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P C U K Produits Chimiques Ugine Kuhlmann Patents
Assignee:
P C U K Produits Chimiques Ugine Kuhlmann
Address:
Courbevoie, FR
No. of patents:
51
Patents:


1 2










Patent Number Title Of Patent Date Issued
4983769 Perfluoroalkylamine oxides and use of these products in fire extinguishing compositions January 8, 1991
Perfluoroalkyl amine oxides of the following formula: ##STR1## where C.sub.n F.sub.2n+1 is a straight or branched perfluorinated chain, n is a whole number from 1 to 20, a is a whole number from 2 to 10, p is a whole number from 0 to 10, R.sub.1 is either a hydrogen atom or an alkyl
4740603 Process for the preparation of .epsilon.-caprolactone April 26, 1988
This invention relates to a process for the preparation of stable solutions of .epsilon.-caprolactone by means of the oxidation of cyclohexanone by a percarboxylic acid containing 2 to 4 carbon atoms. According to the invention, the percarboxylic acid is in the form of a crude solution,
4613723 Process for effecting hydrocarbon isomerization or alkylation September 23, 1986
The present invention relates to supported superacidic catalysts comprising C.sub.4 -C.sub.18, preferentially C.sub.6 to C.sub.12, perfluorinated alkanesulfonic acid absorbed on suitable supports, such as fluoridated alumina, alumina silica and other chalcides having bonded thereto s
4547606 Selective isomerization of di-isopropyl benzene to meta-di-isopropyl benzene October 15, 1985
Resorcinol is prepared in high yield and purity by an improved process through superacid (such as perfluorinated alkanesulfonic acids of one to eighteen carbon atoms or polymeric perfluorinated resinsulfonic acids, such as acidified Nafion-H, catalyzed cleavage rearrangement reaction of
4547604 Selective isopropylation of cumene to meta-diisopropylbenzene October 15, 1985
Resorcinol is prepared in high yield and purity by an improved process through superacid (such as perfluorinated alkanesulfonic acids of one to eighteen carbon atoms or polymeric perfluorinated resinsulfonic acids, such as acidified Nafion-H, catalyzed cleavage rearrangement reaction of
4496760 Process of decomposition of a complex of ortho-benzoyl benzoic acid, hydrogen fluoride and boron January 29, 1985
A process for the decomposition of complexes of ortho-benzoyl benzoic acids, hydrogen fluoride, and boron trifluoride, whether or not the ortho-benzoyl benzoic acid is substituted, is disclosed wherein the ortho-benzoyl benzoic acid is obtained separately from the hydrogen fluoride a
4474895 Catalysts for gaseous phase fluorination of aliphatic chlorinated and chlorofluorinated hydrocar October 2, 1984
This invention relates to improved catalysts for gaseous phase fluorination of aliphatic chlorinated and chlorofluorinated hydrocarbons by hydrofluoric acid. The catalysts are characterized by an active carbon support having a total specific surface area greater than about 1000 m.sup
4459240 Process for the preparation of percarboxylic acids July 10, 1984
Process of preparing substantially anhydrous solutions of percarboxylic acids which comprises reacting hydrogen peroxide contained in an aqueous solution with a water miscible carboxylic acid in the presence of a catalyst and an azeotropic organic solvent, continuously removing the w
4453024 Process for the meta-hydroxylation of alkylphenols and the ethers thereof in a superacidic mediu June 5, 1984
Process for hydroxylating alkylphenols in which the carbon atoms of the alkyl group bonded to the aromatic nucleus has at least one hydrogen atom bonded thereto and the phenolic ethers thereof, at the meta position relative to the phenol or ether function, by reacting the phenol compound
4451682 Process for the preparation of true acetylene hydrocarbons having a perfluorinated chain May 29, 1984
Process for the preparation of true acetylene hydrocarbons with a perfluoro chain, characterized by dehydroiodination with an alkali metal hydroxde in an alcoholic medium of the iodohydrin ##STR1## wherein R.sub.F is a straight or branched perfluoroalkyl chain C.sub.n F.sub.2n+1
4451333 Process for cooking lignocellulosic materials intended for the production of paper pulp with 1,2 May 29, 1984
Process for cooking lignocellulosic materials by heating the said materials in a cooking solution containing caustic soda with or without an alkali metal sulphide, in which the solution used contains about 0.01% to 10%, preferably 0.05% to 2%, by weight of 1,2,3,4-tetrahydro-9,10-ant
4447660 Process for the isomerization of ortho-and para-bromophenols or the ethers thereof into meta-bro May 8, 1984
Process for the isomerization of ortho- and para-bromophenols or the ethers thereof into corresponding meta-brominated derivatives by isomerizing ortho- and para-bromophenols in the corresponding ethers in the presence of a liquid superacid at a temperature in the region of ambient t
