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| Number | Title | Issue Date |
| 7923584 | Synthesis of difunctional oxyethylene-based compounds A method of reacting a toluenesulfonyl-terminated polyoxyethylene compound having the formula CH3—C6H4—SO2—(O—CH2—CH2)n—O—R1 with an ammonium salt having the formul... | 04/12/2011 |
| 7393961 | Polyhalogenated ethers (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)hal... | 07/01/2008 |
| 7148385 | Perfluoropolyether primary bromides and lodides 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 compos... | 12/12/2006 |
| 6989432 | Copolymers of tetrahydrofuran, ethylene oxide and an additional cyclic ether 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. | 01/24/2006 |
| 6936668 | Amorphous perfluorinated copolymers Amorphous perfluorinated copolymers, comprising cyclic perfluorinated units deriving from at least two different perfluorinated comonomers, optionally with units deriving from a perfluorinated monomer containing at least one olefinic unsaturation (perfluoroolefin), ... | 08/30/2005 |
| 6911558 | Method for purifying chloromethyl chloroformate Describes a method for obtaining substantially pure chloromethyl chloroformate from a chloroformate mixture comprising chloromethyl chloroformate and methyl chloroformate by heating the chloroformate mixture in a reaction zone at temperatures ranging from at least 5... | 06/28/2005 |
| 6790890 | Aqueous compositions of perfluoropolyether phosphates and use thereof to confer oleo-repellence to paper Aqueous compositions of (per)fluoropolyether phosphates of formula: T—O—[Rf—CFY—L—O]P(O)(O−Z+)(OH); and/or (A) (OH)m(O−Z+)2-mP(O)... | 09/14/2004 |
| 6653511 | Perfluoropolyether primary bromides and iodides 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... | 11/25/2003 |
| 6509509 | Process for the preparation of perfluoropolyoxyalkylenes with hydroxyl end groups A process for preparing perfluoropolyoxyalkylenes with hydroxyl end groups having structure: T1 --CFW1 --O--Rf --CFW2 --T2 (I) wherein: T1, T2, are selected from --CH2 OH, --F,... | 01/21/2003 |
| 6372923 | Process for preparing alcohol derivatives The present invention provides a process for preparing an alcohol derivative, where the alcohol derivative is an ester, acetal, ketal, ether glycoside, or alkyl glycoside, by reacting an alcohol with a carbonyl compound, alcohol, olefin, epoxy compound or... | 04/16/2002 |
| 6303834 | High internal phase emulsions (HIPEs) and foams made therefrom High internal phase emulsions (HIPEs), porous polymeric materials made therefrom, and methods for making and using the same. Specific embodiments of the invention include water-in-oil high internal phase emulsions having at least 70 volume percent of an i... | 10/16/2001 |
| 6300526 | Hydro-fluoroalkylvinylethers and process for obtaining them Hydro-2,2-difluoroalkylvinylethers having the formula CF2.dbd.CH--O--R.sub.A (I) wherein RA is a radical containing fluorine, optionally containing halogens such as Cl, Br, I, hydrogen, functional groups CM, COOR', CON(R')2, S... | 10/09/2001 |
| 6191314 | Process for obtaining (per)fluoropolyethers substituted at one or at both end groups with a halogen atom A process for obtaining (per) fluoropolyethers substituted at one or at both end groups with a halogen atom selected from bromine or iodine, having the formula: A--CF2 --O--(CF2 CF2 O)p --(CF2 O)q | 02/20/2001 |
| 6127498 | Modified hydrogenated polymers Hydrogenated fluoromodified polymers obtainable by reaction among hydrogenated polymers and the modifier having a polyether structure: RfO(CF2 CF2 O)m (CF2 O)n --CF2 --Aq --Tp | 10/03/2000 |
| 6008400 | Orthoester reagents for use as protecting groups in oligonucleotide synthesis Phosphoramidite oligonucleotide synthesis is facilitated by the use of fluoride-labile 5' silyl protecting groups. RNA synthesis is improved by the use of 2 orthoester protecting groups. Reactions are conducted on a solid phase support and acidic deprotec... | 12/28/1999 |
