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| Number | Title | Issue Date |
| 7488852 | PFPEs having at least an alkylether end group and respective preparation process Processes for the preparation of perfluoropolyethers having structural formula R1O—(CF2O)n—(CF2CF2O)mR2 (I) wherein: R1 is —CH3 | 02/10/2009 |
| 7381463 | Metal substrates coated with fluoropolymers Metal substrates having a coating based on ethylene/chlorotrifluoroethylene (E/CTFE) having a TmII of 230° C.-264° C. and a MFI lower than 5 g/10′. ... | 06/03/2008 |
| 7358306 | Curable polyurethanes Curable (per)fluoropolyether polyurethanes obtained by reaction in a first step of a) (per)fluoropolyether diols having a number average molecular weight from 2,000 to 5,000; with b) diisocyanates of formula OCN—R—N... | 04/15/2008 |
| 7323435 | Fluorinated oligourethanes Fluorinated oligourethanes, having number average molecular weight lower than or equal to 9,000, having a branched structure, formed of the following monomers and macromers: a) aliphatic, cycloaliphatic or aromatic polyisocyanates, b) heter... | 01/29/2008 |
| 7323084 | Methods for paper sizing with fluorinated polymers Use for the paper sizing of aqueous polyurethane dispersions from (per)fluoropolyethers obtainable by reaction among the following compounds: a) (per)fluoropolyether diols having a number average molecular weight from 400 to 5,000; b) diiso... | 01/29/2008 |
| 7320818 | Multilayers of polyamides and fluorinated copolymers Multilayer manufactured articles comprising at least one layer based on thermoprocessable copolymers of ethylene with chlorotrifluoroethylene and/or tetrafluroethylene and with acrylic monomers, and one layer based on polyamides. ... | 01/22/2008 |
| 7157550 | Purification process of thermoprocessable tetrafluoroethylene copolymers A purification process of thermoprocessable tetrafluoroethylene (TFE) copolymers comprising the following steps: A) the polymer latex is transformed into gel form, under mechanical stirring, by addition of an acid electrolyte having pH values≦2; ... | 01/02/2007 |
| 7015368 | Purification process of thermoprocessable tetrafluoroethylene copolymers A purification process of thermoprocessable tetrafluoroethylene (TFE) copolymers comprising the following steps: A) the polymer latex is transformed into gel form, under mechanical stirring, by addition of an acid electrolyte havin... | 03/21/2006 |
| 6949676 | Alkyl esters of the 2-(2-fluorosulphonyl)-perfluoroethylenoxy-3-halogen-propionic acid Compounds of formula CH2Y—CH(COOR1)—O—CF2CF2—SO2F, usable in the synthesis of the fluorosulphonic vinylether —CF2═CF—O—CF2CF2—SO2F. ... | 09/27/2005 |
| 6939495 | Thermoprocessable copolymers of TFE A thermoprocessable copolymer of TFE essentially formed by: (a) from 4.5 to 8.5% by weight of perfluoromethylvinylether (PMVE); (b) from 0.3 to 1.6% by weight of a perfluorodioxole of formula: ... | 09/06/2005 |
| 6936654 | Additives for hydrogenated resins Additives for hydrogenated resins obtainable by using the following components: a) bifunctional perfluoropolyethers having a —COOR end group, optionally in admixture with monofunctional perfluoropolyethers having a —COOR end gr... | 08/30/2005 |
| 6902676 | Porous hydrophilic membranes Porous hydrophilic membranes comprising a porous inert support on which an ionomer is deposited, said membranes being characterized in that they have a water permeability higher than 1 l/(h.m2.Atm). ... | 06/07/2005 |
| 6899955 | Antifouling coating composition comprising a fluorinated resin A process for inhibiting the fouling of a substrate in a marine fouling environment, which comprises forming on the substrate, before exposure to the said environment, a coating comprising a curable fluorinated resin of the general formula: W-L-YFC—O—Rf | 05/31/2005 |
| 6878453 | Multilayers of polyamides and CPVC A multilayer comprising at least one layer A) of at least one thermoprocessable polymer containing at least 5% by weight of chlorinated polyvinyl chloride (CPVC) and one layer B) based on polyamides having an amount of —NH2 end groups in the range 20-30... | 04/12/2005 |
