Patents Assigned to Texaco Chemical Company
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Patent number: 5340889Abstract: Liquid hydroxyurethane products having cyclocarbonate end groups are prepared by reacting a molar excess of a bis-carbonate of a bis-glycidyl ether of neopentyl glycol or 1,4-cyclohexanedimethanol with a polyoxyalkylenediamine such as a polyoxypropylenediamine. These products are useful for the preparation of polyurethanes, polyurethane polyols, polyester polyurethane polyols, and polycarbonate polyurethane polyols.Type: GrantFiled: July 19, 1993Date of Patent: August 23, 1994Assignee: Texaco Chemical CompanyInventors: Wheeler C. Crawford, Edward T. Marquis, Howard P. Klein
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Patent number: 5338890Abstract: Disclosed is a method wherein t-butanol is reacted with methanol in one step to provide methyl t-butyl ether at a temperature of about 20.degree. C. to 250.degree. C. and a pressure of about atmospheric to about 1000 psig employing a heterogenous catalyst comprising a Group IV oxide having an alkylsulfonic acid covalently bonded thereto, particularly alkylsulfonic acid covalently bonded to silica gel and having the structure: ##STR1## wherein R is an alkyl group having from 1 to 3 carbon atoms and n is an integer in the range of 3 to 10.Type: GrantFiled: July 19, 1993Date of Patent: August 16, 1994Assignee: Texaco Chemical CompanyInventors: John F. Knifton, John R. Sanderson
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Patent number: 5336315Abstract: This invention is concerned with a soil stabilization process in which soil particles comprising the soil surfaces to be stabilized are contacted or treated with an aqueous solution of an alkali metal silicate, such as sodium silicate, and a carbonate reactant or gelling agent selected from the group consisting of an alkylene carbonate, such as ethylene carbonate, a polyester polycarbonate and mixtures thereof. This invention also relates to soil stabilized by admixture with (1) an aqueous solution of an alkali metal silicate and (2) the carbonate reactant.Type: GrantFiled: February 25, 1993Date of Patent: August 9, 1994Assignee: Texaco Chemical CompanyInventors: Michael Cuscurida, Edward T. Marquis, Wheeler C. Crawford
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Patent number: 5336790Abstract: A process for recovery of molybdenum from residual fractions derived from an epoxidation reaction of propylene with tertiary butyl hydroperoxide in liquid phase with tertiary butyl alcohol, in the presence of soluble molybdenum, which process comprises:Fractionating epoxidation reaction product for obtaining a liquid fraction containing essentially all molybdenum from the reaction product;Contacting the liquid fraction with anhydrous ammonia for forming a precipitate containing the major portion of the molybdenum and a liquid phase containing 500 ppm or less molybdenum;Separating the liquid phase from the precipitated solid;Evaporating the liquid phase under conditions of elevated temperatures and reduced pressure in the presence of 1 to 3% water for separation into an evaporator overhead vapor essentially free of molybdenum and an evaporator concentrate comprising essentially all of the molybdenum fed to the evaporator;Rapidly cooling evaporator concentrate from about evaporation temperature to about room teType: GrantFiled: November 18, 1993Date of Patent: August 9, 1994Assignee: Texaco Chemical CompanyInventors: Edward T. Marquis, Howard F. Payton, Robert A. Meyer
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Patent number: 5324838Abstract: Bicyclo[4.3.0]1,4,7-triazanony-6-ene-5-one may be made easily, in good yield and in one step by reacting diethyl oxalate with a diethylene triamine. The bicyclo[4.3.0]1,4,7-triazanon-6-ene-5-one material made by this process may be used to selectively separate metal ions from solution, or complexed together with a metal ion act as a catalyst. Surprisingly, related bicyclic triazines do not show the ability to complex with metal ions and precipitate them from solution.Type: GrantFiled: November 23, 1992Date of Patent: June 28, 1994Assignee: Texaco Chemical CompanyInventors: George P. Speranza, Martin J. Plishka
