Patents Represented by Attorney Ralph M. Watson
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Patent number: 4431621Abstract: An improved process is disclosed for producing alumino-silicates having a porous structure, of the zeolite class, the process essentially comprising the step of preparing a homogeneous aqueous mixture containing a source of alumina, a source of silica and alkali metal bases and/or alkaline earth metal bases, the improvement consisting in adding to said mixture at least one substance which contains at least a hydroxyl group in its molecule. The advantages are that the use of nitrogenous organic substances, universally used heretofore for the preparation of certain zeolites, can be dispensed with inasmuch as the alkali metal ion is capable, alone, of displaying the counter-ion function.Type: GrantFiled: August 11, 1982Date of Patent: February 14, 1984Assignee: Snamprogetti S.p.A.Inventors: Marco Taramasso, Giovanni Perego, Bruno Notari
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Patent number: 4410501Abstract: This invention relates to a porous crystalline synthetic material constituted by silicon and titanium oxides, a method for synthesizing said material, and the use thereof as a catalyst.Said material is given the name titanium silicalite or TS-1, and corresponds to the following formula:xTiO.sub.2.(1-x)SiO.sub.2where x lies between 0.0005 and 0.04, preferably between 0.01 and 0.025.The material is prepared starting from a mixture constituted by a source of silicon oxide and a source of titanium oxide. The reaction takes place in the aqueous phase at a temperature of 130.degree. to 200.degree. C., and the solid product obtained is calcined in air at 550.degree. C.Type: GrantFiled: June 29, 1982Date of Patent: October 18, 1983Assignee: Snamprogetti S.p.A.Inventors: Marco Taramasso, Giovanni Perego, Bruno Notari
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Patent number: 4396783Abstract: A process for the hydroxylation of aromatic hydrocarbons by hydrogen peroxide, consisting in reacting said compounds in the presence of synthetic zeolites which contain heteroatoms, both replaced and exchanged.The reaction is carried out at a temperature comprised between 80.degree. C. and 120.degree. C. and in the presence of the hydrocarbon only or in the presence of a solvent which permits, at least partially, to admix the aromatic hydrocarbon with the hydrogen peroxide.Type: GrantFiled: September 4, 1981Date of Patent: August 2, 1983Assignee: Anic S.p.A.Inventors: Antonio Esposito, Marco Taramasso, Carlo Neri
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Patent number: 4134939Abstract: A distributor of liquid is disclosed, to be used in chemical apparatus having a bundle of tubes in the interior of which the liquid to be treated is distributed in the form of a thin film flowing on the internal surfaces of the tubes, the improvement consisting in the combination of a bell placed on the top surface of the tube plate and having liquid passageways formed along its bottom edge, a foraminous collar-like component placed at the bell top for feeding the liquid, and a plurality of distribution sleeves having the form of tubes through the sidewalls of which tangential bores are formed, there being one distribution sleeve for each tube of the bundle.Type: GrantFiled: September 20, 1976Date of Patent: January 16, 1979Assignee: Snamprogetti, S.p.A.Inventors: Umberto Zardi, Vincenzo Lagana'
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Patent number: 4120789Abstract: Bis-guanylhydrazonium and tris-guanylhydrazonium salts are disclosed, which are novel and very effective precipitants of anionic pollutants from sewage waters. Methods of preparation of such compounds and examples of their practical use are also reported.Type: GrantFiled: February 15, 1977Date of Patent: October 17, 1978Assignee: ANIC, S.p.A.Inventor: Raffaele Fusco
