Patents Assigned to Union Carbide Chemicals & Plastics Technology Corporation
  • Hydroformaylation processes
    Patent number: 5741944
    Abstract: This invention relates to a process for separating one or more phosphorus acidic compounds from a hydroformylation reaction product fluid containing said one or more phosphorus acidic compounds, a metal-organophosphite ligand complex catalyst and optionally free organophosphite ligand which process comprises treating said hydroformylation reaction product fluid with an aqueous buffer solution sufficient to neutralize and remove at least some amount of said one or more phosphorus acidic compounds from said hydroformylation reaction product fluid.
    Type: Grant
    Filed: November 26, 1996
    Date of Patent: April 21, 1998
    Assignee: Union Carbide Chemicals & Plastics Technology Corporation
    Inventors: David Robert Bryant, Tak Wai Leung, Ernst Billig, Thomas Carl Eisenschmid, James Clair Nicholson
  • Metal-ligand complex catalyzed processes
    Patent number: 5741942
    Abstract: This invention relates to a process for separating one or more phosphorus acidic compounds from a reaction product fluid containing said one or more phosphorus acidic compounds, a metal-organophosphite ligand complex catalyst and optionally free organophosphite ligand which process comprises treating said reaction product fluid with an aqueous buffer solution sufficient to neutralize and remove at least some amount of said one or more phosphorus acidic compounds from said reaction product fluid.
    Type: Grant
    Filed: November 26, 1996
    Date of Patent: April 21, 1998
    Assignee: Union Carbide Chemicals & Plastics Technology Corporation
    Inventors: David Robert Bryant, Tak Wai Leung, Ernst Billig, Thomas Carl Eisenschmid, James Clair Nicholson
  • Latex compositions having wet adhesion and other improved rheological properties and methods of producing same
    Patent number: 5739196
    Abstract: The present invention relates to latex compositions having desirable wet adhesion and other rheological properties. The processes of the invention allow for preparation of a first polymer which, upon addition of a base or neutralizing agent, substantially dissolves the first polymer, thereby providing a medium for polymerization of a second polymer, stabilizing the second polymer and acting as a dispersant for other coating composition components such as pigments, coalescents, fillers and the like.
    Type: Grant
    Filed: November 30, 1995
    Date of Patent: April 14, 1998
    Assignee: Union Carbide Chemicals & Plastics Technology Corporation
    Inventors: Richard Duane Jenkins, Victor Vincent Kaminski, III, William Charles Arney, Jr., David Robinson Bassett
  • Complex hydrophobe-containing oligomers
    Patent number: 5739378
    Abstract: This invention relates to polymers, especially emulsion polymers, and their use for the thickening of a variety of aqueous systems, to methods of thickening utilizing the polymers, to enhancement of such thickening by the addition of surfactants, solvents or non-solvents, and to other aspects including coating compositions and other aqueous systems thickened with the polymers. This invention also relates to new complex hydrophobe-containing oligomers and their use in producing the polymers of this invention.
    Type: Grant
    Filed: May 29, 1992
    Date of Patent: April 14, 1998
    Assignee: Union Carbide Chemicals & Plastics Technology Corporation
    Inventors: Richard Duane Jenkins, David Robinson Bassett, Gregory Dean Shay
  • Process for preparing optically active carboxylic acids
    Patent number: 5739385
    Abstract: This invention relates to a process for preparing optically active carboxylic acids by oxidizing an optically active aldehyde with a peracid in the presence of an amine and/or amine N-oxide catalyst selected from the group consisting of a substituted or unsubstituted alkyl amine, alkyl amine N-oxide, aromatic amine, aromatic amine N-oxide, heterocyclic amine, heterocyclic amine N-oxide and mixtures thereof, to produce the optically active carboxylic acid. Such optically active carboxylic acids have utility for example as pharmaceuticals.
    Type: Grant
    Filed: October 19, 1995
    Date of Patent: April 14, 1998
    Assignee: Union Carbide Chemicals & Plastics Technology Corporation
    Inventors: Bruce Armin Barner, Jonathan Joshua Kurland
  • Geomembranes
    Patent number: 5736237
    Abstract: A sheet such as a geomembrane consisting essentially of an extruded in situ blend of two copolymers of ethylene and one or more alpha-olefins having 3 to 8 carbon atoms, said blend having a flow index in the range of about 3 to about 100 grams per 10 minutes; a melt flow ratio in the range of about 50 to about 200; a density in the range of 0.905 to 0.943 gram per cubic centimeter; an Mw/Mn ratio in the range of about 10 to about 50; and a weight average molecular weight in the range of about 180,000 to about 465,000.
