Fluorine Patents (Class 568/615)
-
Patent number: 7214833Abstract: A process to obtain perfluoropolyethers comprising: a) synthesis of peroxidic perfluoropolyethers by one of the following reactions: al) TFE photooxidation, in solvents selected between perfluorocarbons and (mono)hydrofluorocarbons, of general formula: CyF(2y+2?X)Hx ??(II) ?wherein y is an integer from 2 to 4; x is an integer equal to 0 or 1; in the present of fluorine diluted with an inert gas; or a2) TFE oxidation using as radical initiator fluorine or hypofluorites of formula RfOF??(III) ?(Rf perfluoroalkyl radical from 1 to 3 carbon atoms), operating from ?40° C. to ?100° C. at a pressure comprised between 0 and 12 bar; b) thermal treatment of the product obtained in a) at a temperature from 1500° C. to 250° C.; c) treatment with elemental fluorine of the polymer obtained in step b) at temperatures from 100° C. to 250° C., or by treatment with fluorine in the presence of UV radiations, operating at temperatures from ?50° C. to 120° C.Type: GrantFiled: September 30, 2004Date of Patent: May 8, 2007Assignee: Solvay Solexis, S.p.A.Inventors: Giuseppe Marchionni, Elvira Pagano, Pier Antonio Guarda
-
Patent number: 7208638Abstract: A process for preparing (per)fluorohalogenethers having general formula: wherein: A and A?, equal to or different from each other, are selected among Cl, Br and H; m=1, 2; n=0, 1; R? is a C1 to C3 (per)fluoroalkyl substituent; R is a (per)fluoropolyether substituent; z and z? are 1 or zero, X1=F, CF3; by reaction of carbonyl compounds having formula: (R?)n—C(O)(F)q(CFX1(CF2)z(CH2)z?OR1)??(II) wherein: R? and n are as above; q=0, 1; X1=F or CF3; z=0 or 1; R1 is a (per)fluoropolyether substituent; in liquid phase, with elemental fluorine and with olefinic compounds of formula: CAF=CA?F2 ??(III) wherein A and A? are as above, at temperatures from ?120° C. to ?20° C., preferably from ?100° C. to ?40° C.Type: GrantFiled: January 28, 2005Date of Patent: April 24, 2007Assignee: Solvay Solexis, S.p.A.Inventors: Vito Tortelli, Stefano Millefanti, Pierangelo Calini
-
Patent number: 7176331Abstract: The present application provides a process to produce fluorinated vinyl ether by reacting a 2-alkoxypropionyl fluoride with a metal carbonate under anhydrous conditions in a stirred bed reactor at a temperature above the decarboxylation temperature of an intermediate carboxylate to produce a fluorinated vinyl ether. The process is carried out in the absence of solvent. With the process described, fluorinated vinyl ether of a high purity can be obtained in a high throughput manner.Type: GrantFiled: June 30, 2005Date of Patent: February 13, 2007Assignee: 3M Innovative Properties CompanyInventor: Miguel Antonio Guerra
-
Patent number: 7161030Abstract: 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: GrantFiled: July 31, 2003Date of Patent: January 9, 2007Assignee: Solvay Solexis S.p.A.Inventors: Rosaldo Picozzi, Antonella Di Meo, Claudio Tonelli
-
Patent number: 7160967Abstract: 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: GrantFiled: April 27, 2005Date of Patent: January 9, 2007Assignee: Solvey Solexis S.p.A.Inventor: Walter Navarrini
-
Patent number: 7148385Abstract: A perfluoropolyether and a composition comprising the perfluoropolyether are provided in which the perfluoropolyether comprises at least one bromine or iodine atom at the primary position of the perfluoropolyether. Also provided is a process for producing the composition in which the process comprises contacting a perfluoropolyether acid fluoride moiety with a metal bromide or metal iodide or a suitable polyether secondary iodide under a condition sufficient to effect the production of a perfluoropolyether comprising at least one bromine or iodine at the primary position.Type: GrantFiled: July 25, 2003Date of Patent: December 12, 2006Assignee: E. I. du Pont de Nemours and CompanyInventors: Jon L. Howell, Erik W. Perez, Alfred Waterfeld, Chadron Mark Friesen, Joseph Stuart Thrasher, Ireneusz Nowak