| 5969192 | Process for preparing hydrogen-terminated polyoxyperfluoroalkanes A process for preparing hydrogen-terminated polyoxyperfluoroalkanes having molecular weight lower than 1800, by decarboxylation of the corresponding polyoxyperfluoroalkanes having one or two end groups selected form --OCF2 COOZ, --OCF2 | 10/19/1999 |
| 5910617 | Process for the preparation of aliphatic or cycloaliphatic chlorides The process according to the invention consists in preparing chlorides of aliphatic or cycloaliphatic hydrocarbons by reacting the corresponding mono- or polyalcohol with phosgene or thionyl chloride in the presence of at least one catalyst chosen from he... | 06/08/1999 |
| 5902908 | Method for preparing fluorinated vinyl ether The present inventions provide methods to produce fluorinated vinyl ether by reacting fluorinated carboxylic acid halogenide with a metal compound below the decomposition temperature for the corresponding metal salt in the absence of solvent and then rais... | 05/11/1999 |
| 5780644 | Branced polyoxaalkyl macromolecules Branched, dendrimeric-type macromolecules composed essentially of a central nucleus and of a series of polyoxaalkyl chains that depart from said nucleus and spread into the surrounding space branching in a cascade fashion useful as carriers of drugs, cont... | 07/14/1998 |
| 5777174 | Process for preparing perfluoropolyethers with bromo- or iodo-containing end groups Process for preparing perfluoropolyethers with bromo- or iodo- containing end groups, respectively, by subjecting a peroxidic perfluoropolyether to thermal treatment, in the absence of UV radiation, at temperatures from 120° C. to 280° C. in the presenc... | 07/07/1998 |
| 5705709 | Preparation of bromine-containing polyols The invention relates to a process for the preparation of bromine-containing polyols in which a bromine-containing alcohol is caused to react with an alkylene oxide in admixture with other H-functional compounds and the catalyst used is a system comprisin... | 01/06/1998 |
| 5608116 | Process for the alkoxylation of fluorinated alcohols The present invention relates to the preparation of fluoroalkylalkoxylates in which one reacts at least one fluorinated alcohol with at least one alkylene epoxide in the presence of a novel catalyst system comprising an iodine source and an alkali metal b... | 03/04/1997 |
| 5488181 | Process for preparing perfluoropolyethers Process for preparing peroxidic perfluoropolyethers by oxidation of tetrafluoroethylene with oxygen, in liquid phase comprising a solvent and in the presence of a chemical initiator, at a pressure between 2 and 15 absolute atm and operating with a molar r... | 01/30/1996 |
| 5313000 | Polymerization of cyclic ethers This invention relates to the production of hydroxy-terminated polymers in the 2,000-20,000 MW range suitable for use as prepolymers in curing reactions with isocyanates to produce elastomers. The process involves the continuous addition over periods of 2... | 05/17/1994 |
| 5296627 | Ethylenically unsaturated poly(alkyleneoxy) surfactants Describes terminally ethylenically unsaturated poly(alkyleneoxy) surfactant compounds of the general formula, R--O--(R'O)m --(EO)n-1 --CH2 CH2 --X, wherein R is the ethylenically unsaturated hydrocarbon group, e... | 03/22/1994 |
| 5237108 | Perfluoropolyethers and processes for their preparation The invention relates to new peroxide perfluoropolyethers having formula: ##STR1## wherein: A and B are end groups, X represents a (R'O)m R" group where R' is selected from the class consisting of ##STR2## and R" is a perfluoroalkyl ... | 08/17/1993 |
| 5220076 | Perfluoropolyethers and processes for their preparation The invention relates to new peroxide perfluoropolyethers having formula: ##STR1## wherein: A and B are end groups, X represents a (R'O)m R" group where R' is selected from the class consisting of --CF2 --, --CF2 --CF... | 06/15/1993 |
| 5210322 | Processes for the preparation of ethers A process for preparing ethers which comprises contacting a carboxylated ether with a metal oxide catalyst under conditions effective to produce the ether.... | 05/11/1993 |