    Type: Grant
    Filed: November 25, 1996
    Date of Patent: April 7, 1998
    Assignee: Union Carbide Chemicals & Plastics Technology Corporation
    Inventors: Aaron Seung-Joon Rhee, Antonios Nicholas
  • Film extruded from an in situ blend of ethylene copolymers
    Patent number: 5736258
    Abstract: A shrink film comprising a blend of copolymers of ethylene and one or more alpha-olefins having 3 to 12 carbon atoms formed in situ, said blend having a melt index in the range of about 0.2 to about 3.5 grams per 10 minutes; a melt flow ratio in the range of about 50 to about 175; a molecular weight in the range of about 90,000 to about 225,000; a Mw/Mn ratio of at least about 8; and a density in the range of 0.910 to 0.940 gram per cubic centimeter, said shrink film being formed at a blow up ratio in the range of about 2:1 to about 6:1 and having the following properties:(i) at about 135 degrees C., a shrinkage of at least about 50 percent in the machine direction and zero or positive shrinkage in the transverse direction;(ii) melt stress is zero or positive kilopascals; and(iii) a cooled stress of at least about 0.35.times.10.sup.3 kilopascals.
    Type: Grant
    Filed: July 3, 1996
    Date of Patent: April 7, 1998
    Assignee: Union Carbide Chemicals & Plastics Technology Corporation
    Inventor: Francis H. Moy
  • Process for reducing polymer build-up in recycle lines and heat exchangers during polymerizations employing butadiene, isoprene, and/or styrene
    Patent number: 5733988
    Abstract: A method for inhibiting polymer build-up in a recycle line and a heat exchanger during a polymerization process of one or more alpha olefins, particularly sticky polymers, or of one or more diolefins such as butadiene, isoprene, styrene, or styrene and butadiene which method comprises introducing as an antifouling agent an alcohol having 1 to 20 carbon atoms, an alkyl or cycloalkyl ether having 2 to 20 carbon atoms, ammonia, an ester of an inorganic acid, a compound of a group IV element of the periodic table, alkyl and aryl amines, a sulfur-containing compound, or a mixture thereof at one or more locations in the recycle gas line in an amount sufficient to inhibit polymer buildup.
    Type: Grant
    Filed: November 1, 1996
    Date of Patent: March 31, 1998
    Assignee: Union Carbide Chemicals & Plastics Technology Corporation
    Inventors: Maria Angelica Apecetche, Bai Xinlai, Kevin Joseph Cann
  • Metal-ligand complex catalyzed processes
    Patent number: 5731472
    Abstract: This invention relates to a method of stabilizing a metal-organopolyphosphite ligand complex catalyst against deactivation in a process which comprises reacting one or more reactants in the presence of a metal-organopolyphosphite ligand complex catalyst and optionally free organopolyphosphite ligand to produce a reaction product fluid comprising one or more products, which method comprises conducting said process in the presence of one or more free heterocyclic nitrogen compounds sufficient to prevent and/or lessen deactivation of the metal-organopolyphosphite ligand complex catalyst.
    Type: Grant
    Filed: November 26, 1996
    Date of Patent: March 24, 1998
    Assignee: Union Carbide Chemicals & Plastics Technology Corporation
    Inventors: Tak Wai Leung, David Robert Bryant, Bernard Leslie Shaw
  • Metal-ligand complex catalyzed processes
    Patent number: 5731473
    Abstract: This invention relates to a process which comprises reacting one or more reactants in the presence of a metal-organophosphite ligand complex catalyst and dissolved water and optionally free organophosphite ligand to produce a reaction product fluid comprising one or more products, wherein said process is conducted in the presence of carbon dioxide in an amount sufficient not to effect substantial degradation of any said organophosphite ligand and/or substantial deactivation of said metal-organophosphite ligand complex catalyst.
