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Solvay & Cie Patents
Assignee:
Solvay & Cie
Address:
Societe Anonyme) (Brussels, BE
No. of patents:
250
Patents:


1 2 3 4 5










Patent Number Title Of Patent Date Issued
6478828 Process for the crystallization of an inorganic substance November 12, 2002
A process for crystallization of an inorganic substance includes preparing a supersaturated solution of the inorganic substance to be crystallized in a solvent which is a liquid; forcing a stream of the supersaturated solution upwardly through successively a fluidized bed distributor of
5403667 Compatibilized compositions comprising a polyamide and polypropylene and adhesive composites con April 4, 1995
An adhesive composite including a layer consisting of a compatibilized composition including at least one polyamide, and at least one propylene polymer which is at least partially modified by a polar monomer and which has a melt flow index (MFI) measured according to ASTM standard D 1238
5362416 Suspensions of particles containing transition metal compounds in oils November 8, 1994
Suspensions, in oils, of particles containing a transition metal compound, which are spheroidal and of narrow particle size distribution.These suspensions can be employed in processes for the polymerization of alpha-olefins, carried out in the presence of an organoaluminium activator.
5346773 Adhesive composites and articles containing compatibilized composition comprising a polyamide an September 13, 1994
An adhesive composite including a compatibilized composition comprised of at least one polyamide, and at least one propylene polymer which is at least partially modified by a polar monomer and which has a melt flow index (MFI) measured according to ASTM standard D 1238-86 (230/2.16 c
5290322 Process for the crystallization of sodium bicarbonate March 1, 1994
Process for the manufacture of sodium bicarbonate particles having an ovoid or spherical shape, the process preparing an aqueous solution of sodium bicarbonate, which is supersaturated; circulating the aqueous solution supersaturated in sodium bicarbonate through a bed of crystals in ord
5286413 Mixtures of polar polymers and dedoped conductive polymers, processes for obtaining these mixtur February 15, 1994
A polymer mixture, including at least one conductive polymer which has been dedoped to provide at least one dedoped conductive polymer; and at least one polar polymer. The polymer mixture has outstanding dielectric properties so that the polymer mixture is useful for producing electronic
5284723 Electrochemical energy storage devices comprising electricaly conductive polymer and their uses February 8, 1994
The invention relates to electrochemical energy storage devices containing a composition comprising an electrically conductive polymer based on polypyrrole, substituted or otherwise, and ionic groups which comprise an R-sulphate or R-sulphonate group, R denoting an alkyl or aryl radical.
5279768 Process for the preparation of electrically conductive polymers derived from 3-alkylthiophenes January 18, 1994
The invention relates to a process for the preparation of electrically conductive polymers derived from 3-alkylthiophenes by chemical polymerization of the 3-alkylthiophene by means of a ferric salt, an alkyl halide and water.The invention also relates to electrically conductive devices
5262567 Compound including a guanidine group and an unsubstituted tetraphenylborate ion November 16, 1993
A compound useful in the synthesis of peptides containing arginine, and including a guanidine group and an unsubstituted tetraphenylborate ion, and having the formula: ##STR1## wherein A is a hydrogen atom, an amino acid group which is linked by a peptide bond and which may be su
5254777 Catalytic hydrochlorination system and process for the manufacture of vinyl chloride from acetyl October 19, 1993
Liquid catalytic system comprising at least one group VIII metal compound, a fatty amine hydrochloride whose melting point is greater than 25.degree. C. and an organic solvent. This catalytic system is suitable for the preparation of vinyl chloride by reacting acetylene with hydrogen
5254648 Process for the preparation of polythiophenes and electrically conducting devices containing the October 19, 1993
The invention relates to a process for the preparation of electrically conducting polymers based on polythiophenes by chemical polymerization of thiophene by means of a ferric salt, an alkyl halide and water.The invention also relates to the electrically conducting devices containing the
5247958 Safety valve, especially for a fuel tank vent pipe September 28, 1993
The valve, mounted on a vent pipe, allows the passage of gas in both directions, but prevents any escape of liquid fuel. The valve comprises a closed containment 7 equipped with a lower inlet port 8 and with an upper outlet port 9 which are connected to the vent pipe, a stationary circul
5236627 Compositions of electrically conductive polymers derived from substituted or unsubstituted pyrro August 17, 1993
The invention relates to a composition of electrically conductive polymers chosen from polypyrrole and/or substituted polypyrrole and ionic groups containing a 2-ethylhexylsulphate group.The invention also relates to a process for obtaining this composition.
