Patents Assigned to Ausimont S.p.A.
  • Fine powders of polytetrafluoroethylene
    Publication number: 20020035221
    Abstract: Fine powders of modified PTFE having a “core-shell” structure; the fine powder being formed by:
    Type: Application
    Filed: July 19, 2001
    Publication date: March 21, 2002
    Applicant: Ausimont S.p.A.
    Inventors: Valery Kapeliouchko, Enrico Marchese
  • Fluoropolymer dispersions
    Patent number: 6359044
    Abstract: Fluoropolymer aqueous dispersions comprising an hydrogenated nonionic surfactant and a fluorinated nonionic surfactant selected from the following classes: Rf—L—(OCH(R1)—CH(R2))n—O—A  (I) wherein: n is an integer comprised between 4 and 60; L is selected from: —(CF(Y)—CO—O)pR′—; —(CF(Y)—CO—NH)pR′—; —(CF(Y)—SO2—NH)pR′—; wherein: p is 0 or 1; Y can be F or CF3; R′ is an alkylic radical C1-C5; R1, R2 can preferably be both H or the former H and the latter CH3, Rf can be a radical of (per)fluoroalkane type from 4 to 20 C atoms or of (per)fluoropolyether type; A is selected from the following ones: —H; —CH, —CH2OH; —CH2OCH2CH2OH; —CH2(OCH2CH2)n′″OR′ wherein n′″ is an integer between 2 and 15 and R′ is H, CH3, COCH3; —CONHCH2CH2OH.
    Type: Grant
    Filed: June 18, 2001
    Date of Patent: March 19, 2002
    Assignee: Ausimont S.p.A.
    Inventors: Valerio Biancardi, Enrico Marchese, Fabio Polastri
  • Coatings based on fluoropolyethers
    Patent number: 6350306
    Abstract: Use of fluorine containing polymers for the preparation of high dry formulations wherein the fluorine containing polymers are based on fluoropolyethers comprising a fluorine containing part RF and optionally an hydrogenated part RH, the bonds joining the fluorine containing part to the hydrogenated one being an ether —C—O—C—, bond the terminals T being such as to render the structure bi or polyfunctional, making thus possible the cross-linking reaction, the hydrogenated part RH not containing groups capable of linking by means of hydrogen bonds to basic acceptors.
    Type: Grant
    Filed: December 12, 1996
    Date of Patent: February 26, 2002
    Assignee: Ausimont S.p.A.
    Inventors: Claudio Tonelli, Stefano Turri, Massimo Scicchitano
  • Process for the (CFC-113a) dimerization
    Patent number: 6348634
    Abstract: A reductive dimerization process of 1,1,1-trifluoro, 2,2,2-trichloroethane (CFC-113a) with hydrogen, with formation of 1,1,1,4,4,4-hexafluoro-2,2,3,3-tetrachlorobutane and 1,1,1,4,4,4-hexafluoro-2,2-dichlorobutene, and mixtures thereof, wherein the catalyst is constituted by metal ruthenium supported on graphitized carbon obtainable by treatment of the carbon at temperatures higher than 2000° C., in inert gas, or aluminum fluoride having an high surface area.
    Type: Grant
    Filed: February 2, 2000
    Date of Patent: February 19, 2002
    Assignee: Ausimont S.p.A.
    Inventors: Paolo Cuzzato, Ornella Majaron, Francesco Pinna
  • Polyurethanes having a low friction coefficient
    Publication number: 20020016267
    Abstract: Use of fluorinated polyurethanes thermally crosslinkable for obtaining coatings having an improved friction coefficient for the dry lubrication of rubbers, plastics, metals, glass, said polyurethanes obtainable from aqueous dispersions of cationic oligourethanes having a molecular weight ≦9,000, formed by: a) polyisocyanates, having NCO functionality higher than 2, b) bifunctional hydrogenated monomers, c) bifunctional hydroxylated (per)fluoropolyethers, e) monofunctional hydroxyl or carboxylic (per)fluoropoly-ethers or monofunctional hydroxyl (per)fluoroalkanes optionally: d) hydrogenated monomers by which it is possible to insert a crosslinkable chemical function in the oligourethane; dI) hydrogen-active compounds, able to form with the NCO functions thermolabile bonds.
    Type: Application
    Filed: June 8, 2001
    Publication date: February 7, 2002
    Applicant: Ausimont S.p.A.
    Inventors: Massimo Scicchitano, Tania Trombetta, Stefano Turri
  • Fluorinated Ionomers
    Publication number: 20020014405
    Abstract: 1.
    Type: Application
    Filed: June 22, 2001
    Publication date: February 7, 2002
    Applicant: Ausimont S.p.A.
    Inventors: Vincenzo Arcella, Alessandro Ghielmi, Marco Apostolo, Julio Abusleme
  • Tetrafluoroethylene thermoprocessable copolymer microspheres
    Publication number: 20020016427
    Abstract: 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 &mgr;m and 2 mm, the bulk density being in the range 0.5 and 1.1 g/cm3.
