DUPONT PERFORMANCE ELASTOMERS L.L.C. Patent applications |
Patent application number | Title | Published |
20110274861 | FUEL MANAGEMENT SYSTEMS HAVING A FLUORORUBBER COMPONENT IN CONTACT WITH FUEL - Disclosed herein is a fuel management system having at least one fluororubber component in contact with fuel wherein said fluororubber component comprises i) a cured fluoroelastomer and ii) 10 to 110 parts by weight of a non-fibrillating polytetrafluoroethylene micropowder per hundred parts by weight fluoroelastomer. | 11-10-2011 |
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 |
20110224358 | PEROXIDE CURABLE FLUOROELASTOMER COMPOSITIONS AND ARTICLES MADE THEREFROM - Peroxide curable fluoroelastomer compositions and articles made therefrom are disclosed. The compositions contain 5 to 45 weight percent, based on total weight of all fluoroelastomers present in the composition, of a blend of dynamically cured fluoroelastomer particles in an uncured fluoroelastomer. The compositions are unfilled, but have tensile properties adequate for many end use applications and are particularly useful as seals in semiconductor manufacturing equipment. | 09-15-2011 |
20110136999 | PROCESS FOR PREPARATION OF FLUOROSILICON POLYMER - Fluorosilicon polymers are disclosed that are prepared by a process comprising reacting a) iodinated oligomers having copolymerized units of perfluoro(methyl vinyl ether) and vinylidene fluoride or tetrafluoroethylene that contain 40-90 mole percent copolymerized units of vinylidene fluoride or tetrafluoroethylene and 10-60 mole percent copolymerized units of perfluoro(methyl vinyl ether), said oligomers having two functional endgroups and having a number average molecular weight between 1000 and 25,000 with b) a methoxyvinyl silane or an ethoxyvinyl silane to form a silicon-containing polymeric adduct that is further reacted with an acid to form a crosslinked fluorinated polymer. | 06-09-2011 |
20110118388 | PROCESS AID FOR EXTRUDED WOOD COMPOSITES - The surface rough less of extruded wood composites and the die pressure in the extrusion process is improved by the incorporation of a process aid comprising fluoropolymer and a salt selected from the group consisting of potassium tetraborate, potassium pentaborate, potassium chloride, and the sodium, calcium or potassium salt of sulfate, pyrosulfate, persulfate, sulfite, phosphate, phosphite, and pyrophosphate. | 05-19-2011 |
20110015359 | Crosslinked Fluoropolymer Networks - Disclosed herein is a crosslinked fluoropolymer network formed by the free radical initiated crosslinking of a diacrylate fluoropolymer The diacrylate copolymer is of formula CH | 01-20-2011 |
20110015358 | FLUOROPOLYMERS HAVING DIACRYLATE ENDS - Disclosed herein is a telechelic diacrylate fluoropolymer and a process for manufacture of the fluoropolymer. The diacrylate copolymer is of formula CH | 01-20-2011 |
20100324234 | COPOLYCONDENSATION POLYMERIZATION OF FLUOROPOLYMERS - Fluorinated copolymers are prepared via copolycondensation polymerization in a process comprising reacting A) a telechelic fluoroazido compound of formula N | 12-23-2010 |
20100324222 | CURABLE FLUOROELASTOMER COMPOSITIONS - This invention relates to curable fluoroelastomer compositions comprising a) fluoroelastomers having either nitrile, alkyne or azide cure sites and b) fluorinated curatives containing diazide, dinitrile or dialkyne groups for reacting with cure sites on the fluoroelastomer. Fluoroelastomers having azide cure sites form crosslinks with curatives having dinitrile or dialkyne groups. Fluoroelastomers having nitrile or alkyne cure sites form crosslinks with curatives having diazide groups. | 12-23-2010 |
20100298503 | FLUOROELASTOMER PROCESS AID CONTAINS POLYALKYLENE OXIDE AND POLYCAPROLACTONE - A process aid for improving the processability of non-fluorinated melt processible polymers contains a fluoroelastomer having a Mooney viscosity (ML (1+10) at 121° C.) between 30 and 100 and at least two interfacial agents, one a polycaprolactone having a Mn between 2000 and 8000 and the other a polyalkylene oxide having a Mn between 3000 and 5000. | 11-25-2010 |
20100292405 | PARTIALLY HYDROLYZED CHLOROSULFONATED POLYOLEFIN ELASTOMERS - At least partially hydrolyzed chlorosulfonated polyolefin elastomers containing 0.5-10 weight percent chlorine and 0.25 to 5 weight percent sulfur are prepared from low density polyethylene or from linear ethylene/alpha-olefin copolymer base resins having a ratio of weight average molecular weight (Mw) to number average molecular weight (Mn) less than 3.5. | 11-18-2010 |
20100292395 | PROCESS FOR THE MANUFACTURE OF AT LEAST PARTIALLY HYDROLYZED CHLOROSULFONATED POLYOLEFIN ELASTOMERS IN OIL - A process for the manufacture of an oil concentrate comprising oil and one or more at least partially hydrolyzed chlorosulfonated polyolefin elastomers containing 0.5-50 weight percent chlorine and 0.25 to 5 weight percent sulfur is disclosed. | 11-18-2010 |
20100216933 | CURED PERFLUOROELASTOMER ARTICLE - Cured perfluoroelastomers that contain high levels (i.e. at least 65 phr carbon black) and 1 to 15 phr of a perfluoropolyether exhibit good resistance to explosive decompression while maintaining good sealing properties. | 08-26-2010 |
20100069554 | CURABLE FLUOROPOLYMER COMPOSITIONS - Polyhydroxy curable fluoropolymer compositions comprise polyhydroxy curable fluoropolymer, a β-fluoroalcohol having the formula R—(CF | 03-18-2010 |
20100016511 | FLUOROELASTOMER COMPOSITION CONTAINING PROCESS AID - Polyhydroxy curable fluoroelastomer compositions contain at least one process aid that is an aminosilicone having only a single primary amine group per polysiloxane molecule. | 01-21-2010 |