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Patent number: 5324812Abstract: Water soluble polyamides may be produced by reacting two different dicarboxylic acids with at least one low molecular weight poly(alkylene glycol) diamine and at least one relatively high molecular weight polyoxyalkylene diamine. One dicarboxylic acid may be of low molecular weight, such as adipic acid and the other of relatively high molecular weight such as C.sub.36 dimer acid. In one embodiment, some dimer acid proportion is preferred. The poly(alkylene glycol) diamine may include triethylene glycol diamine and tetraethylene glycol diamine. The polyoxyalkylene diamine should have at least some ethylene oxide residue therein; for example it may be a polyoxyethylene/polyoxypropylene diamine. The resulting polyamides have a desirable combination of properties, including high strength with water solubility, the latter making the materials easier to work with and very useful.Type: GrantFiled: April 1, 1993Date of Patent: June 28, 1994Assignee: Texaco Chemical CompanyInventors: George P. Speranza, Christopher S. Henkee
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Patent number: 5313006Abstract: Disclosed is an improvement in a method for cogeneration of isobutylene and MTBE by etherification of tBA/MeOH over an ion-exchange resin which allows for more complete conversion of the remaining tBA fraction and comprises a second step consisting essentially of recovering the MTBE from the primary fractionator as an overhead fraction and etherifying the bottoms from the primary fractionator over an inorganic acid catalyst comprising a crystalline aluminosilicate faujasite-type Y-zeolite modified with a compound selected from a fluoride-containing compound including hydrofluoric acid, ammonium fluoride, fluorosulfonic acids and their cogeners and triflic anhydride at a temperature of greater than 120.degree. C.Type: GrantFiled: December 21, 1992Date of Patent: May 17, 1994Assignee: Texaco Chemical CompanyInventor: John F. Knifton
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Patent number: 5308882Abstract: This invention is a molded flexible polyurethane foam containing acid-modified polyoxypropyleneamine comprising a polyol, a polyisocyanate, water, and a crosslinker/catalyst of the formulae: ##STR1## where R' is an alkylene radical having from about 2 to 4 carbon atoms, R" is H or OH and R is H or from about 1 to 6 carbon atoms wherein said compound is present in an amount ranging from about 0.05 to 2.00 weight percent based on the combined weight of the polyol and polyisocyanate and wherein the sole blowing agent is CO.sub.2 resulting from the reaction of the water and the isocyanate or wherein auxiliary blowing agents may also be included and are selected from the group consisting of halogenated low-boiling hydrocarbons (e.g. trichloromono-fluoromethane and dichloromethane), carbon dioxide, and nitrogen or mixtures thereof.Type: GrantFiled: September 7, 1993Date of Patent: May 3, 1994Assignee: Texaco Chemical CompanyInventor: Debra A. Washington
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Patent number: 5304681Abstract: Disclosed is a method for preparation of alkylamines which comprises reacting ammonia and a monounsaturated olefin in the presence of a catalyst selected from the group consisting of:a. Acid modified montmorillonite clays;b. Heterogeneous catalysts comprising a fluorine-containing compound on an inert support; andc. Heteropoly acids on an inert support.Type: GrantFiled: November 22, 1991Date of Patent: April 19, 1994Assignee: Texaco Chemical CompanyInventors: John F. Knifton, Neal J. Grice
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Patent number: 5300703Abstract: Disclosed is a one step method for synthesis of alkylphenols which comprises reacting phenol with the corresponding olefin under adiabatic conditions in the presence of a catalyst comprising a heteropoly acid represented by the structure:H.sub.8-n [XM.sub.12 O.sub.40 ]where x=P or Si, M=Mo or w.sub.v and n is an integer which is 4 or 5, alone, or deposited on an inert support, at a temperature of from 60.degree. C. to 250.degree. C. and a pressure of from near atmospheric to about 500 psi.Type: GrantFiled: April 5, 1993Date of Patent: April 5, 1994Assignee: Texaco Chemical CompanyInventor: John F. Knifton