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Patent number: 4116783Abstract: A method for stripping pollutant metals from sewage waters from ore-treatment installations is disclosed, which comprises the step of using, in a short-circuited electrode system through which the waters to be purified are flowed, a compound of an element which is other than the cathode metal and is more electro-positive than the anode element. Striking results are obtained by treating vanadium-containing sewage waters from gallium-ore treatment plants with silver sulfate in a copper-iron electrode system. The method can be employed to recover other transition metals from liquors which contain them.Type: GrantFiled: January 10, 1977Date of Patent: September 26, 1978Assignee: Anic, S.p.A.Inventor: Gianni Generini
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Patent number: 4111749Abstract: A method is disclosed for converting racemic hydantoins into optically active aminoacids, wherein microorganisms of the Pseudomonas genus are used to hydrolyze the hydantoins into derivatives of D,L-aminoacids.Comparatively high temperatures and a definitely basic pH are favorable factors.Type: GrantFiled: July 9, 1976Date of Patent: September 5, 1978Assignee: Snamprogetti, S.p.A.Inventors: Ludwig Degen, Aurelio Viglia, Eugenio Fascetti, Elena Perricone
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Patent number: 4107417Abstract: A process is described whereby homopolymers and copolymers of isobutylene are prepared by effecting the polymerization at a temperature in the range of -100.degree. to 30.degree. C in the presence of a catalyst system including:(a) a compound selected from the group consisting of: AlCl.sub.3, AlBr.sub.3, AlEtCl.sub.2, TiCl.sub.4, SnCl.sub.4, SiCl.sub.4, VCl.sub.4, BF.sub.3, Al.sub.2 Et.sub.3 Cl.sub.3, SbCl.sub.5, SbF.sub.5, FeCl.sub.3, VOCl.sub.3, ZrCl.sub.4, AlI.sub.3, GaCl.sub.3 ; and(b) a compound adapted to react with the compounds of group (a) and selected from the group consisting of: SnR.sub.4, SnRX.sub.3, SrR.sub.4, TiX.sub.2 (OR).sub.2, Ti(OR).sub.4, PbR.sub.4, Ti(OR)X.sub.3, VO(OR).sub.3, Ti(OR).sub.3 X, (C.sub.5 H.sub.5).sub.2 Ti(C.sub.6 H.sub.5).sub.2, (C.sub.5 H.sub.5).sub.2 Ti(CH.sub.3).sub.2, Ti(Acac).sub.4, SnCl.sub.2 (acetate).sub.2 in which R is a hydrocarbon radical with from 1 to 10 carbon atoms and X is a halogen atom.Type: GrantFiled: September 6, 1974Date of Patent: August 15, 1978Assignee: Snamprogetti, S.p.A.Inventors: Aldo Priola, Sebastiano Cesca, Giuseppe Ferraris
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Patent number: 4100351Abstract: In the preparation of aromatic urethans, a dialkyl carbonate is reacted with an N-acyl derivative of an amine: thus, for example, by reacting acetanilide with a lower dialkyl carbonate, such as DMC or DEC, in the presence of titanium tetraphenate (Lewis' acid), phenylmethyl urethan is obtained with a yield over 90%. No toxic reactants are used and the reaction has outstandingly high yields and conversion ratings. The urethane in question are useful as weed-killers and pesticides in agriculture.Type: GrantFiled: March 24, 1977Date of Patent: July 11, 1978Assignee: Anic, S.p.A.Inventors: Ugo Romano, Renato Tesei
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Patent number: 4097250Abstract: A method is disclosed for removing acidic gaseous components from natural gases, this method comprising an initial desulfurization stage employing a selective solvent, then removing carbon dioxide by low temperature distillation, the carbon dioxide providing the cooling effect required for such a condensation, recovering the solvent, absorbing the residual carbon dioxide with the regenerated solvent and recycling the CO.sub.2 -laden solvent to the desulfurization stage.Type: GrantFiled: March 4, 1977Date of Patent: June 27, 1978Assignee: Snamprogetti, S.p.A.Inventors: Giorgio Pagani, Gianfranco Guerreri, Bruno Peri
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Patent number: 4082685Abstract: Aluminum chlorohydroxide represented by the formula Al.sub.2 (OH).sub.x Cl.sub.y in which x and y range from 1 to 4 and 5 to 2, respectively, is produced by reacting hydrochloric acid with an amount of aluminum oxide or hydroxide which is equal to or slightly greater than the stoichiometric amount for obtaining aluminum trichloride, in the temperature range of from 160.degree. to 270.degree. C, and in the pressure range of from 0.1 to 50 kg/cm.sup.2.Type: GrantFiled: March 27, 1975Date of Patent: April 4, 1978Assignee: Snamprogetti, S.p.A.Inventors: Bruno Notari, Luigi Rivola
