Patents Assigned to Plastics Technology Corporation
  • Aqueous resin compositions
    Patent number: 6242517
    Abstract: Novel water-borne resin compositions useful in architectural or industrial coatings comprising: (a) a resin (b) a coupling solvent comprising ethylene glycol pentyl ether which contains at least about 90% by weight of ethylene glycol n-pentyl ether, and (c) water.
    Type: Grant
    Filed: January 6, 1999
    Date of Patent: June 5, 2001
    Assignee: Union Carbide Chemicals & Plastics Technology Corporation
    Inventors: Scott Patrick Christensen, Brian T. Keen
  • Crosslinkable polyethylene composition
    Patent number: 6231978
    Abstract: A composition comprising: polyethylene; as a scorch inhibitor, 2,4-diphenyl-4-methyl-1-pentene; as a cure booster, 3,9-divinyl-2,4,8,10-tetra-oxaspiro[5.5]undecane; and an organic peroxide.
    Type: Grant
    Filed: March 31, 1999
    Date of Patent: May 15, 2001
    Assignee: Union Carbide Chemicals & Plastics Technology Corporation
    Inventor: Michael John Keogh
  • Catalyst composition for the polymerization of olefins
    Patent number: 6232256
    Abstract: A catalyst composition is provided, which is prepared by contacting a cycloalkadienyl compound, a transition metal amide of the formula M(NMe2)mXn, an aluminoxane, and optionally a solid support at a temperature of 0 to 100° C.
    Type: Grant
    Filed: November 5, 1999
    Date of Patent: May 15, 2001
    Assignee: Union Carbide Chemicals & Plastics Technology Corporation
    Inventors: Xinmin Yang, Walter Thomas Reichle, Frederick John Karol
  • Polyethylene crosslinkable composition
    Patent number: 6228917
    Abstract: A composition comprising: (a) polyethylene; (b) as a scorch inhibitor, 4,4′-thiobis(2-methyl-6-t-butylphenol); 2,2′ thiobis(6-t-butyl-4-methylphenol); or mixtures thereof; (c) optionally, a cure booster; and (d) an organic peroxide.
    Type: Grant
    Filed: June 16, 1998
    Date of Patent: May 8, 2001
    Assignee: Union Carbide Chemicals & Plastics Technology Corporation
    Inventor: Michael John Keogh
  • Method for the spray application of polymeric-containing liquid coating compositions using subcritical compressed fluids under choked flow spraying conditions
    Patent number: 6221435
    Abstract: Processes are disclosed for the use of subcritical compressed fluids, such as carbon dioxide or ethane, to reduce viscosity and to enhance atomization when spray applying coating compositions containing low molecular weight polymers to substrates, by using spray conditions that produce choked flow in the liquid mixture being sprayed, wherein the subcritical compressed fluid is a gas at standard conditions of 0° C. temperature and one atmosphere pressure and is miscible with the coating composition.
    Type: Grant
    Filed: November 18, 1998
    Date of Patent: April 24, 2001
    Assignee: Union Carbide Chemicals & Plastics Technology Corporation
    Inventor: Kenneth Andrew Nielsen
  • Fluidized bed reactor and polymerization process
    Patent number: 6218484
    Abstract: A continuous process for the manufacture of olefin polymers in a continuous gas phase polymerization reaction wherein monomer, after passage through the fluidized bed, is cooled to a temperature below its dew point to produce a mixture of cold gas and liquid. All or part of the cold gas is introduced into the bottom of the reactor to serve as the fluidizing gas stream for the fluidized bed. Cold liquid separated from the mixture is warmed to form a heated fluid by passing in indirect heat exchange relation with the fluidized bed and the heated fluid is then injected directly into the bed; combined with the fluidizing gas stream; sprayed on top of the bed or combined with gaseous monomer removed from the fluidized bed for cooling.
    Type: Grant
    Filed: January 29, 1999
    Date of Patent: April 17, 2001
    Assignee: Union Carbide Chemicals & Plastics Technology Corporation
    Inventors: Robert Cecil Brown, Norman Louis Balmer
  • Post-reactor process for treating polymers prepared in a gas phase polymerization in the presence of an inert particulate material
    Patent number: 6214903
    Abstract: There is provided a post-reactor process for a polymer, especially an elastomeric polymer, prepared by a gas phase polymerization in the presence of an inert particulate material comprising: introducing the polymer containing inert particulate material into a polishing vessel in the presence of a fluidizing gas under polishing conditions.
    Type: Grant
    Filed: June 16, 1998
    Date of Patent: April 10, 2001
    Assignee: Union Carbide Chemicals & Plastics Technology Corporation
    Inventors: Ronald Steven Eisinger, Fathi David Hussein, David Nunn Jones, Ronald Irvin Raether, David Merrill Rebhan, Joseph Patrick Welch, Gary Harry Williams
  • Inert particulate material passivation for single-site catalyst in EPDM production
    Patent number: 6214946
    Abstract: There is provided a process for the gas phase production of an ethylene-propylene or ethylene-propylene-diene rubber in the presence of a single site or single-site like catalyst (e.g., metallocene) catalyst system and an inert particulate material comprising pretreating the inert particulate material with trialkylaluminum (e.g., tri-isobutylaluminum) before commencing polymerization.
