Patents Assigned to Solvay Solexis
  • Polymerization process
    Publication number: 20070015888
    Abstract: The invention pertains to a polymerization process including polymerizing at least one fluorinated monomer in the presence of a radical initiator and a surfactant in a polymerization medium containing carbon dioxide to provide a polymer product, characterized in that the surfactant is a functional (per)fluoropolyether, which is a polymer comprising recurring units (R1) and at least one functional group having a heteroatom other than fluorine, said recurring units having at least one ether linkage in the main chain and at least one fluorine atom (fluoropolyoxyalkene chain).
    Type: Application
    Filed: June 29, 2006
    Publication date: January 18, 2007
    Applicant: SOLVAY SOLEXIS S.P.A.
    Inventors: Marco Apostolo, Valeri Kapeliouchko, Alessandro Galia, Onofrio Scialdone, Giuseppe Filardo
  • Hydrofluoroethers having at least one hydrogenated-OCFX'CHend group wherein X?=F, CF and their preparation process
    Patent number: 7161030
    Abstract: Hydrofluoroethers of formula: T-CFX?—O—Rf—CFX-T???(II) wherein: T=CH3; X, X?, equal to or different from each other, are selected between F, CF3; T00?=F, Cl, H, C1–C3 perfluoroalkyl, CH3, CH2OH, COCl, CHO, CO2H; Rf is a perfluoroalkylene or a perfluoropolyoxyalkylene and respective preparation process by reduction with hydrogen in the presence of a platinum catalyst supported on metal fluorides of the corresponding compounds with at least one —COCl end group.
    Type: Grant
    Filed: July 31, 2003
    Date of Patent: January 9, 2007
    Assignee: Solvay Solexis S.p.A.
    Inventors: Rosaldo Picozzi, Antonella Di Meo, Claudio Tonelli
  • Process for preparing (per) fluorohalogenethers
    Patent number: 7157600
    Abstract: A process for preparing (per)fluorohalogenethers containing the —SO2F group, having general formula (I): FSO2—R—CF2OCAF—CA?F2??(I) wherein: A and A?, equal to or different from each other, are Cl or Br; R has the following meanings: a (per)fluorinated, preferably perfluorinated, substituent, optionally containing one or more oxygen atoms; by reaction of carbonyl compounds having formula (II): FSO2—R—COF??(II) wherein R is as above; in liquid phase with elemental fluorine and with olefinic compounds having formula (III): CAF?CA?F??(III) wherein A and A? are as above, operating at temperatures from ?120° C. to ?20° C., optionally in the presence of a solvent inert under the reaction conditions.
    Type: Grant
    Filed: March 10, 2004
    Date of Patent: January 2, 2007
    Assignee: Solvay Solexis S.p.A.
    Inventors: Vito Tortelli, Pierangelo Calini, Stefano Millefanti
  • Process for preparing hydrofluoroethers
    Patent number: 7141704
    Abstract: Process for obtaining hydrofluoroethers of formula (I): A-(Rf)n0—CF(Rf1)—O—Rh??(I) wherein a mono- or bifunctional carbonyl compound of formula (IV): B—Rf—C(O)Rf1??(IV) is reacted with at least one equivalent of a fluoroformate of formula (III) R—OC(O)F??(III) in the presence of an ion fluoride compound (catalyst) and of a dipolar aprotic organic compound, liquid and inert under the reaction conditions.
    Type: Grant
    Filed: March 26, 2004
    Date of Patent: November 28, 2006
    Assignee: Solvay Solexis S.P.A.
    Inventors: Walter Navarrini, Marco Galimberti, Giovanni Fontana
  • Aqueous compositions of perfluoropolyether phosphates and use thereof to confer oleo-repellence to paper
    Patent number: 7141140
    Abstract: Aqueous compositions of (per)fluoropolyether phosphates of formula: T—O—[Rf—CFY—L—O]P(O)(O?Z+)(OH); ??(A) and/or (OH)m(O?Z+)2-mP(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-m(OH)m ??(B) and use thereof to confer oleo-repellence to the paper by means of the size-press method.