| 6844036 | Fluoroelastomeric compositions Fluoroelastomeric compositions comprising: A) a fluoroelastomeric matrix; B) a semi-crystalline fluoropolymer, in an amount from higher than 40% to 90% by weight based on the total of A)+B); the fluoroela... | 01/18/2005 |
| 6825304 | PTFE-based formulation for the insulation of integrated circuits A formulation based on the PTFE, homopolymer or modified, comprising: 1) latex of said PTFE having a particle diameter between 5 and 100 nm, comprising an anionic fluorinated surfactant in an amount in the range 2-25% by weight based on the PTFE; ... | 11/30/2004 |
| 6821454 | Method for removing water from surfaces Method for removing water from surfaces of various materials, comprising the steps of covering said surface with a composition having specific weight higher than that of water and subsequently removing water from the composition by skimming, wherein a composition es... | 11/23/2004 |
| 6822050 | Fluoroelastomeric compositions Fluoroelastomeric compositions comprising: A) a fluoroelastomeric matrix based on vinylidene fluoride (VDF); B) a semi-crystalline fluoropolymer, in an amount from >40% to 90% by weight based on the total of A)+B),... | 11/23/2004 |
| 6818688 | Use of (per)fluoropolyether derivatives in the treatment of substrata having a low surface energy Use for improving the hydro- and oil-repellence properties of substrata having a low surface energy of (per)fluoropolyether mono- and bifunctional derivatives having the structures: W—L—YFC—O—Rf—CFY—L—W (I) Rf | 11/16/2004 |
| 6809167 | Tetrafluoroethylene thermoprocessable copolymer microspheres Tetrafluoroethylene (TFE) thermoprocessable copolymer microspheres having a substantially spherical shape for at least 95% by weight, the average size of the microspheres being in the range 25 μm and 2 mm, the bulk density being in the range 0.5 and 1.1 g/cm3 | 10/26/2004 |
| 6791001 | Process to obtain CFC 113a from CFC 113 A process in gaseous phase to obtain CFC 113a starting from CFC 113, wherein CFC 113, optionally diluted with a gas inert under the reaction conditions, is let flow on a catalyst formed by aluminum fluoride. ... | 09/14/2004 |
| 6790932 | Process for obtaining non thermoprocessable fine powders of homopolymer or modified PTFE A process for obtaining non thermoprocessable fine powders of homopolymer or modified PTFE, comprising the following steps: A) obtaining of the polymer latex under the gel form; B) washing of the polymer gel with acid aqueous solutions or neutral aqueo... | 09/14/2004 |
| 6780966 | Coagulation process of PTFE fine powders A continuous coagulation process of PTFE or modified PTFE fine powders, comprising: a1) dilution in a lift of a PTFE latex up to a concentration from 5 to 25% w/w of PTFE, and optional filtration of the obtained diluted latex, b1) latex pressurization ... | 08/24/2004 |
| 6780363 | PTFE-based polymers Compositions containing core-shell particles having a core polytetrafluoroethylene-based polymers (PTFE) and shell styrene-based polymers (PS), wherein the particles contain an amount by weight of PTFE from 3 to 50%, preferably from 5 to 30% by weight, wherein the c... | 08/24/2004 |
| 6767977 | Fluorinated ionomers Semicrystalline sulphonic fluorinated ionomers having an equivalent weight higher than 700 g/eq, up to 1,700, comprising: (A) monomeric units deriving from one or more fluorinated monomers containing at least one ethylene unsaturation; (B) fluorinated ... | 07/27/2004 |
| 6759494 | Fluoroelastomers Curable fluoroelastomers comprising monomeric units formed by a triazine iodinated derivative having general formula: wherein Y′ is independently H, Cl, F, CH3, or CF3, m′ and t′ are 0 or 1, a... | 07/06/2004 |
| 6756468 | Compositions for coatings based on (per) fluoropolyethers Cmpositions for coatings having a dry content higher than 80%, preferably of about 85-90% by weight, based on polyisocyanates and PFPEs, completely crosslinkable also in a range of temperatures between 5° C. and 20° C., comprising the following components: ... | 06/29/2004 |