-
Patent number: 7141704Abstract: 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: GrantFiled: March 26, 2004Date of Patent: November 28, 2006Assignee: Solvay Solexis S.P.A.Inventors: Walter Navarrini, Marco Galimberti, Giovanni Fontana
-
Patent number: 7132574Abstract: 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: GrantFiled: May 7, 2004Date of Patent: November 7, 2006Assignee: Solvay Solexis S.p.A.Inventors: Rosaldo Picozzi, Claudio Tonelli
-
Patent number: 7125834Abstract: This invention provides the following: an amphiphilic functional substance with lipophilicity, affinity for supercritical CO2, and if necessary hydrophilicity comprising an oligoolefin chain and a perfluoroalkyl group(s) at a single end thereof or at both ends thereof with or without the intervention of a poly(oxyalkylene) chain, which enables the utilization of supercritical CO2 as a reaction medium; a photopolymerizable functional substance comprising an oligoolefin chain and a reversible photopolymerization/dissociation group(s) at a single end thereof or at both ends thereof and a functional substance comprising a photo- and/or thermodissociable polymer obtained by photopolymerization of the aforementioned photopolymerizable functional substance, which can be utilized as recycle polymers; a hydrolyzable functional substance comprising a polymer obtained by chain-elongating plural oligoolefin chains through ester linkages, which can be utilized as a recycle polymer; and a functional substance capable of foType: GrantFiled: November 22, 2001Date of Patent: October 24, 2006Assignee: San-Ei Kougyou CorporationInventor: Takashi Sawaguchi
-
Patent number: 7115783Abstract: 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: GrantFiled: July 15, 2005Date of Patent: October 3, 2006Assignee: Solvay Solexis, S.p.A.Inventors: Giuseppe Marchionni, Mario Visca
-
Patent number: 7019177Abstract: A process for preparing (per)fluorohalogenethers having general formula (II): R?CF2OCFA-CA?F2??(II) wherein:— A and A?, equal to or different from each other, are H, Cl or Br but they cannot be both H; R? has the following meanings: RO—, wherein R is a (per)fluorinated substituent, selected from the following groups: linear or branched C1–C20 alkyl; C3–C7 cycloalkyl; aromatic, C6–C10 arylalkyl or alkylaryl; C5–C10 heterocyclic or alkylheterocyclic; or a perfluoropolyether substituent T-Rf— wherein T=—OCF2OCFA-CA?F2, —OCF2XI, wherein XI=F, CF3, Cl; Rf is a perfluorooxyalkylene chain; by reaction of carbonyl compounds having formula R?COF (III) wherein R?=RO—, or R?=Q-Rf— wherein Q=—OCOF, —OCF2XI; in liquid phase with elemental fluorine and with olefinic compounds having formula CAF=CA?F (IV), at temperatures from ?120° C. to ?20° C.Type: GrantFiled: January 29, 2004Date of Patent: March 28, 2006Assignee: Solvay Solexis, S.p.A.Inventors: Vito Tortelli, Pierangelo Calini
-
Patent number: 6989432Abstract: A copolymer with recurring constituent units derived by polymerizing tetrahydrofuran, ethylene oxide and at least one additional cyclic ether that can be substituted or unsubstituted that decreases the hydrophilicity imparted to the copolymer by the ethylene oxide.Type: GrantFiled: January 8, 2003Date of Patent: January 24, 2006Assignee: Invista North America S.a.r.l.Inventors: Gerfried Pruckmayr, Charles Francis Palmer, Jr., Gary Arthur Lodoen
