Patents by Inventor Wei-Yang Su
Wei-Yang Su has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20130280155Abstract: Amine compositions comprising sterically hindered amines and associated methods are provided. In some embodiments, amine compositions of the present disclosure may be useful for selective removal of H2S from an acidic gas stream.Type: ApplicationFiled: November 21, 2011Publication date: October 24, 2013Applicant: HUNTSMAN PETROCHEMICAL LLCInventors: Wei-Yang Su, Robert A. Grigsby, JR., Jingjun Zhou
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Publication number: 20110112335Abstract: The present invention relates to a process for producing an odorless and colorless industrial grade propylene glycol from glycerol obtained during the manufacturing of biodiesel. The process includes hydrogenating the glycerol to form a hydrogenated product, distilling the hydrogenated product to form a glycol product, and contacting the glycol product with a treatment bed. The propylene glycol may be used in various industrial and consumer applications and products such as personal care products.Type: ApplicationFiled: June 2, 2009Publication date: May 12, 2011Applicant: HUNTSMAN PETROCHEMICAL LLCInventors: Srinivasa Godavarthy, Wei-Yang Su, Ralph M. DiGuilio, Stan Harville, Matthew W. Forkner
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Publication number: 20110009512Abstract: A tertiary amine, such as a tertiary amine catalyst that is useful in the production of polyurethanes, may undergo decomposition, which may result in the production of undesirable products. These tertiary amines, however, may be treated with a primary amine containing material to reduce the presence of the undesirable products to an acceptable level. Thus, a foam made from a treated tertiary amine will also have a reduction in the presence of the same undesirable products.Type: ApplicationFiled: March 18, 2009Publication date: January 13, 2011Applicant: Huntsman Petrochemical LLCInventors: Robert A. Grigsby, JR., Ernest L. Rister, JR., Wei-Yang Su, Eugene P. Wiltz, JR., Robert B. Moore
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Patent number: 7304183Abstract: Embodiments of the present invention disclose a process for the co-production of bis(para-aminocyclohexyl) methane (PACM). Also disclosed are articles of manufacture made using PACM produced by methods of this invention. The methods of the present invention generally include a first mixture having methylene di-aniline (MDA) and a second aromatic amine. The first mixture has less than 15% polymeric MDA by weight and the second aromatic amine is present in an amount to render the first mixture a liquid. The first mixture is hydrogenated to produce a product mixture comprising PACM and at least one second non-aromatic amine.Type: GrantFiled: December 15, 2005Date of Patent: December 4, 2007Assignee: Huntsman Petrochemical CorporationInventors: Wei-Yang Su, Ralph M. DiGuilio, Pete S. Morford
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Patent number: 7169268Abstract: The present invention concerns a process for providing tertiary amine products which are color-stable, and have a greatly reduced tendency to take on color during their storage. According to the invention, an ethyleneamine derivative is added to the distillation pot prior to or during the distillation of the tertiary amine product. Preferably, the ethyleneamine derivative has a higher boiling point than the desired tertiary amine product so as to preclude the ethyleneamine from distilling over with the tertiary amine.Type: GrantFiled: June 6, 2003Date of Patent: January 30, 2007Assignee: Huntsman Petrochemical CorporationInventors: Wei-Yang Su, Mark L. Posey, Maarten P. ter Weeme
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Patent number: 7074963Abstract: Disclosed herein is a process for the reductive alkylation of primary amines to form secondary amines, by high pressure reaction of the primary amine with an alkylating agent and hydrogen in the presence of a catalyst which comprises metallic palladium. A process of the present invention is characterized in having high conversion rates and high selectivities, both greater than 95% on a first pass through the reactor. According to a preferred embodiment, the secondary amine produced comprises at least one 2-alkyl group bonded to the nitrogen atom of the primary amine product.Type: GrantFiled: July 18, 2003Date of Patent: July 11, 2006Assignee: Huntsman Petrochemical CorporationInventors: Wei-Yang Su, Christopher H. Nelli
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Publication number: 20060135814Abstract: Embodiments of the present invention disclose a process for the co-production of bis(para-aminocyclohexyl) methane (PACM). Also disclosed are articles of manufacture made using PACM produced by methods of this invention. The methods of the present invention generally include a first mixture having methylene di-aniline (MDA) and a second aromatic amine. The first mixture has less than 15% polymeric MDA by weight and the second aromatic amine is present in an amount to render the first mixture a liquid. The first mixture is hydrogenated to produce a product mixture comprising PACM and at least one second non-aromatic amine.Type: ApplicationFiled: December 15, 2005Publication date: June 22, 2006Applicant: Huntsman Petrochemical CorporationInventors: Wei-Yang Su, Ralph DiGuilio, Pete Morford