4439534 Catalyst of chromium oxide microspheres and process for its preparation March 27, 1984
This invention relates to catalysts for gaseous phase fluorination of aliphatic chlorinated derivatives by hydrofluoric acid. The catalysts comprise chromium oxide microspheres obtained by a sol-gel process. This invention also relates to gaseous phase fluorination processes for alip
4438027 Chlorinated alkylaromatic based compounds and new liquid dielectrics March 20, 1984
New compounds of the formula: ##STR1## where n, x, y and z have value 1 or 2, their process of preparation and their use as dielectrics such as insulating fluids for transformers alone or in mixture with one or more products of general formula: ##STR2## where a varies from 2
4424382 Superacid catalyzed preparation of resorcinol from meta-isopropylepheol January 3, 1984
Resorcinol is prepared by an improved process through superacid (such as perfluorinated alkanesulfonic superacids of one to eighteen carbon atoms or polymeric perfluorinated resinsulfonic acids, such as Nafion-H) catalyzed cleavage-rearrangement reaction of meta-isopropylphenol hydro
4423254 Superacid catalyzed preparation of resorcinol from meta-isopropylphenol December 27, 1983
Resorcinol is prepared by an improved process through superacid (such as perfluorinated alkanesulfonic superacids of one to eighteen carbon atoms or polymeric perfluorinated resinsulfonic acids, such as Nafion-H catalyzed cleavage-rearrangement reaction of meta-isopropylphenol hydrop
4423192 Lubricated thermoplastic compositions of polyvinylidene fluoride December 27, 1983
A process for lubricating polyvinylidene fluoride consisting of introducing into a polyvinylidene fluoride base resin from 0.1 to 10% by weight of low molecular weight polytetrafluoroethylene, in the preferred embodiment.
4419528 Regioselective preparation of .alpha.- or .beta.-naphthol December 6, 1983
A process for the selective preparation of .alpha.- or .beta.-naphthol, respectively, by acid (Lewis or Bronsted, or superacidic mixtures thereof) catalyzed hydroxylation of naphthalene with hydrogen peroxide. Conventional (non-superacidic) acid systems, such as hydrogen fluoride, py
4418004 Catalysts for gaseous phase fluorination of aliphatic chlorinated and chlorofluorinated derivati November 29, 1983
This invention relates to improved catalysts for gaseous phase fluorination of aliphatic chlorinated and chlorofluorinated derivatives by hydrofluoric acid. The catalysts are characterized by an active carbon support having a total specific surface area greater than about 1000 m.sup.2 /g
4417056 Process for preparing 2-(4-aminophenyl)-5-amino-benzimidazole and substituted derivatives November 22, 1983
The invention concerns a process for the preparation of 2-(4-aminophenyl)-5-aminobenzimidazole and substituted derivatives by catalytic cycloreduction of starting material N-(4-nitrobenzoyl)-2,4-dinitroaniline or a substituted derivative by hydrogen gas. According to the invention, t
4416987 Method of synthesizing proteins from methanol November 22, 1983
The invention disclosed provides a method for synthesizing proteins by means of strains of microorganisms improved as regards their performances in using methanol.
4415461 Process for treating residual waters containing aromatic amines November 15, 1983
A process for destroying primary aromatic amines in residual waters by treating the residual waters containing said amines at a temperature between 40.degree. C. and 90.degree. C. and for a period longer than 5 minutes with a mixture of sulfuric acid and nitric acid or with a mixture
4414151 Chromiferous complex dyestuffs, a process for their preparation and their application November 8, 1983
The invention relates to new chromiferous complex dyestuffs of the general formula: ##STR1## in which R represents a hydrogen atom or a .beta.-hydroxyethyl group, A represents a hydrogen atom, a phenyl group or a phenyl group substituted by one or more halogen atoms or alkyl grou
4381261 Structurally colored cross-linkable compounds, their preparation and their utilization in coatin April 26, 1983
Structurally colored cross-linkable compounds usable in coating compositions of the formula: ##STR1## wherein A is a single bond, an oxygen atom or an ##STR2## group, R.sub.1 being an alkyl group containing 1 to 6 carbon atoms, .beta.-cyanoethyl, methoxymethyl, cyclohexyl, ph
4379092 Process for the preparation of anthraquinone and its substituted derivatives April 5, 1983
A process for the preparation of anthraquinone compounds by condensation of phthalic anhydride with a benzene derivative wherein a mixture of hydrofluoric acid and boron trifluoride is utilized as catalyst.
