Patents Assigned to Ausimont S.p.A.
  • Multilayers of polyamides and CPVC
    Publication number: 20020182424
    Abstract: 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 20-300 &mgr;eq/g.
    Type: Application
    Filed: May 31, 2002
    Publication date: December 5, 2002
    Applicant: AUSIMONT S.p.A.
    Inventors: Julio A. Abusleme, Claudia Manzoni, Giambattista Besana
  • Additives for hydrogenated resins
    Publication number: 20020177651
    Abstract: Additives for hydrogenated resins obtainable by using the following components:
    Type: Application
    Filed: March 12, 2002
    Publication date: November 28, 2002
    Applicant: Ausimont S.p.A.
    Inventors: Stefano Turri, Aldo Sanguineti, Massimo Scicchitano
  • Process for the preparation of fluoropolyoxyalkylenes having one end group -CH2OH and the other end group containing chlorine
    Publication number: 20020173679
    Abstract: A process to obtain fluoropolyoxyalkylenes having the structure:
    Type: Application
    Filed: May 16, 2002
    Publication date: November 21, 2002
    Applicant: AUSIMONT S.P.A.
    Inventors: Antonio Russo, Claudio Tonelli
  • (Co)polymerization process of fluoro-containing monomers for obtaining hydrogen containing polymers
    Patent number: 6482882
    Abstract: Polymerization process of unsaturated pefluoromonomers, fluoro-containing monomers and optionally in the presence of hydrogen containing olefins, for obtaining polymers contaning hydrogen and fluorine, which utilizes a microemulsion comprising the following components: (a) water; (b) a fluoropolyoxyalkylene having hydrogen-containing end groups and/or hydrogen-containing repeating units; (c) a fluorine-free organic radicalic initiator for the polymerization of fluoro-containing monomers, soluble in component (B); (d) a fluoro-containing surfactant.
    Type: Grant
    Filed: May 24, 2000
    Date of Patent: November 19, 2002
    Assignee: Ausimont S.P.A.
    Inventors: Julio A. Abusleme, Alba Chittofrati
  • Iodination process
    Publication number: 20020169276
    Abstract: A synthetic process of perfluoropolyether iodides, by reaction with LiI of monoacyl- or diacyl-halides of perfluoropolyethers, having number average molecular weight from 200 to 3,000, and having the following structure:
    Type: Application
    Filed: May 9, 2002
    Publication date: November 14, 2002
    Applicant: AUSIMONT S.P.A.
    Inventors: Ivan Wlassics, Vito Tortelli
  • Multilayer composition comprising fluoropolymers and hydrogenated polymers
    Publication number: 20020168529
    Abstract: A multilayer composition comprising:
    Type: Application
    Filed: September 14, 2001
    Publication date: November 14, 2002
    Applicant: Ausimont S.p.A.
    Inventors: Julio A. Abusleme, Claudia Manzoni
  • Fine powders of polytetrafluoroethylene
    Patent number: 6479591
    Abstract: Fine powders of modified PTFE having a “core-shell” structure; the fine powder being formed by: a “core” of tetrafluoroethylene (TFE) modified by one or more monomers selected from: a) dioxoles; b) one or more perfluorinated monomers which cyclize during the polymerization; a “shell” of TFE modified by perfluoropropene (PFP); the amount, referred to the total core+shell particle, of comonomers 1) in the “core” being in the range 0.01-0.06% by weight; the amount, referred to the total core+shell particle, of perfluoropropene 2) in the “shell” being in the range 0.002-0.06% by weight; the thermal instability index (TII) of the fine powder being equal to or lower than 5, determined according to ASTM D4895.
    Type: Grant
    Filed: July 19, 2001
    Date of Patent: November 12, 2002
    Assignee: Ausimont S.p.A.
    Inventors: Valery Kapeliouchko, Enrico Marchese
  • Process for eliminating chlorine from chlorofluorocarbons
    Patent number: 6479717
    Abstract: A gaseous process for eliminating chlorine atoms from a chlorofluorocarbon (CFC) of formula CnFxCly, wherein n is an integer from 1 to 3 and x+y=2n+2, wherein said compound is reacted with an hydrofluorocarbon of formula Cn′Fx′Hy′, wherein n′, x′, y′ are as above defined, in the presence of a fluorination catalyst in solid phase at temperatures in the range 200° C.-400° C.
    Type: Grant
    Filed: July 17, 2000
    Date of Patent: November 12, 2002
    Assignee: Ausimont S.p.A.
    Inventors: Paolo Cuzzato, Sergio Peron
  • Crosslinkable modified fluorinated polymers
    Patent number: 6476150
    Abstract: The present invention is related to melt-processable thermally crosslinkable compositions consisting of I) thermoprocessable copolymers of ethylene (E) with tetrafluoroethylene (TFE) and/or chlorotrifluoroethylene (CTFE), and acrylic monomers of formula CH2═CH—CO—O—R2 (a); and II) one or more crosslinking agents.
    Type: Grant
    Filed: March 17, 2000
    Date of Patent: November 5, 2002
    Assignee: Ausimont S.p.A.
