Patents Represented by Attorney, Agent or Law Firm Ron D. Brown
  • Patent number: 6436883
    Abstract: Provided herein are functional fluid compositions useful in hydraulic fluid and gear oil formulations. The formulations according to the invention include a predominant amount of at least one polyoxyalkylene glycol derived from the addition polymerization of an alcohol in the presence of an alkylene oxide mixture which contains a substantial amount of ethylene oxide. Fluids according to the invention exhibit suitable lubricity and stability characteristics and are generally water soluble to a degree sufficient to preclude formation of a sheen on the surface of a body of water into which a fluid according to the invention is brought into contact.
    Type: Grant
    Filed: April 6, 2001
    Date of Patent: August 20, 2002
    Assignee: Huntsman Petrochemical Corporation
    Inventor: Edward Chung-Yit Nieh
  • Patent number: 6420327
    Abstract: Coating remover compositions comprising an alkylene carbonate, hydrogen peroxide, water, a first alcohol, a second alcohol, and, optionally, pine oil that exhibit low toxicity. Further, a method of removing a coating from a surface. The method involves contacting a composition comprising an alkylene carbonate, hydrogen peroxide, water, a first alcohol, a second alcohol, and optionally, pine oil to a coated surface, and allowing the composition to contact the coated surface for a period of time, and under conditions effective to cause blistering of the coating. The compositions and method of the present invention are particularly suited for use with varnishes.
    Type: Grant
    Filed: August 9, 2000
    Date of Patent: July 16, 2002
    Assignee: Huntsman Petrochemical Corporation
    Inventors: James R. Machac, Jr., Edward T. Marquis, Susan A. Woodrum, Howard P. Klein
  • Patent number: 6417135
    Abstract: Provided herein are supported catalysts and processes useful in the dehydrogenation of hydrocarbons. Catalysts made according to the invention possess a unique pore size distribution which provides a favorable balance of selectivity, activity, and thermal stability. In a preferred form of the invention, catalysts made in accordance of the invention are regenerable. Detergent range paraffins may be converted to monoolefins using a catalyst and process provided by the invention.
    Type: Grant
    Filed: March 22, 2000
    Date of Patent: July 9, 2002
    Assignee: Huntsman Petrochemical Corporation
    Inventor: David R. Dyroff
  • Patent number: 6340559
    Abstract: 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: Grant
    Filed: February 21, 2001
    Date of Patent: January 22, 2002
    Assignee: Huntsman Petrochemical Corporation
    Inventors: Wei-Yang Su, Stephen Lee Sjoberg, Wheeler Conrad Crawford
  • Patent number: 6312560
    Abstract: A process for dewatering lime mud in a kraft pulping process is described. The process includes an improvement which comprises adding an effective amount of an alkyleneamine to the lime mud prior to filtration. The preferred alkyleneamine is ethyleneamine, that is, an amine having at least one —(CR2—CR2—NH—)— unit wherein each R independently is H or an alkyl (straight, branched or cyclic) group of from about 1 to about 10 carbon atoms. Ethyleneamines include ethylenediamine, diethylenetriamine, triethylenediamine, triethylenetetramine, tetraethylenepentamine, piperazine, aminoethylpiperazine, and ethyleneamine mixtures such as mixtures of ethyleneamine oligomers having an average molecular weight of about 200-500.
    Type: Grant
    Filed: July 23, 1999
    Date of Patent: November 6, 2001
    Assignee: Huntsman Ethyleneamines Ltd.
    Inventor: Alan P. Croft
  • Patent number: 6262297
    Abstract: A method of preparing hydroxyalkylcarbamates from six-membered cyclic carbonates. The method involves reacting a six-membered cyclic carbonate with anhydrous ammonia or aqueous ammonium hydroxide. The present invention also provides for hydroxyalkylcarbamates prepared from six-membered cyclic carbonates, and for coating compositions comprising hydroxyalkylcarbamates prepared according to the present invention.
    Type: Grant
    Filed: September 25, 2000
    Date of Patent: July 17, 2001
    Assignee: Huntsman Petrochemical Corporation
    Inventors: John H. Clements, Howard P. Klein, Edward T. Marquis, James R. Machac, Jr.
  • Patent number: 6258866
    Abstract: Provided herein are subcombinations from which polyurethane foams and polyurethane foams containing polyisocyanurates may be prepared. The subcombinations are unique in that they contain components which synergistically act towards promoting compatibility between a blowing agent and the remaining components of the formulation. Through the use of the teachings herein, blowing agent concentrations in excess of 25% by weight of the total subcombination may be incorporated.
    Type: Grant
    Filed: January 31, 2000
    Date of Patent: July 10, 2001
    Assignee: Huntsman Petrochemical Corporation
    Inventor: Frank C. Kohoutek
  • Patent number: 6245240
    Abstract: Provided herein is a process for treatment of solutions which contain ferrous, ferric and soluble manganese species which process comprises addition of an oxidizing agent to such a solution to cause formation of manganese dioxide particles and adding manganese dioxide seed particles so as to cause nascent manganese dioxide agglomerates formed from the action of the addition of the oxidizing agent on the soluble manganese species to adhere to the manganese dioxide seed particles. By a process according to the invention, it is possible to effectively remove the soluble manganese species as solid manganese dioxide by having effective control over the size of the manganese dioxide particles to enable their subsequent removal using ordinary filtration techniques.