5230935 Multilayer composites coextruded with the use of impact-reinforced impervious resin compositions July 27, 1993
Multilayer composites coextruded with the use of polyolefins and of impact-reinforced impervious resin compositions based on hydrolysed copolymers of vinyl acetate and ethylene comprising, as an additive improving the impact strength, elastomeric copolymers of ethylene and propylene
5221786 Process for the preparation of polythiophenes and electrically conducting devices containing the June 22, 1993
The invention relates to a process for the preparation of electrically conducting polymers based on polythiophenes by chemical polymerization of thiophene by means of a ferric salt, an alkyl halide and water.The invention also relates to the electrically conducting devices containing the
5209820 Baths and process for the chemical polishing of stainless steel surfaces May 11, 1993
Baths for the chemical polishing of stainless steel surfaces which comprise a mixture of hydrochloric acid, nitric acid and phosphoric acid, a substituted or unsubstituted hydroxybenzoic acid and an amine in aqueous solution.
5204423 Process for the preparation of polythiophenes by use of ferric salts and alkyl halides April 20, 1993
A process for the preparation of a polymer which is electrically conductive and which is based on polythiophene, the process including polymerizing thiophene in a reaction medium including thiophene, from 2.5 to 20 moles of an anhydrous ferric salt per mole of thiophene, from 0.04 to 1 l
5202237 Method of regulating expression in Bacillus subtilis using operator DNA April 13, 1993
This invention relates to operator DNA specific for the repressor of .phi.105 and to the use thereof. The sequence of the operator DNA is 5'-GACGGAAATACAAG-3', 5', GTCGGAAATACAAT-3', 5'-GACGAAATTCAAG-3' or 5'-GTCGTGAATACCAT-3.
5164432 Moulding compositions comprising polyolefins and cellulose fibres, process for their manufacture November 17, 1992
Moulding compositions comprising a polyolefin, cellulose fibres and an unsaturated organosilane exhibiting a tensile elasticity modulus (E), measured at 100.degree. C., higher than 1250 MPa and a ratio G'/G" of their modulus G', representing their elastic response, to their loss modu
5164267 Laminated composite November 17, 1992
Laminated composite consisting of a substrate sheet coated with a film (A) comprising at least one layer based on a polyamide resulting from the polycondensation of an aliphatic .alpha., .omega.-dicarboxylic acid with xylylenediamines.
5154909 Salt having a translucent and glassy appearance October 13, 1992
Process for the production of salt in which sodium chloride is crystallized in the form of spheres by evaporation of a sodium chloride brine and the spheres obtained are then broken up. The salt produced by the process is particularly suitable for the food industry.
5146013 Process for the production of chloroform from carbon tetrachloride, catalytic compositions and p September 8, 1992
The invention relates to a process for the production of chloroform from carbon tetrachloride using a catalytic composition comprising a support on which a hydrogenating metal is deposited, the support comprising an alkali metal aluminate or alkaline earth metal aluminate.The invention a
5145921 Process for reducing the formation of buildup in reactors during polymerization of vinylidene fl September 8, 1992
Polymerization of vinylidene fluoride in an aqueous suspending medium with the involvement of an oil-soluble radical polymerization initiator and in the presence of a suspending agent consisting of a methyl hydroxyethyl cellulose. The use of methyl hydroxyethyl cellulose ensures a substa
5141913 Process for the pretreatment of activated carbon with ferric chloride August 25, 1992
The present invention relates to a process for the pretreatment of activated carbon, capable of being employed especially for the purification of concentrated solutions of hydrochloric acid.