    Type: Grant
    Filed: January 13, 2003
    Date of Patent: November 28, 2006
    Assignee: Solvay Solexis, S.p.A.
    Inventors: Patrizia Maccone, Fiorenza D'Aprile, Mario Visca
  • Perfluorodiacylperoxides as polymerization initiators
    Patent number: 7135599
    Abstract: Perfluorodiacylperoxides having the following structures: wherein: when Rf is F, Rf?, Rf? are both —CF3; when Rf is —CF3, Rf?, Rf? are C1–C3 linear or branched perfluoro-oxyalkyl groups; said perfluorodiacylperoxides being such as to meet the following proviso: the thermal decomposition constants Kd (sec?1) in the presence of water do not undergo substantial variations with respect to the thermal decomposition constants in absence of water.
    Type: Grant
    Filed: April 27, 2004
    Date of Patent: November 14, 2006
    Assignee: Solvay Solexis, S.p.A.
    Inventors: Walter Navarrini, Marco Galimberti
  • Liquid-liquid extraction of polar organic substances from their aqueous solutions with fluorinated extracting liquids
    Patent number: 7132051
    Abstract: A liquid-liquid extraction process of ketones, alcohols, aldehydes, alkyl esters of carboxylic acids, carboxylic acids, ethers, amines and heterocyclic compounds, from their aqueous solutions, comprising the addition under stirring to said aqueous solutions of a fluorinated extracting liquid selected from A) hydrofluoropolyethers, B) hydrofluorocarbons, C) hydrofluoroethers, or mixtures thereof, with formation of an aqueous phase and of an organic phase; the separation of the organic phase from the aqueous phase; the fractional distillation of the organic phase to separate the polar organic substance from the extractant.
    Type: Grant
    Filed: March 11, 2003
    Date of Patent: November 7, 2006
    Assignee: Solvay Solexis, S.p.A.
    Inventors: Giuseppe Marchionni, Ugo De Patto, Marco Avataneo
  • Preparation of perfluoropolyethers having at least one —CHOH or —CH(CF)OH end group
    Patent number: 7132574
    Abstract: A process for preparing perfluoropolyethers having at least one —CH2OH or —CH(CF3)OH end group by reaction of the corresponding pefluoropolyethers having at least one carboxylic —COOH or ketonic —(CF3)C?O end group with gaseous hydrogen, between 80° C. and 140° C., in the presence of hydrogenation catalysts.
    Type: Grant
    Filed: May 7, 2004
    Date of Patent: November 7, 2006
    Assignee: Solvay Solexis S.p.A.
    Inventors: Rosaldo Picozzi, Claudio Tonelli
  • VDF polymerization process
    Patent number: 7122608
    Abstract: VDF polymerization process, optionally modified with small amounts of one or more fluoro-containing comonomers, carried out in the presence of a microemulsion comprising a (per) fluoropolyether having neutral end groups, having number average molecular weight between 400 and 3000, and a surfactant based on perfluoropolyethers with salified acid end groups, said surfactant having a number molecular weight Mn comprised between 400–600 and having a distribution of molecular weights such that fractions having a number average molecular weight higher than 700 are not present, or are in amount less than 5% by weight.
    Type: Grant
    Filed: June 30, 1997
    Date of Patent: October 17, 2006
    Assignee: Solvay Solexis, S.p.A.
    Inventors: Giulio Brinati, Paolo Lazzari, Vincenzo Arcella
  • PFPEs having at least an alkylether end group and respective preparation process
    Patent number: 7115783
    Abstract: Perfluoropolyethers having structural formula R1O—(CF2O)n—(CF2CF2O)mR2??(I) wherein: R1 is —CH3 or —C2H5; R2 is equal to R1 or —CF2H n is integer from 1 to 100; m is an integer from 1 to 100 or, when R2 is —CF2H, in can also be 0; the oxyfluoro-alkylene units —(CF2CF2O)— and —(CF2O)— are statistically distributed along the polymer chain.