| 6753356 | Foaming compositions Use as foaming agents having a low environmental impact of azeotropic or near azeotropic compositions using difluoromethoxy-bis(difluoromethyl ether) and/or 1-difluoromethoxy-1,1,2,2-tetrafluoroethyl difluoromethyl ether. ... | 06/22/2004 |
| 6750295 | Fluoroelastomeric compositions Fluoroelastomeric compositions comprising: A) a fluoroelastomeric matrix based on vinylidene fluoride (VDF); B) a semi-crystalline fluoropolymer, in an amount from 1 to 40% by weight based on the total of A)+B), comprising a semi-crystalline fluoropoly... | 06/15/2004 |
| 6746620 | Use of fluorinated liquids Use of one or more fluorinated liquids as dielectric working fluids in plants or heat transfer circuits comprising parts formed by polymer compound in contact with said fluids, said fluorinated liquids having: boiling point in the range 50° C.-250° C., ... | 06/08/2004 |
| 6730761 | Thermoprocessable copolymers of TFE Thermoprocessable copolymers of TFE essentially formed by the following monomers: (a) FMVE; ((b) a perfluorodioxole of formula: the complement to 100% by weight being TFE. ... | 05/04/2004 |
| 6726840 | Membranes of (per)fluorinated amorphous polymers Porous membranes of (per)fluorinated amorphous polymers having a porosity in the range 5-500 nm, preferably 20-100 nm, measured by an atomic force electronic microscope; the membrane pore average size distribution being narrow, about 80%-90% of the pores have a size... | 04/27/2004 |
| 6710132 | Fluoroelastomeric compositions Fluoroelastomeric compositions comprising: A) a fluoroelastomeric matrix based on tetrafluoroethylene (TFE); B) a semi-crystalline fluoropolymer, in an amount from 2 to 90% by weight based on the total of A)+B), comprising a semi-crystalline fluoropoly... | 03/23/2004 |
| 6706803 | Synthesis of perhalogenated thermoplastic (CO)polymers of chlorotrifluoroethylene A process for the synthesis of chlorotrifluoroethylene (PCTFE) (co)polymers, containing at least 80% by moles of CTFE, being the complement to 100 one or more fluorinated monomers, preferably the complement to 100 is formed of one or more perfluorinated monomers, ch... | 03/16/2004 |
| 6706351 | Multilayer composition comprising fluoropolymers and hydrogenated polymers A multilayer composition comprising: A) a first layer based on copolymers of ethylene (E) with tetrafluoroethylene (TFE) and/or chorotrifluoroethylene (CTFE); B) a second intermediate layer comprising thermoprocessable copolymers of ethylene (E) with t... | 03/16/2004 |
| 6706834 | Sulphonic fluorinated ionomers Sulphonic fluorinated ionomers crosslinked by radical crosslinking of: A) crosslinkable sulphonic fluorinated ionomers, having equivalent weight 380-1300 g/eq and comprising: from 48% to 85% by moles of monomeric units deriving from tetrafluoroethylene (TFE);... | 03/16/2004 |
| 6703521 | Alkyl esters of the 2-(2-fluorosulphonyl)-perfluoroethylenoxy-3-halogen-propionic acid Compounds of formula CH2 Y--CH(COOR1)--O--CF2 CF2 --SO2 F, usable in the synthesis of the fluorosulphonic vinylether --CF2.dbd.CF--O----CF.sub.2 CF2 --SO2 F.... | 03/09/2004 |
| 6699485 | Cosmetic compositions Base compositions (premix) comprising the following components: A) a perfluoropolyether phosphate; B) a solvent; C) water.... | 03/02/2004 |
| 6696512 | Aqueous dispersions of fluoropolymers Aqueous dispersions of fluoropolymers containing as stabilizer from 1 to 30% by weight with respect to the fluoropolymer, of a non ionic surfactant having the following structure: wherein: n is in the range 8-20, preferably 12-15; m is in the range 5-2... | 02/24/2004 |
| 6683128 | Additives for hydrogenated resins Additives for hydrogenated resins obtainable by using the following components: a) bifunctional perfluoropolyethers having a --COOR end group, optionally in admixture with monofunctional perfluoropolyethers having a --COOR end group, b) mono, bi o... | 01/27/2004 |