    Type: Grant
    Filed: November 26, 1996
    Date of Patent: March 24, 1998
    Assignee: Union Carbide Chemicals & Plastics Technology Corporation
    Inventors: David Robert Bryant, James Clair Nicholson, Donald Leroy Bunning, Thomas Carl Eisenschmid, Donald Lee Morrison
  • Aoueous vinyl polymer dispersions
    Patent number: 5731368
    Abstract: Aqueous dispersions of vinyl polymers are disclosed. The polymers are copolymers of a vinyl halide, a vinyl ester, e.g., vinyl acetate, and a poly(alkylene glycol)-based macromonomer, e.g., poly(ethylene glycol)-maleic anhydride. Also disclosed are processes for the preparation of the aqueous dispersions which comprise forming the copolymer by solution polymerization, converting the dissolved polymer into an aqueous dispersion and removing the solvent from the aqueous dispersion.
    Type: Grant
    Filed: September 1, 1995
    Date of Patent: March 24, 1998
    Assignee: Union Carbide Chemicals & Plastics Technology Corporation
    Inventors: James Preston Stanley, Eric Jay Nagel, Richard Jude Burns, Walter Paul Mayer, Steven Nicholas Semerak
  • Screen packs for reducing gels in polypropylene copolymers
    Patent number: 5730885
    Abstract: The present invention teaches a method for reducing the number and size of polymeric gels in a polypropylene blend by filtering the blend through multiple filter screens during the extrusion of the blend.
    Type: Grant
    Filed: December 3, 1996
    Date of Patent: March 24, 1998
    Assignee: Union Carbide Chemicals & Plastics Technology Corporation
    Inventors: Theodore Robert Blakeslee, deceased, David Khanin, Richard H. Bozenbury, Jr.
  • Termination of gas phase polymerizations of conjugated dienes, vinyl-substituted aromatic compounds and mixtures thereof
    Patent number: 5731381
    Abstract: There is provided a method for terminating a gas phase polymerization of a compound selected from the group consisting of a conjugated diene, a vinyl-substituted aromatic compound, and mixtures thereof, in a polymerization vessel in the presence of a catalyst, and optionally in the presence of an inert particulate material, comprising introducing a kill agent selected from the group consisting of an alcohol having 1 to 20 carbon atoms, an alkyl or cycloalkyl monoether, ammonia, water, an alkyl or aryl amine, and mixtures thereof.
    Type: Grant
    Filed: November 1, 1996
    Date of Patent: March 24, 1998
    Assignee: Union Carbide Chemicals & Plastics Technology Corporation
    Inventors: Maria Angelica Apecetche, Kevin Joseph Cann
  • Lubricious coatings containing polymers with vinyl and carboxylic acid moieties
    Patent number: 5731087
    Abstract: Lubricious coatings comprising a binder polymer having a vinyl moiety and a carboxylic acid moiety and a hydrophilic polymer are disclosed. The coatings can be applied to a variety of substrates such as, for example, catheters, stents, dilatation balloons, guide wires, endotracheal tubes, instruments, implants and other biomedical devices and can provide exceptional lubricity and abrasion resistance. Processes for applying the lubricious coatings in either one or two coating steps are also disclosed.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: March 24, 1998
    Assignee: Union Carbide Chemicals & Plastics Technology Corporation
    Inventors: You Ling Fan, Lawrence Marlin, Lisa M. Bouldin, Isabel Maria Marino
  • Tree resistant cable
    Patent number: 5731082
    Abstract: A cable comprising one or more electrical conductors or a core of one or more electrical conductors, each conductor or core being surrounded by a layer of insulation comprising a multimodal copolymer of ethylene and one or more alpha-olefins, each alpha-olefin having 3 to 8 carbon atoms, the copolymer having a broad comonomer distribution as measured by TREF with a value for the percent of copolymer, which elutes out at a temperature of greater than 90 degrees C., of greater than about 5 percent; a WTGR value of less than about 20 percent; a melt index in the range of about 0.1 to about 30 grams per 10 minutes; and a density in the range of 0.880 to 0.950 gram per cubic centimeter, and being prepared by a low pressure process.
    Type: Grant
    Filed: June 24, 1996
    Date of Patent: March 24, 1998
    Assignee: Union Carbide Chemicals & Plastics Technology Corporation
    Inventors: Laurence Herbert Gross, Alfred Mendelsohn
  • Process using multistaged reactors
    Patent number: 5728893
    Abstract: This invention relates to a process for producing one or more products in a staged reactor having more than one reactive stage which process comprises reacting in said staged reactor one or more reactants with carbon monoxide in the presence of a metal-organophosphorus ligand complex catalyst and optionally free organophosphorus ligand to produce said one or more products, wherein said metal-organophosphorus ligand complex catalyst does not undergo substantial deactivation in the presence of solely carbon monoxide and/or effects a change in normal product selectivity of less than 0.2 percent of normal product per 1 pound per square inch of carbon monoxide partial pressure and/or effects a change in reaction rate of less than 2 percent per 1 pound per square inch of carbon monoxide partial pressure.