4371698 Process for the purification of mercaptobenzothiazole February 1, 1983
Process for the purification of mercaptobenzothiazole in which the crude product resulting from the reaction of aniline, sulfur and carbon disulfide according to the known process is treated with aniline.
4366300 Composition and process for the protection of materials against spots or stains December 28, 1982
The invention relates to a composition for the protection of materials against contaminations, spots and stains.This liquid composition comprises by weight 0.1 to 1% of at least one fluorinated resin based on acrylic or methacrylic esters of fluorinated sulfonamido-alcohol, associated or
4366299 Copolymers containing fluorine and their use for the water-repellent and oil-repellent treatment December 28, 1982
The invention relates to fluorinated copolymers and their application to the waterproofing and oil-resistance treatment of various substrates. These copolymers comprise by weight:(a) 35 to 98% of a monomer or monomers of the formula: ##STR1## in which Rf is a perfluoro radical, Q is
4365100 Process for the preparation of 1,2,3,4-tetrahydro-9,10-anthracene-diol December 21, 1982
A process for the preparation of 1,2,3,4-tetrahydro-9,10-anthracene-diol, in which catalytic hydrogenation of 1,4,4a,9a-tetrahydro-anthraquinone is carried out in the liquid phase to give 1,2,3,4,4a,9a-hexahydro-9,10-anthracene-dione followed by isomerization of the latter in the pre
4362873 Process for the preparation of basic oxazine dyestuffs December 7, 1982
The invention relates to a process for the preparation of dyestuffs of the formula: ##STR1## in which R.sub.1 represents hydrogen, alkyl, alkenyl or aralkyl, R.sub.2 represents alkyl, alkenyl, cycloalkyl, aryl or aralkyl, R.sub.3 represents hydrogen, alkyl or alkoxy, R.sub.4 repr
4354948 Lubricating varnishes having a graphite fluoride base and method of preparing same October 19, 1982
Lubricating varnishes for metals obtained by mixing a dispersion of graphite fluoride in glycerine with a separately prepared aqueous dispersion of graphite fluoride, stabilized by a salt of a condensate of naphthalene sulfonic acid with formol.
4352857 Spherical crystalline sodium uranate and process of producing same by adjusting the uranium cont October 5, 1982
Sodium uranate which is easy to handle, characterized by the spherical form of the grains, the average diameter thereof, between 40 and 150 .mu.m, their uncompacted apparent bulk density of 2.5 to 3.5 g/cm.sup.3 and a flow value higher than or equal to 95, measured on the CARR scale prod
4348528 Process for the preparation of 1-phenyl-3-carbamoyl-5-pyrazolones September 7, 1982
The invention relates to the preparation of 1-phenyl-3-carbamoyl-5-pyrazolones of the formula: ##STR1## in which the two symbols R and R' may be the same or different and each represents a hydrogen atom, an alkyl radical or a substituted alkyl radical containing 1 to 4 carbon ato
4342684 Hydrosoluble pyrazolone trisazo dyestuffs derived from 4,4'-diamino-benzenesulfanilide August 3, 1982
Dyestuff of the formula: ##STR1## in which A represents a mono- or disulphonated naphthalene residue which is unsubstituted or substituted by a hydroxy group and/or by an amino group, B represents an aliphatic, aromatic or heterocyclic residue and D represents the residue of a py
4339614 Superacid catalyzed preparation of resorcinol from meta-isopropylphenol July 13, 1982
Resorcinol is prepared by an improved process through superacid (such as perfluorinated alkanesulfonic acids of one to eighteen carbon atoms or polymeric perfluorinated resinsulfonic acids, such as Nafion-H catalyzed cleavage-rearrangement reaction of meta-isopropylphenol hydroperoxide i
4339613 Superacid catalyzed preparation of resorcinol from meta-diisopropylbenzene July 13, 1982
Resorcinol is prepared in high yield and purity by an improved process through superacid (such as perfluorinated alkanesulfonic acids of one to eighteen carbon atoms or polymeric perfluorinated resinsulfonic acids, such as acidified Nafion-H, catalyzed cleavage-rearrangement reaction of
4338260 Preparation of percarboxylic acids July 6, 1982
A process for the preparation of percarboxylic acids by the action of hydrogen peroxide on water miscible carboxylic acids in the presence of a boric acid catalyst and a solvent capable of forming a heteroazeotrope with the water and continuously eliminating the water which may have been
4337344 Process for the preparation of dibenzothiazyl disulfide June 29, 1982
A process for the preparation of dibenzothiazyl disulfide by oxidation of mercaptobenzothiazole in aqueous suspension by means of hydrogen peroxide, in which the oxidation is effected in the presence of ethylenediaminetetraacetic acid or an alkali metal salt derived therefrom.
