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JP2000136153A |
To provide a method for producing cyclopentyl chloride, capable of profitably producing the cyclopentyl chloride in a high yield by reacting cyclopentene with hydrogen chloride. This method for producing cyclopentyl chloride comprises re...
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JP2000119203A |
To provide a new hydrofluorocarbon composition having excellent distillation recovering property for reducing environmental pollution or a convenience of re-using and also provide a method for its recovery.This heptafluorocyclopentane co...
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JP2000080051A |
To effectively obtain 1,1,9,9-tetrabromo-[2,2]-paracyclophane in a short time without using carbon tetrachloride as the solvent which is difficult to use in an industrial scale by carrying out the bromination of a specific paracyclophane...
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JP2993390B2 |
PURPOSE: To provide a near-azeotropic blend which is used as a refrigerant, etc., and is useful as a substitute for R-205. CONSTITUTION: This blend comprises pentafluoroethane, 1,1,1-trifluoroethane, and at least one compd. selected from...
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JP2988629B2 |
To obtain a new compound scarcely having possibility of destructive decomposition, almost free from producing a gaseous by-product in high ratio therewith and having effective fluorination ability and having higher heat stabil ity. This ...
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JPH11335309A |
To obtain a fluorinated unsaturated hydrocarbon useful as a raw material for producing substitutes for CFC (fluorocarbons) in the presence of a relatively small amount of a catalyst in a high yield by subjecting a chlorofluorocarbon to a...
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JPH11322644A |
To effectively and economically produce a hydrofluorocarbon having a bond of -CClF-CF2-. This method is conducted by hydroreducing a chlorofluorocarbon having a bond of -CClF-CF2- in a polar solvent in the presence of a rare metal cataly...
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JP2945693B2 |
This invention pertains to a method for liquid phase fluorination for perfluorination of a wide variety of hydrogen-containing compounds.
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JP2941444B2 |
Process for the racemization of an optically active amino acid amide by reacting the amino acid amide with a carboxylic acid in the presence of a solvent, of water and of 0.5-4 equivalents of an aldehyde, calculated relative to the quant...
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JP2918063B2 |
PCT No. PCT/DE90/00658 Sec. 371 Date Feb. 28, 1992 Sec. 102(e) Date Feb. 28, 1992 PCT Filed Aug. 28, 1990 PCT Pub. No. WO91/03442 PCT Pub. Date Mar. 21, 1991.A process for separation of mixtures of partially- or perfluorinated hydrocarbo...
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JPH11106357A |
To obtain the subject chemically stable new compound large in elasticity constant ratio, low in viscosity, and excellent in low-temperature compatibility. This new compound is shown by the formula (R1 is H, cyano, a halogen, 1-20C alkyl ...
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JPH1180049A |
To obtain a new crystalline compound comprising a specific spiro ring in its molecule, capable of providing a negative dielectric constant anisotropy value large in absolute value, proper refractive index anisotropy, small elastic consta...
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JP2848869B2 |
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JP2848980B2 |
A process for the preparation of mixtures of chlorotetrafluoroethane and octafluorocyclobutane from the gas stream from the pyrolysis of chlorodifluoromethane at temperatures above 600 DEG C. is described in which the principal constitue...
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JPH1112204A |
To obtain a new compound useful as an additive for functional materials or as the precursor of the additive. A 9,10-dichloroanthracene compound of formula I [R1-R8 are each H, F, Cl, hydroxy, an alkoxy, an alkyl (a case wherein all of R1...
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JPH1112203A |
To obtain a new compound useful as an additive for functional materials or as the precursor of the additive. A compound of formula I [R1-R8 are each H, F, Cl, hydroxy, an alkoxy, an alkyl (a case wherein all of R1-R8 are H, respectively,...
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JP2844899B2 |
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JP2844900B2 |
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JPH111445A |
To obtain a new diacetylene compound having a large anisotropy of refractive index and useful as a constituting material for liquid crystal elements or as a constituent for liquid crystal compositions. A compound of formula I [A, B are e...
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JP2843629B2 |
Chiral or achiral cyclic compounds of formula R?1-(A?1-Z?1)m?-A?2-Q?1-C*RCF3?-X, wherein R?1 denotes alkyl or perfluoralkyl which can be interrupted by O- and/or -CO- and/or -CO-O- and/or -CH=CH- and/or -CH halogen- and/or -CHCN- and/or ...
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JP2834586B2 |
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JPH10316760A |
To obtain a polymer-containing solution having sufficient uniformity of a polymer in solution and being capable of forming a uniform polymer film on a solid surface such as a magnetic recording medium by dissolving or dispersing a fluoro...
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JPH10316597A |
To obtain the subject compounds containing trihydro- and tetrahydro- fluorinated saturated hydrocarbons at a specific ratio by catalytically hydrogenating a perfluro group bearing saturated hydrocarbon and unsaturated hydrocarbon over a ...
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JPH10316598A |
To obtain the subject compound that has high content of trihydro- fluorocarbon, excellent cleaning action and stability and is incombustible and useful as a cleaning agent by treating dihydro-fluorocarbon with alkali followed by hydrogen...
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JPH10316596A |
To obtain the subject compounds that contains trihydrofluorinated saturated hydrocarbon and dihydrofluorinated saturated hydrocarbon at a specific ratio by treatment of crude perfluoroalkenes with activated carbon followed by catalytic h...