    Type: Application
    Filed: June 25, 2001
    Publication date: February 7, 2002
    Applicant: Ausimont S.p.A.
    Inventors: Hua Wu, Francesco Morandi
  • Polymerization process of sulphonic monomers
    Publication number: 20020013439
    Abstract: A polymerization process in microemulsion of:
    Type: Application
    Filed: June 22, 2001
    Publication date: January 31, 2002
    Applicant: Ausimont S.p.A.
    Inventors: Marco Apostolo, Vincenzo Arcella
  • Chlorotrifluoroethylene copolymers
    Patent number: 6342569
    Abstract: Thermoprocessable copolymer, having a Melt Flow Index (MFI) between 0.01 and 1000, of the CTFE with an acrylic monomer having the general formula: CH2═CH—CO—O—R1   (I) wherein R1 is a hydrogenated radical from 1 to 20 C atoms, C1-C20, alkyl, linear and/or branched, or cycloalkyl radical, or R1 is H. The radical R1 can optionally contain: heteroatoms preferably Cl, O, N; one or more functional groups preferably selected from —OH, —COOH, epoxide, ester and ether; and double bonds; the amount of the comonomer of formula (I) ranges from 0.01 to 5% by moles.
    Type: Grant
    Filed: June 2, 1999
    Date of Patent: January 29, 2002
    Assignee: Ausimont S.p.A.
    Inventors: Claudia Manzoni, Julio A. Abusleme, Massimo Malavasi
  • Solvent compostitions
    Publication number: 20020010116
    Abstract: Azeotropic or near azeotropic solvent compositions, based on 1-difluoromethoxy-1,1,2,2-tetrafluoroethyl difluoromethyl ether, essentially consisting of (% by weight): 1   I) 1-difluoromethoxy 15-99 1,1,2,2-tetrafluoroethyl difluoromethyl ether (HCF2OCF2CF2OCF2H); isopentane 85-1  II) 1-difluoromethoxy 25-99 1,1,2,2-tetrafluoroethyl difluoromethyl ether (HCF2OCF2CF2OCF2H); methyl-acetate 75-1 III) 1-difluoromethoxy 35-99 1,1,2,2-tetrafluoroethyl difluoromethyl ether (HCF2OCF2CF2OCF2H); 1-bromo-propane 65-1
    Type: Application
    Filed: February 9, 2001
    Publication date: January 24, 2002
    Applicant: Ausimont S.p.A.
    Inventors: Giampiero Basile, Mario Visca, Ezio Musso
  • Refrigerating compositions based on fluoroethers and difluoromethane
    Patent number: 6337033
    Abstract: Azeotropic or near-azeotropic composition essentially consisting of: 35-99.1% by weight of CH2F2 (R 32), difluoromethane, 0.1-65% by weight of CHF2—O—CF3, 1,1,1,2,2,-pentafluorodimethylether.
    Type: Grant
    Filed: July 9, 1998
    Date of Patent: January 8, 2002
    Assignee: Ausimont, S.p.A.
    Inventors: Giampiero Basile, Ezio Musso, Sauro Girolomoni
  • Copolymers of perfluorodioxoles
    Patent number: 6335408
    Abstract: Copolymers of perfluoro-4-alkyl-1,3-dioxoles having the general formula wherein Rf is a perfluoroalkylic radical having from 1 to 5 carbon atoms, allow to prepare copolymers with Tg higher than those of the copolymers containing the same molar percentage of fluorinated dioxoles of the art.
    Type: Grant
    Filed: February 16, 1999
    Date of Patent: January 1, 2002
    Assignee: Ausimont S.p.A.
    Inventors: Antonio Russo, Walter Navarrini
  • Water based dispersions of percarboxylic acids
    Patent number: 6333300
    Abstract: Water-based dispersions of the &egr;-phthalimido peroxyhexanoic acid comprising as stabilizers copolymers of methyl-vinyl-ether with the acid and/or maleic anhydride, in 1:1 ratio with alternated structure, usable in detergent, hygienizing, cosmetic applications.
    Type: Grant
    Filed: August 2, 2000
    Date of Patent: December 25, 2001
    Assignee: Ausimont S.p.A.
    Inventors: Ugo Piero Bianchi, Claudio Troglia
  • Fluorovinyl ethers and polymers obtainable therefrom
    Publication number: 20010051753
    Abstract: Fluorovinyl ethers having the formula CFX═CXOCF2OR, wherein R is a C2-C6 linear, branched or C5-C6 cyclic (per)fluoroalkyl group, or a C2-C6, linear, branched (per)fluoro oxyalkyl group containing from one to three oxygen atoms; when R is fluoroalkyl or fluorooxyalkyl group as above defined, it can contain from 1 to 2 atoms, equal or different, selected from the following: H, Cl, Br, I; X═F, H; and homopolymers or polymers obtainable polymerizing said Fluorovinyl ethers with at least another polymerizable monomer.
