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| Number | Title | Issue Date |
| 7102027 | Adamantanetricarboxylic acid derivatives An adamantanetricarboxylic acid derivative is represented by following Formula (1): wherein X is a hydrogen atom or a hydrocarbon group; and R1, R2 and R3 may be the same as or di... | 09/05/2006 |
| 7034181 | Method for producing o-chloromethyl benzoic acid chlorides The invention relates to a method for producing o-chloromethyl benzoic acid chlorides of formula (I), in which R1 to R4 can be the same or different and represent hydrogen C1–C4 alkyl, halogen or trifluoromethyl, by reac... | 04/25/2006 |
| 7002040 | Process for purifying fluoroxy compounds This invention relates generally to a improvement in a process for the purification of fluoroxy compounds, such as bis(fluoroxy)difluoromethane and fluoroxytrifluoromethane produced by the fluorination of carbon oxides. The improvement in effecting purification of t... | 02/21/2006 |
| 6998506 | Process for preparing acylfluorides A process for preparing acylfluorides by reaction of carbonyl fluoride COF2 with compounds having general formula: T=CR1R2 (I) wherein: T is O or CF2 ... | 02/14/2006 |
| 6852884 | Process for preparing acylfluorides A process for preparing acylfluorides by reaction of carbonyl fluoride COF2 with compounds having general formula: T=CR1R2 (I) wherein: T is O or CF2 ... | 02/08/2005 |
| 6727385 | Method for producing o-chloromethyl benzoic acid chlorides A process for preparing o-chloromethylbenzoyl chlorides of the formula I, in which R1 to R4 can be identical or different and are hydrogen, C1-C4-alkyl, halogen or trifluoromet... | 04/27/2004 |
| 6677479 | Substituted fluoroaromatics, process for preparing them and their use Compounds of the formula (I) and also process for preparing them ##STR1## where substituents X1, X2, Y and Z are defined as follows: X1 is H or F X2 is H or F Y is CI, Br, or I Z is CHO or COOH or CN n... | 01/13/2004 |
| 6372264 | Method of reducing calcified arterial plaque buildup and cellular malfunction and for balancing ionic calcium A method for reducing calcified arterial plaque buildup and cellular malfunction with the administration of therapeutically effective dosages of a compounded coordination complex of magnesium. The method includes steps for making and administering a compo... | 04/16/2002 |
| 6288244 | Process for the preparation of 3, 4-dihydroxybutanoic acid and derivatives thereof from substituted pentose sugars A process for the preparation of 3,4-dihydroxybutanoic acid (I) and 3-hydroxy-γ-butyrolactone (V) thereof from a 3-leaving group substituted pentose source is described. In particular, the process relates to the synthesis of (R)-3,4-dihydroxybutanoic aci... | 09/11/2001 |
| 5770763 | Difunctional bitricyclodecatriene monomers Novel difunctionalized cyclobutabenzene monomers of the general formula: ##STR1## wherein Z can be hydrogens or a cyclobutane ring; and X and Y are carboxyl, amino, alcohol, isocyanate, acid halide, or bis-acyl halide groups. Exemplary difunctional b... | 06/23/1998 |
| 5712409 | Naphthyl and ether chain-containing carboxyl derivatives New aromatic dicarboxylic acids, 1,4- or 2,6-Bis(p-carboxyphenoxy)naphthyl is prepared by the reaction of p-fluorobenzonitrile with 1,4-naphthalenediol, followed by hydrolysis. Wholly aromatic polyamides having superior solubility in a variety of organic ... | 01/27/1998 |
| 5416243 | Cyclofluoroalkylated fullerene compounds Cyclofluoralkylated fullerene compounds are prepared by reacting the fullerenes with a fluoroalkene as exemplified by tetrafluoroethylene or perfluoromethyl vinyl ether under thermolysis conditions as exemplified by temperatures of 200° C., pressure and ... | 05/16/1995 |
| 5382718 | Cyclofluoroalkylated fullerene compounds Mixtures of cyclofluoroalkylated fullerenes are provided by the thermal 2+2 cycloaddition of fluoroalkenes to a solution or slurry of a fullerene. The cyclofluoroalkylated fullerene mixtures are useful as lubricants or additives to lubricants; in fluoroca... | 01/17/1995 |
| 5278340 | Oligohexafluoropropylene oxide derivative and process of producing the same Oligohexafluoropropylene oxide derivatives represented by the general formula (I): ##STR1## wherein Rf represents a perfluoroalkyl group having 1 to 10 carbon atoms and n is an integer of 0 to 100 or the general formula (II): ##STR2##... | 01/11/1994 |