    Inventors: Julio A. Abusleme, Giambattista Besana, Giandomenico Vita
  • Semipermeable porous membranes of semi-crystalline fluoropolymers
    Publication number: 20020156138
    Abstract: Semipermeable porous membranes having an average pore diameter in the range 0.
    Type: Application
    Filed: February 27, 2002
    Publication date: October 24, 2002
    Applicant: Ausimont S.p.A.
    Inventors: Patrizia Maccone, Paolo Fossati
  • Perfluorodioxoles
    Patent number: 6469185
    Abstract: 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: June 15, 2001
    Date of Patent: October 22, 2002
    Assignee: Ausimont S.p.A.
    Inventors: Antonio Russo, Walter Navarrini
  • Amorphous fluoropolymer manufactured articles
    Patent number: 6469116
    Abstract: Amorphous fluoropolymer selfsupported manufactured articles obtained by casting from solution in a single step, characterized in that they are obtained by the polymerization of a structure (I), optionally and preferably with a monomer having a structure (II): CF2=CY1Y2  (II) wherein: Rf is a C1-C5 perfluoroalkyl radical; X1 and X2 are selected from F and CF3; Y1 and Y2 are selected from F, Cl, H, CF3, ORf; having refractive index lower than 1.35, transmittance higher than 90% in the radiation field 300-2,000 nm wave length, and thickness higher than 20-25 &mgr;m.
    Type: Grant
    Filed: June 28, 1999
    Date of Patent: October 22, 2002
    Assignee: Ausimont S.p.A.
    Inventors: Patrizia Maccone, Vincenzo Arcella, Giuseppina Grippaldi, Enrico Drioli
  • Treatment of glass substrata with (per) fluoropolyether compounds
    Publication number: 20020148999
    Abstract: Use in the treatment of glass substrata of mono- and bi-functional (per)fluoropolyether compounds having the following structures:
    Type: Application
    Filed: February 5, 2002
    Publication date: October 17, 2002
    Applicant: Ausimont S.p.A.
    Inventors: Mattia De Dominicis, Gabriella Carignano
  • Process to obtain CFC 113a from CFC 113
    Publication number: 20020151755
    Abstract: 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.
    Type: Application
    Filed: February 12, 2002
    Publication date: October 17, 2002
    Applicant: Ausimont S.p.A.
    Inventors: Paolo Cuzzato, Letanzio Bragante
  • Porous hydrophilic membranes
    Publication number: 20020144944
    Abstract: 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).
    Type: Application
    Filed: February 25, 2002
    Publication date: October 10, 2002
    Applicant: Ausimont S.p.A.
    Inventors: Vincenzo Arcella, Alessandro Ghielmi
  • Treatment of metal substrata with (per) fluoropolyether compounds
    Publication number: 20020146576
    Abstract: Use in the treatment of metal substrata and their alloys, of mono- and bifunctional (per)fluoropolyether compounds having the following structures:
    Type: Application
    Filed: February 5, 2002
    Publication date: October 10, 2002
    Applicant: Ausimont S.p.A.
    Inventors: Mattia De Dominicis, Gabriella Carignano
  • Porous hydrophilic membranes
    Publication number: 20020144899
    Abstract: Porous hydrophilic membranes comprising a porous inert support on which an ionomer is deposited, said membranes being characterized in that they have an ionic conductivity and a water permeability higher than 1 l/(h.m2.Atm).
    Type: Application
    Filed: February 25, 2002
    Publication date: October 10, 2002
    Applicant: Ausimont S.p.A.
    Inventors: Vincenzo Arcella, Alessandro Ghielmi
  • Compositions for coatings based on (per) fluoropolyethers
    Publication number: 20020147295
    Abstract: 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.
    Type: Application
    Filed: January 12, 2001
    Publication date: October 10, 2002
    Applicant: Ausimont S.p.A.
    Inventors: Stefano Turri, Carlo Pogliani
  • Lubricant compositions based on PTFE
    Patent number: 6461998
    Abstract: Use as lubricants having a low friction coefficient and an improved noise reduction among moving mechanical parts of dispersions comprising a fluorinated oil and a (per)fluoropolymer, said compositions dilutable with water and obtainable by mixing: a) a fluorinated oil having a (per)fluoropolyether structure, b) a concentrated aqueous dispersion of a (per)fluoropolymer (component b′), stabilized by a non ionic and non fluorinated surfactant, c) a fluorinated and/or hydrogenated surfactant, d) water.
    Type: Grant
    Filed: March 14, 2001
    Date of Patent: October 8, 2002
    Assignee: Ausimont S.p.A.
    Inventors: Daria Lenti, Gabriella Carignano
  • Foaming agents
    Patent number: 6458862
    Abstract: Hydrofluoropolyether foaming agents selected from: difluoromethoxy-bis(difluoromethyl ether) of formula HCF2OCF2OCF2H; and/or 1-difluoromethoxy-1,1,2,2-tetrafluoroethyl difluoromethyl ether of formula HCF2OCF2CF2OCF2H, and their use in polyurethane foams.
    Type: Grant
    Filed: August 9, 1999
    Date of Patent: October 1, 2002
    Assignee: Ausimont S.p.A.
    Inventors: Ezio Musso, Mario Visca, Giampiero Basile