| 5210332 | Iridium-optically active phosphine complex and process for producing optically active alcohols using the same An iridium-optically active phosphine complex represented by formula (I): [H2 Ir(L1)(L2)]Y (I) wherein L1 represents an optically active phosphine compound represented by formula (II): ##ST... | 05/11/1993 |
| 5185473 | Process for the preparation of perfluorinated ethers The invention relates to a process for the preparation of perfluorinated ethers of the formula R--CF2 --CF3, in which R is the radical CF3 (CF2)2 --O--[--CF(CF3)CF2 --O]n -... | 02/09/1993 |
| 5144092 | Perfluoropolyethers and processes for their preparation The invention relates to new peroxide perfluoropolyethers having formula: ##STR1## wherein: A and B are end groups, X represents a (R'O)m R" group where R' is selected from the class consisting of ##STR2## and R" is a perfluoroalkyl ... | 09/01/1992 |
| 5109075 | Comb-shaped graft copolymers of allyl terminated macromolecular monomers of polyethers A copolymer of an olefinically unsaturated monomer and an allylically headed macromolecular monomer ("macromer") of a ring-openable cyclic ether ("CE") is prepared as a comb-shaped graft copolymer of macromer. A wide variety of olefinically unsaturated mo... | 04/28/1992 |
| 5104987 | Alkoxylation of active hydrogen-containing compounds This invention relates to a process for the alkoxylation of an active hydrogen-containing compound comprising contacting the active hydrogen-containing compound with an alkylene carbonate in the presence of a mixed metal oxide catalyst under conditions ef... | 04/14/1992 |
| 5099042 | Synthesis of tetrafunctional polyethers and compositions formed therefrom Polymers are produced from 4 and 5 member cyclic ethers, which polymers have hydroxyl functionalities of 4. The cyclic ethers are polymerized with an acid catalyst and a tetraol initiator having the general formula: ##STR1##... | 03/24/1992 |
| 5099075 | Process for removing double metal cyanide catalyst residues from a polyol The present invention relates to a process for removing double metal cyanide complex catalyst residue(s) from polyol(s) which comprises after polyol formation the steps of: (a) contacting the catalyst residue-containing polyol with an effective amount of ... | 03/24/1992 |
| 5087687 | Polyethers containing perfluoroalkyl groups, methods for their synthesis and their use as surfactants and as polyol components in the preparation of polyurethanes Polyethers are disclosed which contain perfluoroalkyl groups and have the average formula ##STR1## wherein R1 is the same or different in the polymer mixture and represents hydrogen or a fluoro group, n has an average value of 4 to 12, a h... | 02/11/1992 |
| 5013472 | Chlorotrifluoroethylene telomers New chlorotrifluoroethylene telomers and process for preparing them. Chlorotrifluoroethylene is reacted, at a temperature ranging from -100° to +40° C., with a fluoroxy compound of formula Rx --CF2 OF, wherein Rx represe... | 05/07/1991 |
| 5002678 | Lubricants for heat transfer fluids A heat transfer composition comprising a heat transfer medium and a lubricant, wherein said heat transfer medium is a low boiling organic compound and wherein said lubricant is a halogenated polyoxyalkylene monoalcohol having the empirical structural form... | 03/26/1991 |
| 5000864 | Perfluoropolyethers having antirust properties, useful as components or additives for lubricating oils and greases Perfluoropolyethers having antirust properties, suitable for being used as lubricating oils or as components of lubricating greases or as antirust additives for lubricating oils and greases based on perfluoropolyethers.... | 03/19/1991 |
| 5001278 | Novel fluorovinyl ether and copolymer comprising the same A fluorovinyl ether of the formula: XCH2 CF2 CF2 --(OCH2 CF2 CF2)m --(OCFYCF2)n --OCF.dbd.CF2 (I) wherein X is a hydrogen atom or a halogen... | 03/19/1991 |