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JP2809620B2 |
To provide the subject new compound useful as an inert fluid. This compound is expressed by the formula I (Z is COOCH3, COOC2H5 or COOC2H4OCH3), e.g. dimethyl 1,3-perfluorocyclohexanedicarboxylate of the formula II. The objective compoun...
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JPH10245349A |
To obtain the subject new liquid-crystalline compound having steep threshold characteristics, having good compatibility with other liquid-crystalline compounds, and having a low viscosity, a proper refractive index anisotropic value and ...
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JPH10236990A |
To obtain a low-viscosity liquid crystal compound suitable for a liquid crystal display element, excellent in negative anisotropic value of dielectric constant, optical anisotropy, voltage retention, stability and compatibility, containi...
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JP2773902B2 |
Chromogenic dicyanomethylenepyrazolinone for thermographic recording processes and the corresponding cyanomethylene dyes of the formula (1) or (6) in which R is hydrogen, hydroxyl, amino, alkyl, cycloalkyl, aryl, aralkyl or a heterocylic...
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JPH10506926A |
(57) [Summary] Formula C useful as a refrigerant, cleaning agent, aerosol propellant, thermal transfer medium, gaseous dielectric, fire extinguishing agent, as a swelling agent for polymers such as polyolefins and polyurethanes, and as a...
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JPH10182516A |
To provide a process for purifying octafluorocyclobutane in high yield. Octafluorocyclobutane is separated from a mixture of octafluorocyclobutane and octafluorobutene by chlorinating octafluorobutene in the mixture to form octafluorodic...
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JP2764293B2 |
Tolanes having the formula (I): R<1>-(A<1>-Z<1>)m-A<3>-C=C-A<4>-(A<2>)n-R<2>, in which R<1>, A<1>, Z<1>, m, A<3>, A<4>, A<2>, n and R<2> are as given in claim (1), and application of said tolanes as components of liquid crystal phases, p...
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JP2758473B2 |
In the process for preparing chlorotrifluoroethylene telomers by reaction of chlorotrifluoroethylene with CF3OF or Rx-CF2OF the yield of telomers with -F end groups is increased or mixtures of telomers containing species with -Cl end gro...
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JP2756424B2 |
PURPOSE: To obtain the subject compound having both of an acetylene-type unsaturated compound and an adamantyl-type group, having remarkable activities in the fields of differentiation and growth of cell, and useful for skin diseases ass...
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JP2710762B2 |
PURPOSE: To provide novel stilbene-based materials which do not exhibit irreversible photochemical reaction and are useful in preparing polymers with the use of electromagnetic wave. CONSTITUTION: Novel stilbene-based materials are repre...
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JP2711542B2 |
Optically active compounds of the cyclohexane series can be used as components of chirally tilted smectic liquid crystal phases.
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JP2708118B2 |
Di- and tri-substituted perfluorocycloalkane compounds which have a cyclohexane or decahydronaphthalene nucleus are provided. These perfluorocycloalkane compounds are carbonyl fluorides and derivatives thereof.
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JPH09301897A |
To obtain the subject low-viscosity compound having relatively broad liquid crystal phase and useful as a component of a liquid crystal composition. This new compound is shown by formula I [R1 is H, F, cyano or R3(O)m; R3 is a (F-substit...
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JP2672292B2 |
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JP2667294B2 |
Indane and indene derivs. of formula (I) and their salts are new. In (I), R1 = X(CH2)nAr, X(CH2)nR8 or a gp. (a); R2 = H, Ar or (a); P1 = X(CH2)nR8; P2 = X(CH2)nR8 or XR9Y; R3, R5 = R11, H, OH, 1-8 alkoxy, S(O)qR11, N(R6)2, Br, F, I, Cl,...
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JP2665400B2 |
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JP2662607B2 |
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JPH09268137A |
To obtain a new liquid crystal compound, having a sufficiently large Δn, excellent in compatibility with another liquid crystal compound, especially in low temperature compatibility, chemically stable and useful for producing a liquid c...
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JPH09221433A |
To obtain a new chemically stable liquid crystalline alkenylcyclohexene derivative, having a large elastic constant ratio and excellent in compatibility with other liquid crystalline compounds, especially in the compatibility at a low te...
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JPH09221435A |
To obtain a new liquid crystal compound excellent in compatibility, compatibility with other liquid crystal compounds esp. at a low-temperature, having a large positive dielectric constant anisotropy and an extremely low viscosity and al...
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JPH09202738A |
To obtain the subject compound having a broad liquid crystal temperature range, low viscosity, large refractive index anisotropy and large elastic constant ratio K33/K11. The liquid crystal compound is expressed by formula I (R is a 1-10...
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JPH09194405A |
To produce a fluorocyclohexyltolan derivative useful for a blending component for a liquid crystalline composition, excellent in compatibility and rapid response and having a low viscosity. This fluorocyclohexyltolan derivative represent...
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JPH09157194A |
To obtain the subject compound in a high yield, useful as a raw material of a medicine, an agrochemical and a functional polymer by reacting an alkene with hydrogen chloride by using a halogenated metal catalyst in the presence of an org...
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JPH09157192A |
To obtain the subject compound in a high yield, useful as a raw material of a medicine, an agrochemical and a functional polymer by reacting an alkane with hydrogen chloride by using a specific compound in the presence of a halogenated m...
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JPH09143107A |
To obtain in high yield a chlorinated organic compound useful as a raw material for medicines, agrochemicals or functional polymers. This chlorinated organic compound (e.g. cyclobutyl chloride) is obtained by reaction of an alkene [pref....
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