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| Number | Title | Issue Date |
| 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 sulphonyl chloride on the carbon bearing sulphur in the presence of a... | 06/12/2007 |
| 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 the reaction can be efficiently carried out. A process for prod... | 03/20/2007 |
| 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 embodiment, the fluorinated compound is a vitamin E derivative. In one em... | 08/15/2006 |
| 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 total flooding and portable systems. Methods for producing ethers, ha... | 02/01/2005 |
| 6770776 | Synthesis of fluorocarbon compounds Fluorocarbon compounds are synthesized by reacting a substrate hydrocarbyl compound containing at least one sp3-hybridized halophoric carbon atom bearing at least two halogen atom substituents, at least one of which is a halogen atom having an atomic numb... | 08/03/2004 |
| 6566559 | Process for the production of isopropenyl methyl ether Process for the production of unsaturated ethers, in particular isopropenyl methyl ether (IPM), by pyrolysis of a ketal-containing or acetal-containing mixture, in particular dimethoxypropane (DMP), in the liquid phase in the presence of an organic carbox... | 05/20/2003 |
| 6406680 | X-ray contrast agents This invention describes a new type of X-ray contrast agents. It has been found that iodinated alkenes containing one or several C.dbd.C double bonds substituted with electronic neutral substituents and iodine can be used as X-ray contrast agents. Also ne... | 06/18/2002 |
| 6316636 | Synthesis of fluorocarbon compounds Fluorocarbon compounds are synthesized by reacting a substrate hydrocarbyl compound containing at least one sp3 -hybridized halophoric carbon atom bearing at least two halogen atom substituents, at least one of which is a halogen atom having an... | 11/13/2001 |
| 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 ether and fluorinating the halomethyl ether in the presence of... | 10/16/2001 |
| 6300532 | Process for addition of haloalkanes to alkenes catalyzed by an organophosphite compound A process for catalytic addition of haloalkanes to alkenes involving the step of reacting the haloalkane with the alkene in the presence of a catalyst. The catalyst is an organophosphite compound represented by the following formula: P(ORa)(OR | 10/09/2001 |
| 6277867 | Pesticide compounds, compositions and process for the preparation thereof The invention relates to compounds of general formula (I), their optically active isomers and salts wherein Ar=alycylic, aromatic or one or more heteroatom containing heterocyclic moiety, optionally substituted by one or more alkoxy-, methylenedioxy-, alk... | 08/21/2001 |
| 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 R1 C(CX3)2 OH with an alpha-haloester of the formula X2 CH2 | 08/07/2001 |
| 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 and a quantity of either 1,3,5-trioxane or paraformaldehyde... | 08/08/2000 |
| 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 alkylating agent in the presence of a Lewis acid catalyst... | 04/04/2000 |
| 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 process inhibiting decomposition of the oxetane ring during... | 10/12/1999 |
| 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 |
| 5859052 | Fatty acid analogs and prodrugs Novel derivatives of fatty acid analogs that have from one to three heteroatoms in the fatty acid moiety which can be oxygen, sulfur or nitrogen, are disclosed in which the carboxy-terminus has been modified to form various amides, esters, ketones, alcoho... | 01/12/1999 |
| 5750797 | Process for the production of hydrofluoroethers Briefly, in one aspect, this invention provides an improved alkylation process for the preparation of primary and secondary hydrofluoroether compounds, said process comprising: (1) combining in a polar, aprotic solvent: a) a fluorinated carbonyl-containing com... | 05/12/1998 |
| 5637780 | Method for preparing alkylating agents and their use for alkylating cyclic ureas This invention relates to methods for preparing alkylating agents and use of the agents prepared. In particular, this invention relates to preparation methods for hydroxy halide and organooxy halide alkylating agents and their use for alkylating cyclic ur... | 06/10/1997 |
| 5637775 | Process for the preparation of halogenated ethers The invention relates to a process for the preparation of compounds of formula I ##STR1## wherein R is mono- or disubstituted lower alkyl, the substituents being selected from halogen and lower alkoxy, with the proviso that said substituents are... | 06/10/1997 |
| 5600022 | Method for recovering chloromethyl methyl ether In a reaction for introducing chloromethyl groups into an aromatic crosslinked copolymer by reacting chloromethyl methyl ether to the aromatic crosslinked copolymer in the presence of a chloromethylation reaction catalyst, a method for recovering chlorome... | 02/04/1997 |
| 5576465 | Process for preparing unsaturated ethers A process for preparing unsaturated ethers of the formula (1) ##STR1## from acetals or ketal of the formula (2) ##STR2## is improved by heating the acetals or ketals at from 100° to 250° C. in a high-boiling, branched carboxylic acid and obtai... | 11/19/1996 |
| 5491145 | Imidazopyridazines, their production and use Novel compound of the general formula: ##STR1## wherein R1 stands for a hydrogen atom, an optionally substituted lower alkyl group or a halogen atom; R2 and R3 respectively stand for a hydrogen atom or an optionally s... | 02/13/1996 |