-
Patent number: 6984759Abstract: Process for the perfluoropolyether preparation having reactive end groups —CH2NH2, —CHO, —CH2OH, by reduction of the corresponding perfluoropolyethers having —CN, —COCl, —CHO end groups by using gaseous hydrogen in the presence of a catalyst constituted by Pd, Rh, or Ru, supported on solid metal fluorides, at a temperature from 20° C. to 150° C. and under a pressure between 1 and 50 atm.Type: GrantFiled: July 31, 2003Date of Patent: January 10, 2006Assignee: Solvay Solexis S.p.A.Inventors: Antonella Di Meo, Rosaldo Picozzi, Claudio Tonelli
-
Patent number: 6972317Abstract: Monofunctional polyfluorooxetane oligomers and polymers are prepared by the cationic polymerization of fluorooxetane monomers with a monoalcohol. The fluorooxetane oligomers or polymers can be copolymerized with generally cyclic ethers. Alternatively, the polyfluorooxetane oligomer or polymer having a single hydroxyl end group can be functionalized with a variety of compounds so as to yield a functional end group such as an acrylate, a methacrylate, an allylic, an amine, etc., with the functionalized oligomer or polymer being suitable for use in radiation curable or thermal curable coating compositions. These functionalized polymers can be copolymerized and cured to provide improvements in wetting and surface properties that have previously been provided by migratory chemicals such as waxes and oils.Type: GrantFiled: March 28, 2002Date of Patent: December 6, 2005Assignee: OMNOVA Solutions Inc.Inventors: Raymond J. Weinert, Guillermina C. Garcia, Aslam Malik, Roland Carlson, Robert E. Medsker
-
Patent number: 6963013Abstract: A process for making 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 by polymerizing said Fluorovinyl ethers with at least another polymerizable monomer.Type: GrantFiled: April 23, 2001Date of Patent: November 8, 2005Assignee: Solvay Solexis Sp.A.Inventor: Walter Navarrini
-
Patent number: 6936722Abstract: (Per)haloethers having formula: X—(Rf)L—O—CF2CF2—O—CX1X2—CFX3X4??(I), process for obtaining them and hypofluorites usable in the synthesis of said (per)haloethers.Type: GrantFiled: February 4, 2003Date of Patent: August 30, 2005Assignee: Solvay Solexis S.p.A.Inventors: Giovanni Fontana, Walter Navarrini
-
Patent number: 6923921Abstract: Described are fluorinated polyether compounds having a molecular weight range between 750 g/mol and 4000 g/mol where such polyether compounds are intermediates used in fluorinated compositions for treating various substrates.Type: GrantFiled: December 30, 2002Date of Patent: August 2, 2005Assignee: 3M Innovative Properties CompanyInventors: Richard M. Flynn, Daniel R. Vitcak, Richard S. Buckanin, Cheryl L. S. Elsbernd
-
Patent number: 6891013Abstract: The present invention provides, inter alia, novel fluorinated polyurethane elastomers (e.g., fluorinated thermoset polyurethane elastomers and fluorinated thermoplastic elastomers) prepared from polyether prepolymers formed from mono-substituted fluorinated oxetane monomers (FOX monomers) and tetrahydrofuran (THF). In addition, the present invention provides methods of making such fluorinated polyurethane elastomers.Type: GrantFiled: March 8, 2000Date of Patent: May 10, 2005Assignee: Aerojet-General CorporationInventors: Aslam A. Malik, Thomas G. Archibald
-