| 5246587 | Interfacially synthesized reverse osmosis membranes and processes for preparing the same Water permeable reverse osmosis membranes are prepared by interfacially polymerizing on a microporous support an essentially monomeric polyamine reactant having at least two amine functional groups per reactant molecule, and an essentially monomeric, at l... | 09/21/1993 |
| 5206391 | Process for the preparation of halophthalic anhydrides A process for the preparation of a halophthalic anhydride, such as chlorophthalic anhydride, comprising the liquid phase reaction of bromine with a halogen substituted hexa- or tetra-hydrophthalic anhydride to produce halophthalic anhydride and gaseous HB... | 04/27/1993 |
| 5202469 | Partially fluorinated dicarboxylic acid and the acid chloride thereof, and a process for their preparation Partially fluorinated dicarboxylic acid and the acid chloride thereof, a process for its preparation and its use. The compound of the formula (I) ##STR1## and the acid chloride thereof are prepared by air oxidation in the presence of a catalyst mixtu... | 04/13/1993 |
| 5130454 | Polytetrahydrofuran derivatives having terminal aromatic groups Polytetrahydrofuran derivatives of the general formula ##STR1## where n is from 2 to 70, X is the bridge member --NH-- or --O-- and R1 and R4 are each hydrogen or various radicals.... | 07/14/1992 |
| 5110983 | Hexafluoroisopropyl-containing monomers, process for their preparation and their use Compounds of the formula I ##STR1## can be prepared by various process steps from 2-(4-methylphenyl)-2-hexafluoroisopropanol. Hexafluoroisopropyl-containing monomers are important starting compounds in the preparation of linear polycarboxamides and p... | 05/05/1992 |
| 5043257 | Azo dyes for photographic silver dye bleach material Azo dyes of the formula ##STR1## where X is alkyl or alkoxy each of 1 to 4 carbon atoms or halogen, X' is hydrogen, alkyl or alkoxy each of 1 to 4 carbon atoms or halogen, Y and Y' are independently of each other hydrogen or halogen, Z is hydrogen, a... | 08/27/1991 |
| 5021602 | Reactive compounds containing perfluorocyclobutane rings Novel compounds have at least one perfluorocyclobutane ring and at least two functional groups suitable for forming condensation polymers. Preferably the compounds have a structures represented by Formula II: ##STR1## wherein R and R' independently r... | 06/04/1991 |
| 5011924 | Chromogenic cryptahemispherands and their preparation The present invention resides in the discovery of a new class of compounds defined herein as "chromogenic cryptahemispherands" useful for the measurement of ions, in particular, ions in aqueous solution, which have the structure ##STR1## wherein... | 04/30/1991 |
| 4952708 | Method for preparing biaryl compounds An improved method for making biaryl compounds is disclosed, in which an aromatic acid halide having at least one strong electron-withdrawing group attached to or within the aromatic ring is reacted with at least one polysilane in the presence of an effec... | 08/28/1990 |
| 4904417 | Fluorine-containing polyether and process for preparing the same A fluorine-containing polyether of the formula: A--X--A' wherein A and A' are the same or different and are each --COF, --COCl or --COOH, and X is --CF2 CF2 --Rf --O--Cm F2m --O--Rf 'CF2 | 02/27/1990 |
| 4871484 | Process for the preparation of 2,2-bis-chloro-methylalkanecarboxylic acid chlorides A process for the preparation of a 2,2-bis-chloro-methyl-alkanecarboxylic acid of the formula ##STR1## in which R is hydrogen, alkyl, cycloalkyl or optionally substituted phenyl, which comprises reacting an oxetane-3-carboxylic acid of the formula ... | 10/03/1989 |
| 4857660 | Certain 1-phenyl-cyclobutane-1,3-dicarboxylic acid type compounds 1-Phenyl-3-azabicyclo[3.1.1]-heptane-2,4-diones of the formula ##STR1## in which R1 represents hydrogen or a saturated or unsaturated, aliphatic, cycloaliphatic, cycloaliphatic-aliphatic, aromatic or aromatic-aliphatic hydrocarbon radical ... | 08/15/1989 |