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Patent number: 6888030Abstract: Inclusion of a branched alcohol in the catalytic hydrogenation reaction involving an aliphatic nitro compound dramatically increases the efficiency of the conversion of nitro groups into amino groups. This discovery is of particular value in the production of polyalkyleneamines via nitration of a polyalkene, such as a polybutene, and its subsequent reduction. The polyalkyleneamines so produced are useful as dispersant additives for motor oils and fuels.Type: GrantFiled: October 22, 2002Date of Patent: May 3, 2005Assignee: Huntsman Petrochemical CorporationInventors: Wei-Yang Su, Wheeler C. Crawford, John M. Larkin
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Publication number: 20040019238Abstract: Disclosed herein is a process for the reductive alkylation of primary amines to form secondary amines, by high pressure reaction of the primary amine with an alkylating agent and hydrogen in the presence of a catalyst which comprises metallic palladium. A process of the present invention is characterized in having high conversion rates and high selectivities, both greater than 95% on a first pass through the reactor. According to a preferred embodiment, the secondary amine produced comprises at least one 2-alkyl group bonded to the nitrogen atom of the primary amine product.Type: ApplicationFiled: July 18, 2003Publication date: January 29, 2004Applicant: Huntsman Petrochemical CorporationInventors: Wei-Yang Su, Christopher H. Nelli
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Publication number: 20040000471Abstract: The present invention concerns a process for providing tertiary amine products which are color-stable, and have a greatly reduced tendency to take on color during their storage. According to the invention, an ethyleneamine derivative is added to the distillation pot prior to or during the distillation of the tertiary amine product. Preferably, the ethyleneamine derivative has a higher boiling point than the desired tertiary amine product so as to preclude the ethyleneamine from distilling over with the tertiary amine.Type: ApplicationFiled: June 6, 2003Publication date: January 1, 2004Applicant: Huntsman Petrochemical CorporationInventors: Wei-Yang Su, Mark L. Posey, Maarten P. ter Weeme
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Publication number: 20030078344Abstract: Inclusion of a branched alcohol in the catalytic hydrogenation reaction involving an aliphatic nitro compound dramatically increases the efficiency of the conversion of nitro groups into amino groups. This discovery is of particular value in the production of polyalkyleneamines via nitration of a polyalkene, such as a polybutene, and its subsequent reduction. The polyalkyleneamines so produced are useful as dispersant additives for motor oils and fuels.Type: ApplicationFiled: October 22, 2002Publication date: April 24, 2003Applicant: Huntsman Petrochemical CorporationInventors: Wei-Yang Su, Wheeler C. Crawford, John M. Larkin
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Patent number: 6340559Abstract: Provided herein are developer solutions useful in producing semiconductor-based circuit elements or precursors thereof, which contain tris-(2-hydroxyethyl)methylammonium hydroxide. Developers according to the invention are either aqueous or alcoholic solutions of tris-(2-hydroxyethyl)methylammonium hydroxide which preferably further comprise a stabilizer. Through use of the compositions provided herein, greatly reduced levels of volatile amines are released during the developing process which lessens the burden on clean room atmosphere purification equipment owing to lessened airborne impurities.Type: GrantFiled: February 21, 2001Date of Patent: January 22, 2002Assignee: Huntsman Petrochemical CorporationInventors: Wei-Yang Su, Stephen Lee Sjoberg, Wheeler Conrad Crawford
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Patent number: 6210452Abstract: Highly effective fuel additives that control the formation of deposits in internal combustion engines, particularly, in the fuel injection system and combustion chamber of such engines. The fuel additives comprise carboxylic acid alkoxylates, and are particular suited for use with nitrogen-containing fuel detergents. Fuel compositions comprising the fuel additives, and methods of controlling engine deposits are also disclosed.Type: GrantFiled: February 8, 2000Date of Patent: April 3, 2001Assignee: Hhntsman Petrochemical CorporationInventor: Wei-Yang Su
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Patent number: 6191317Abstract: Polyalkyl hydroxyaromatics may be prepared from polyalkylenes and hydroxyaromatics in the presence of an acid catalyst and an organic solvent having a boiling point range with an initial boiling point value of below or about the boiling point of the selected hydroxyaromatic reactants and final boiling point of above or equal to about the boiling point of alkylhydroxyaromatic by-product of the reaction. Using this method, accumulation of undesirable alkylhydroxyaromatic by-product/s in a reaction vessel may be minimized, and/or viscosity of polyalkyl hydroxyaromatic product reduced, allowing for increased ease of transfer and transportation.Type: GrantFiled: August 31, 1999Date of Patent: February 20, 2001Assignee: Huntsman Petrochemical CorporationInventor: Wei-Yang Su
