Patents Represented by Attorney, Agent or Law Firm Russell R. Stolle
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Patent number: 5494595Abstract: This invention discloses an oil soluble polyether composition, comprising: ##STR1## wherein R is either a C.sub.14-20 alkyl or C.sub.9-12 alkylphenyl; A is ##STR2## where x is from 7 to 13; i, j, k, and l are each independently from 0 to 35 and the sum (i+j+k+l) is from 8 to 35;o, p, and q are each independently 0 to 1 and the sum (o+p+q) is from 0 to 3; and,the average mole ratio of the glycidyl ether monomeric unit A to the initiator unit RO is from 0.4:1 to 1.5:1.This invention also discloses an anionic polymerization process for producing an oil soluble polyether composition, comprising reacting a mixture of propylene oxide and a C.sub.8-14 alkyl glycidyl ether with an initiator obtained from the group consisting of a C.sub.14-20 alkanol and a C.sub.9-12 alkylphenol under the influence of an alkaline metal alkoxide catalyst.Type: GrantFiled: December 30, 1994Date of Patent: February 27, 1996Assignee: Huntsman CorporationInventor: Edward C. Y. Nieh
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Patent number: 5480955Abstract: An aliphatic spray polyurea elastomer is disclosed. The elastomer comprises an (A) and (B) component. The (A) component includes an aliphatic isocyanate. The (B) component includes an amine terminated polyoxyalkylene polyol and an amine terminated aliphatic chain extender.Type: GrantFiled: September 7, 1993Date of Patent: January 2, 1996Assignee: Huntsman CorporationInventor: Dudley J. Primeaux, II
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Patent number: 5466778Abstract: Disclosed is an improved process for polymerization of tetrahydrofuran to prepare poly(tetrahydrofuran) products with a MW range of 200 to 5000 and a dispersity of <2, which comprises premixing a carboxylic anhydride, such as, for example acetic anhydride and a dealuminated Y-zeolite and subsequently adding tetrahydrofuran at a temperature below 100.degree. C., wherein the order of addition of reactants is critical and the yield is improved by premixing the acetic anhydride and zeolite and then adding tetrahydrofuran.Type: GrantFiled: October 19, 1993Date of Patent: November 14, 1995Assignee: Huntsman CorporationInventors: Timothy L. Lambert, John F. Knifton
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Patent number: 5449725Abstract: This invention presents a series of polyfunctional polymers useful as deinking agents. The polymers, which generally have molecular weights in the 2,000-100,000 range, can be used to effectively separate and remove ink in a variety of deinking processes, including flotation, wash, and mechanical, resulting in fibers of superior brightness.Type: GrantFiled: November 27, 1991Date of Patent: September 12, 1995Assignee: Huntsman CorporationInventors: Ratana Kanluen, Brigitte H. Licht
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Patent number: 5442034Abstract: Spray polyurea elastomers are disclosed made from an (A) component and a (B) component, where the (A) component has a quasi-prepolymer made from an isocyanate and an active hydrogen-containing material, such as a polyoxyalkylenepolyamine. The (B) component includes an amine resin, such as an amine-terminated polyoxyalkylene polyol which may be the same or different from the polyoxyalkylene polyamine of the quasi-prepolymer. The viscosity of the (A) component is reduced by the inclusion of an organic, alkylene carbonate, such as ethylene carbonate, propylene carbonate, butylene carbonate, dimethyl carbonate, and the like. The alkylene carbonate also serves as a compatibilizer between between the two components, thus giving an improved mix of the system.Type: GrantFiled: June 1, 1994Date of Patent: August 15, 1995Assignee: Huntsman CorporationInventor: Dudley J. Primeaux, II
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Patent number: 5436351Abstract: Disclosed is a novel composition of the formula: ##STR1## wherein R=H, methyl, ethyl, or a mixture thereof and R.sup.5 =a saturated or unsaturated alkyl group from a fatty acid containing 7 to 22 carbon atoms and a+b=n, wherein n is from about 2 to 80, resulting from alkoxylating an substituted imidazolidone, reductively aminating the alkoxylated product and reacting the aminated product with a fatty acid; and, to its use as a surfactant in glycol-water mixtures, such as, for example, propylene glycol based wing deicers thickened with polyacrylic acids.Type: GrantFiled: August 27, 1993Date of Patent: July 25, 1995Assignee: Huntsman CorporationInventors: David A. Coffey, Wei-Yang Su
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Patent number: 5422042Abstract: This invention discloses the composition and preparation of imidazolidone modified polyetheramines. The alkyl polyetheramine is derived from 2-isopropylaminoethylamine and urea. N-isopropyl-2-imidazolidone is the intermediate product, which is alkoxylated and aminated to prepare the N-isopropyl imidazolidone polyetheramine. This invention also discloses the composition and preparation of oxazolidinone modified polyetheramines by reductive amination of polyols derived from 4-ethyl-4-hydroxymethyl-2-oxazolidone. The products of this invention have been tested in epoxy resin applications and improved properties have been demonstrated. These products may also be useful in polyurea applications.Type: GrantFiled: November 19, 1993Date of Patent: June 6, 1995Assignee: Huntsman CorporationInventors: Waddill: Harold G., Wei-Yang Su, Michael Cuscurida, Terry L. Renken
