Patents Assigned to Texaco Chemical Co.
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Patent number: 5317076Abstract: A polyurea elastomer which exhibits a reduced moisture transfer rate is disclosed. The elastomer includes an isocyanate, an amine terminated 1,2-polyoxybutylene diol and a chain extender. The isocyanate is preferably a quasiprepolymer of an isocyanate and a material selected from at least one polyol, a high molecular weight polyoxyalkyleneamine or a combination thereof.Type: GrantFiled: April 12, 1993Date of Patent: May 31, 1994Assignee: Texaco Chemical Co.Inventor: Dudley J. Primeaux, II
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Patent number: 5269956Abstract: Solutions of potassium, aliphatic monocarboxylate, hydrocarbyl dicarboxylate and hydrocarbyl triazole, with one or more silicate, phosphate, borate, or nitrate, have superior compatibility and anticorrosion properties, useful in heat transfer fluids, antifreezes and metal corrosion inhibition.Type: GrantFiled: September 25, 1991Date of Patent: December 14, 1993Assignee: Texaco Chemical Co.Inventors: David L. Miller, John M. Larkin
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Patent number: 5266671Abstract: A spray polyurea elastomer which exhibits improved resistance to abrasion is disclosed. The elastomer includes an isocyanate, an amine terminated polyoxyalkylene polyol, a chain extender and a chemically sized filler material. The isocyanate is preferably a quasi-prepolymer of an isoyanate and a material selected from at least one polyol, a high molecular weight polyoxyalkyleneamine or a combination thereof. A method for making a spray polyurea elastomer which is substantially resistant to abrasion is also disclosed.Type: GrantFiled: September 25, 1989Date of Patent: November 30, 1993Assignee: Texaco Chemical Co.Inventor: Dudley J. Primeaux, II
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Patent number: 5242621Abstract: Corrosion inhibitors containing alkanoic, hydrocarbyl dicarboxylic and carbocyclic-substituted, alkanoic acids or salts give high performance, heat transfer fluids and antifreezes, with improved properties including storage stability.Type: GrantFiled: June 3, 1992Date of Patent: September 7, 1993Assignee: Texaco Chemical Co.Inventors: David L. Miller, Brian L. Benac, John F. Knifton
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Patent number: 5234478Abstract: An amido alkanolamine composition obtained by reacting, at a temperature of 10.degree. C.-200.degree. C.:(a) a 4-alkyl-2-morpholinone represented by the formula: ##STR1## in which R represents a monovalent aliphatic radical having from 1 to 10 carbon atoms, and(b) an alkylphenoxypolyoxyalkylene amine represented by the formula: ##STR2## in which R' represents a hydrocarbyl radical having from 4 to 30 carbon atoms, x has a value from 5 to 50, and R" represents a methyl radical or a mixture of hydrogen and methyl radicals is provided.Type: GrantFiled: June 10, 1992Date of Patent: August 10, 1993Assignees: Texaco Inc., Texaco Chemical Co.Inventors: Wei-Yang Su, Sheldon Herbstman, Robert L. Zimmerman, Michael Cuscurida, Wheeler C. Crawford, Daniel T. Daly
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Patent number: 5210195Abstract: Polyoxyalkylene diamines react with excess acrylate to form diesters which react with 2,2',6,6'-tetramethyl-4-aminopiperidines to give a product of formula 1, useful as photostabilizer for photosensitive materials.Type: GrantFiled: November 8, 1991Date of Patent: May 11, 1993Assignee: Texaco Chemical Co.Inventors: Jiang-Jen Lin, George P. Speranza
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Patent number: 5189073Abstract: A process for the production of expanded polyurea elastomers which comprises reacting:a) an aliphatic polyetheramine having primary amino functions and essentially no free hydroxyl groups;b) carbon dioxide in the form of carbamate, obtained by reacting carbon dioxide with a portion of the aliphatic polyetheramines;c) a polyisocyanate;d) water; ande) a catalyst having a tertiary amino group;in the presence off) an inert, halogen-free blowing agent.Type: GrantFiled: March 19, 1992Date of Patent: February 23, 1993Assignee: Texaco Chemical Co.Inventors: Heiko Humbert, Werner Klockemann, Dudley J. Primeaux, II
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Patent number: 5189075Abstract: Polyurea elastomers, made using low molecular weight polyoxyalkylene polyamines, like aminated, propoxylated .alpha.-methyl glucoside, as chain extenders for reactions of polyoxyalkylene polyamine with polyisocyanate, have improved spray and foam properties, including faster cure and foam stability.Type: GrantFiled: February 21, 1992Date of Patent: February 23, 1993Assignee: Texaco Chemical Co.Inventors: Robert L. Zimmerman, Dudley J. Primeaux
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Patent number: 5082917Abstract: A polyurea elastomer is disclosed. The elastomer includes an isocyanate, an amine terminated polyoxyalkylene polyol, and a chain extender. The isocyanate is preferably a quasi-prepolymer of an isocyanate and a material selected from at least one polyol, a high molecular weight polyoxyalkyleneamine or a combination thereof. The chain extender includes a minor amount of a tetraalkylpiperazine and a major amount of diethyltoluenediamine. A one-step method of making the tetraalkylpiperazine and tetraalkylpiperazinone is also disclosed. The method includes reacting a 2-amino-2-alkyl-1-alkanol in the presence of a nickel-iron-copper-manganese catalyst.Type: GrantFiled: May 29, 1990Date of Patent: January 21, 1992Assignee: Texaco Chemical Co.Inventors: Wei-Yang Su, Dudley J. Primeaux, II, Donald H. Champion
