SOLVAY SOLEXIS S.P.A. Patent applications |
Patent application number | Title | Published |
20120289616 | PROCESS FOR STABILIZING FLUOROPOLYMER HAVING ION EXCHANGE GROUPS - The invention pertains to a process for stabilizing a semi-crystalline fluoropolymer comprising ion exchange groups, said process comprising: suspending at least one semi-crystalline fluoropolymer having ion exchange groups [polymer (I)] in at least one fluorinated organic dispersing medium [medium (M)] so as to obtain a dispersion (D) of polymer (I) in a dispersing medium (M); contacting said dispersion (D) with fluorine under irradiation with U. V. radiation so as to obtain a stabilized polymer. Still objects of the invention are a stable semi-crystalline fluoropolymer as above defined having a low amount of unstable ends groups of —COF type, the use of the stabilized fluoropolymer obtained by the process or of the stable fluoropolymer in fuel cells devices, a membrane and a membrane-electrode assembly comprising said fluoropolymers. | 11-15-2012 |
20120095243 | Process for producing perfluorinated organic compounds - A process for producing a perfluorinated functional compound is disclosed, which comprises:
| 04-19-2012 |
20120076990 | Fluoroionomers dispersions having a low surface tension, low liquid viscosity and high solid content - The invention pertains to a process for manufacturing certain (per)fluoroionomer liquid compositions, comprising, inter alia, at least one of fluorination and treatment with a polar solvent, to the liquid compositions therefrom having an improved solids content/surface tension/liquid viscosity compromise, to the use of the same for manufacturing composite membranes and to composite membranes obtainable therefrom. | 03-29-2012 |
20120060903 | PROTECTIVE FILM FOR A SOLAR CELL MODULE - The invention relates to a protective film for a solar cell module, to a process for manufacturing said protective film and to a solar cell module comprising said protecting and to a method for protecting a solar cell module comprising using of such protective film. The protective film comprises at least one layer comprising a perfluoropolyether (PFPE) polymer [polymer (F)], the polymer being obtainable by cross-linking a composition [composition (C)] comprising: a) at least one functional perfluoropolyether compound [compound (E)], the compound (E) comprising a (per)fluoropolyalkylene chain [chain (R | 03-15-2012 |
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 |
20120055779 | Process for the purification of polyol PFPE derivatives - A process for purifying a polyol (per)fluoropolyether derivative [polyol (P)] from a mixture of hydroxyl (per)fluoropolyether derivatives [mixture (M)]. Such polyol (P) comprising one or more hydroxyl (per)fluoropolyether derivatives [PFPE (OH)] comprising at least one (per)fluoropolyoxyalkylene chain (chain R | 03-08-2012 |
20120028858 | Process for the manufacture of functional PFPE derivative - A process for the manufacture of a functional (per)fluoropolyether derivative comprising at least one triazole group, such process comprising: (1) reacting a (per)fluoropolyether hydroxyl derivative having at least one hydroxyl group [derivative (PFPE-OH)] with an activating agent, to yield an activated (per)fluoropolyether hydroxyl derivative comprising at least one activated hydroxyl group [derivative (a-PFPE-OH)]; (2) reacting said activated (per)fluoropolyether hydroxyl derivative [derivative (a-PFPE-OH)] with at least one azide salt to yield a functional (per)fluoropolyether derivative comprising at least one azido group [derivative (PFPE-N | 02-02-2012 |
20110298158 | Nanolithography process - A method for replicating a pattern, comprising: (a) providing a patterned template comprising a patterned template surface having a plurality of recessed or protruded areas formed therein; (b) contacting a volume of a curable perfluoropolyether composition [composition (C)] with the patterned template surface, the composition C comprising: at least one functional perfluoropolyether compound [compound (E)] which comprises a (per)fluoropolyoxyalkylene chain [chain (R | 12-08-2011 |