| 4818771 | Diphenic acid bis(dicyclohexylamide) for clothrate compound, process for producing the same Diphenic acid bis(dicyclohexylamide) represented by the following formula: ##STR1## A process for producing diphenic acid bis(dicyclohexylamide) represented by the above formula, which comprises dimerizing a diazonium salt of o-aminobenzoic acid in t... | 04/04/1989 |
| 4814496 | Spiro(bis)indane bis(carboxyphenyl ethers) and derivatives thereof Esters of spiro(bis)indane bis(carboxyphenyl ethers) are prepared by the reaction of spiro(bis)indane bisphenol di-(alkali metal) salts with nitro- or chloro-substituted benzoic acid esters, and may be converted to the free acids and thence to the acid ch... | 03/21/1989 |
| 4792618 | Fluorinated carbocylic compounds Fluoro-substituted carbocyclic compounds are prepared by (A) reacting hydrogen fluoride with a chloro-cyclohexenyl compound of the formula ##STR1## where R1 and R2 are independently selected from the group consisting of --H, --... | 12/20/1988 |
| 4764640 | Substituted azabicycloheptanes, the use thereof, pharmaceutical preparations that contain these compounds, and processes for the manufacture of these compounds 1-phenyl-3-azabicyclo[3.1.1]-heptane-2,4-diones of the formula ##STR1## in which R1 represents hydrogen or a saturated or unsaturated, aliphatic, cycloaliphatic, cycloaliphatic-aliphatic, aromatic or aromatic-aliphatic hydrocarbon radical ... | 08/16/1988 |
| 4657708 | Ethynyl-containing phthaloyl halides Aromatic monomers, each containing at least one o-ethynyl carboxylic acid halide subunit: ##STR1## wherein X is Cl or Br. These monomers can be reacted with amines to form aromatic polyamide resins which can be thermally treated to undergo intro... | 04/14/1987 |
| 4608206 | Fluorinated 3-ketoglutaroyl halides Compounds having the formula: ##STR1## where X is F or Cl, and a process for the preparation of such compounds.... | 08/26/1986 |
| 4602087 | Distyrylbiphenyls The distyrylbiphenyls of the formula ##STR1## in which X and X' independently of one another are a direct bond, oxygen, sulfur, --O--C1-3 -alkylene-CON(R4)--CON(R4)--, --O--C1-3 alkylene-COO--, OCO or --COO... | 07/22/1986 |
| 4582925 | Tetramethylbiphenylcarboxylic acids and derivatives thereof 2,2',6,6'-Tetramethyl-4,4'-dicarboxylic acid is prepared by the oxidation of bimesityl and derivatives of the dicarboxylic acid are used in the preparation of polyesters of high molecular weight.... | 04/15/1986 |
| 4476062 | Pseudo-p-1,1,2,2,9,9,10,10-octofluoro[2,2]-p-cyclophane bis-acid chloride Polyaromatic ether-sulfone-ketones containing fluoro-substituted-p-cyclophane units were prepared from isophthaloyl chloride, terephthaloyl chloride, diphenyl ether, diphenoxydiphenyl sulfone and a small amount of either 1,1,2,2,9,9,10,10-octafluoro[... | 10/09/1984 |
| 4469641 | Omega-fluorosulfato-perfluoro-(2-methyl-alkan-3-ones) Omega-fluorosulfato-perfluoro-(2-methyl-alkan-3-ones) of the formula ##STR1## which are intermediates in the preparation of perfluoro-isopropylketocarboxylic acid fluorides from omega-hydro-perfluoro-(2-methyl-alkan-3-ones).... | 09/04/1984 |
| 4451669 | Polyimide derivatives having terminal acetylenic groups Novel compositions comprising acetylenic polyhemi-amic acid compositions and processes for their preparation are disclosed herein. These new compositions are primarily derivatives of anhydride-terminated aromatic polyimides from which they are prepared by... | 05/29/1984 |
| 4433132 | Polyesters containing bis(trifluoromethyl)biphenylene radicals A class of polyesters comprising recurring units having certain bis(trifluoromethyl)biphenylene radicals is disclosed. The polyesters exhibit favorable solubility properties in certain organic solvents so as to facilitate the production of the polyesters ... | 02/21/1984 |
| 4377536 | Polyamide derivatives having unsaturated terminal amic acid groups Novel compositions comprising unsaturated polyhemi-amic acid compositions and processes for their preparation are disclosed herein. These new compositions are primarily derivatives of anhydride-terminated aromatic polyimides from which they are prepared b... | 03/22/1983 |
| 4339595 | Hexa(meta-,para-carboxyphenyl)benzene compounds Hexa(meta-,para-carboxyphenyl)benzene compounds. The esters are useful as plasticizers for polyvinylchloride, heat transfer agents, hydraulic fluids, and insulating oils. The acid is suitable as a cross-linking agent for polymers containing hydroxyl or am... | 07/13/1982 |