Patent number: 6858757Abstract: A process for preparing perfluoropolyoxyalkylenes having —OCF2H, —OCF2CF2H and —OCF(CF3)H end groups and a number average molecular weight from 120 to 3,000, by decarboxylation of the corresponding perfluoropolyoxyalkylenes having —OCF2COOH, —OCF2CF2COOH, —OCF(CF3)COOH end groups, in the presence of catalytic amounts of salts formed by perfluoropolyoxyalkylenes having end groups selected from —OCF2COOZ, —OCF2CF2COOZ and —OCF(CF3)COOZ, wherein Z is a monovalent cation of the group Ia or Ib or Z is —NR4+ wherein R is hydrogen or a C1-C4 alkyl, using ratios between Z and the —COOH equivalents of the perfluoropolyoxyalkylenes to be decarboxylated from 0.01 to 0.08, at a temperature between 120° C. and 180° C., in the presence of water, at pH <5 and at a pressure comprised between 2 and 80 atmospheres.Type: GrantFiled: May 21, 2003Date of Patent: February 22, 2005Assignee: Solvay Solexsis S.p.A.Inventors: Giuseppe Marchionni, Gianfranco Spataro
-
Patent number: 6835856Abstract: A process for preparing (per)fluorohalogenethers having general formula (I): (R)nC(F)mOCAF—CA′F2 (I) wherein: A and A′, equal to or different the one from the other, are Cl or Br or one is selected from A and A′ and hydrogen and the other is halogen selected from Cl, Br; R═F, or a fluorinated, preferably perfluorinated, substituent, selected from the following groups: linear or branched C1-C20 alkyl more preferably C1-C10; C3-C7 cycloalkyl; aromatic, C6-C10 arylalkyl, alkylaryl; C5-C10 heterocyclic or alkylheterocyclic; when R is fluorinated or perfluorinated alkyl, cycloalkyl, arylalkyl, alkylaryl, it can optionally contain in the chain one or more oxygen atoms; when R is fluorinated it can optionally contain one or more H atoms and/or one or more halogen atoms different from F: n is an integer and is 1 or 2; m=3-n; by reaction of carbonyl compounds having formula (II): (R)pC(F)q(O) (II) wherein: p is an integer and is 1 or 2; q is an integer aType: GrantFiled: August 5, 2003Date of Patent: December 28, 2004Assignee: Solvay Solexis S.p.A.Inventors: Vito Tortelli, Pierangelo Calini
-
Patent number: 6753301Abstract: A perfluoropolyether, a composition comprising the perfluoropolyether, a process for producing the perfluoropolyether, and a process for improving the thermostability of grease or lubricant are provided. The perfluoropolyether comprises perfluoroalkyl radical end groups in which the radical has at least 3 carbon atoms per radical and is substantially free of perfluoromethyl and perfluoroethyl end groups.Type: GrantFiled: July 10, 2001Date of Patent: June 22, 2004Assignee: E. I. du Pont de Nemours and CompanyInventors: Jon L. Howell, Erik William Perez, Alfred Waterfeld, Chadron Mark Friesen, Joseph Stuart Thrasher
-
Patent number: 6715874Abstract: The invention relates to novel crosslinkable copolymers of formula wherein the variables are as defined in the claims. The copolymers of the invention are especially useful for the manufacture of biomedical moldings, for example ophthalmic moldings such as in particular contact lenses.Type: GrantFiled: July 28, 2000Date of Patent: April 6, 2004Assignee: Novartis AGInventors: Jens Höpken, Dieter Lohmann
-
Patent number: 6653511Abstract: A perfluoropolyether and a composition comprising the perfluoropolyether are provided in which the perfluoropolyether comprises at least one bromine or iodine atom at the primary position of the perfluoropolyether. Also provided is a process for producing the composition in which the process comprises contacting a perfluoropolyether acid fluoride moiety with a metal bromide or metal iodide or a suitable polyether secondary iodide under a condition sufficient to effect the production of a perfluoropolyether comprising at least one bromine or iodine at the primary position.Type: GrantFiled: September 9, 2002Date of Patent: November 25, 2003Assignee: E. I. du Pont de Nemours and CompanyInventors: Jon L. Howell, Erik W. Perez, Alfred Waterfeld, Chadron Mark Friesen, Joseph Stuart Thrasher, Ireneusz Nowak