20110294944 | Perfluoroelastomer - A peroxide curable perfluoroelastomer comprising: recurring units derived from tetrafluoroethylene (TFE); recurring units derived from perfluoroethylvinylether (EVE), in an amount of between 2 and 17% by moles, with respect to total recurring units derived from TFE, perfluoromethylvinylether (MVE) and EVE; and recurring units derived from perfluoromethylvinylether (MVE), in an amount of between 23 and 35% by moles, with respect to total recurring units derived from TFE, perfluoromethylvinylether (MVE) and EVE. A process for its manufacture and its use for the manufacture of cured articles. | 12-01-2011 |
20110294938 | Perfluoroelastomer - A peroxide curable perfluoroelastomer comprising: recurring units derived from tetrafluoroethylene (TFE); and recurring units derived from perfluoromethylvinylether (MVE); such perfluoroelastomer possessing a Mooney Viscosity (ML2+9) at 121° C. of from 25 to 140 MU, when measured according to ASTM D1646 standard, and comprising such MVE recurring units in an amount of from 26 to 33% by moles with respect to total moles of TFE and MVE. A process for the manufacture of such perfluoroelastomer, and cured articles obtainable therefrom. | 12-01-2011 |
20110263793 | (Per)fluoroelastomeric compositions - Extrudable (per)fluoroelastomer compositions comprising crosslinkable (per)fluoroelastomers having:
| 10-27-2011 |
20110245402 | (Per)fluoroelastomer composition - The invention pertains to a (per)fluoroelastomer composition comprising at least one (per)fluoroelastomer [(per)fluoroelastomer (A)] matrix comprising particles of at least one perfluoropolymer [polymer (F)] having a melt flow index (MFI), measured at 372° C. under a 5 Kg load according to ASTM D1238 standard, of less than 10 g/10 min, said particles having an average size of less than 100 nm. | 10-06-2011 |
20110240559 | Purification of fluoroionomer compositions - A process for the purification from ionic impurities of a fluoroionomer liquid composition, comprising: providing a liquid composition comprising at least one fluoroionomer (I-1) in a liquid medium, the liquid composition comprising ionic impurities; contacting the liquid composition with a solid particulate comprising at least one fluoroionomer (I-2) having ion exchange groups, wherein H | 10-06-2011 |
20110237751 | Vulcanized (per)fluoroelastomer sealing articles - This invention pertains to sealing articles of vulcanized (per)fluoroelastomer compositions incorporating particles of a vinylidene fluoride (VDF) polymers having a Shore A hardness of at least 85 when determined according to ASTM D 2240 Type A Durometer method, and a compression set of less than 30%, when determined according to ASTM D395 at 200° C. for 70 h on O-ring according to ASTM D1414, and to a process for their manufacture by vulcanizing-molding and thermal post-treating at a temperature above the melting point of the VDF polymer. | 09-29-2011 |
20110230631 | Polyfunctional (per)fluoropolyethers - The invention pertains to novel (per)fluoropolyethers comprising at least one (per)fluoropolyoxyalkylene chain (chain R | 09-22-2011 |
20110226333 | Opaque fluoropolymer composition comprising white pigments for photovoltaic elements of solar cells - A fluoropolymer composition having a total luminous transmittance (TT) of less than 15%, when measured according to ASTM D1003 on a sample having a thickness of about 50 μm, said composition comprising: at least one hydrogen-containing fluoropolymer [polymer (A)]; from 5 to 80% by weight of (A) of at least one inorganic pigment [pigment (I)]; and from 1 to 99% by weight of (I) of at least one per(halo)fluoropolymer chosen among tetrafluoroethylene (TFE) copolymers having a dynamic viscosity at a shear rate of 1 rad×sec | 09-22-2011 |
20110213182 | Process for the manufacture of fluorosurfactants - A process for the manufacture of a perfluorooxycarboxylate of formula (I): R | 09-01-2011 |
20110213085 | Fluorinated thermoplastic polymer additive - The invention pertains to the use of certain fluorinated thermoplastic polymer additives for reducing the coefficient of friction of non-fluorinated polymers and to masterbatches of said additives with non-fluorinated polymers. | 09-01-2011 |
