Patents Assigned to Rhone-Progil
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Patent number: 4022812Abstract: A fire resistive primary plasticizer having 15-70% chlorine, 1-8% sulphur, with the remainder formed principally of carbon, hydrogen and oxygen prepared by the reaction of a substantially straight chain paraffin by the reactions of sulphochlorination, chlorination and condensation with one or more phenolic compounds.Type: GrantFiled: June 20, 1974Date of Patent: May 10, 1977Assignee: Rhone-ProgilInventors: Jean-Pierre Regeaud, Emile Trebillon, Georges Wetroff
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Patent number: 4018880Abstract: The invention concerns a method of purifying hydrogen chloride gas containing small quantities of chlorine. The purifying method comprises passing impure hydrogen chloride over carbon, at a temperature from 30.degree. to 200.degree. C, in the presence of at least one olefin, possibly containing chlorine. The method of the invention applies particularly to the hydrogen chloride obtained from a chloroethane cracking operation initiated by chlorine.Type: GrantFiled: November 25, 1974Date of Patent: April 19, 1977Assignee: Rhone-ProgilInventors: Yves Correia, Jean Lesparre
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Patent number: 4010307Abstract: A paper or cardboard coating composition comprising an aqueous dispersion containing binder and pigment in which 5-30 percent by weight of the pigment are particles dimensioned within the range of 0.05-0.3 microns of a non-film forming synthetic polymer and in which 70-95 percent by weight of the pigment is calcium carbonate.Type: GrantFiled: November 13, 1974Date of Patent: March 1, 1977Assignee: Rhone-ProgilInventors: Pierre Canard, Albert Levy
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Patent number: 3996273Abstract: The manufacture of phosgene from carbon monoxide and chlorine obtained by oxidation of hydrochloric acid gas in which the chlorine is fixed in the form of a copper chloride on an exchange mass formed of a granular support of silica gel having a specific surface of 10 m.sup.2 /g and a porous volume within the range of 0.3 to 1 cc/gram with the chlorides of potassium and copper being on the carrier with the possible addition of a chloride of rare earth metals.Type: GrantFiled: February 9, 1976Date of Patent: December 7, 1976Assignee: Rhone-ProgilInventor: Jean-Calude Daumas
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Patent number: 3994833Abstract: The object of the invention is a catalyst for oxidizing organic compounds. The catalyst is characterized by the fact that the active material consists of molybdenum oxide deposited on anatase type titanium dioxide. The catalyst can be used for the oxidation of organic compounds in order to obtain maleic anhydride.Type: GrantFiled: November 21, 1974Date of Patent: November 30, 1976Assignee: Rhone-ProgilInventors: Marcel Jouy, Francis Van Den Bussche
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Patent number: 3993734Abstract: A process for the manufacture of alkali metal polyphosphates having a predetermined crystalline form, in which a mixture of alkali metal orthophosphates having a molar ratio of alkali metal oxide to phosphoric anhydride between 1 and 2 is first granulated, the resulting granules are dried and then are subjected to thermal treatment in the presence of aqueous vapor.Type: GrantFiled: June 30, 1975Date of Patent: November 23, 1976Assignee: Rhone-ProgilInventors: Jean-Michel Verdier, Jacques Becuwe, Jacques Chastel
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Patent number: 3987103Abstract: A process for the production of isopropanol and acetone in which isbutyraldehyde and an oxygenated salt of a metal of Groups I.sub.B, II.sub.B, III.sub.A, IV.sub.A, V.sub.A, VI.sub.A, VII.sub.A or VIII.Type: GrantFiled: July 30, 1973Date of Patent: October 19, 1976Assignee: Rhone-ProgilInventors: Georges Gobron, Claude Falize, Henri Dufour
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Patent number: 3984349Abstract: Bodies formed of porous, divided or colloidal inorganic material containing surface hydroxyl groups which are modified by grafting to the surface an organic group to establish an --O--Si bond, wherein the organic group has an average molecular weight greater than 150 and contains at least one hydrophilic functional group. The bodies of this invention are well suited for use in chromatography.Type: GrantFiled: August 22, 1974Date of Patent: October 5, 1976Assignee: Societe Rhone-ProgilInventors: Francois Meiller, Claude Bonnebat, Michel Deleuil
