Patents Assigned to Ausimont S.p.A.
  • Thermoprocessable copolymers of TFE
    Patent number: 6545111
    Abstract: 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:  wherein: Y═F, ORf, Rf wherein Rf is a perfluoroalkyl having from 1 to 5 carbon atoms; X1 and X2, equal to or diferent from each other, are —F or —CF3; (c) TFE, forming the remaining part to 100%.
    Type: Grant
    Filed: June 22, 2001
    Date of Patent: April 8, 2003
    Assignee: Ausimont S.p.A.
    Inventors: Pasqua Colaianna, Giulio Brinati, Giambattista Besana
  • Preservatives of formulations for topical use
    Patent number: 6541019
    Abstract: Use as preservative in formulations for topical use containing water of a component A): a (per)fluoropolyether phosphate of general formula: Rf—[CF2CH2—Q—L—P(O) (OZ1) (OZ2)]l  (I) wherein l=1 or 2; L is a bivalent linking group; Z1 equal to or different from Z2 selected from H, alkaline or ammonium cation, di- or tri-alkanolammonium cation, di- or tri- or tetra-alkylammonium cation; Rf is a (per)fluoropolyether chain having number average molecular weight in the range from about 400 to about 1,800.
    Type: Grant
    Filed: April 9, 2001
    Date of Patent: April 1, 2003
    Assignee: Ausimont S.p.A.
    Inventor: Giovanni Pantini
  • Fluoroelastomeric composition
    Publication number: 20030060568
    Abstract: Fluoroelastomeric compositions comprising:
    Type: Application
    Filed: May 22, 2002
    Publication date: March 27, 2003
    Applicant: AUSIMONT S.p.A.
    Inventors: Margherita Albano, Marco Apostolo, Stefano Arrigoni
  • Coagulation process of PTFE fine powders
    Publication number: 20030060597
    Abstract: A continuous coagulation process of PTFE or modified PTFE fine powders, comprising:
    Type: Application
    Filed: July 26, 2002
    Publication date: March 27, 2003
    Applicant: AUSIMONT S.P.A.
    Inventors: Hua Wu, Stefano Ferrero
  • Fluoroelastomeric compositions
    Publication number: 20030040581
    Abstract: Fluoroelastomeric compositions comprising:
    Type: Application
    Filed: May 22, 2002
    Publication date: February 27, 2003
    Applicant: AUSIMONT S.p.A.
    Inventors: Margherita Albano, Marco Apostolo, Stefano Arrigoni
  • Process for impregnating supports
    Publication number: 20030035898
    Abstract: An impregnation process of a porous support, comprising the following steps:
    Type: Application
    Filed: August 9, 2002
    Publication date: February 20, 2003
    Applicant: Ausimont S.p.A.
    Inventors: Aldo Sanguineti, Andrea Perego
  • Metal substrates coated with fluoropolymers
    Publication number: 20030031875
    Abstract: 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′.
    Type: Application
    Filed: August 1, 2002
    Publication date: February 13, 2003
    Applicant: AUSIMONT S.p.A.
    Inventors: Julio A. Abusleme, Giambattista Besana, Claudia Manzoni
  • Fluoropolymer dispersions
    Patent number: 6518352
    Abstract: Mixtures of fluoropolymer dispersion, wherein: a) a dispersion is formed by TFE (co)polymers with average particle sizes in the range 180-400 nm; b) another dispersion selected from: 1) (co)polymer dispersion of TFE; 2) thermoplastic copolymers of TFE; the average particle sizes of dispersion b) range from 20 to 60 nm; the ratio between the particle sizes of dispersion b) compared with those of dispersion a) is lower than 0.3.
    Type: Grant
    Filed: June 30, 1999
    Date of Patent: February 11, 2003
    Assignee: Ausimont S.p.A.