-
Patent number: 6608230Abstract: A single-stage method for producing &agr;-hydroxy ethers by oxidizing olefinic substrates with organic hydroperoxides and opening the resultant oxirane ring by means of monovalent or polyvalent alcohols wherein a molybdenum compound in combination with a compound selected from the group consisting of boron trifluoride, aluminum oxides, 1,8-diazabicyclo-[5.4.0]-undec-7-ene or 1,4-diazabicyclo-[2.2.2]-octane, and mixtures thereof is used as a catalyst system.Type: GrantFiled: November 8, 2001Date of Patent: August 19, 2003Assignee: WE-DEA Aktiengesellschaft für Mineraloel und ChemieInventors: Mark Rüsch gen. Klaas, Siegfried Warwel, Hans-Martin Zillmann, Klaus Kwetkat
-
Publication number: 20030109653Abstract: The present invention provides new fluoromonomers having the generic structure: CF2═CF(OCH2CH2)nOR where n is an integer and R is a functional group and methods for producing same. A new method of synthesizing the fluoromonomers is provided. The present invention also relates to new fluoropolymers prepared from any one or combination of the new fluoromonomers and having the generic structure: —[—CF2CF{(OCH2CH2)nOR}—]m— where n is an integer, m is an integer and R represents an unsubstituted or inertly substituted hydrocarbyl group. The method also relates to new copolymers or terpolymers prepared from the new fluoromonomers alone, the new fluoromonomers and existing fluoromonomers or the new fluoromonomers and existing hydrocarbon or functionalized hydrocarbon monomers.Type: ApplicationFiled: January 2, 2003Publication date: June 12, 2003Inventors: Molly S. Shoichet, Robert D. Lousenberg
-
Patent number: 6573411Abstract: A process to obtain fluoropolyoxyalkylenes having the structure: T—O—(CF2CF(CF3)O)n−1—(CF(CF3)O)m—CF2—CH2OH (I) wherein: T=C1-C3 perfluoroalkyl containing one Cl atom; n=an integer from 1 to 15; m/n=0-0.5, m+n such to have a number molecular weight in the range 280-4,000; said process comprising: a) the gradual addition of a metal hydride in admixture with a solvent to an ester precursor having the structure T—O—(CF2CF(CF3)O)n−1—(CF(CF3)O)m—CF2—COOR (II) wherein R=C1-C20 alkyl, or aromatic, cycloalkyl or heterocyclic residue, b) the hydrolysis of the reaction mixture obtained in step a) with an aqueous acid solution, the subsequent separation from the obtained organic phase of the compounds of structure (I).Type: GrantFiled: May 16, 2002Date of Patent: June 3, 2003Assignee: Ausimont S.p.A.Inventors: Antonio Russo, Claudio Tonelli
-
Patent number: 6573410Abstract: 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: XCO—CF2O[(CF2O)n(CF2CF2O)m]pCF2—Q (II) wherein: m/n=0.5-10; p=0-20; X=Cl, F; Q=H, CF3, X as above defined or COX′, wherein X′ is Cl, F with the proviso that X′=X; said process being characterized in that the iodination reaction is carried out operating at a temperature from 180° C. to 260° C.Type: GrantFiled: May 9, 2002Date of Patent: June 3, 2003Assignee: Ausimont S.p.A.Inventors: Ivan Wlassics, Vito Tortelli
-
Patent number: 6509509Abstract: 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 fType: GrantFiled: December 29, 2000Date of Patent: January 21, 2003Assignee: Ausimont S.p.A.Inventors: Claudio Tonelli, Antonio Russo, Ezio Strepparola
-
Publication number: 20020173679Abstract: A process to obtain fluoropolyoxyalkylenes having the structure:Type: ApplicationFiled: May 16, 2002Publication date: November 21, 2002Applicant: AUSIMONT S.P.A.Inventors: Antonio Russo, Claudio Tonelli