    Type: Grant
    Filed: July 15, 2005
    Date of Patent: October 3, 2006
    Assignee: Solvay Solexis, S.p.A.
    Inventors: Giuseppe Marchionni, Mario Visca
  • Peroxide-curable fluoroelastomers
    Patent number: 7101943
    Abstract: Fluoroelastomers, curable by peroxidic route, obtainable by polymerizing the following monomers: a) C2–C8 hydrogenated fluoroolefins; b) fluorovinylethers of general formula: CFX?CXOCF2OR ??(I) c) bis-olefins having general formula: RI1RI2C?CRI3—Z—CRI4?CRI5RI6 ??(IA) and optionally: d) one or more fluorinated olefinic comonomers selected from perfluoroalkylvinylethers (PAVE) CF2?CFOR2f, perfluorooxyalkylvinylethers CF2?CFOXa, e) C2–C8 perfluorolefins; f) one or more C2–C8 non fluorinated olefinic comonomers said fluoroelastomers comprising iodine and/or bromine atoms in the chain and/or in end position.
    Type: Grant
    Filed: October 16, 2002
    Date of Patent: September 5, 2006
    Assignee: Solvay Solexis S.p.A.
    Inventors: Stefano Arrigoni, Margherita Albano
  • Process for preparing fluoropolymer dispersions
    Patent number: 7101925
    Abstract: A process to substantially remove the fluorinated anionic surfactants comprising the following steps: a) addition to a fluoropolymer dispersion of a nonionic surfactant, in an amount in the range 1.5%–25% by weight, referred to the fluoropolymer weight; b) addition to the dispersion of a salt, soluble in water and not giving precipitates in the dispersion under the use conditions; c) contact of the dispersion with a basic anionic exchanger; d) separation of the dispersion from the basic anionic exchanger; before step d) the dispersion being filterable on a 180 micrometer net and successively on a 10 micrometer net.
    Type: Grant
    Filed: January 12, 2005
    Date of Patent: September 5, 2006
    Assignee: Solvay Solexis, S.p.A.
    Inventors: Marco Malvasi, Valeri Kapeliouchko
  • Process for activation of alf3 based catalysts and process for isomerising hydrochlorofluorocarbons
    Publication number: 20060189834
    Abstract: An activated AlF3 based catalyst is produced by treating a crude AlF3 for more than 5 hours with a gas stream at a temperature from 300° C. to 450° C.
    Type: Application
    Filed: July 27, 2004
    Publication date: August 24, 2006
    Applicant: Solvay Solexis S.P.A.
    Inventors: Paolo Cuzzato, Letanzio Bragante
  • Amorphous perfluorinated polymers
    Patent number: 7091295
    Abstract: Use of amorphous perfluorinated polymers for preparing transparent films at 157 nm, said perfluorinated polymers being free from unstable ionic end groups COF, COOH or their amidic derivatives, esters or salts, said polymers formed by cyclic units deriving from perfluorodioxoles of formula: wherein R?F is equal to RF or ORF wherein RF is a perfluoroalkyl radical having 1–5 carbon atoms; X1 and X2, equal to or different from each other, are F, CF3; said polymers optionally containing units deriving from perfluorinated comonomers optionally containing oxygen atoms; in said polymers the cyclic units deriving from the perfluorodioxoles of formula (IA) being ?95% by moles.
    Type: Grant
    Filed: April 30, 2004
    Date of Patent: August 15, 2006
    Assignee: Solvay Solexis S.p.A.
    Inventors: Vincenzo Arcella, Marco Apostolo, Francesco Triulzi
  • Additives for perfluoropolyether oils
    Patent number: 7081440
    Abstract: Use as stabilizers of perfluoropolyether oils at high temperatures, higher than 200° C.
    Type: Grant
    Filed: April 17, 2003
    Date of Patent: July 25, 2006
    Assignee: Solvay Solexis S.p.A.