    Inventors: Mario Visca, Daria Lenti, Marco Malvasi, Enrico Marchese
  • Use of fluorinated compounds to confer release properties
    Patent number: 6514567
    Abstract: Use of fluorinated compounds to confer release properties to cellulosic substrata, selected from the following structures: (A) [Rf—CFY—L—O]mP(O) (O−Z+)3−m (B) (O−Z+)2P(O)[O—L—YFC—O—Rf—CFY—L—O—P(O) (O−Z+)]m′——[O—L—YFC—O—Rf—CFY—L—O]P(O) (O−Z+)2 (C) Fluorinated (meth)acrylic copolymers (D) [Rt—CF2—SO2N(U1) (U2) —O]g—P(O) (OZ)3−g wherein: m′ is an integer from 0 to 20; L is an organic group selected from —CH2—(OCH2CH2)n—, —CO—NR′—(CH2)q—, with R′═H or C1-C4 alkyl group; n=0-8, q=1-8; Z═H, alkane metal or a NR4 group with R═H or C1-C4 alkyl group; Y═F, CF3; m=1,2,3; Rf is a perfluoropolyether radical; Rt is a linear or branched perfluorocarbon radical having from
    Type: Grant
    Filed: February 28, 2001
    Date of Patent: February 4, 2003
    Assignee: Ausimont S.p.A.
    Inventors: Gabriella Carignano, Mattia De Dominicis
  • Process for purifying pentafluoroethane from chloropentafluoroethane
    Patent number: 6512150
    Abstract: A gaseous process for reducing the amount of chloropentafluoroethane (CFC 115) impurity present in pentafluoroethane (HFC 125) characterized in that pentafluroethane is allowed to flow on a catalyst formed by a trivalent chromium salt, optionally supported, at temperatures in the range 200° C.-400° C., obtaining the reaction of chloropentafluoroethane with pentafluoroethane with formation of hexafluoroethane (FC 116) and tetrafluorochloroethane (HCFC 124).
    Type: Grant
    Filed: July 17, 2000
    Date of Patent: January 28, 2003
    Assignee: Ausimont S.p.A.
    Inventors: Paolo Cuzzato, Sergio Peron
  • Crosslinked compositions of thermoplastic fluoropolymers
    Patent number: 6509073
    Abstract: Crosslinked polymer compositions obtained by subjecting to ionizing radiations compositions comprising: I) thermoprocessable copolymers of ethylene with tetrafluoroethylene (TFE) and/or chlorotrifluoroethylene (CTFE) modified with acrylic monomers of formula: CH2═CH—CO—O—R2  (a) R2 is a hydrogenated radical from 1 to 20 carbon atoms, C1-C20, alkyl, linear and/or branched radical, or cycloalkyl, or R2 is H. The radical R2 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; II) one or more cross-linking agents; III) one or more optional ingredients.
    Type: Grant
    Filed: March 17, 2000
    Date of Patent: January 21, 2003
    Assignee: Ausimont S.p.A.
    Inventors: Vincenzo Arcella, Julio A. Abusleme
  • Process for the preparation of perfluoropolyoxyalkylenes with hydroxyl end groups
    Patent number: 6509509
    Abstract: A process for preparing perfluoropolyoxyalkylenes with hydroxyl end groups having structure: T1—CFW1—O—Rf—CFW2—T2  (I) wherein: T1, T2, are selected from —CH2OH, —F, —CF3, —CF2CF3 with the proviso that at least one of T1 and T2 is —CH2OH; W1 and W2 are selected from F, CF3; Rf is a perfluoropolyoxyalkylene chain having a number average molecular weight 500-10,000 comprising one or more units of the type —CF2CF2O—, —CF2O—, —C3F6O—, —CF2(CF2)zCF2O— (z=1,2); —CR4R5CF2CF2O— with R4 and R5 selected from H, Cl, perfluoroalkyl group; said process comprising the following steps: a) adding an ester precursor having structure (I) and T1, T2 end groups selected from —F, —CF3, —CF2CF3, —COOR (R=linear or branched alkyl group having a number of C atoms from 1 to 5), with the proviso that at least one of T1 and T2 is —COOR, in a reaction mixture f
    Type: Grant
    Filed: December 29, 2000
    Date of Patent: January 21, 2003
    Assignee: Ausimont S.p.A.