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Patent number: 4990575Abstract: Disclosed are novel compositions derived from polyoxyalkylene amines comprising olefin-terminated polyoxyalkylene ureas prepared by reacting polyoxyalkylene amines of the formula: ##STR1## with isopropenyl dimethylbenzyl isocyanate represented by the formula: ##STR2## said composition being represented by the formulas: ##STR3## where R'=H or methyl or ethyl and R" is the nucleus of a trifunctional polyol such as glycerine, trimethylolpropane, etc. and x has a value of 2 to 70.Type: GrantFiled: September 20, 1989Date of Patent: February 5, 1991Assignee: Texaco Chemical Co.Inventors: Jiang-Jen Lin, George P. Speranza
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Patent number: 4940770Abstract: Disclosed are novel compositions useful in mixed epoxy material synthesis, poly(epoxy)-(urea) synthesis and cases where epoxy curing agents require flexibility which are essentially the reaction products of polyoxyalkylene polyamines and epoxides. Specifically the amine reactants comprise polyoxypropylene triamines, amine terminated alkylene glycols and polyoxypropylene diols, such as those represented by Texaco Chemical Company's JEFFAMINE.RTM. T-series, JEFFAMINE.RTM. EDR series and JEFFAMINE.RTM. D-series amines, respectively. The epoxide component prepolymers essentially comprise Bisphenol A diglycidyl ethers. The ratio of JEFFAMINE.RTM. amine to epoxide and the use of acetone are essential to prepare non-gelled products.Type: GrantFiled: November 14, 1988Date of Patent: July 10, 1990Assignee: Texaco Chemical Co.Inventors: George P. Speranza, Jiang-Jen Lin
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Patent number: 4939281Abstract: A process for substantially completely removing a minor amount of molybdenum dissolved in a substantially anhydrous organic solution, such as a heavy distillation fraction resulting from the removal of unreacted propylene, propylene oxide and tertiary butyl alcohol from an epoxidation reaction mixture:wherein from about 1 to about 10 wt. % of an aqueous solution of sodium meta borate containing from about 1 to about 10 wt. % of dissolved sodium meta borate is added to an organic solution containing dissolved molybdenum catalyst in an amount sufficient to provide a molar excess of sodium meta borate, based on the gram atoms of dissolved molybdenum in said organic solution, to provide a mixture,wherein the mixture is maintained at a temperature ranging from about ambient temperature up to about 100.degree. C. at a pressure of about 0 to about 1,000 psig. for about 0.Type: GrantFiled: June 19, 1989Date of Patent: July 3, 1990Assignee: Texaco Chemical Co.Inventors: Edward T. Marquis, John R. Sanderson, Kenneth P. Keating
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Patent number: 4927942Abstract: This invention discloses an improvement in the method for preparation of imidazoles by dehydrogenation of imidazolines over a nickel catalyst comprising reacting the imidazoline over a nickel catalyst in combination with from 2 to 30 weight percent of a catalyst from the group consisting of copper, chromium or a combination of both at a temperature of 160.degree. C. to 250.degree. C. and a pressure of atmospheric to 500 psig.Type: GrantFiled: December 15, 1988Date of Patent: May 22, 1990Assignee: Texaco Chemical Co.Inventors: George P. Speranza, Wei-Yang Su
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Patent number: 4921969Abstract: This invention discloses an improved method for preparation of imidazoles without isolation of the imidazoline intermediate which comprises reacting a diamine with carboxylic acid and heating the mixture at a temperature of 140.degree.-300.degree. C. at a pressure of subatmospheric to about 10 atm to form an amide, passing the amide over a nickel-containing catalyst at a temperature of 180.degree. C. to 250.degree. C. and a pressure of atmospheric to 200 psig and isolating the imidazole.Type: GrantFiled: December 15, 1988Date of Patent: May 1, 1990Assignee: Texaco Chemical Co.Inventors: Wei-Yang Su, George P. Speranza
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Patent number: 4910269Abstract: The invention is an epoxy resin coating composition. The composition comprises:1. a cycloaliphatic epoxy resin (hydrogenated bisphenol A resin), and2. a triacrylate ester, reacted with a mixture of3. a polyether polyamine of the formula:NH.sub.2 CH(CH.sub.3)CH.sub.2 [OCH.sub.2 CH(CH.sub.3)].sub.x NH.sub.2 a.wherein x ranges from 2 to 6, orb. ##STR1## wherein x+y+z ranges from 4 to 6; and 4. piperazine.The weather resistant formulations cure rapidly to form blemish-free, attractive, high-gloss coatings.Type: GrantFiled: October 13, 1988Date of Patent: March 20, 1990Assignee: Texaco Chemical Co.Inventor: Harold G. Waddill
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Patent number: 4892959Abstract: A method is disclosed for the improved production of N-methylpyrrolidine at moderate conditions which comprises the steps of reacting N-methylpyrrolidone with hydrogen over a copper chromite catalyst at a moderate temperature and a pressure of 1000 psig to 5000 psig and thereafter isolating the N-methylpyrrolidine by extraction with an aliphatic hydrocarbon solvent having a boiling point less than 70.degree. C. or greater than 90.degree. C.Type: GrantFiled: April 22, 1988Date of Patent: January 9, 1990Assignee: Texaco Chemical Co.Inventors: Donald H. Champion, John F. Knifton, Wei-Yang Su
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Patent number: 4888446Abstract: The invention concerns a method for the preparation of polyoxyalkylene compounds wherein each compound has one primary amine group and one primary hydroxyl group. The method comprises alkoxylating a t-butyl ethylene, propylene or butylene glycol then aminating the product. Finally the t-butyl group is cleaved by an acid. The compounds of the method of this invention are useful in urethane/urea plastics including foams, elastomers and coatings.Type: GrantFiled: April 11, 1988Date of Patent: December 19, 1989Assignee: Texaco Chemical Co.Inventors: Howard P. Klein, Michael Cuscurida