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Patent number: 5300697Abstract: A method is disclosed wherein t-butanol is reacted with methanol in a reaction zone in one step to provide methyl tert-butyl ether and the improvement of accomplishing the reaction which comprises:a. Using a catalyst consisting of a crystalline aluminosilicate faujasite Y-type zeolite which has been treated with hydrogen fluoride;b. continuously contacting said t-butanol and methanol in a molar amount of about 0.1 to 10 moles of methanol per mole of t-butanol with said catalyst at a temperature of about 20.degree. C. to about 250.degree. C. and a pressure of about atmospheric to about 1000 psig to obtain the methyl tert-butyl ether product wherein the product mix separates into an isobutylene-MTBE product-rich phase and a heavier aqueous methanol phase.Type: GrantFiled: December 7, 1992Date of Patent: April 5, 1994Assignee: Texaco Chemical CompanyInventors: John F. Knifton, John R. Sanderson
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Patent number: 5298081Abstract: A process for the dissolution of cured polyester resins is disclosed. A cured polyester resin may be dissolved, or removed from a substrate, by contacting the polyester resin with an alkylene carbonate, alone or as a co-solvent with one or more other solvents in which the cured polyester resin is at least partially soluble.Type: GrantFiled: November 19, 1990Date of Patent: March 29, 1994Assignee: Texaco Chemical CompanyInventor: Edward T. Marquis
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Patent number: 5298618Abstract: Macrocyclic oxamides may be made easily, in good yield and in one step by reacting an oxalic compound, such as oxalic acid or oxalic esters, with a diamine, where the amine groups are separated by at least five atoms. The oxalic compounds may include, but are not limited to such materials as dimethyl oxalate and diethyl oxalate. The diamines may include, but are not limited to such materials as alkylenediamines; polyalkylene glycol diamines; alkyl-bis-(aminoalkyl)amines; imino bis-(alkyl)amines; and N,N' bis-(aminoalkyl)-N,N'-dialkylalkylenediamines and bis-(aminoalkyl)piperazines; and mixtures thereof. The macrocyclic oxamides made by this process may be used to selectively separate metal ions from solution, or complexed together with a metal ion act as a catalyst.Type: GrantFiled: November 23, 1992Date of Patent: March 29, 1994Assignee: Texaco Chemical CompanyInventors: George P. Speranza, Donald H. Champion, Martin J. Plishka
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Patent number: 5293939Abstract: Disclosed are methods for treating wells to form a permeable barrier around the well for consolidating unconsolidated mineral particles such as sand in a subterranean petroleum formation penetrated by a well, or for forming an impermeable barrier for fluid entry control, or for plugging the well for abandonment. A fluid containing a polymerizable resin such as furfuryl alcohol oligomer or monomer, a polar organic diluent such as butyl acetate a dense solvent having density greater than the resin density, and an oil soluble acid catalyst to cause polymerization of the resin at formation temperatures is prepared. The dense solvent is bromobutane, bromobenzene, furfural, tetrachloroethane, tetrachloroethylene, tetrabromoethane, 1,2,4 trichlorobenzene and 1,2,3 tribromopropane or mixtures thereof. The amount of dense solvent is selected to ensure that the treating fluid density is greater than the density of the formation fluid, preferably at least 10 greater than the density of the formation fluid.Type: GrantFiled: July 31, 1992Date of Patent: March 15, 1994Assignee: Texaco Chemical CompanyInventors: Billy W. Surles, Philip D. Fader
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Patent number: 5290527Abstract: A process for recovery of molybdenum from residual fractions derived from an epoxidation reaction of propylene with tertiary butyl hydroperoxide in liquid phase with tertiary butyl alcohol, in the presence of soluble molybdenum, which process comprises:Fractionating epoxidation reaction product for obtaining a liquid fraction containing essentially all molybdenum from the reaction product;Contacting the liquid fraction with anhydrous ammonia for forming a precipitate containing the major portion of the molybdenum and a liquid phase containing 500 ppm or less molybdenum;Separating the liquid phase from the precipitated solid;Evaporating the liquid phase under conditions of elevated temperatures and reduced pressure in the presence of 1 to 3% water for separation into an evaporator overhead vapor essentially free of molybdenum and an evaporator concentrate comprising essentially all of the molybdenum fed to the evaporator;Rapidly cooling evaporator concentrate from about evaporation temperature to about room teType: GrantFiled: November 5, 1992Date of Patent: March 1, 1994Assignee: Texaco Chemical CompanyInventors: Edward T. Marquis, Howard F. Payton, Robert A. Meyer