4336032 Process for stabilizing mixtures of gasoline and methanol June 22, 1982
A process for stabilizing mixtures of gasoline and methanol containing at least 30% by volume of methanol is disclosed wherein a primary, linear or branched chain monohydroxylated aliphatic saturated alcohol containing from 8 to 15 carbon atoms or a mixture of such alcohols, is added to
4335050 Process for the preparation of the 5- and 6-nitro derivatives of 1,2,3,4-tetrahydro-anthraquinon June 15, 1982
Process for the preparation of the mononitro derivatives substituted in positions 5 or 6 of 1,2,3,4-tetrahydro-anthraquinone, which comprises nitrating 1,2,3,4,4a,9a-hexahydro-9,10-anthracene-dione by means of nitric acid or a mixture of nitric acid and sulfuric acid.
4330485 Preparation of percarboxylic acids May 18, 1982
Process for preparation of percarboxylic acids by the reaction of hydrogen peroxide and a water-miscible carboxylic acid, in the presence of a solvent capable of forming a heteroazeotrope with water, and in the presence of a metalloid oxide catalyst.
4330323 Dichloroacetamide and trichloroacetamide derivatives which are antidotes against herbicides May 18, 1982
The compounds of the formula: ##STR1## in which R.sub.1 represents a dichloromethyl or trichloromethyl group, X.sub.1 represents a chlorine or fluorine atom, X.sub.2 represents a chlorine or fluorine atom, X.sub.3 represents a hydrogen, chlorine or fluorine atom, R.sub.2 represen
4323515 Process for the preparation of organic isocyanates from nitro derivatives April 6, 1982
A process for the synthesis of aromatic isocyanates by the reduction of aromatic derivatives with carbon monoxide in the presence of catalysts consisting of metal complexes of porphyrins. In one embodiment, the metallic porphyrin is synthesized in situ from a porphryin and a metal or
4318988 Process for biological denitrification of effluents March 9, 1982
The present invention is directed to a process for biological denitrification of effluents, containing up to 10 g/l of nitric nitrogen, which comprises using an active denitrification support made of selected high performance denitrifying bacteria fixed on a neutral support.
4314979 Industrial process for continuous production of zeolite A February 9, 1982
A process for continuous preparation of zeolite A of constant and homogeneous quality, consisting of instantly and continously mixing a sodium silicate solution and a sodium aluminate solution in the correct proportions and at an elevated temperature followed by transfer of the resul
4314907 Oil additive compositions for internal combustion engines February 9, 1982
Oil additive compositions for internal combustion engines, containing at least one dithiophosphate, at least one fatty amide and a fluorographite CF.sub.x, where x is between about 0.6 and 1, and oils containing such compositions.
4299775 Process for the preparation of 3-cyano-3,5,5-trimethylcyclohexanone November 10, 1981
Process for the preparation of 3-cyano-3,5,5-trimethylcyclohexanone from isophorone and cyanides, characterized by the fact that an organic phase containing the isophorone and an aqueous phase containing the cyanide are brought into contact in the presence of a catalytic amount of a phas
4297288 5-Amino-1,2,3,4-tetrahydroanthraquinone and its preparation October 27, 1981
5-amino-1,2,3,4-tetrahydroanthraquinone, as a new industrial product, is disclosed together with its preparation by reduction from 5-nitro-1,2,3,4-tetrahydroanthraquinone.
4290770 Process for the coloration of hydrophobic fibers September 22, 1981
The invention relates to the coloration of artificial or synthetic materials. There is used as disperse dyestuff a compound of the general formula: ##STR1## in which R.sub.1 represents a hydrogen atom or a nitro group, R.sub.2 represents a hydrogen or halogen atom or a nitro, tri
4288646 Regioselective preparation of .beta.-isopropylnaphthalene over superacidic solid or supported pe September 8, 1981
A process for the production of .beta.-isopropylnaphthalene in high regioselectivity (90-98%) by alkylation of naphthalene over solid or supported superacid catalysts, such as a perfluorinated alkanesulfonic acid of four to eighteen carbon atoms (C.sub.4 F.sub.9 SO.sub.3 H to C.sub.1
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