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Patent number: 5414063Abstract: A process control scheme for temporarily slowing or killing the production of polypropylene while idling the reactor using a fourth generation catalyst system containing a solid magnesium chloride supported titanium tetrachloride catalyst component containing an internal strong electron donor in combination with a silicon compound, and an organoaluminum compound (cocatalyst) is disclosed. This process entails the introduction of an amount of an external strong electron donor to the ongoing polymerization reaction. The polymerization reaction can be restarted by introducing an additional amount of the organoaluminum compound.Type: GrantFiled: March 30, 1993Date of Patent: May 9, 1995Assignee: Huntsman Polypropylene CorporationInventors: Horst K. Seeger, Yao-Ching Liu, LeVoy G. Haight, Luis A. Pagan, Kimberly R. Payne, Jeffrey J. Vanderbilt
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Patent number: 5414087Abstract: Disclosed is a one-step method for preparing N-alkylpiperazines which eliminates the initial preparation and isolation of piperazine which comprises reacting a carbonyl compound and an amine in the presence of hydrogen over a metallic hydrogenation-dehydrogenation catalyst from Group VIII of the Periodic Table such as, for example, nickel, copper, cobalt, chromium, palladium, platinum or ruthenium, alone or in combination with other Group VIII metals or transition metals selected from the group consisting of manganese, iron, zinc, copper and chromium.Type: GrantFiled: July 7, 1993Date of Patent: May 9, 1995Assignee: Huntsman CorporationInventors: George P. Speranza, James H. Templeton
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Patent number: 5405977Abstract: A method for removing organic halide contaminants from alkylene carbonates is disclosed. Organic halide contaminants are removed from alkylene carbonates by contacting the contaminated alkylene carbonate with hydrotalcite.Type: GrantFiled: January 4, 1993Date of Patent: April 11, 1995Assignee: Huntsman CorporationInventors: Michael Cuscurida, Edward T. Marquis
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Patent number: 5399663Abstract: An amine terminated random copolymer containing ethylene oxy/propylene oxy segments may be reacted with hexamethylene diamine and adipic acid monomers to make improved poly(etheramide) segmented block copolymers. Ordinarily, poly(propylene glycol) diamines tend to phase separate under these conditions and polyamide-6,6 could not be so modified. The resultant poly(etheramide) segmented block copolymer has improved impact performance, reduced modulus and lower glass transition as contrasted with the non-modified polyamide-6,6.Type: GrantFiled: April 15, 1993Date of Patent: March 21, 1995Assignee: Huntsman CorporationInventor: Richard J. Clark, II
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Patent number: 5391826Abstract: Diamidopolyamines are prepared by reacting glutamic acid with two moles, per mole of glutamic acid, of a defined class of diamines, including oxyethyelene diamines, oxypropylenediamines, oxyethylene/propylene diamines, oxypropylene triamines, 1,2-diaminocyclohexane and isophorone diamine, whereby each of the carboxyl groups of the glutamic acid will react with an amine group of the amine reactant to thereby provide primary amine terminated amidopolyamines containing, internally, the unreacted primary amine group of the glutamic acid.Type: GrantFiled: May 4, 1990Date of Patent: February 21, 1995Assignee: Huntsman CorporationInventors: George P. Speranza, Jiang-Jen Lin
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Patent number: 5362913Abstract: Highly saturated, highly aminated alkoxylated polymers may be reliably made by an improved process involving the steps of (1) polymerizing one or more unsaturated hydrocarbons to form a liquid polymer, where at least one of the unsaturated hydrocarbons is butadiene; (2) providing the liquid polymer with terminal hydroxyl groups; (3) alkoxylating the hydroxylated liquid polymer with one or more alkylene oxides having at least three carbon atoms to provide secondary terminal hydroxyl groups; (4) simultaneously aminating and hydrogenating the alkoxylated liquid polymer to produce an essentially saturated, aminated, alkoxylated liquid polymer in the presence of hydrogen and ammonia and a catalyst. The catalyst preferably contains nickel as the single greatest component, with smaller amounts of copper, chromium and molybdenum. Excesses of hydrogen and ammonia are used in the final step.Type: GrantFiled: November 16, 1992Date of Patent: November 8, 1994Assignee: Huntsman CorporationInventors: John F. Knifton, Michael Cuscurida