    Type: Grant
    Filed: November 15, 1999
    Date of Patent: June 12, 2001
    Assignee: Tioxide Group Services Limited
    Inventor: Brian Cameron Noble
  • Patent number: 6218582
    Abstract: A method for the preparation of methyl tertiary butyl ether is provided wherein a mixture of methanol and substantially peroxides-free tertiary butyl alcohol are catalytically reacted to form a reaction product comprising unreacted methanol, unreacted tertiary butyl alcohol, water, isobutylene and methyl tertiary butyl ether, that is separated into a substantially anhydrous first lighter distillation fraction comprising isobutylene, methanol and methyl tertiary butyl ether and a second heavier distillation fraction comprising methanol, tertiary butyl alcohol and water, and wherein the isobutylene and methanol in the first distillation fraction are reacted to form an isobutylene conversion product that contains additional methyl tertiary butyl ether that is substantially free from tertiary butyl alcohol.
    Type: Grant
    Filed: May 19, 1995
    Date of Patent: April 17, 2001
    Assignee: Huntsman International LLC
    Inventors: Charles Joseph Kruse, Kyle Lee Preston, Brian Lawrence Benac
  • Patent number: 6143842
    Abstract: Disclosed herein are novel polymers and copolymers of alphaolefins produced using various Ziegler/Natta and Metallocene catalysts. Commercial production of these polymers is now possible for the first time owing to the polymer harvesting technology also disclosed herein.
    Type: Grant
    Filed: June 29, 1998
    Date of Patent: November 7, 2000
    Assignee: Huntsman Polymers Corporation
    Inventors: Samuel J. Paton, Stephen C. McHaney, Steven L. Oetting, Karl L. Herzog
  • Patent number: 6093750
    Abstract: An improved process for manufacture of expandable polymer particles is provided. The continuous process disclosed produces expandable polymer pellets in a single step while eliminating many of the dangers inherent in processes of prior art employed for the same. The polymers produced herein are of uniform size, and may be molded into various articles of manufacture using existing equipment and techniques known to those skilled in the art.
    Type: Grant
    Filed: August 11, 1999
    Date of Patent: July 25, 2000
    Assignee: Huntsman Corporation
    Inventors: Thomas Orr Craig, George Bruce Klingensmith
  • Patent number: 6093854
    Abstract: 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: Grant
    Filed: October 14, 1999
    Date of Patent: July 25, 2000
    Assignee: Huntsman Petrochemical Corporation
    Inventors: Wei-Yang Su, John Michael Larkin
  • Patent number: 6063966
    Abstract: An impure methyl tertiary butyl ether product contaminated with isobutylene, methanol and water is purified by continuous counter-current contact with water and an isobutylene fraction in an extraction zone comprising a counter-current contact tower to provide an overhead raffinate comprising isobutylene, methyl tertiary butyl ether and a minor amount of water and an extract comprising methanol, water and a minor amount of methyl tertiary butyl ether; the overhead raffinate being separated in a methyl tertiary butyl ether purification distillation zone into a lighter distillation fraction comprising isobutylene and water and a heavier distillation fraction consisting essentially of methyl tertiary butyl ether; the lighter distillation fraction being decanted to remove water and to provide a distillate isobutylene fraction that is returned to the contact tower as the isobutylene fraction.
    Type: Grant
    Filed: September 1, 1994
    Date of Patent: May 16, 2000
    Assignee: Huntsman ICI Chemicals LLC
    Inventors: Michael Warren Peters, Yu-Hwa Edward Sheu
  • Patent number: 6017615
    Abstract: Multi-layer film products comprising an inner or core layer made from polyolefin polymers produced by polymerizing an .alpha.-olefin in the presence of a catalyst including: a pro-catalyst having a magnesium halide; an aluminum halide; a tetravalent titanium halide, ;an electron donor; and a silane having the formula R.sub.1 R.sub.2 Si(OR.sub.3)(OR.sub.4), wherein R.sub.1 and R.sub.2 are each an H, C.sub.1-6 alkyl, aryl, C.sub.5-12 cycloalkyl, each of which may be unsubstituted, mono- or di-substituted, and R.sub.3 and R.sub.4 are H, C.sub.1-6 alkyl, or a mono- or di-substituted C.sub.1-6 alkyl; and a co-catalyst comprising an organometallic compound, or reaction products of the pro-catalyst and the co-catalyst. The film products have excellent clarity, superior dart impact, resistance to tear and favorable sealibility characteristics.
    Type: Grant
    Filed: August 25, 1997
    Date of Patent: January 25, 2000
    Assignee: Huntsman Polymers Corporation
    Inventors: Mahendra T. Thakker, Dharmendra Jani
  • Patent number: 5977195
    Abstract: An improved process for manufacture of expandable polymer particles is provided. The continuous process disclosed produces expandable polymer pellets in a single step while eliminating many of the dangers inherent in processes of prior art employed for the same. The polymers produced herein are of uniform size, and may be molded into various articles of manufacture using existing equipment and techniques known to those skilled in the art.