20110207235 | USE OF PERFLUOROPOLYMERS IN THE DETERMINATION OF THE RECEPTOR-LIGAND BINDING CONSTANT - A method for determining the binding constant of interacting molecular species comprises the use of flat surfaces comprising perfluorinated polymers and measurements of reflected light intensity. The surfaces comprise at least one molecule with the receptor function absorbed or immobilized on the surface and at least one ligand that interacts with the receptor. | 08-25-2011 |
20110206853 | Method for forming a lubricating film - A method of forming a lubricating film on a surface, comprising applying to a surface a multiphasic composition comprising at least one (per)fluoropolyether (PFPE) lubricant, water and from 0.1 to 3% by weight of water of at least one thickening agent, said multiphasic composition having a viscosity, when measured at 21° C. at a shear rate of 1 sec | 08-25-2011 |
20110190544 | Modification of carbonaceous materials - A modified carbonaceous material having chemically bound on its surface at least one fluoropolyoxyalkylene chain (chain R | 08-04-2011 |
20110189795 | USE OF PERFLUOROPOLYMER SUBMICROMETRIC LATEXES IN THE DETERMINATION OF MOLECULAR INTERACTIONS BY LASER LIGHT SCATTERING (LLS) - Use of a latex of perfluorinated polymers having particles with an average diameter between 5 and 200 nm for determining the binding constant of two interacting molecular species by Laser Light Scattering (LLS), said polymeric particles comprising on the surface an amphiphilic non ionic surfactant, the same or a different surfactant ended with a receptor and a ligand interacting with the receptor. | 08-04-2011 |
20110189395 | Process for imparting grease, oil and water repellence to substrates - A process for imparting grease, oil and water repellence to a substrate comprises applying by means of a printing process on at least a portion of the surface of such substrate a composition comprising at least one (per)fluoropolyether derivative. By means of such process it is possible to confer suitable grease, oil and water repellence properties to substrates via selective treatment/coating, by significantly reducing total amount of fluoro-containing additive required for the target properties. | 08-04-2011 |
20110175016 | Method for transferring heat - A process for transferring heat from a heat source to a heat sink, comprising using as heat transfer medium a composition comprising: at least one fluorinated fluid free from functional groups (fluid (H)); at least one functional (per)fluoropolyether (functional PFPE(1)) comprising recurring units (R1), said recurring units comprising at least one ether linkage in the main chain and at least one fluorine atom (fluoropolyoxyalkylene chain), and at least one functional end group chosen between —COOH and —CONH | 07-21-2011 |
20110160415 | Method for manufacturing fluoropolymers - The invention pertains to a method for making a fluoropolymer comprising an aqueous emulsion polymerization of one or more fluorinated monomers wherein said aqueous emulsion polymerization is carried out in the presence of at least one cyclic fluorocompound of the following formula (I): | 06-30-2011 |
20110136948 | LINEAR PERFLUOROPOLYETHERS HAVING AN IMPROVED THERMOOXIDATIVE STABILITY - Linear perfluoropolyethers of formula: | 06-09-2011 |
20110136713 | Hydrofluoroalcohols with improved thermal and chemical stability - Hydrofluoro alcohols of formula (I): A—(R | 06-09-2011 |
20110098512 | Method for manufacturing perfluorovinylethers - A process for the manufacture of a perfluorovinylether by hydrodehalogenation of a halofluoroether (HFE) having general formula (I-A) or (I-B): | 04-28-2011 |
20110082271 | Vinylidene fluoride and trifluoroethylene containing polymers - A polymer comprising recurring units derived from vinylidene fluoride (VDF) and trifluoroethylene (TrFE), such polymer comprising end groups of formula —CF | 04-07-2011 |
