Matches 1 - 50 out of 189 1 2 3 4 >
Match Document Document Title
7390427 Hydrofluoroether as a heat-transfer fluid  
The present invention provides an apparatus comprising a device and a mechanism for heat transfer comprising a hydrofluoroether heat-transfer fluid wherein the heat transfer fluid is represented by...
7375254 Process for recovery of 1,1,1,3,3,3-hexafluoroisopropanol from the waste stream of sevoflurane synthesis  
Provided is a process of obtaining 1,1,1,3,3,3-hexafluoro-2-propanol (“HFIP”) from a composition comprising an HFIP hydrolyzable precursor. The HFIP hydrolyzable precursor is a compound, other...
7288682 Separation of bifunctional perfluoropolyethers (PFPEs) having -CH2OH termination from their mixtures with -CH2OH monofunctional PFPEs  
A process for separating bifunctional perfluoropolyethers (PFPEs) having two terminations —CH 2 OH from their mixtures with monofunctional PFPEs with one termination —CH 2 OH, of general...
7247757 Method of producing a fluorine-containing vinyl ether compound  
A method of producing a fluorine-containing vinyl ether compound, which contains the step of: fluorinating a compound of formula (I-1) or (I-2): wherein R is a straight-chain, branched-chain or...
7230147 Process for functionalizing a double bond  
The invention concerns a method for functionalizing a double bond and, more particularly, a double bond bearing a metalloid atom. Said functionalization is produced by the action of perhalogenated...
7230143 Chromatographic method for the analysis of both in process and finished sevoflurane  
A method in which organic matter found in a crude sevoflurane may be separated, identified, and quantified using a CARBOWAX™ (polyethylene glycol) capillary gas chromatographic column or an alkyl...
7230142 Process for purifying fluoromethyl 1,1,1,3,3,3-hexafluoroisopropyl ether  
A process for purifying fluoromethyl 1,1,1,3,3,3-hexafluoroisopropyl ether containing at least 1,1,1,3,3,3-hexafluoroisopropyl alcohol. The purifying process comprises the treatment of causing...
7202386 Method for the preparation of sevoflurane  
A method for the preparation of sevoflurane which comprises (a) providing a liquid mixture of (CF 3 ) 2 CHOCH 2 Cl, hydrogen fluoride, and an amine and (b) reacting the mixture, to form (CF 3 ) 2...
7193119 Process for producing fluorinated alkyl ether  
To provide a process for producing a fluorinated alkyl ether, whereby a sufficient reaction rate can be attained even under mild reaction conditions, and a post-process such as distillation after...
7193118 Method for producing fluoroalkyl ether  
A method for producing a fluoroalkyl ether, which comprises reacting a fluoroalkyl alcohol with a fluorinated olefin in the presence of a solvent and a catalyst, wherein the fluoroalkyl alcohol and...
7153397 Process for the purification of fluoromethyl hexafluoroisopropyl ether  
A process for the purification of fluoromethyl hexafluoroisopropyl ether which comprises contacting a crude composition comprising fluoromethyl hexafluoroisopropyl ether and hexafluoroisopropyl...
7141704 Process for preparing hydrofluoroethers  
Process for obtaining hydrofluoroethers of formula (I): A-(R f ) n0 —CF(R f1 )—O—R h (I)
7128133 Hydrofluoroether as a heat-transfer fluid  
The present invention provides an apparatus comprising a device and a mechanism for heat transfer comprising a hydrofluoroether heat-transfer fluid wherein the heat transfer fluid is represented by...
7125834 Functional substances derived from oligoolefins having functional groups at the ends  
This invention provides the following: an amphiphilic functional substance with lipophilicity, affinity for supercritical CO 2 , and if necessary hydrophilicity comprising an oligoolefin chain and...
7102031 Method for producing diene compound  
It is an object to obtain from a mixture of a specific diene compound (1) and a compound (2) with the same molecular weight and molecular formula hard to separate by distillation, the diene...
7091374 Fluorinated compounds  
Fluorinated compounds and emulsions including the compounds. The compositions are useful as oxygen carriers and surfactants. In one embodiment, the fluorinated compound is pH sensitive. In one...
7060850 Fluorous tagging and scavenging reactants and methods of synthesis and use thereof  
The present invention includes methods and compositions for increasing the fluorous nature of an organic compound by reacting it with at least one fluorous compound to produce a fluorous tagged...