    Type: Grant
    Filed: September 22, 1998
    Date of Patent: November 2, 1999
    Assignee: Huntsman Corporation
    Inventors: Thomas Orr Craig, George Bruce Klingensmith
  • Patent number: 5856588
    Abstract: Methyl tertiary butyl ether is prepared from tertiary butyl alcohol and methanol in a plural stage process by (a) reacting tertiary butyl alcohol with methanol in a primary MTBE reaction zone containing a cationic ion-exchange resin catalyst to form a primary reaction product, (b) fractionating the primary reaction product in a primary distillation zone to provide a first lighter, lower boiling distillation fraction comprising isobutylene, methanol and methyl tertiary butyl ether and a first heavier, higher boiling distillation fraction comprising methanol, tertiary butyl alcohol and water, c) contacting the first heavier distillation fraction in a second stage reactor containing a second stage acidic, fluoride-treated Y-zeolite having a silica:alumina ratio of 100:1 to 10:1 and a unit cell size of from 24.20 to 24.45 .ANG. or a fluoride-treated silicoaluminophosphate (SAPO) molecular sieve having a pore size of from 5 .ANG. to 8 .ANG., under conversion conditions including a temperature of from 20.degree.
    Type: Grant
    Filed: December 30, 1996
    Date of Patent: January 5, 1999
    Assignee: Huntsman Specialty Chemicals Corporation
    Inventors: Pei-Shing Eugene Dai, John Frederick Knifton
  • Patent number: 5830324
    Abstract: In the continuous purification of a propylene oxide feedstock contaminated with water, methanol and acetone wherein an acetone buffer is established in the column, normal distillation conditions are maintained or restored during or after an upset by continuously monitoring predetermined distillation conditions in the acetone buffer zone, and adding additional acetone to the extractive distillation column when the monitored distillation condition deviates from a predetermined value by a predetermined amount.
    Type: Grant
    Filed: October 17, 1996
    Date of Patent: November 3, 1998
    Assignee: Huntsman Specialty Chemicals Corp.
    Inventors: James Joseph Downs, Andrew Charles Hiester, Mark Elliott Taylor, Mark Allan Mueller, Michael Warren Peters, William Pleasie Nelson
  • Patent number: 5814413
    Abstract: The present multilayer coextruded polymer films, are made up of one or more layers which contain 20 to 100 percent by weight of a first polymer resin selected from the group consisting of a terpolymer of ethylene, butene and hexene produced using a metallocene single site catalyst, a copolymer of ethylene and hexene produced using a metallocene single site catalyst and a copolymer of ethylene and butene produced using a metallocene single site catalyst, ; and 0 to 80 percent of a second polymer resin selected from the group consisting of low density polyethylene, linear low density polyethylene, ultra low density polyethylene, very low density polyethylene, a terpolymer of ethylene, butene and hexene produced using a metallocene single site catalyst which is different from that used as the first polymer resin, a copolymer of ethylene and hexene produced using a metallocene single site catalyst which is different from that used as the first polymer resin, a copolymer of ethylene and butene produced using a met
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: September 29, 1998
    Assignee: Huntsman United Films Corporation
    Inventor: Fred Beerwart
  • Patent number: 5783630
    Abstract: A compound comprising a blend of polypropylene with the reaction of a functionalized polypropylene and polyether amine in which the polyetheramine is grafted into the functionalized polypropylene in a customary mixing apparatus is disclosed. The blend may include an elastomer such as EP rubber and/or a filler such as glass. A process for producing the reaction product of the functionalized polypropylene and the polyether amine by melting with polypropylene in a customary mixing apparatus is also disclosed. Blends of the present invention are advantageously useful to prepare paintable automotive body parts.
    Type: Grant
    Filed: July 7, 1995
    Date of Patent: July 21, 1998
    Assignee: Huntsman Petrochemical Corporation
    Inventors: Randall Keith Evans, Richard J. G. Dominguez, Richard J. Clark
  • Patent number: 5744652
    Abstract: Methyl tertiary butyl ether is prepared from TBA contaminated with oxygen-containing impurities by decomposing the impurities to gaseous products, by charging the thus-treated tertiary butyl alcohol and methanol to an etherification reactor to form an etherification reaction product, by distilling the etherification reaction product to provide a lower boiling fraction containing isobutylene, methanol and methyl tertiary butyl ether by charging the lower boiling fraction to a finishing reactor to react the isobutylene and methanol contained therein to from additional MTBE and by recovering MTBE from the etherification reaction product and the isobutylene conversion product.
    Type: Grant
    Filed: March 10, 1997
    Date of Patent: April 28, 1998
    Assignee: Huntsman Specialty Chemicals Corp.
    Inventors: Pei-Shing Eugene Dai, Laurence Darrel Neff, Kyle Lee Preston, Rei-Yu Judy Hwan