20110067957 | Method for lubricating wind turbine gearbox - A method of lubricating a wind turbine gearbox comprising using a lubricating composition comprising at least one (i.e. one or a mixture of more than one) perfluoropolyether (PFPE) lubricant which comprises a perfluorooxyalkylene chain, said perfluorooxyalkylene chain comprising recurring units having at least one ether bond and at least one fluorocarbon moiety. A wind turbine gearbox comprising a lubricating system containing said lubricating composition. | 03-24-2011 |
20110052798 | CCM COMPOSITE - CCM formed of a membrane having on one of the two surfaces a first electrocatalytic layer containing a catalyst and on the other one a second electrocatalytic layer containing a catalyst, said electrocatalytic layers and said membrane containing (per)fluorinated ionomers, said CCM having the following characteristics:
| 03-03-2011 |
20110040039 | TETRAFLUOROETHYLENE POLYMER PARTICLES - Core-shell particles having a core of at least one tetrafluoroethylene (TFE) polymer and having an average primary particle size of less than 50 nm; and a shell of at least one acrylic polymer having recurring units, more than 50% by moles of which being derived from at least one ethylenically unsaturated monomer having directly bonded to one of the sp | 02-17-2011 |
20110015107 | (Per)Fluorinated addition products - The invention pertains to a process for the addition of at least one (per)fluoropolyether peroxide comprising at least one peroxidic moiety and at least one fluoropolyoxyalkene chain (chain R | 01-20-2011 |
20110003968 | Process for the purification of polyol PFPE derivative - A process for the purification of a tetraol PFPE derivative [tetraol (T)] of formula (I): HO—CH | 01-06-2011 |
20100297523 | Fluoroionomer liquid composition - A liquid composition comprising:
| 11-25-2010 |
20100280291 | Process for the synthesis of perfluorobutadiene - Process for preparing perfluoro-1,3-butadiene, comprising the following steps:
| 11-04-2010 |
20100273968 | Addition reaction to fluoroallylfluorosulfate - The invention pertains to a process for preparing compounds of formula (I-A) or (I-B) here below: by reaction of perfluoroallylfluorosulfate (FAFS) of formula (II): with at least one hypofluorite of formula (II-A) or (II-B): wherein: R | 10-28-2010 |
20100240930 | Process for the manufacture of polyol perfluoropolyether derivative - A process for the manufacture of a polyol (per)fluoropolyether derivative, comprising: 1. reacting at least one triol having two protected hydroxyl functions and a free hydroxyl group with an activating agent, to yield an activated protected triol; 2. reacting the activated protected triol with a functional (per)fluoropolyether derivative of formula: T | 09-23-2010 |
20100227983 | Manufacture of medical implants - The invention pertains to a process for the manufacture cola medical implant, said process comprising:
| 09-09-2010 |
20100197869 | Aromatic hydrogenated polymers containing fluorine - Aromatic hydrogenated polymers comprising perfluoropolyether (PIPE) chains bonded to the aromatic rings to form sequences randomly distributed in the polymer structure, having the formula (I): (T | 08-05-2010 |
20100187469 | Heat transfer fluid - The invention pertains to a heat transfer composition comprising: at least one fluorinated ether fluid free from functional groups (fluid (H)); from 0.01 to 5% wt with respect to fluid (H) of at least one solid nano-sized additive chosen among metal, metal oxide or carbonaceous material particles, having an average particle size of less than 2 000 nm (additive (N)); and from 0.1 to 10% wt with respect to fluid (H) of at least one functional (per)fluoropolyether comprising recurring units (R1), said recurring units comprising at least one ether linkage in the main chain and at least one fluorine atom (fluoropolyoxyalkene chain) and comprising at least one functional group (functional PFPE (F)). | 07-29-2010 |
20100133482 | Vinylidene fluoride copolymers - The present invention pertains to a linear semi-crystalline copolymer [polymer (A)] comprising recurring units derived from vinylidene fluoride (VDF) monomer and at least one hydrophilic (meth)acrylic monomer (MA) of formula (I) wherein each of R1, R2, R3, equal or different from each other, is independently an hydrogen atom or a C | 06-03-2010 |