7034190 Process for the production of fluoromethyl hexafluoroisopropyl ether  
A process for the production of fluoromethylhexafluoroisopropylether which comprises contacting bis(fluoromethyl)ether with hexafluoroisopropyl alcohol in which the molar ratio of the ether to...
7019178 Process for the purification of fluoromethyl hexafluoroisopropyl ether  
A process for the purification of fluoromethyl hexafluoroisopropyl ether involving contacting a crude composition containing impure fluoromethyl hexafluoroisopropyl ether with an adsorbent having...
6911513 Fluorinated diene compound and fluoropolymer, and methods for their production  
A novel fluoropolymer which can be an optical resin material having a low refractive index and excellent heat resistance, and a novel fluorinated diene compound having two unsaturated bonds,...
6849194 Methods for preparing ethers, ether compositions, fluoroether fire extinguishing systems, mixtures and methods  
Highly fluorinated, saturated, and unsaturated fluoroethers are efficient, economical, non-ozone-depleting fire extinguishing agents used alone or in blends with other fire extinguishing agents in...
6800786 Preparation of desflurane  
Provided is a method for the preparation of desflurane wherein isoflurane is reacted with 0.7-1.2 mol. % of antimony pentachloride and 1.3-2.2 molar equivalents of hydrogen fluoride. Typically, the...
6770776 Synthesis of fluorocarbon compounds  
Fluorocarbon compounds are synthesized by reacting a substrate hydrocarbyl compound containing at least one sp 3 -hybridized halophoric carbon atom bearing at least two halogen atom substituents,...
6756458 Fluorinated compound, method for its production and polymer thereof  
A novel polymer useful as an optical resin material excellent in heat resistance, a novel monomer for obtaining the polymer, etc., are provided. A fluorinated diene represented by CF 2 ═CF(CF 2 )...
6677492 Fluoroether compositions and methods for inhibiting their degradation in the presence of a Lewis acid  
The present invention relates to an anesthetic composition containing a fluoroether compound and a physiologically acceptable Lewis acid inhibitor. This composition exhibits improved stability and...
6670511 Fluorine-containing diene, its production method and its polymer  
A fluorine-containing diene represented by the formula 1: CF 2 ═CF(CF 2 ) n CXYOCF═CF 2 Formula 1 wherein each of X and Y which are independent of each other, is an atom selected from a...
6509509 Process for the preparation of perfluoropolyoxyalkylenes with hydroxyl end groups  
A process for preparing perfluoropolyoxyalkylenes with hydroxyl end groups having structure: T 1 —CFW 1 —O—R f —CFW 2 —T 2 (I) wherein: T 1 , T 2 , are selected from —CH 2 OH, —F,...
6469219 Production of fluoromethyl 2,2,2-trifluoro-1-(trifluoromethyl)ethyl ether  
An improved process for preparing fluoromethyl 2,2,2-trifluoro-1-(trifluoromethyl)ethyl ether(sevoflurane) by reacting 1,1,1,3,3,3-hexafluoro-2-propanol with formaldahyde and hydrogen fluoride...
6448451 Process for removal of dimethyl ether in the synthesis of sevoflurane  
The invention provides a process for purifying methyl 2,2,2-trifluoro-1-(trifluoromethyl)ethyl ether, comprising: passing a composition comprising methyl 2,2,2-trifluoro-1-(trifluoromethyl)ethyl...
6365769 Perfluoroalkyl halides and derivatives  
Novel mixtures of perfluoroalkyl halides and derivatives thereof are described. These mixtures contain some compounds with a straight perfluoroalkyl group and some with a branched perfluoroalkyl...
6315869 Process for purification of perfluorovinyl ethers  
A perfluorovinyl ether of the formula: RfO(CF 2 CFXO) n CFCF 2 (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...
6303831 Synthetic method for fluoromethylation of halogenated alcohols  
A method for fluoromethylation of a halogenated alcohol. The method includes refluxing a halogenated alcohol with a dihalomethane under basic conditions in a first solvent to form a halomethyl...
6300526 Hydro-fluoroalkylvinylethers and process for obtaining them  
Hydro-2,2-difluoroalkylvinylethers having the formula CF 2 CH--O--R A (I) wherein R A is a radical containing fluorine, optionally containing halogens such as Cl, Br, I, hydrogen,...
6271422 Method for fluoromethylation of alcohols via halogenative decarboxylation  
A method for fluoromethylation of an alcohol via halogenative decarboxylation. The method includes the step of reacting an alcohol of the formula R 1 C(CX 3 ) 2 OH with an alpha-haloester of the...
