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Ausimont S.p.A. Patents
Assignee:
Ausimont S.p.A.
Address:
Milan, IT
No. of patents:
371
Patents:


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Patent Number Title Of Patent Date Issued
7488852 PFPEs having at least an alkylether end group and respective preparation process February 10, 2009
Processes for the preparation of perfluoropolyethers having structural formula R.sub.1O--(CF.sub.2O).sub.n--(CF.sub.2CF.sub.2O).sub.mR.sub.2 (I) wherein: R.sub.1 is --CH.sub.3 or --C.sub.2H.sub.5; R.sub.2 is equal to R.sub.1 or --CF.sub.2H n is 0 or an integer from 1 to 100; m is an
7381463 Metal substrates coated with fluoropolymers June 3, 2008
Metal substrates having a coating based on ethylene/chlorotrifluoroethylene (E/CTFE) having a T.sub.mII of 230.degree. C.-264.degree. C. and a MFI lower than 5 g/10'.
7358306 Curable polyurethanes April 15, 2008
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--NCO (VIA) wherein R is a hydrogenated and/or fluorinated radical; in a
7323435 Fluorinated oligourethanes January 29, 2008
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) heterofunctional hydrogenated monomers having gen
7323084 Methods for paper sizing with fluorinated polymers January 29, 2008
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) diisocyanates having formula: OCN--R--NCO (VIa)
7320818 Multilayers of polyamides and fluorinated copolymers January 22, 2008
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.
7157550 Purification process of thermoprocessable tetrafluoroethylene copolymers January 2, 2007
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.ltoreq.2; B) washing of the polymer gel w
7015368 Purification process of thermoprocessable tetrafluoroethylene copolymers March 21, 2006
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 .ltoreq.2; B) washing of the polymer ge
6949676 Alkyl esters of the 2-(2-fluorosulphonyl)-perfluoroethylenoxy-3-halogen-propionic acid September 27, 2005
Compounds of formula CH.sub.2 Y--CH(COOR.sub.1)--O--CF.sub.2 CF.sub.2 --SO.sub.2 F, usable in the synthesis of the fluorosulphonic vinylether --CF.sub.2.dbd.CF--O--CF.sub.2 CF.sub.2 --SO.sub.2 F.
6939495 Thermoprocessable copolymers of TFE September 6, 2005
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: ##STR1## wherein: Y=F, OR.sub.f, R.sub.f wherein R.sub.f is a perfluoroalkyl having from 1
6936654 Additives for hydrogenated resins August 30, 2005
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 or polyfunctional hydrogenated monom
6902676 Porous hydrophilic membranes June 7, 2005
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.m.sup.2.Atm).
6899955 Antifouling coating composition comprising a fluorinated resin May 31, 2005
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--R.sup.f --CFY-L-W wherein: W is a g
6878453 Multilayers of polyamides and CPVC April 12, 2005
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 --NH.sub.2 end groups in the range 20-300 .mu.eq/g.
6844036 Fluoroelastomeric compositions January 18, 2005
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 fluoroelastomer A) incorporates the fluoropolymer B), the fluoropolymer B) being formed by t
6825304 PTFE-based formulation for the insulation of integrated circuits November 30, 2004
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; 2) non ionic fluorinated surfactant add
6822050 Fluoroelastomeric compositions November 23, 2004
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), comprising a semi-crystalline fluoropolymer core coated by a semi-cr
6821454 Method for removing water from surfaces November 23, 2004
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 essentially consisting o
6818688 Use of (per)fluoropolyether derivatives in the treatment of substrata having a low surface energ November 16, 2004
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:wherein: L is a linking organic group --CO--NR'--(CH.sub.2).sub.q --, with R'.dbd.H or C.sub.1 -C.sub.4
6809167 Tetrafluoroethylene thermoprocessable copolymer microspheres October 26, 2004
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 .mu.m and 2 mm, the bulk density being in the range 0.5 and 1.1 g/cm.sup.3.
6791001 Process to obtain CFC 113a from CFC 113 September 14, 2004
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.
6790932 Process for obtaining non thermoprocessable fine powders of homopolymer or modified PTFE September 14, 2004
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 aqueous solutions; C) granulation of
6780966 Coagulation process of PTFE fine powders August 24, 2004
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 in the lift by an inert gas, prefe
6780363 PTFE-based polymers August 24, 2004
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 core PTFE particles
6767977 Fluorinated ionomers July 27, 2004
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 monomeric units containing sulphon
6759494 Fluoroelastomers July 6, 2004
Curable fluoroelastomers comprising monomeric units formed by a triazine iodinated derivative having general formula: ##STR1##wherein Y' is independently H, Cl, F, CH.sub.3, or CF.sub.3, m' and t' are 0 or 1, and m'+t'=0 or 1, preferably m'+t'=0; p' is an integer and is equal to 1 wh
6756468 Compositions for coatings based on (per) fluoropolyethers June 29, 2004
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.degree. C. and 20.degree. C., comprising the following components: Component 1):
6753356 Foaming compositions June 22, 2004
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.
6750295 Fluoroelastomeric compositions June 15, 2004
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 fluoropolymer core coated by a semi-crystall
6746620 Use of fluorinated liquids June 8, 2004
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.degree. C.-250.degree. C., formulawherein:
6730761 Thermoprocessable copolymers of TFE May 4, 2004
Thermoprocessable copolymers of TFE essentially formed by the following monomers: (a) FMVE; ((b) a perfluorodioxole of formula: ##STR1## the complement to 100% by weight being TFE.