20100121106 | Method for preparing carbonylic perfluoropolyethers - A process for preparing perfluoropolyethers of formula | 05-13-2010 |
20100116927 | Solar cell module - The present invention pertains to a solar cell module comprising at least one photovoltaic element encapsulated between a front layer on its light receiving surface side and a back layer, said front layer comprising at least one layer comprising a tetrafluoroethylene (TFE) polymer [polymer (F)], said polymer (F) comprising: recurring units derived from TFE; and from 15 to 25% wt of recurring units derived from at least one perfluoromonomer [monomer (CM)] chosen among: (i) perfluoroalkylvinylethers complying with formula CF | 05-13-2010 |
20100105584 | Fluorinated Lubricants - Fluorinated lubricants of formula: T-O[A-B] | 04-29-2010 |
20100087553 | Process for stabilizing fluoropolymer having ion exchange groups - The invention pertains to a process for stabilizing a semi-crystalline fluoropolymer comprising ion exchange groups, said process comprising:
| 04-08-2010 |
20100069275 | Fluorinated lubricants - Polymers of formula | 03-18-2010 |
20100040912 | Process for operating a fuel cell in dry conditions - The invention pertains to a process for operating a polymer electrolyte membrane fuel cell (PEMFC), said PEMFC comprising:
| 02-18-2010 |
20090326154 | Additives for Halopolymers - Polymeric compositions comprising:
| 12-31-2009 |
20090286922 | (PER)FLUOROELASTOMERIC COMPOSITIONS - A (per)fluoroelastomeric composition curable by peroxidic way comprising:
| 11-19-2009 |
20090272944 | Fluoropolymer Dispersion Purification - The invention pertain to a process for purifying a fluoropolymer dispersion, said process comprising:
| 11-05-2009 |
20090269408 | Aqueous formulations of imidoalkanepercarboxylic acids - Liquid formulations of imidoalkanepercarboxylic acids, in the form of aqueous dispersions comprising, in percentages by weight relative to the total weight of the composition: A) from ≧7% to 40% and preferably from 10% to 20% of imidoalka-nepercarhoxylic acids having the general formula (I), the said imidoalkanepercarboxylic acids being in the β form and having a dissolution time, determined via the test of the rate of dissolution at a temperature of 40° C. or 18° C., of not more than 5 minutes when determined at 40° C. or 15 minutes when determined at 18° C., for an amount of dissolved acid equal to 99% of the theoretical amount; B) from 0.001% to 0.9% of a nonionic surfactant; the said dispersions having a viscosity of not more than 2000 mPa·sec at 25° C. by applying a shear rate of 20 s | 10-29-2009 |
20090258273 | ASSEMBLIES FOR ELECTROCHEMICAL DEVICES - MEA 7-layer assemblies with gasket, comprising:
| 10-15-2009 |
20090209442 | CYCLIC PHOSPHAZENE COMPOUND - A cyclic phosphazene compound complying with formula (I) or (II): | 08-20-2009 |
20090203830 | Thermoplastic Fluoropolymer Composition - The invention pertains to a thermoplastic fluoropolymer composition comprising: at least one thermoplastic partially fluorinated fluoropolymer having a melt flow index (MFI) of less than 10 g/10 min. as measured according to ASTM D-1238 under a piston load of 5 kg polymer A; from 0.05 to 5% by weight of A at least one (per)fluoropolyether, polymer B; and from 0 to 10% by weight of A of at least one per(halo)fluoropolymer polymer C. The addition of a (per)fluoropolyether B and, optionally, of a per(halo) fluoropolymer C advantageously enables improvement of rheological behavior of thermoplastic partially fluorinated fluoropolymer A, making possible processing in less severe conditions and yielding final parts with outstanding surface aspect and good homogeneity and coherency. Still objects of the inventions are the process for manufacturing said thermoplastic fluoropolymer composition and the articles thereof. | 08-13-2009 |
20090202883 | Catalyst-Polymer Liquid Dispersion For Fuel Cell Applications - Catalyst-polymer liquid dispersion (LD) comprising (i) catalyst particles, (ii) polymer particles consisting of at least one (per)fluoro sulfonyl fluoride polymer in the —SO | 08-13-2009 |