-
Patent number: 6469217Abstract: The polymerization initiator-containing solution obtained by mixing a specific perfluorodicarboxylic acid fluoride (A) with CsF in an aprotic polar solvent with stirring to conduct reaction and thereby form a polymerization initiator (B) and then allowing the reaction solution to stand for not less than 72 hours at a temperature of 0 to 30° C. A polymerization initiator-containing solution comprises a specific polymerization initiator (B′) and an aprotic polar solvent. The process for preparing a perfluoropolyether comprises polymerizing hexafluoropropylene oxide in the presence of the polymerization initiator-containing solution.Type: GrantFiled: April 30, 2001Date of Patent: October 22, 2002Assignee: Nippon Mektron, Ltd.Inventors: Satoru Saito, Haruyoshi Tatsu, Vera Grinevskaya
-
Patent number: 6448368Abstract: The present invention provides, inter alia, novel fluorinated polymers and prepolymers derived from mono-substituted oxetane monomers having fluorinated alkoxymethylene side chains and methods of making such polymers and prepolymers.Type: GrantFiled: March 8, 2000Date of Patent: September 10, 2002Assignee: Aerojet-General CorporationInventors: Aslam A. Malik, Thomas G. Archibald
-
Publication number: 20020111518Abstract: Fluorinated multifunctional alcohols containing at least 3 primary hydroxyl groups are disclosed. Such alcohols allow for easy synthesis of multifunctional crosslinkers such as acrylates, epoxies and vinyl ethers. The multifunctional crosslinkers are used in fluorinated optical coating and waveguide compositions to increase curing speed and crosslinking density.Type: ApplicationFiled: January 31, 2002Publication date: August 15, 2002Inventors: Fang Wang, Baopei Xu, Indira S. Pottebaum, Chuck C. Xu
-
Publication number: 20020066205Abstract: 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 of the following components is used:Type: ApplicationFiled: November 29, 2001Publication date: June 6, 2002Applicant: Ausimont S.p.A.Inventors: Mario Visca, Simonetta Fontana
-
Patent number: 6395083Abstract: The present invention is the following invention which provides a cement admixture which satisfies fluidity of fresh concrete and high strength of the hardened product of concrete simultaneously.Type: GrantFiled: February 27, 2001Date of Patent: May 28, 2002Assignee: Asahi Glass Company Ltd.Inventors: Genichirou Enna, Hiroki Fukuda, Yoshihiro Ohtsuka
-
Patent number: 6380439Abstract: A single-stage method for producing &agr;-hydroxy ethers by oxidizing olefinic substrates with organic hydroperoxides and opening the resultant oxirane ring by means of monovalent or polyvalent alcohols wherein a molybdenum compound in combination with a compound selected from the group consisting of boron trifluoride, aluminum oxides, 1,8-diazabicyclo-[5.4.0]-undec-7-ene or 1,4-diazabicyclo-[2.2.2]-octane, and mixtures thereof is used as a catalyst system.Type: GrantFiled: January 25, 2000Date of Patent: April 30, 2002Assignee: RWE-DEA Aktiengesellschaft fur Mineraloel und ChemieInventors: Mark Rüsch gen. Klaas, Siegfried Warwel, Hans-Martin Zillmann, Klaus Kwetkat
-
Patent number: 6380351Abstract: The present invention provides, inter alia, novel fluorinated copolymers and coprepolymers derived from mono-substituted oxetane monomers having fluorinated alkoxymethylene side-chains (FOX monomers) and tetrahydrofuran (THF). In addition, the present invention provides methods of making such copolymers and coprepolymers.Type: GrantFiled: March 8, 2000Date of Patent: April 30, 2002Assignee: Aerojet-General CorporationInventors: Aslam A. Malik, Thomas G. Archibald