    Type: Application
    Filed: April 23, 2001
    Publication date: December 13, 2001
    Applicant: Ausimont S.p.A.
    Inventor: Walter Navarrini
  • Use of (per)fluoropolyether derivatives in the treatment of substrata having a low surface energy
    Publication number: 20010051678
    Abstract: 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:
    Type: Application
    Filed: May 4, 2001
    Publication date: December 13, 2001
    Applicant: Ausimont S.p.A
    Inventor: Mario Visca
  • Ethylene fluoro-containing copolymers
    Patent number: 6329481
    Abstract: Ethylene fluoro-containing copolymers of the ECTFE and ETFE type, optionally in the presence of a third comonomer in amount comprised between 0.1 and 10% by moles, having a viscosity between 102 and 105 Pa.sec with shear rates of 1 sec−1 measured at the temperature of about 30° C. higher than the second melting temperature, and having a rheologic curve in the diagram shear viscosity/shear-rate with a slope higher than 200, calculated as ratio between the viscosity in Pa.sec and the shear-rate in sec−1 in the shear-rate range comprised between 1 and 10 sec−1, and having a processability zone with shear-rate values higher than 10 s−1.
    Type: Grant
    Filed: July 16, 1999
    Date of Patent: December 11, 2001
    Assignee: Ausimont S.p.A.
    Inventors: Julio A. Abusleme, Vincenzo Arcella, Giambattista Besana
  • Process for obtaining pentafluoroethane by tetrafluorochloroethane dismutation
    Patent number: 6323379
    Abstract: A process for obtaining pentafluoroethane HFC 125 by dismutation of gaseous tetrafluorochloroethane HCFC 124, at temperatures in the range 200°-300° C., on a trivalent chromium oxide (Cr2O3) catalyst, supported on aluminum fluoride, by feeding HF in such amount that the HCFC 124/HF molar ratio is in the range 10/1-1/1.
    Type: Grant
    Filed: May 11, 2000
    Date of Patent: November 27, 2001
    Assignee: Ausimont S.p.A.
    Inventors: Paolo Cuzzato, Letanzio Bragante, Francesco Rinaldi
  • Peroxide curable fluoroelastomers
    Patent number: 6323283
    Abstract: Curable fluoroelastomers formed from the following fluoroelastomer mixtures: a) from 20 to 70% by weight of a fluorolastomer having the Mooney viscosity value, ML (1+10) at 121° C., of greater than 60 points and containing from 0.01 to 3% by weight of iodine; b) from 0 to 70% by weight of a fluoroelastomer having the Mooney viscosity value, ML (1+10) at 121° C., in the range of 20-60 points and containing from 0.2 to 5% by weight of iodine; c) from 5 to 60% by weight of a fluoroelastomer having the Mooney viscosity value, ML (1+10) at 121° C., in the range of 1-20 points and containing an iodine percentage by weight greater than 0.3; said Mooney viscosity ML (1+10) at 121° C. determined according to the ASTM D 1646 method; where said fluoroelastomers comprise monomeric units derived from a bis-olefin.
    Type: Grant
    Filed: June 21, 1999
    Date of Patent: November 27, 2001
    Assignee: Ausimont S.p.A.
    Inventors: Marco Apostolo, Margherita Albano
  • Preservatives of formulations for topical use
    Publication number: 20010041693
    Abstract: Use as preservative in formulations for topical use containing water of a component A): a (per)fluoropolyether phosphate of general formula:
    Type: Application
    Filed: April 9, 2001
    Publication date: November 15, 2001
    Applicant: Ausimont S.p.A.
    Inventor: Giovanni Pantini
  • Fluorinated triazinic compounds
    Patent number: 6313291
    Abstract: Fluorinated triazinic compounds having the formula: wherein Z=T—Y, with T=—(CH2)q, —SO2, —CO, q= is an integer from 1 to 20; Y=O—, O(C2H4O)p—, O(CH2)n—NR—, O (CH2)n—O—, O(C3H6O)p—, NR—, S—, S(C2H4O)p—, S(C3H6O)p—; wherein R=H, alkyl from 1 to 10 C atoms; n is an integer from 1 to 20; p is an integer from 1 to 5; Rf represents a linear or branched fluoroalkyl chain or a (per)fluoropolyether chain. X is selected from: Cl; Rf—CF2—Z; CF3—Z. Use of these triazinic compounds or of their formulations for the treatment of natural or synthetic fiber textiles.
    Type: Grant
    Filed: March 2, 2000
    Date of Patent: November 6, 2001
    Assignee: Ausimont S.p.A.
    Inventors: Gabriella Carignano, Antonio Russo, Piero Savarino, Paolo Baratta, Mario Visca