20090192259 | LAN CABLES - Use in LAN cable applications, as materials for the coating of the primary cable and for the external jacket, of TFE thermoprocessable perfluoropolymers comprising perfluoroalkylvinylethers in the following amounts, expressed as percent by weight on the total of the monomers: a) 0-5.5% of perfluoromethylvinylether (PMVE); b) 0.4-4.5% of perfluoroethylvinylether (PEVE) and/or perfluoropropylvinylether (PPVE); when a) is present, then a)+b) ranges from 1.5% to 5.5% by weight on the total of the monomers; optionally c) 0-6% of hexafluoropropene (HFP); the TFE amount being the complement to 100% by weight. | 07-30-2009 |
20090171004 | Thermoplastic Halopolymer Composition - The invention pertains to a thermoplastic fluoropolymer composition comprising: at least one thermoplastic partially fluorinated fluoropolymer having a melt flow index (MFI) of less than 10 g/10 min, as measured according to ASTM D-1238 under a piston load of 5 kg polymer A; from 0.05 to 5% by weight of A at least one (per)fluoropolyether, polymer B; and from 0 to 10% by weight of A of at least one per(halo)fluoropolymer polymer C. The addition of a (per)fluoropolyether B and, optionally, of a per(halo)fluoropolymer C advantageously enables improvement of rheological behavior of thermoplastic partially fluorinated fluoropolymer A, making possible processing in less severe conditions and yielding final parts with outstanding surface aspect and good homogeneity and coherency. Still objects of the inventions are the process for manufacturing said thermoplastic fluoropolymer composition and the articles thereof. | 07-02-2009 |
20090118550 | PROCESS FOR PREPARING HIGH PURITY MONOCARBOXYLIC PERFLUOROPOLYETHERS - A process for preparing monocarboxylic perfluoropolyethers of formula: A-O-(R | 05-07-2009 |
20090108501 | Polymerization Process - A fluoropolymer [polymer (F)], a polymerisation process for its manufacture, and a moulding process using such fluoropolymer [polymer (F)]. | 04-30-2009 |
20090105420 | Thermoplastic Fluoropolymer Composition - This invention pertains to a thermoplastic fluoropolymer composition comprising:
| 04-23-2009 |
20090042316 | USE OF PERFLUOROPOLYMERS IN THE DETERMINATION OF THE RECEPTOR-LIGAND BINDING CONSTANT - Use of flat surfaces comprising perfluorinated polymers in the determination of the binding constant of two interacting molecular species by using measurements of reflected light intensity, said surface comprising at least one molecule with the receptor function adsorbed or immobilized on said surface, and at least one ligand which interacts with the receptor. | 02-12-2009 |
20090018244 | Water-Based Fluoropolymer Composition - A fluoropolymer composition comprising:
| 01-15-2009 |
20090008596 | HEAT TRANSFER FLUIDS - Use as heat transfer fluids in the presence of metals and/or Lewis acids of mixtures comprising: (A) hydrofluoroethers and/or hydrofluoropolyethers, liquid under the environmental conditions (25° C., 1 atm); (B) a compound having a fluoropolyether structure having end groups selected from the pyridine, amine, aryl classes; and having a number average molecular weight comprised between 400 and 10,000. | 01-08-2009 |
20080234171 | Dilution Process for Imidopercarboxylic Acids - Process for obtaining dilute aqueous solutions containing an amount of <7% by weight, expressed as a percentage by weight of imidoalkanepercarboxylic acids, starting with concentrated aqueous compositions of the said peracids in the β form, the said concentrated compositions being obtained from the imidoalkanepercarboxylic acids in the α-crystal form, the said process comprising the following steps: I) dilution of the concentrated aqueous composition of imidoalkanepercarboxylic acids (C) with an aqueous solution (D) having a pH of between 2 and 5, in a (C):(D) proportion, expressed in parts by weight, of between 0.1:10 and 10:0.2, working at temperatures of between 4° C. and 30° C.; II) application to the dilute aqueous composition obtained in I) of a shear force of at least 5000 s | 09-25-2008 |