6245949 Synthetic method for the fluoromethylation of alcohols  
A method for fluoromethylating halogenated alcohols. The method includes the step of providing an alpha-halogenated alcohol of the formula R 1 C(CX 3 ) 2 OH, wherein R 1 is selected from the...
6225511 Synthesis of fluorinated ethers  
Fluorinated ethers of the formula: ##STR1## wherein R is hydrogen, fluorine, alkyl of 1 to 6 carbon atoms, or fluoroalkyl of 1 to 6 carbon atoms, R' is hydrogen, alkyl of 1 to 6 carbon atoms, or...
6100434 Method for synthesizing sevoflurane and an intermediate thereof  
A method for synthesizing fluoromethyl-1,1,1,3,3,3-hexafluoroisopropyl ether. The method includes the step of combining in the presence of aluminum trichloride a quantity of hexafluoroisopropanol...
6072088 Chemical compounds having two trifluoromethyl groups  
A compound having the formula: CF 3 CH 2 -w (H 1 -x CH 2 -y R m R' n CH 1 -z) p H 2 -q CF 3 wherein w=0, 1 or 2; x=0 or 1; y=0, 1 or 2; m=0, 1 or 2; n=0 or 1; z=0 or 1; p=1 or 2; and q=0, 1...
6046368 Catalytic process for making hydrofluoroethers  
Briefly, in one aspect, this invention provides a catalytic method of preparation of primary and secondary hydrofluoroethers, the process comprising reacting a fluorinated precursor material and an...
6023002 Process for preparing hydrofluoroethers  
Described is a reaction of a fluorinated alkoxide with an alkyl fluorovinylalkyl ether, the alkyl fluorovinylalkyl ether having alpha-beta carbon-carbon unsaturation relative to the ether oxygen,...
6019909 Fluorinated hydrocarbon compound and process for its preparation, and refrigerator oil and magnetic recording medium lubricant  
5990359 Process for the production of fluoromethylhexafluoroisopropylether  
Process for producing Sevoflurane anaesthetic which comprises reacting hexafluoroisopropyl alcohol with essentially pure bis(fluoromethyl)ether. The bis(fluoromethyl)ether is preferably obtained by...
5965779 Fluorooxetane compound and process for its preparation  
The present invention provides processes for preparing 2,2,3,3,4-pentafluorooxetane and/or 2,2,3,3,4,4-hexafluorooxetane which comprises reacting 2,2,3,3-tetrafluorooxetane with fluorine gas, the...
5917008 Polytetrafluoroethylene dispersions in an organic solvent and dispersing agents employed therein  
Polytetrafluoroethylene (PTFE) dispersions in an organic solvent, comprising: (A) from 2 to 40% by weight of PTFE in powder form; (B) from 50 to 95% by weight of an organic solvent; (C) from 0.5 to...
5886239 Method of preparing monofluoromethyl ethers  
A method of preparing fluoromethyl 2,2,2-trifluoro-1-(trifluoromethyl)ethyl ether (sevoflurane) and structurally related monofluoromethyl ethers in which the monochloromethyl ether precursor...
5856587 Flame extinguishing compositions  
Extinguishing compositions comprising a liquid extinguishing agent constituted by hydrofluoropolyethers having general formula HF 2 CO(CF 2 O) n (CF 2 CF 2 O) m CF 2 H wherein n and m are...
5811596 Method of producing fluoromethyl 1,1,1,3,3,3-hexafluoroisopropyl ether  
The present invention provides a novel method of producing fluoromethyl 1,1,1,3,3,3-hexafluoroisopropyl ether. It is a method of producing fluoromethyl 1,1,1,3,3,3-hexafluoroisopropyl ether by...
5763684 Method of purifying fluoromethyl-1,1,1,3,3,3-hexafluoroisopropyl ether  
The present invention relates to a method of removing bisfluoromethyl ether contained in fluoromethyl-1,1,1,3,3,3-hexafluoroisopropyl ether in a simple, effective manner, and is characterized in...
5753776 Liquid-phase fluorination  
This invention pertains to a method for liquid phase fluorination for perfluorination of a wide variety of hydrogen-containing compounds.
5750807 Production of hyrofluorocarbons  
A process for the production of a hydro(halo)fluorocarbon which comprises heating an α-fluoroether in the vapor phase at elevated temperature. α-fluoroethers are obtained by reacting a...
Matches 1 - 50 out of 189 1 2 3 4 >