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Patent number: 3980613Abstract: A uniform, porous, homogeneous diaphragm for use in electrolysis cells is provided by bringing together a homogeneous, stable suspension of asbestos fibers in water and a fluorinated polymeric resin latex with a pore-forming agent in the presence of a sulfonated anionic surfactant, the resulting suspension being shaped to the desired form of the diaphragm by filtration, the desired shape of the diaphragm then being dried and sintered at a temperature above the crystalline melting point of the fluorinated polymeric resin, the pore-forming agent finally being removed from the resulting diaphragm by decomposition or extraction.Type: GrantFiled: May 14, 1974Date of Patent: September 14, 1976Assignee: Rhone-ProgilInventors: Jean Bachot, Pierre Bouy, Michel Juillard
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Patent number: 3980545Abstract: Bipolar electrodes are provided for electrolysis cells of the filter-press type with incorporated cathode and/or anode frames. These frames are integrated in the bimetallic base plate of the electrode serving as reference plane, perpendicularity with respect to said plane being assured with respect to the cathode and anode portions by the current leads to which they are welded, these current leads serving as stiffeners and resulting in the planarity of these electrode portions and their parallelism with respect to the reference plane formed by the bimetallic base plate.These electrodes are highly efficient in the electrolysis of alkaline chlorides.Type: GrantFiled: June 12, 1974Date of Patent: September 14, 1976Assignee: Rhone-ProgilInventors: Hubert de Lachaux, Pierre Bouy, Michel Conan
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Patent number: 3979502Abstract: A method of eliminating chloroacetylenes present in small quantities in hydrogen chloride gas. The method comprises passing hydrogen chloride contaminated with chloroacetylenes over active carbon at a temperature from 50.degree. to 250.degree.C. The method of the invention can plainly be applied to the treatment of hydrogen chloride discharged from works where monochloroacetic acid is prepared, prior to compression of the hydrogen chloride.Type: GrantFiled: November 25, 1974Date of Patent: September 7, 1976Assignee: Rhone-ProgilInventors: Yves Correia, Francois Muller
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Patent number: 3978004Abstract: Catalysts for Claus reaction treatment of industrial gases containing hydrogen sulphide and sulphur dioxide in which the catalyst has a specific surface area of at least 80 sq.m./g and is composed of activated alumina and a compound of lanthanum, a lanthanide series metal of atomic number 58 to 71 or a metal of Group IIIB of the periodic classification of elements which is present, when calculated as the oxide, in an amount within the range of 1-20% by weight of the catalyst.Type: GrantFiled: August 1, 1974Date of Patent: August 31, 1976Assignee: Rhone-ProgilInventors: Jean-Claude Daumas, Georges Dupuy, Max Michel
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Patent number: 3978262Abstract: Water soluble sulfonated polyesters, made by polycondensation of an aromatic diacid or its anhydride or diester, an unsaturated aliphatic diacid or its anhydride or diester and a saturated glycol and sulfonating, are applied to textile fibers in sufficient amounts to act as sizing agents.Type: GrantFiled: December 26, 1974Date of Patent: August 31, 1976Assignee: Rhone-ProgilInventors: Jacques Fritz, Paul Roux, Jean Neel
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Patent number: 3975131Abstract: An expansible mold for the fabrication of plaster parts having reliefs in the side walls comprising at least two walls and non-compressible deformable parts between two parallel side edges of the walls in which, under pressure, the deformable parts acquire the profile to be imparted to the molded plaster part, and which retract from the molded plaster part upon release of pressure to enable removal of the molded part without loss of a tight sealing relation with the mold.Type: GrantFiled: January 30, 1975Date of Patent: August 17, 1976Assignee: Societe Rhone-Progil S.A.Inventor: Rene Bergounhon