6726840 Membranes of (per)fluorinated amorphous polymers April 27, 2004
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 ranging from minus 5
6710132 Fluoroelastomeric compositions March 23, 2004
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 fluoropolymer core coated by a semi-crystall
6706834 Sulphonic fluorinated ionomers March 16, 2004
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);from 15% to 47% by moles of fl
6706803 Synthesis of perhalogenated thermoplastic (CO)polymers of chlorotrifluoroethylene March 16, 2004
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, characterized in tha
6706351 Multilayer composition comprising fluoropolymers and hydrogenated polymers March 16, 2004
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 tetrafluoroethylene (TFE) and/or ch
6703521 Alkyl esters of the 2-(2-fluorosulphonyl)-perfluoroethylenoxy-3-halogen-propionic acid March 9, 2004
Compounds of formula CH.sub.2 Y--CH(COOR.sub.1)--O--CF.sub.2 CF.sub.2 --SO.sub.2 F, usable in the synthesis of the fluorosulphonic vinylether --CF.sub.2.dbd.CF--O----CF.sub.2 CF.sub.2 --SO.sub.2 F.
6699485 Cosmetic compositions March 2, 2004
Base compositions (premix) comprising the following components: A) a perfluoropolyether phosphate; B) a solvent; C) water.
6696512 Aqueous dispersions of fluoropolymers February 24, 2004
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 5-20, preferably 7-12; p is in the
6683128 Additives for hydrogenated resins January 27, 2004
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 or polyfunctional hydrogenated monom
6673866 Thermoplastic compositions of fluoropolymers January 6, 2004
A polymer composition formed by: I) fluoropolymers selected from one or more of the following: copolymers based on ethylene, TFE and/or CTFE modified with hydrogenated monomers, or blends of these fluoropolymers with PCTFE; said fluoropolymers and/or the corresponding blends optionall
6664338 Curable fluoroelastomers December 16, 2003
Fluoroelastomers curable by ionic route based on vinylidene fluoride (VDF) comprising: a) 100 parts by weight of fluoroelastomer based on vinylidene fluoride (VDF) substantially polar end group free; b) from 0.05 to 5 phr of accelerant; c) from 0.5 to 15 phr of curing agent; d) f
6660798 Mixtures of fluoropolymer dispersions December 9, 2003
Mixtures of fluoropolymer dispersions comprising: a) one or more dispersions constituted by TFE homopolymers or by its copolymers with particle average sizes ranging from 180 to 400 nm; b) one or more TFE copolymer dispersions with one or more monomers containing at least one ethylene
6656991 Blends of fluorinated and acrylic elastomers December 2, 2003
Compounds comprising a peroxide and a curable blend by peroxidic way, consisting essentially of hydrocarbon elastomers containing at least an acrylic monomer, and of unsaturated fluorinated elastomers obtained by dehydro halogenation of fluorinated VDF-based elastomers, said fluorinated
6653495 Process for obtaining mixtures of phosphoric mono- and diesters November 25, 2003
Process for obtaining mixtures of phosphoric mono- and diesters having the formula:wherein: w=1-2; v=1-6; q=1-20; Z=O(C.sub.2 H.sub.4 O).sub.p --, O(CH.sub.2).sub.n --O--, O(C.sub.3 H.sub.6 O).sub.p --, S(C.sub.2 H.sub.4 O).sub.p --, S(C.sub.3 H.sub.6 O).sub.p --; n=1-20; p=1-5;
6642331 Perfluoroelastomers November 4, 2003
Perfluoroelastomers, curable by peroxidic route, obtainable by polymerizing the following monomers: a) tetrafluoroethylene (TFE); b) fluorovinylethers of general formula:said perfluoroelastomers comprising iodine and/or bromine atoms in the chain and/or in end position, said halogen at
6639011 Polymerization process of sulphonic monomers October 28, 2003
A polymerization process in aqueous emulsion of: (I) one or more fluorinated monomers containing at least one ethylene unsaturation; (II) one or more fluorinated monomers, containing sulphonyl groups --SO.sub.2 F; said process comprising the use of a surfactant having the formula:
6630271 Electrolyte polymers for lithium rechargeable batteries October 7, 2003
Use of vinylidenfluoride (VDF) copolymers for preparing electrolyte polymers, wherein the VDF copolymers have the following polymeric structure (I):wherein: R.sub.f is a perfluoroalkyl group having from 1 to 3 carbon atoms; X, Y, and Z equal to or different from each other are selected
6610686 Use of pirenoxine for the protection of corneal tissues in photokeractomy August 26, 2003
Pirenoxine or 1-hydroxy-5-oxo-5H-pyrido-[3,2a]-phenoxazin-3-carboxylic acid, also called pirfenossone and already used as anti-cataract agent, in the form of a pharmaceutically acceptable salt thereof, if desired, is used for the protection of the corneal tissue in photokeratectomy i
6608138 Perfluoropolyether compounds as additives in formulations August 19, 2003
Processes for wood treatment using mono- and bifunctional perfluoropolyether compounds as additives in formulations for the wood treatment, said perfluoropolyether compounds having the structures:wherein: L is an organic group selected from --CH.sub.2 --(OCH.sub.2 CH.sub.2).sub.n --,
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