the formula [CH | 10-23-2008 |
20080293891 | Process for coagulating fluoroelastomers - In a process for the manufacture of fluoroelastomers, a water-soluble polymeric coagulant is employed that is an aqueous solution of polyethyleneimine or its copolymers. | 11-27-2008 |
20090093591 | Processing aid for melt-extrudable polymers - An extrudable composition comprising a non-fluorinated, melt processable host polymer and from about 25 parts per million by weight to about 50% by weight, based on total weight of said extrudable composition, of a fluoropolymer consisting essentially of copolymerized units of from 45 to 95 mole percent, based on total weight of said fluoropolymer, of tetrafluoroethylene (TFE) and from 5 and 55 mole percent, based on total weight of said fluoropolymer, of 3,3,3-trifluoropropylene (TFP). | 04-09-2009 |
20090197028 | Fluoropolymers of tetrafluoroethylene and 3,3,3-trifluoropropylene - Copolymer comprising at least 50 mol percent up to 85 mol percent tetrafluoroethylene (TFE), from 10-35 mol percent 3,3,3-trifluoropropylene (TFP), and from 0.5-15 mol percent of a fluorinated ethylenically unsaturated monomer of the formula RCF═CR | 08-06-2009 |
20100069591 | PROCESS FOR COAGULATING FLUOROELASTOMERS - In a process for the manufacture of fluoroelastomers, a water-soluble polymeric coagulant is employed that is an aqueous solution of polyethylene oxide homopolymer or copolymer having a viscosity average molecular weight of 500,000 or greater. | 03-18-2010 |
20120190798 | CURABLE FLUOROELASTOMER COMPOSITIONS - Disclosed herein is a curable composition comprising a curable fluoroelastomer, a curative and an acid acceptor selected from the group consisting of a hydrous bismuth oxide nitrate compound and bismuth oxide. Cured articles made therefrom are resistant to volume swell in acids, coolant and in biofuel. | 07-26-2012 |
20130053519 | ACID RESISTANT FLUOROELASTOMER COMPOSITIONS - Disclosed herein is a curable composition comprising a peroxide curable fluoroelastomer, an organic peroxide, a multifunctional coagent and an acid acceptor selected from the group consisting of carboxylic acid salts of bismuth and a bismuth oxycarboxylate. Cured articles made therefrom are resistant to volume swell in acids and in biodiesel fuel and said cured articles exhibit good heat resistance. | 02-28-2013 |
20130158154 | COAGENT FOR FREE RADICAL CURING FLUOROELASTOMERS - Disclosed herein are curable compositions comprising a free radical curable fluoroelastomer, a free radical generating compound and an unsaturated metal compound coagent. Such compositions cure well, exhibit good (i.e. low) compression set resistance and process well (i.e. have reduced polymer viscosity compared to similar compositions not containing the unsaturated metal compound coagent). | 06-20-2013 |
20130158197 | POLYHYDROXY CURABLE FLUOROELASTOMER COMPOSITIONS - Disclosed herein is a curable composition comprising a polyhydroxy curable fluoroelastomer, a polyhydroxy curative, a cure accelerator and an unsaturated metal compound process aid comprising a siloxane having at least one vinyl or allyl group bonded to a silicon atom. Such curable compositions have a lower Mooney viscosity than do similar compositions absent the process aid. | 06-20-2013 |
20130158200 | POLYHYDROXY CURABLE FLUOROELASTOMER COMPOSITIONS - Disclosed herein is a curable composition comprising a polyhydroxy curable fluoroelastomer, a polyhydroxy curative, a cure accelerator and an unsaturated metal compound process aid. Such curable compositions have a lower Mooney viscosity than do similar compositions absent the process aid. | 06-20-2013 |