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Patent number: 5352835Abstract: Disclosed is a process for the amination of polyols to form primary amines which comprises reacting a polyoxyalkylene alcohol or polyol having a molecular weight of from about 230 to 5000 and ammonia in the presence of hydrogen over a catalyst consisting essentially of 10 to 35 wt % nickel, 1 to 20 wt % copper and 0.1 to 2.0 wt % optionally chromium or molybdenum promoter impregnated onto a .theta.-alumina support at a temperature of 100.degree. C. to 300.degree. C. and a pressure of 1000 psig to 3000 psig wherein the .theta.-alumina support results from calcining .gamma.-alumina or pseudo-boehmite for 2-4 hours at 900.degree.-1100.degree. C.Type: GrantFiled: February 8, 1993Date of Patent: October 4, 1994Assignee: Texaco Chemical CompanyInventors: Pei-Shing E. Dai, Terry L. Renken, Laurence D. Neff
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Patent number: 5348712Abstract: It has been discovered that relatively large cyclic and open chain carbonates are extremely efficient in the selective extraction of metal ions, such as gold, silver, platinum and mercury from aqueous solution without the need for a potentially hazardous, organic solvent or use of a corrosive salt, such as NaCl. For example, 1,2-decane carbonate extracted >99.9% mercury, 99.76% gold, 97.5% silver and 79.0% platinum. The homologous 1,2-dodecane carbonate was found to extract 99.9% gold and silver from aqueous solution and 95.8% platinum. Didecyl carbonate extracted 77% gold from aqueous solution. The method of this invention is simpler than prior techniques and eliminates the need for potentially hazardous solvents (toxic, flammable and environmentally unfavorable) and corrosive additives, such as salt, NaCl, used as a salting agent in prior methods.Type: GrantFiled: February 9, 1993Date of Patent: September 20, 1994Assignee: Texaco Chemical CompanyInventors: Edward T. Marquis, Martin J. Plishka
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Patent number: 5349110Abstract: Disclosed is a process for preparation of monoalkyl ethers by reacting low molecular weight olefins and the corresponding oxiranes, in the presence of a catalyst comprising an acidic heterogeneous or homogeneous catalyst, generally represented by the equation: ##STR1## where R, R', R" may be hydrogen or an alkyl radical.Type: GrantFiled: August 2, 1993Date of Patent: September 20, 1994Assignee: Texaco Chemical CompanyInventor: John F. Knifton
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Patent number: 5344996Abstract: The removal of basic alkaline earth metal catalysts from alcohol alkoxylate product streams using acid days wetted with water is described. The catalyst level may be reduced to 1 ppm or less in many instances. Effective acid days include, but are not limited to silica days, silica magnesia clays, alumina, montmorillonite days, mixtures thereof and the like. Contacting of the day with the alcohol alkoxylate may take place at ambient to 120.degree. C.Type: GrantFiled: October 1, 1992Date of Patent: September 6, 1994Assignee: Texaco Chemical CompanyInventors: Edward C. Nieh, Michael Cuscurida
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Patent number: 5344984Abstract: A method for preparing "twin-tailed" tertiary amines which have two moles of alkoxylated phenol bonded to each nitrogen function of a molecule of methylamine and represented by the formula: ##STR1## wherein x represents zero to about 30 which comprises alkylating a mole of methylamine with two moles of alkoxylated alkylphenol over a catalyst comprising:5 to 70% nickel;1 to 20% copper;0.1 to 10% chromium; and0.1 to 10% molybdenum on an alumina support.Type: GrantFiled: April 8, 1993Date of Patent: September 6, 1994Assignee: Texaco Chemical CompanyInventors: John F. Knifton, Carter G. Naylor
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Patent number: 5342918Abstract: Described are carboxyl-terminated polyetheramides of the formula: ##STR1## where R is a moiety from an alcohol or hydroxy compound having a valence of k; R' is independently hydrogen or lower alkyl from 1 to 4 carbon atoms; R" is independently a straight or branched alkylene or aromatic moiety averaging from about 2 to 36 carbon atoms; x averages from about 2 to 100; z averages from about 20 to about 250; k averages from about 1 to 3; m is 0 or 1; and p is independently 5 to 11. Because the carboxyl-terminated polyetheramides are all carboxyl-terminated, they do not gel. They are expected to have good impact strength as well as differing solubilities depending on the polyetheramine incorporated.Type: GrantFiled: April 30, 1993Date of Patent: August 30, 1994Assignee: Texaco Chemical CompanyInventors: Richele T. Howelton, George P. Speranza
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Patent number: H1407Abstract: Synthetic lubricant base stocks having improved properties are disclosed. The base stocks may be obtained by a two-step process, comprising the steps of (1) co-reacting vinylcyclohexene and long-chain linear olefin with a free-radical initiator; and (2) further reacting the mixture resulting from step (1) in the presence of an acidic montmorillonite clay.Type: GrantFiled: September 10, 1990Date of Patent: January 3, 1995Assignee: Texaco Chemical CompanyInventors: John R. Sanderson, Wheeler C. Crawford