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Patent number: 4072739Abstract: The invention relates to the purification of homo- and copolymers of mono- and diolefines, as obtained from a solution polymerization in the presence of uranium catalysts, from the catalyst residues, and particularly to a process for the removal of the uranium from the hydrocarbon solution of the polymer, which solution is mixed with an aqueous solution of ammonium carbonate, the thus resulting aqueous phase being then separately treated for the recovery of the ammonium carbonate and of the uranium.Type: GrantFiled: August 1, 1975Date of Patent: February 7, 1978Assignee: Snamprogetti, S.p.A.Inventors: Alessandro Beranger, Agostino Balducci, Silvano Gordini
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Patent number: 4070324Abstract: A diene based synthetic rubber latex, whose particle diameter is in the range between 1500 and 4000A, is prepared through an emulsion polymerization process wherein there is fed to a stirred autoclave system, the following ingredients:A. 100 parts of monomer consisting of a conjugated diene or a mixture having at least 80% constituted by one or more conjugated dienes and the balance selected from another monomer or monomers;B. From about 60 to 300 parts of a aqueous solution of organic emulsifying agent; andC. From 0.01 to 2 parts of polymerization promoter.The temperature in the autoclave system is maintained in the range between 70.degree. and 140.degree. C during the polymerization and product is collected at a rate such that residence time in the autoclave system is between 2 and 30 hours.Type: GrantFiled: November 3, 1975Date of Patent: January 24, 1978Assignee: Anic, S.p.A.Inventors: Ferruccio Fronzoni, Carlo Giampaolo
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Patent number: 4064153Abstract: An oligomer N-alkyl-iminoalane, made up of a plurality of four and/or six member rings of the formulae: ##STR1## wherein R is an aliphatic, cycloaliphatic or aromatic hydrocarbon combined in a tridimensional cage structure having the chemical composition (HAl-NR).sub.n, in which R has the above meaning and n is a whole number lower than or equal to 10, is prepared by reacting a primary amine containing a secondary or tertiary carbon atom in alpha or beta position with respect to the amine nitrogen atom or amide derivative thereof wherein the amine radical contains a secondary or tertiary carbon atom in alpha or beta position with respect to the nitrogen atom with a complex formed by AlH.sub.3 and a Lewis base, or by reacting said primary amine with an alkali or alkaline-earth metal alanate.Type: GrantFiled: July 1, 1975Date of Patent: December 20, 1977Assignee: Snam Progetti S.p.A.Inventors: Salvatore Cucinella, Marco Cesari, Tito Salvatori
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Patent number: 4063021Abstract: A method for the preparation of a group of variously substituted ureas is disclosed, these compounds being obtained by the pyrolytic decomposition of the alkali metal or alkaline earth metal carbamates corresponding to the expected ureas, the reaction taking place at a temperature of between 150.degree. and 400.degree. C under atmospherical pressures, and preferably under subatmospherical pressures, under which conditions the expected urea either sublimes or is distilled.Type: GrantFiled: December 10, 1975Date of Patent: December 13, 1977Assignee: ANIC, S.p.A.Inventors: Gioacchino Cipriani, Carlo Neri