5141618 Frame unit for an electrolyser of the filter press type and electrolysers of the filter-press ty August 25, 1992
Frame unit for an electrolyser of the filter-press type, comprising a vertical metal sheeting (1), a peripheral frame made up of two vertical uprights (2, 3) and of two horizontal lengthwise members (4, 5) and a metal sheet (6) covering the sheeting (1) and the two uprights (2, 3), the
5140059 Compatibilized compositions comprising a polyamide and polypropylene August 18, 1992
Compatibilized compositions comprising at least one polyamide and at least propylene polymer which is at least partially modified by a polar monomer, in which compositions the propylene polymer has a melt flow index (MFI) measured according to ASTM standard D 1238-86 (230/2.16 conditions
5135734 Process for removing a residue containing sodium sulphate August 4, 1992
Process for removing an industrial residue containing sodium sulphate, in which the sodium sulphate in the residue 7 is treated with a calcium salt 12 to precipitate calcium sulphate 13, which is sent to a rock salt deposit 15, from which an aqueous solution of sodium chloride 16 is
5135610 Baths and process for chemical polishing of stainless steel surfaces August 4, 1992
Baths for the chemical polishing of stainless steel surfaces containing, in aqueous solution, a mixture of hydrochloric acid, phosphoric acid, nitric acid and of sulphosal cylic acid and at least one abietic compound.
5132049 Substituted thiophenes, conducting polymers derived from these thiophenes, process for obtaining July 21, 1992
Substituted thiophenes of the general formula: ##STR1## in which: R represents a hydrogen atom, a halogen atom or an aliphatic group containing from 1 to 4 carbon atoms,X represents a hydrogen atom or a fluorine atom,Y represents an at least partially fluorinated aliphatic or aromatic gr
5124409 Process for rendering mixtures comprising at least one vinyl chloride-based resin and at least o June 23, 1992
A mixture is produced, comprising from 50 to 95% by weight of at least one vinyl chloride-based resin, from 1 to 20% by weight of at least one olefin-based resin, from 1 to 20% by weight of a copolymer of ethylene and vinyl acetate which has a vinyl acetate content of between 10 and 35%
5123603 Multi-width winder June 23, 1992
The winder comprises a central driving carrier tube (1) and winding drums (2) equipped with self-blocking systems (3) for receiving reeling mandrils (4) arranged successively round the central driving carrier tube, the said drums (2) each being connected to this tube by means of a magnet
5112865 Pharmaceutical compositions containing a derivative of 3-hydroxybutanoic acid chosen from oligom May 12, 1992
The invention relates to a solution for dialysis containing a derivative of 3-hydroxybutanoic acid chosen from oligomers of this acid and esters of this acid or of these oligomers with 1,3-butanediol.
5107016 Process for the preparation of .beta.-hydroxybutyric acid esters April 21, 1992
Process for the preparation of .beta.-hydroxybutyric acid esters, comprising:1) a step involving alcoholysis of the polyhydroxybutyrate in the presence of an alcohol, a halogenated solvent, and an acid,2) a neutralization step comprising the addition of an alcoholate in solution in the a
5098517 Baths and process for chemical polishing of copper or copper alloy surfaces March 24, 1992
Baths for chemical polishing of copper or copper alloy surfaces, comprising, in aqueous solution, hydrogen peroxide, phosphoric acid and tetraborate ions.