    Type: Grant
    Filed: November 26, 1996
    Date of Patent: March 17, 1998
    Assignee: Union Carbide Chemicals & Plastics Technology Corporation
    Inventors: Michael Carl Becker, David Robert Bryant, Donald LeRoy Bunning, James Clair Nicholson, Ernst Billig
  • Gas phase anionic polymerization of dienes and vinyl-substituted aromatic compounds
    Patent number: 5728782
    Abstract: There is provided a process comprising polymerizing a compound selected from the group consisting of a conjugated diene, a vinyl-substituted aromatic compound, and mixtures thereof in a gas phase fluidized polymerization vessel under polymerization conditions in the presence of at least one anionic initiator, optionally in the presence of an inert particulate material. A novel resin particle produced by the process is also provided.
    Type: Grant
    Filed: December 6, 1996
    Date of Patent: March 17, 1998
    Assignee: Union Carbide Chemicals & Plastics Technology Corporation
    Inventors: Monika Brady, Kevin Joseph Cann, David Joseph Dovedytis
  • Process for extrusion
    Patent number: 5728335
    Abstract: A process for the extrusion of polyethylene having a broad molecular weight distribution wherein the polyethylene is prepared in pellet form, said extrusion taking place in a pelletizing extruder having one or more zones essentially filled with polyethylene and two or more zones partially filled with polyethylene including(i) introducing the polyethylene into the extruder at a temperature sufficient to melt the polyethylene; (ii) introducing a mixture of an inert gas and oxygen into each partially filled zone wherein the mixture contains about 1 to about 21 percent by volume oxygen based on the volume of the gaseous mixture; (iii) passing the molten polyethylene through each zone at melt temperature; and (iv) extruding the polyethylene into pellets and cooling same.
    Type: Grant
    Filed: June 26, 1996
    Date of Patent: March 17, 1998
    Assignee: Union Carbide Chemicals & Plastics Technology Corporation
    Inventor: Anthony Charles Neubauer
  • Cable jacket
    Patent number: 5718974
    Abstract: A cable comprising one or more communications media or electrical conductors, or a core of two or more communications media or electrical conductors, each communications medium, electrical conductor, or core being surrounded by at least two layers, an inner insulating layer and an outer jacketing layer, is disclosed. The jacketing layer comprises an in situ blend of two copolymers of ethylene and one or more alpha-olefins having 3 to 12 carbon atoms. The blend has an Mw/Mn ratio in the range of about 8 to about 22; a melt index in the range of about 0.2 to about 3.5 grams per 10 minutes; a melt flow ratio in the range of about 55 to about 135; a molecular weight in the range of about 90,000 to about 250,000; and a density of at least 0.915 gram per cubic centimeter.
    Type: Grant
    Filed: June 24, 1996
    Date of Patent: February 17, 1998
    Assignee: Union Carbide Chemicals & Plastics Technology Corporation
    Inventor: Chester J. Kmiec
  • Method for producing coating powders catalysts and drier water-borne coatings by spraying compositions with compressed fluids
    Patent number: 5716558
    Abstract: This invention relates to methods for spraying liquid compositions containing volatile solvent by using compressed fluids, such as carbon dioxide or ethane, to form solid particulates, coating powders, and catalyst materials, which can be produced with narrow particle size distributions and can be sprayed at higher solids levels, in ambient air or with heated air applied to just the spray instead of a spray chamber. Novel catalyst supports can be produced having a beneficial morphology such as for olefin catalysis. Drier water-borne coatings can be applied to substrates by using compressed fluids to spray water-borne coating compositions having conventional water levels, thereby reducing runs and sags and shortening dry times.
    Type: Grant
    Filed: November 14, 1994
    Date of Patent: February 10, 1998
    Assignee: Union Carbide Chemicals & Plastics Technology Corporation
    Inventors: Kenneth Andrew Nielsen, John Nicholas Argyropoulos, Burkhard Eric Wagner