-
Patent number: 6361713Abstract: Normally liquid, omega-hydrofluoroalkyl ether compounds (and selected mixtures thereof) have a saturated perfluoroaliphatic chain of carbon atoms interrupted by one or more ether oxygen atoms. The compounds can be prepared, e.g., by decarboxylation of the corresponding fluoroalkyl ether carboxylic acids and are useful, e.g., in cleaning and drying applications.Type: GrantFiled: August 17, 2000Date of Patent: March 26, 2002Assignee: 3M Innovative Properties CompanyInventors: George G. I. Moore, Richard M. Flynn, Miguel A. Guerra, John G. Owens
-
Patent number: 6359089Abstract: Disclosed herein is a novel class of fluorovinyl ether monomers which are useful as cure site monomers in fluoroelastomers, a process for the preparation of these fluorovinyl ether monomers, and fluoroelastomer copolymer compositions that contain copolymerized units of these fluorovinyl ether monomers.Type: GrantFiled: March 22, 2001Date of Patent: March 19, 2002Assignee: DuPont Dow Elastomers, L.L.C.Inventors: Ming-Hong Hung, Walter Werner Schmiegel
-
Patent number: 6350306Abstract: 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: GrantFiled: December 12, 1996Date of Patent: February 26, 2002Assignee: Ausimont S.p.A.Inventors: Claudio Tonelli, Stefano Turri, Massimo Scicchitano
-
Patent number: 6340779Abstract: The present invention is directed to a method for producing fluorine-containing oxyalkylene compounds used in a cement admixture represented by the formula (4), which comprises ring opening polymerization of at least one cyclic ether represented by the formula (3) in the presence of an acid catalyst and a fluorine-containing hydroxyl compound represented by the formula (2): Rf—Q2—OH (2) Rf—Q2—O—(A2—O)k—H (4) wherein Rf is a C1-22 polyfluoroaliphatic hydrocarbon group which may contain ethereal oxygen atoms or thioethereal sulfur atoms, Q2 is a C3-5 linear or branched alkylene group, k is an integer of from 1 to 100, and A2 is a C2-4 linear alkylene group or a group having at least one hydrogen atom of said alkylene group substituted by a hydrocarbon group which may contain ethereal oxygen atoms.Type: GrantFiled: May 28, 1999Date of Patent: January 22, 2002Assignee: Asahi Glass Company Ltd.Inventors: Genichirou Enna, Hiroki Fukuda, Yoshihiro Ohtsuka
-
Publication number: 20020002258Abstract: Disclosed herein is a novel class of fluorovinyl ether monomers which are useful as cure site monomers in fluoroelastomers, a process for the preparation of these fluorovinyl ether monomers, and fluoroelastomer copolymer compositions that contain copolymerized units of these fluorovinyl ether monomers.Type: ApplicationFiled: March 22, 2001Publication date: January 3, 2002Inventors: Ming-Hong Hung, Walter W. Schmiegel
-
Publication number: 20010051753Abstract: 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: ApplicationFiled: April 23, 2001Publication date: December 13, 2001Applicant: Ausimont S.p.A.Inventor: Walter Navarrini
-
Publication number: 20010047115Abstract: A fluorine-containing diene represented by the formula 1:Type: ApplicationFiled: April 25, 2001Publication date: November 29, 2001Applicant: Asahi Glass Company, LimitedInventors: Kimiaki Kashiwagi, Hidenobu Murofushi, Norihide Sugiyama, Masakuni Sato, Atsushi Watakabe
-
Patent number: 6316505Abstract: Block copolymers containing a fluorinated hydrocarbon unit, a hydrocarbon unit, and a poly(oxyethylene) unit are useful in fluid formulations of pharmaceutical agents. A typical embodiment is: C11H23—CONHC2H4NHCO—C8F16—CONHC2H4NHCOO—(C2H4O)34—H.Type: GrantFiled: August 5, 1999Date of Patent: November 13, 2001Assignee: Supratek Pharma, Inc.Inventors: Alexander V. Kabanov, Serguei V. Vinogradov