5096782 Structures with multiple polymeric layers comprising a vinylidene fluoride polymer layer bonded March 17, 1992
Structures with multiple polymeric layers comprising a vinylidene fluoride polymer layer bonded to a polar polymer layer by the use of a polymeric adhesive comprising a vinyl acetate polymer. These structures are characterized in that the product of the weight content of vinyl acetate
5095081 Process for the manufacture of vinylidene fluoride polymers and use of vinylidene fluoride polym March 10, 1992
Process for the manufacture of vinylidene fluoride polymers by noncontinuous polymerization of vinylidene fluoride in an aqueous medium with the use of peroxydisulphates as initiators and in the absence of emulsifying agent, in which an alkyl acetate, employed as a chain-control agen
5093300 Method for activating a chromium-containing catalyst supported on a silica-containing base March 3, 1992
A method for activating supported chromium oxide catalysts in which a chromium-containing catalyst on a silica-containing base is first heated in an oxidizing atmosphere at temperatures up to about 850.degree. C. and then cooled down. During the cooling step of the catalyst, the oxidizin
5089454 Catalytic composition for hydrogenation of chlorofluoroalkenes February 18, 1992
The invention relates to catalytic compositions for the hydrogenation of chlorofluoroalkenes to fluoroalkenes, comprising a porous carrier impregnated with metal of group VIII of the Periodic Table of the elements and with one or more compounds chosen from the salts of an alkali metal or
5085569 Device for recovering, by melting, the metal constituting a fusible core February 4, 1992
The device which is used for recovering a fusible core employed for moulding a hollow plastic article includes a bath of a liquid heated to a temperature at least equal to the melting temperature of the metal constituting the fusible core, a handling mechanism for introducing and hol
5069884 Process for the purification of an aqueous alkali metal chloride solution from ammonium and iodi December 3, 1991
Process for the purification of an aqueous alkali metal chloride solution from iodine compounds and ammonium compounds, in which the operation is carried out in two successive stages comprising a first stage in which the iodine compounds are oxidized to molecular iodine which is removed
5068474 Process for the purification of vinyl chloride November 26, 1991
Process for the removal from vinyl chloride of compounds of ester type by an operation of treatment comprising an alkaline washing and a treatment with a hydride.
5066706 Process for preparing a latex based on polypyrrole and use of this latex to form a conducting fi November 19, 1991
Process for preparing a latex of polypyrrole in an aqueous reagent medium containing a ferric salt, a hydrolyzed polyvinyl acetate and a dodecyl sulphate.The films prepared with this conducting latex are homogeneous, adhere to metals and metallized glasses and have high conductivity.
5059730 Process for the purification of vinyl chloride October 22, 1991
Process for the removal from vinyl chloride of compounds of the ester type by an operation of treatment comprising an alkaline washing and a treatment with a bisulphite.
5053377 Catalytic compositions, process for obtaining them and process for hydrogenation of 1,1,2-trichl October 1, 1991
The invention relates to catalytic compositions for the hydrogenation of 1,1,2-trichloro-1,2,2-trifluoroethane to chlorotrifluoroethylene and trifluoroethylene comprising a porous oxygenated support impregnated with a metal of group VIII of the periodic table of the elements and one or
5045598 Slit film yarn based on propylene polymer and its use for the manufacture of synthetic lawn September 3, 1991
Slit film yarn based on propylene polymer, resistant to postfibrillation. The propylene polymer is a block copolymer of propylene and ethylene made up of chain segments consisting of propylene homopolymer and of chain segments consisting of random copolymer of propylene and ethylene.This
5043496 Process for the treatment of heavy chlorination residues August 27, 1991
The present invention relates to a process for the treatment of heavy residues produced in the manufacture of chlorinated products, in which process a chemical compound chosen from certain fatty compounds is added to the heavy residues in order to form fluid and stable liquid suspens
5034484 Catalytic solid for use in the polymerization of alpha-olefines, process for preparing it and pr July 23, 1991
The invention concerns:a catalytic solid containing magnesium, a halogen, titanium and silicon, this catalytic solid also containing aluminium and being microporous;a process for preparing this catalytic solid;use of this catalytic solid for polymerizing alpha-olefines.
5032375 Process for the manufacture of barium titanate and/or strontium titanate crystals July 16, 1991
An amorphous powder of titanium oxide and of barium and/or strontium oxide is precipitated by the hydrolysis of titanium alcoholate in the presence of barium oxide, hydroxide or alcoholate or strontium oxide, hydroxide or alcoholate and an acid organic compound containing more than 6 car
5028476 Coextruded rigid thermoplastic structures enabling biaxially oriented materials to be obtained July 2, 1991
Biaxially oriented rigid thermoplastic structures with multiple coextruded polymeric layers comprising a layer of vinyl chloride polymer and a coating layer of polymethyl methacrylate containing products absorbing ultraviolet radiation. The content of products absorbing ultraviolet r
5008474 Process for the manufacture of 1-chloro-1,1-difluoroethane April 16, 1991
1-Chloro-1,1-difluoroethane is prepared by reacting hydrogen fluoride with vinylidene chloride, in a liquid medium containing preferably at least 40 mol % 1,1-dichloro-1-fluoroethane.
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