| 5482650 | Liquid crystal compounds having perfluoroether terminal portions Fluorine-containing liquid crystal compounds comprise a fluorocarbon terminal portion having at least one catenary ether oxygen and a hydrocarbon terminal portion, the terminal portions being connected by a central core. The compounds have smectic or late... | 01/09/1996 |
| 5446211 | Chlorination of difluoromethyl methyl ether The synthesis of fluorinated dimethyl ethers of the formula CF2 HOCClx Fy H3-(x+y) wherein x is 0, 1 or 2; y is 1, 2 or 3; and wherein (x+y) is 1, 2 or 3. The process involves chlorination of methyl difluorometh... | 08/29/1995 |
| 5401886 | Fluorinated polymer and monomers Disclosed herein is a partially fluorinated polymer containing cyclic units. The polymer is particularly useful in for coatings and encapsulants. Also disclosed herein is the novel monomer from which the polymer is made, and a novel intermediate for that ... | 03/28/1995 |
| 5260492 | Fluorinated monomers and polymers Disclosed herein are novel monomers of the formula CF2 .dbd.CF(CF2)n CH2 OCF.dbd.CF2, wherein n is 1, 2 or 3, and novel intermediates of the formula CF2 ClCFCl(CF2)n C... | 11/09/1993 |
| 5196611 | Preparation of alkyl, alkenyl, and alkynyl chlorides The preparation of an alkyl, alkenyl, or alkynyl chloride by the reaction of a corresponding alcohol with phosgene or thionyl chloride in the presence of a phosphine oxide acting as catalyst, wherein the catalyst used is an aliphatic, cycloaliphatic, or c... | 03/23/1993 |
| 5196600 | Synthesis of fluorinated dimethyl ethers A novel process is disclosed for the synthesis of fluorinated dimethyl ethers of the formula CF2 HOCClx Fy H3-(x+y) wherein x is 0, 1 or 2; y is 1, 2 or 3; and wherein the total x+y is 1, 2 or 3. The process inv... | 03/23/1993 |
| 5189227 | 1,2,4-trihalobutyl ethers 1,2,4-Trihalobutyl ethers of the formula ##STR1## in which X is halogen and R2 is unsubstituted or halo-substituted C1 -C10 alkyl, C3 -C6 -cycloalkyl that is unsubstituted or substituted by halog... | 02/23/1993 |
| 5030785 | Process for preparing long chain alkyl aromatic compounds employing Lewis acid-promoted zeolite catalysts Aromatic hydrocarbons are alkylated with relatively long chain alkylating agents, e.g., C6 + olefins, in the presence of, as catalyst, certain Lewis acid-promoted zeolites to provide long chain aromatic products which are useful, inter alia, as... | 07/09/1991 |
| 4968836 | Process for the preparation of substituted cyclopropanecarbaldehydes The invention relates to a process for the preparation of cyclopropanecarbaldehydes of formula ##STR1## in which R1 is C1 -C4 alkyl or benzyl, which comprises (a) reacting a tetrahydrofuran of formula ##STR2## ... | 11/06/1990 |
| 4845268 | Halogen-containing polyether A halogen-containing polyether comprising repeating units of the formula: wherein a, b, c, d, e and f are each an integer not less than 0 and satisfy the following equations: which may be prepared by ring-opening polymerizing 2,2,3,3-tetrafluorooxetane in the ... | 07/04/1989 |
| 4798906 | Preparation of alkoxy halides Alkyl-, aryl- or alkylaryl-alkoxy halides are prepared by reacting the corresponding alcohol, phenol or alkyl phenol with ethylene oxide and/or propylene oxide in the presence of an amine catalyst to form an alkoxy alcohol, and directly reacting the latte... | 01/17/1989 |
| 4724092 | Fluorine-containing grease composition A fluorine-containing grease composition comprising a halogen-containing polyether of the formula: wherein a, b, c, d, e and f are each an integer not less than 0 and satisfy the following equations: and, and 0.5 to 60% by weight of a fluororesin base on the w... | 02/09/1988 |
| 4714785 | Method for converting organic chloroformate to the corresponding organic chloride Organic haloformate, e.g., chloroformate, compounds are converted to their corresponding halides, e.g., chlorides, by heating the haloformate, e.g., between 90° C. and 150° C., in the presence of a catalytic amount of a carbon catalyst for a time suffic... | 12/22/1987 |
| 4629814 | Process for preparing bis-bromoalkyl ethers This process relates to the preparation of unsubstituted or substituted bis-bromoalkyl ethers by reacting unsubstituted or substituted 1,3-dioxolane or unsubstituted or substituted 1,3-dioxane with thionyl bromide. The bis-bromoalkyl ethers made by this p... | 12/16/1986 |
| 4622431 | Method for converting organic chloroformate to the corresponding organic chloride Organic chloroformate compounds are decomposed to their corresponding chlorides by heating the chloroformate, e.g., between 100° and 175° C., in the presence of a catalytic amount of solid poly(vinylpyridine), e.g., poly(4-vinylpyridine), for a time suf... | 11/11/1986 |
| 4605784 | Process for the preparation of ether-containing chlorides Disclosed is a process for the preparation of ether-containing chlorides by reacting an ether-alcohol, ether-glycol or ether-polyglycol with a chlorinating agent such as thionyl chloride in the presence of a catalytic amount of a quaternary ammonium salt,... | 08/12/1986 |
| 4431845 | Method for the preparation of hydroxyl-terminated poly(haloalkylene ethers) A method for the preparation of hydroxyl-terminated poly(haloalkylene ethers) is disclosed wherein a catalyst system comprising a fluorinated acid and a polyvalent tin compound is utilized.... | 02/14/1984 |