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Patent number: 3974227Abstract: A catalyst for hydrogenation, hydroformylation, olefin oxidation and similar reactions is prepared by treating activated carbon first with a volatile acid and then with a basic substance to provide a suitable support for the catalyst, and then adsorbing onto such support a coordination complex of a transition metal. The adsorption of the catalyst onto the support may be effected in situ during the hydrogenation, hydroformylation, oxidation, etc. reaction.Type: GrantFiled: March 20, 1975Date of Patent: August 10, 1976Assignee: Rhone-ProgilInventors: Jean Berthoux, Jacques-Pierre Martinaud
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Patent number: 3969424Abstract: A catalyst support composed of silica and magnesia prepared by calcining particles of a silica hydrogel containing magnesium cations and an anion containing chlorine and/or bromine. The supports of this invention can be impregnated with catalytically active components to produce catalysts suitable for use in the non-selective oxychlorination of lower aliphatic hydrocarbons such as ethylene.Type: GrantFiled: September 3, 1974Date of Patent: July 13, 1976Assignee: Rhone-ProgilInventors: Jean-Claude Daumas, Madeleine Le Page
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Patent number: 3969261Abstract: An ion exchange substance formed of a porous mineral support having a specific surface area greater than 10 sq.m/g and an organo silicon compound containing at least one amine group in an organic group attached to the silicon atom grafted onto the porous mineral support via the silicon atom of the organo silicon compound and an oxygen group on the support and in which the terminal radicals on the amino group are alkyl groups having from 1 to 3 carbon atoms.Type: GrantFiled: July 10, 1974Date of Patent: July 13, 1976Assignee: Rhone-ProgilInventor: Francois Meiller
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Patent number: 3968179Abstract: A process for the continuous chlorination of ethylene in the liquid phase in the absence of light and in the presence of 1,2-dichloroethane and dissolved ferric chloride wherein the reaction is carried out in a homogeneous reaction zone in which the reaction medium contains dissolved chlorine in an amount within the range of 1 to 20 g per kg of liquid reaction mixture and in which the ratio R between the molar hourly flow rate of ethylene introduced to the homogeneous reaction zone and the molar hourly flow rate of ethylene which saturates the 1,2-dichloroethane contained in the reaction zone is within the range of 0 to 140.Type: GrantFiled: December 21, 1973Date of Patent: July 6, 1976Assignee: Rhone-ProgilInventors: Jean-Claude Strini, Jean-Raymond Costes
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Patent number: 3965158Abstract: Process for the selective ortho substitution of a halobenzene sulfonic acid compound with a hydroxyl group or a group convertible to same to prepare the corresponding halophenol sulfonic acid compound which process comprises reacting a halobenzene sulfonic acid compound having at least two halogen atoms at least one of which is ortho to the sulfonic group with an alkali metal hydroxide or other hydroxy containing compound which is capable of replacing a nuclear halogen atom with a hydroxyl group, said reaction being conducted in the presence of a liquid organic reaction medium which is responsible for the orientation of the hydroxyl substitution in the ortho position. The halophenol sulfonates thus prepared optionally may be desulfonated to obtain the ortho hydroxy halobenzene compound.Type: GrantFiled: December 27, 1973Date of Patent: June 22, 1976Assignee: Rhone-ProgilInventors: Gerard Soula, Jacques Metzger, Louis Lena
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Patent number: 3962138Abstract: The invention concerns catalytic substances for the oxidation of ammonia, for the production of nitric acid, comprising cobalt oxide as the main component. Such substances, besides cobalt oxide, also contain additives formed of aluminum oxide and possibly oxides of thorium, cerium, zinc and cadmium, the amount of aluminum oxide added being from 5% to 15% by weight of the finished substances and the amount of the other oxides being from 0 to 25% by weight of the finished substances; these substances are in particular shaped by pelleting or extrusion, dried and then calcined at temperatures of the order of from 900.degree. to 1000.degree.C. The advantages of these catalytic substances lie in a high degree of activity and a high level of strength, which are maintained during use thereof.Type: GrantFiled: March 18, 1974Date of Patent: June 8, 1976Assignee: Rhone-ProgilInventors: Jean-Louis Ray, Robert Laugier