-
Patent number: 6315869Abstract: A perfluorovinyl ether of the formula: RfO(CF2CFXO)nCF═CF2 (1) in which Rf is a perfluoralkyl group, X is a fluorine atom or a trifluoromethyl group, and n is a number of 0 to 20 containing impurities is purified by removing a hydrogen fluoride adduct of the perfluorovinyl ether (1) through distillation, the perfluorovinyl ether (1) is distilled in the presence of a ketone or an ether having a lower boiling point than that of the perfluorovinyl ether (1) while refluxing such a solvent. This method can remove the hydrogen fluoride adduct of a perfluorovinyl ether as an impurity and provide a high purity perfluorovinyl ether.Type: GrantFiled: May 21, 1999Date of Patent: November 13, 2001Assignee: Daikin Industries, Ltd.Inventors: Shigeru Morita, Toshihiko Amano
-
Publication number: 20010034458Abstract: Vinyl ether compounds having the formula:Type: ApplicationFiled: May 11, 2001Publication date: October 25, 2001Applicant: AlliedSignal Inc.Inventors: Russell F. Anderson, David E. Bradley, David Nalewajek, Haridasan K. Nair, Mariola J. Proszowski, Eugene V. Sitzmann, Ellen L. Swan
-
Patent number: 6300526Abstract: Hydro-2,2-difluoroalkylvinylethers having the formula CF2═CH—O—RA (I) wherein RA is a radical containing fluorine, optionally containing halogens such as Cl, Br, I, hydrogen, functional groups CM, COOR′, CON(R′)2, SO2OR′, m wherein R′ is a C1-C5 alkyl, RA being selected from the following: a linear or branched, saturated or unsaturated C2-C20 fluoroalkyl, or a saturated or unsaturated C4-C6 fluorinated cyclic group wherein optionally from 1 to 2 carbon atoms are substituted with oxygen atoms, or a linear, branched saturated or unsaturated, C3-C15 fluorooxyalkyl group, containing one or Core oxygen atoms.Type: GrantFiled: July 29, 1999Date of Patent: October 9, 2001Assignee: Austmont S.p.A.Inventors: Walter Navarrini, Antonio Russo
-
Patent number: 6291704Abstract: Vinyl ether compounds having the formula: R—O—X—O—CH═CH2 wherein R is a radical selected from R1—CnHm—, R1—CnHm—C(═O)—, R1—CnHm—CH[—O—X—O—CH═CH2—], R1—CnHm—CH[—O—X—O—CH═CH2—]C(═O)—, R1—CnHm—CH[—C(═O)—O—X—O—CH═CH2—], R1—CnHm—CH[—C(═O)—O—X—0—CH═CH2—]C(═O)—, R1—[CFCl—CF2—]pCH2— and HCFCl—CF2—, wherein R1 is hydrogen, an unsubstituted or substituted fluorinated aliphatic radical, an unsubstituted or substituted fluorinated cyclic aliphatic radical, an unsubstituted or substituted fluorinated aromatic radical, an unsubstituted or substituted fluorinated araliphatic radical, or an unsubstituted or substituted fluorinated heterocyclic radiType: GrantFiled: March 18, 1999Date of Patent: September 18, 2001Assignee: AlliedSignal Inc.Inventors: Russell F. Anderson, David E. Bradley, David Nalewajek, Haridasan K. Nair, Mariola J. Proszowski, Eugene V. Sitzman, Ellen L. Swan
-
Patent number: 6265494Abstract: Curable fluoroelastomeric compositions comprising: A) 100 phr (parts) of fluoroelastomeric copolymers based on vinylidenefluoride (VDF) copolymers and at least a partially or completely fluorinated comonomer having an ethylene unsaturation; B) 0.Type: GrantFiled: May 19, 1998Date of Patent: July 24, 2001Assignee: Ausimonto S.p.A.Inventors: Ivan Wlassics, Alberto Zompatori, Anna Staccione
-
Publication number: 20010007046Abstract: A process for preparing perfluoropolyoxyalkylenes with hydroxyl end groups having structure:Type: ApplicationFiled: December 29, 2000Publication date: July 5, 2001Applicant: Ausimont S.p.A.Inventors: Claudio Tonelli, Antonio Russo, Ezio Strepparola