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Patent number: 4062865Abstract: A process for the preparation of substituted indolenines of the formula: ##STR1## wherein R is hydrogen, alkyl, aryl or cycloalkyl, halogen, or a functional group selected from among cyano, hydroxyl, alkoxy, nitro or sulphonic groups, and wherein R.sub.1, R.sub.2 and R.sub.3 are the same, or different, and are selected from alkyl, aryl or cycloalkyl radicals, comprising reacting in the presence of an organic solvent an aromatic amine of the formula: ##STR2## with a tertiary hydroxyketone of the formula: ##STR3## wherein R, R.sub.1, R.sub.2 and R.sub.3 have the same meanings as defined above, in the presence of a catalyst selected from mineral acids, organic acids, Lewis acids or ionic exchange resins in acid form, and wherein said aromatic amine is slightly in excess, to form first an imine of the formula: ##STR4## under reaction conditions wherein the solvent is removed by azeotropic distillation, and thereafter continuing the reaction to remove water and cyclizing to the desired indolenines.Type: GrantFiled: April 4, 1975Date of Patent: December 13, 1977Assignee: Snamprogetti S.p.A.Inventor: Pietro Antonio Moggi
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Patent number: 4045464Abstract: The invention relates to a process for preparing diaryl carbonates starting from phenyl alkyl carbonates, the reaction being carried out in the presence of suitable catalysts capable of affording greater yields and selectivity; the catalyst system is selected amongst the Lewis acids or the compounds of transition metals.Type: GrantFiled: December 1, 1975Date of Patent: August 30, 1977Assignee: Anic, S.p.A.Inventors: Ugo Romano, Renato Tesei
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Patent number: 4042609Abstract: A compound having catalytic properties which is a .sigma. or .pi. organic complex of a transition metal represented by the general formula: M (A).sub.n (L-C) (L).sub.m, wherein M is Ir or Re; L is a member of the group consisting of alkyl and aryl phosphines; (L-C) is (a) an alkyl or aryl phosphine ligand wherein a C-H bond is reacted with the central M atom to which the ligand is coordinated, and a metal-carbon bond is formed, or (b) a .pi.-allyl radical; A is a linear monoolefin having from 2 to 5 carbon atoms or a cyclic monoolefin having from 6 to 8 carbon atoms; n is a number in the range of 0 to 2 and is always zero when L-C is a .pi.-allyl radical; and m is a number from 1 to 3 which satisfies the valence of M, is prepared by reacting a hydride complex represented by the general formula: MHLn.sub.1 wherein M and L have the meaning given above, x is in the range from 5 to 7 and n.sub.Type: GrantFiled: February 2, 1976Date of Patent: August 16, 1977Assignee: Snam Progetti S.p.A.Inventors: Emilio Perrotti, Mario Clerici
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Patent number: 4042271Abstract: A device for automatically grasping fabric pieces, more particularly a single fabric piece at a time, comprising a set of tapered and bent points parallely mounted near to the lower vertex of a triangle shaped oscillating member; the latter is pivotably mounted to the head of a movable body, and the said member oscillates between two end positions, a resilient inverted U shaped element being provided to maintain said member in either end position, the resilient element being supported also by the movable body, whereby a single piece of fabrics is grasped at each oscillation of the said member by the points penetrating it.Type: GrantFiled: March 19, 1976Date of Patent: August 16, 1977Assignee: Nuovo Pignone, S.p.A.Inventor: Costantino Vinciguerra
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Process for the enzymatic determination of glucose with a glucose-oxydazed/peroxidazed enzyme system
Patent number: RE29498Abstract: Process for enzymatic determination of glucose with a glucose-oxidase-peroxidase enzyme system involving the use of a reduced acceptor which is oxidized. As reduced acceptor in the enzymatic reaction catalyzed by peroxidase, a ferrocyanide salt is oxidized to ferricyanide; then a further reducing system is introduced, which system is oxidized by the ferricyanide, with the formation of a colored quinone compound, the reaction between ferricyanide and the reducing system taking place spontaneously.Type: GrantFiled: March 2, 1976Date of Patent: December 20, 1977Assignee: Istituto Sieroterapico e Vaccinogeno Toscano "SCLAVO", S.p.A.Inventor: Franco Meiattini