    Inventors: Claudio Tonelli, Antonio Russo, Ezio Strepparola
  • PFPEs having at least an alkylether end group and respective preparation process
    Publication number: 20030013923
    Abstract: Perfluoropolyethers having structural formula
    Type: Application
    Filed: June 26, 2002
    Publication date: January 16, 2003
    Applicant: AUSIMONT S.P.A.
    Inventors: Giuseppe Marchionni, Mario Visca
  • Fluoroelastomeric compositions
    Publication number: 20030004273
    Abstract: Fluoroelastomeric compositions comprising:
    Type: Application
    Filed: May 22, 2002
    Publication date: January 2, 2003
    Applicant: AUSIMONT S.p.A.
    Inventors: Marco Apostolo, Margherita Albano, Stefano Arrigoni
  • Hydro- oil-repellent compositions
    Patent number: 6500894
    Abstract: Compositions formed of aqueous dispersions comprising a mixture of the following fluorinated polymers: A) (meth)acrylic (co)polymers containing fluorine, and B) cationic ionomers of fluorinated polyurethanes based on (per) fluoropolyethers, the weight ratio A):B), calculated on the dry product, being in the range 70:30 and 30:70.
    Type: Grant
    Filed: March 24, 2000
    Date of Patent: December 31, 2002
    Assignee: Ausimont S.p.A.
    Inventors: Daria Lenti, Tania Trombetta, Gabriella Carignano
  • Fluoroelastomers
    Patent number: 6500903
    Abstract: Curable fluoroelastomers comprising monomeric units formed by triazine iodinated derivative having general formula: wherein Y′ is independently H, Cl, F, CH3, or CF3, 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 when t′=1, or p′=0; X′ is independently H, Cl, F, alkyl or perfluoroalkyl C1-C3, preferably F; n′ is an integer between 2 and 20, preferably between 4 and 12, more preferably between 4 and 8.
    Type: Grant
    Filed: August 9, 1999
    Date of Patent: December 31, 2002
    Assignee: Ausimont S.p.A.
    Inventors: Ivan Wlassics, Marco Apostolo, Margherita Albano
  • Thermoplastic fluorinated polymers
    Publication number: 20020198325
    Abstract: A composition comprising a polymer mixture A of polymers formed by:
    Type: Application
    Filed: May 22, 2002
    Publication date: December 26, 2002
    Applicant: Ausimont S.p.A.
    Inventors: Julio A. Abusleme, Claudia Manzoni
  • PTFE-based polymers
    Publication number: 20020193495
    Abstract: 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 have an average diameter from 5 to 100 nm, preferably from 10 to 70 nm, the core-shell particles having an average diameter from 10 to 170 nm, preferably from 20 to 100 nm.
    Type: Application
    Filed: March 15, 2002
    Publication date: December 19, 2002
    Applicant: Ausimont S.p.A.
    Inventors: Giovanna Palamone, Valery Kapeliouchko
  • NEW PERFLUORODIOXOLES
    Publication number: 20020183471
    Abstract: Perfluoro-4-alkyl-1,3-dioxoles having the general formula 1
    Type: Application
    Filed: June 15, 2001
    Publication date: December 5, 2002
    Applicant: AUSIMONT S.P.A
    Inventors: Antonio Russo, Walter Navarrini
  • Amorphous (per) fluorinated polymers
    Publication number: 20020183459
    Abstract: Amorphous (per) fluorinated polymers containing an amount lower than 0.05 mmoles/kg polymer of each of the following ionic end groups: COF, COOH, their amidic derivatives, esters or salts, when the used determination method for said end groups is the IR spectroscopy by Nicolet® Nexus FT-IR equipment (256 scannings, resolution 2 cm−1).
    Type: Application
    Filed: May 2, 2002
    Publication date: December 5, 2002
    Applicant: AUSIMONT S.p.A.
    Inventors: Vito Tortelli, Pierangelo Calini