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Patent number: 6093854Abstract: Disclosed herein is a process for producing alkanolamines from the reaction between a polyolefin epoxide and an organic amino compound under conditions of elevated temperature and pressure, in the presence of a catalytic amount of an alcohol. Higher reaction rates for alkanolamine production than provided in the prior art may be achieved by use of a process according to the invention. Alkanolamines having various levels of nitrogen may be produced by the invention.Type: GrantFiled: October 14, 1999Date of Patent: July 25, 2000Assignee: Huntsman Petrochemical CorporationInventors: Wei-Yang Su, John Michael Larkin
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Patent number: 6063145Abstract: This invention concerns a fuel additive comprising an etheramine alkoxylate, and fuel compositions and additive concentrates made therefrom. The etheramine alkoxylate may be of formula: ##STR1## where R.sup.1 is a straight or branched alkyl, or alkylaryl; R.sup.2 is independently in each occurrence hydrogen or alkyl from 1 to 6 carbons; R.sup.3 is independently in each occurrence hydrogen or alkyl of from 1 to 6 carbons; m averages from about 2 to about 20; and x and y each independently average from about 0 to 2, where x+y averages from about 1 to about 4.Type: GrantFiled: June 26, 1998Date of Patent: May 16, 2000Assignee: Huntsman Petrochemical CorporationInventors: John M. Larkin, Wei-Yang Su, Terry L. Renken
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Patent number: 6060625Abstract: A process for the alkoxylation of a polyetheramine to form an etheramine alkoxylate. In the process, a polyetheramine is reacted with an alkylene oxide in the presence of an alcohol to form the etheramine alkoxylate. The alcohol serves as a catalyst to allow the reaction proceed at a heightened temperature as compared to the reaction in the absence of alcohol, while at the same time limiting the amount of glycol by-product production which would otherwise typically form when higher polyetheramines are to be alkoxylated. The alcohol may be, for instance, ethanol or methanol.Type: GrantFiled: April 30, 1999Date of Patent: May 9, 2000Assignee: Huntsman Petrochemical CorporationInventors: Wei-Yang Su, Mike W. McKinney, Timothy L. Lambert, Edward T. Marquis
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Patent number: 5861051Abstract: This invention relates to a process for the separation of carbon dioxide and hydrogen sulfide from gases using a promoted methyldiethanolamine (MDEA) solution. In one broad respect, this invention is a gas separation process, including contacting an aqueous treating solution with a sour gas stream that contains carbon dioxide and hydrogen sulfide under conditions such that the gas stream is sweetened, wherein the aqueous treating solution contains methyldiethanol amine and 2-(2-aminoethoxy)ethanol in a ratio of at least about 2:1; and wherein the process is conducted in the absence of a reclamation step. By practice of this invention, the amount of 2-(2-aminoethoxy)ethanol that is converted to urea(bis-(2-hydroxyethoxyethyl)urea (BHEEU)) is minimized which obviates the need for a reclamation (regeneration) unit.Type: GrantFiled: September 30, 1996Date of Patent: January 19, 1999Assignee: Huntsman Petrochemical CorporationInventors: James E. Critchfield, Wei-Yang Su, Thomas J. Kenney, Patrick E. Holub
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Patent number: 5782938Abstract: This invention concerns a an amidoalkanolaminoester composition obtained by reacting: (1) a reaction product of dialkyl maleate such as diethyl maleate and an alkylalkanolamine such as N-methylethanolamine; with (2) a hydrocarbyl oxypolyoxyalkene amine represented by the formula ##STR1## in which R represents an alkyl, an alicyclic, an alkylalicyclic radical having from 12 to 30 carbon atoms, or R'--Ar--; wherein R' represents a hydrocarbyl radical having from 4 to 12 carbon atoms; wherein x has a value of from about 10 to 16; wherein Ar is a divalent aromatic moiety such as divalent benzene; and wherein R" is an ethyl or methyl radical or a mixture of methyl and ethyl radicals. The amidoalkanolaminoester may be used as a fuel additive.Type: GrantFiled: May 23, 1997Date of Patent: July 21, 1998Assignee: Huntsman Petrochemical CorporationInventor: Wei-Yang Su
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Patent number: 5516343Abstract: The instant invention relates to a hydrocarbon composition, such as motor fuel and lubricant compositions, containing a polyetheramide as a deposit control additive, to a concentrate containing such a polyetheramide as a deposit control additive, and to a method for improving the operation of an internal combustion engine.Type: GrantFiled: March 14, 1995Date of Patent: May 14, 1996Assignee: Huntsman CorporationInventor: Wei-Yang Su