    Inventors: Walter Navarrini, Patrizia Maccone
  • Multilayers of fluoropolymers with chlorinated polyvinylchloride
    Publication number: 20060141263
    Abstract: Multilayers comprising at least one laminate formed in sequence by the following layers: A) one thermoprocessable fluoropolymer layer comprising units deriving from vinylidenfluoride (VDF); B) one polyamide layer blended with 0.01%-5% by weight of a diamine or one polyamide layer having at least 20 ?eq/g of —NH2 groups, or one thermoprocessable polymer layer containing (—COO—) units and/or —CN groups; and C) one layer based on chlorinated polyvinylchloride (CPVC) containing from 58% to 75% by weight of chlorine.
    Type: Application
    Filed: February 21, 2006
    Publication date: June 29, 2006
    Applicant: Solvay Solexis S.P.A.
    Inventors: Julio Abusleme, Claudia Manzoni, Giambattista Besana
  • Aluminium fluoride
    Publication number: 20060116537
    Abstract: Aluminium fluoride obtainable by impregnation of aluminium fluoride having a fluorine content not less than 90% with an aqueous solution containing one or more alkali metal salts.
    Type: Application
    Filed: December 23, 2003
    Publication date: June 1, 2006
    Applicant: Solvay Solexis S.P.A.
    Inventor: Paolo Cuzzato
  • Use of mono- and bifunctional (per) fluoropolyether derivatives in the treatment of ceramic materials
    Patent number: 7045016
    Abstract: Use in the treatment of ceramic materials for obtaining an easy stain removal, of mono- and bifunctional (per)fluoropolyether derivatives having the following structures: [Rf—CFY-L-O]mP(O)(O?Z+)3-m??(A) (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??(B) Rf—CFY-L-W??(C) W-L-YFC—O—Rf—CFY-L-W??(D) wherein m? is an integer from 0 to 20, preferably from 0 to 4; 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, preferably 1–3, q=1–8, preferably 1–3; Z=H, alkaline metal or NR4 group with R=H or C1–C4 alkyl group; Y=F, CF3; m=1,2,3, preferably 1,2; W is a —Si(R1)?(OR2)3-? group with ?=0,1,2, R1 and R2 equal to or different from each other are C1–C6 alkyl groups, optionally containing one or more ether O, C6–C10 aryl groups, C7–C12 alkyl-aryl or aryl-alkyl groups.
    Type: Grant
    Filed: February 28, 2001
    Date of Patent: May 16, 2006
    Assignee: Solvay Solexis, S.p.A.
    Inventors: Mattia De Dominicis, Gabriella Carignano
  • TFE copolymers
    Patent number: 7037991
    Abstract: Copolymers formed by TFE and FMVE containing FMVE in percent by moles from 2.5% to 8%; the % TFE moles being the complement to 100% of the FMVE moles.
    Type: Grant
    Filed: July 15, 2003
    Date of Patent: May 2, 2006
    Assignee: Solvay Solexis S.p.A.
    Inventors: Pasqua Colaianna, Giulio Brinati, Vincenzo Arcella
  • Multilayers of fluoropolymers with chlorinated polyvinylchloride
    Patent number: 7033671
    Abstract: Multilayers comprising at least one laminate formed in sequence by the following layers: A) one thermoprocessable fluoropolymer layer comprising units deriving from vinylidenfluoride (VDF); B) one polyamide layer blended with 0.01%–5% by weight of a diamine or one polyamide layer having at least 20 ?eq/g of —NH2 groups, or one thermoprocessable polymer layer containing (—COO—) units and/or —CN groups; and C) one layer based on chlorinated polyvinylchloride (CPVC) containing from 58% to 75% by weight of chlorine.
    Type: Grant
    Filed: January 21, 2003
    Date of Patent: April 25, 2006
    Assignee: Solvay Solexis, S.p.A.
    Inventors: Julio Abusleme, Claudia Manzoni, Giambattista Besana