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Patent number: 5288873Abstract: Disclosed is a novel polyetherdiamine comprising an aminated, alkoxylated 1,2'-hydroxyethyl-2-imidazolidone represented by the formula: ##STR1## where R is H or an alkyl group of from 1 to 16 carbon atoms, R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are selected from the group consisting of hydrogen and lower alkyl radicals having about 1 to 4 carbon atoms, and a+b=n, wherein n is a number of from about 2 to 80, prepared by reacting urea or certain carbonates with an aminoalkoxylamine, alkoxylating the product with alkylene oxide to form a polyol which is reductively aminated to form a novel polyetherdiamine containing an imidazolidone (cyclic urea).Type: GrantFiled: August 13, 1992Date of Patent: February 22, 1994Assignee: Texaco Chemical CompanyInventors: Wei-Yang Su, Michael Cuscurida, Terry L. Renken
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Patent number: 5286884Abstract: A method and apparatus for continuously catalytically exothermally reacting propylene with tertiary butyl hydroperoxide in a reaction mixture stream comprising a tertiary butyl alcohol solution of catalyst, reacting propylene, reacting tertiary butyl hydroperoxide, propylene oxide and reaction by-products by thermosyphonically circulating the reaction mixture stream around a thermosyphonic reactor loop; continuously removing heat from the circulating stream in a downflow heat exchange zone in the reactor and continuously passing the circulating stream of reaction mixture through an adiabatic zone such as an upflow reaction zone of progressively increasing temperature while withdrawing or displacing a product stream in an amount sufficient to maintain a predetermined volume of reaction mixture in the reactor and whereby the density of the reaction mixture in the heat exchange zone will be greater than the density of the reaction mixture in the adiabatic zone whereby continuous thermosyphonic circulation can beType: GrantFiled: July 24, 1992Date of Patent: February 15, 1994Assignee: Texaco Chemical CompanyInventors: Roderick S. Cowley, Darrell D. Kinzler
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Patent number: 5283356Abstract: A method for the manufacture of alkylene carbonates is disclosed. Alkylene carbonates are prepared by reacting alkylene oxides and carbon dioxide in the presence of a metal phthalocyanine catalyst.Type: GrantFiled: August 3, 1992Date of Patent: February 1, 1994Assignee: Texaco Chemical CompanyInventors: Edward T. Marquis, John R. Sanderson
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Patent number: 5276192Abstract: A process for preparing phenoxyethanamines from phenols and 2-oxazolines in quantitative yields was discovered. Phosphoric acid hydrolyzes the amide intermediate from the phenol/2-oxazoline reaction without cleaving the amide at the ether linkage and without undesired aromatic ring substitution. Thus, yield to the desired phenoxyethanamines is often 98% or better, requiring no subsequent purification. In contrast, sulfuric and hydrochloric acids give these undesired side reactions. Phenoxyethanamines are useful in thermosetting resins, pharmaceuticals and as surfactants.Type: GrantFiled: April 22, 1991Date of Patent: January 4, 1994Assignee: Texaco Chemical CompanyInventors: Wei-Yang Su, George P. Speranza
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Patent number: 5276239Abstract: A process is disclosed for preparing synthetic lubricant base stocks having a high dimer to trimer ratio from long-chain olefins. These synthetic lubricant base stocks are prepared in good yield by dimerizing linear olefins using a catalyst comprising a silica gel alkylsulfonic acid.Type: GrantFiled: July 27, 1992Date of Patent: January 4, 1994Assignee: Texaco Chemical CompanyInventors: Sanderson John R., John F. Knifton, Edward T. Marquis