    Type: Grant
    Filed: May 19, 1999
    Date of Patent: April 10, 2001
    Assignee: Union Carbide Chemicals & Plastics Technology Corporation
    Inventor: Xinlai Bai
  • Manufacture of stereoregular polymers
    Patent number: 6211310
    Abstract: The present invention teaches the use of particular soluble metallocene catalysts to produce stereoregular polymers in gas phase polymerizations wherein the catalysts are fed into a particular lean zone in the reactor. The metallocene catalysts are bridged bis(substituted indenyl) compounds.
    Type: Grant
    Filed: December 4, 1998
    Date of Patent: April 3, 2001
    Assignee: Union Carbide Chemicals & Plastics Technology Corporation
    Inventors: Mark Gregory Goode, Clark Curtis Williams, Timothy Roger Lynn, Robert Converse Brady, III, Jody Michael Moffett
  • Process for the removal of gas contaminants from a product gas using polyethylene glycols
    Patent number: 6203599
    Abstract: The present invention provides a process for removing gas contaminants such as hydrogen sulfide and carbon dioxide from a product gas such as natural gas or synthesis gas. According to the invention the product gas is contacted with a solvent which includes dialkyl ethers of polyethylene glycols and water, and a high pressure recycle loop is utilized to desorb a portion the gas contaminants and co-absorbed product gas from the solvent. The solvent is provided with an amount of water sufficient to increase recovery of co-absorbed product gas while at the same time providing a reduced circulation rate requirement for the solvent and reduced re-compression and cooling requirements for the recycle gas.
    Type: Grant
    Filed: July 28, 1999
    Date of Patent: March 20, 2001
    Assignee: Union Carbide Chemicals & Plastics Technology Corporation
    Inventors: Craig Norman Schubert, William I. Echt
  • Tree resistant cable
    Patent number: 6203907
    Abstract: A composition comprising polyethylene and, for each 100 parts by weight of polyethylene, about 0.1 to about 3 parts by weight of the reaction product of (i) an aliphatic diacid anhydride or a polymer or copolymer thereof wherein the anhydride has 4 to 20 carbon atoms; and (ii) a polymer selected from the group consisting of a polycaprolactone, a polyalkylene glycol, a monoalkyl ether of a polyalkylene glycol, and a mixture of two or more of said polymers, the weight ratio of component (ii) to component (i) being in the range of about 0.05:1 to about 1:1.
    Type: Grant
    Filed: April 20, 1998
    Date of Patent: March 20, 2001
    Assignee: Union Carbide Chemicals & Plastics Technology Corporation
    Inventor: Michael John Keogh
  • Method for enhancing the toughness of cycloaliphatic epoxide-based coatings
    Patent number: 6201070
    Abstract: Methods are disclosed for enhancing the toughness, e.g., resistance to cracking upon flexation, of coatings made from cycloaliphatic epoxide derivatives wherein the cycloaliphatic epoxide derivative is a cycloaliphatic epoxide ester of a hydroxy-functional compound containing at least one branched, 1,2-alkylene oxide unit. Processes for making the cycloaliphatic epoxide derivatives and coating formulations comprising the cycloaliphatic epoxide derivatives are also disclosed.
    Type: Grant
    Filed: November 20, 1996
    Date of Patent: March 13, 2001
    Assignee: Union Carbide Chemicals & Plastics Technology Corporation
    Inventors: Naofumi Kumabe, Thomas Andrew Upshaw, Robert Francis Eaton, Bharat Kanaiyalal Patel, John Kellis Braddock
  • Form of synthetic rubber
    Patent number: 6200509
    Abstract: There is provided a method which reduces fines while maintaining the bulk handling advantages of granular or particulate elastomers such as those produced in gas phase processes and which affords continuous bulk handling of synthetic rubbers or elastomers such as those produced in solution and/or suspension processes. The method comprises (1) feeding an crumb form elastomer or a granular elastomer which contains fines along with optionally one or more filler materials to a mixer/extruder where it is masticated and melted into a compound; (2) pumping the compound through an orifice of the mixer/extruder, and (3) cutting and forming the compound into shaped pellets ranging in size from about 0.5 to 30 mm.
    Type: Grant
    Filed: June 26, 1998
    Date of Patent: March 13, 2001
    Assignee: Union Carbide Chemicals & Plastics Technology Corporation
    Inventors: Anthony Charles Neubauer, Leonard Sebastian Scarola, Benjamin Roman Rozenblat
  • Compositions containing impact copolymers made from a blend of a homopolymer phase and a rubber phase having a high ethylene content
    Patent number: 6197886
    Abstract: The present invention relates to compositions containing impact copolymer compositions that are a blend of a propylene polymer phase and a rubber phase in which the ethylene content of the rubber phase is between about 75 to about 95% by weight. The rubber content of the impact copolymer composition ranges between about 35% by weight to about 60% by weight. The crystallinity of the high ethylene-content rubber phase provides overall improvement in film properties and also balance of film tensile properties in the machine and transverse directions. Compared to traditional impact copolymer compositions having a low ethylene content-rubber phase, the inventive copolymers have significantly enhanced melting and crystallization peaks due to polyethylene-like crystallinity in the rubber phase.
    Type: Grant
    Filed: October 24, 1997
    Date of Patent: March 6, 2001
    Assignee: Union Carbide Chemicals & Plastics Technology Corporation
    Inventors: Ananda Mohan Chatterjee, James Douglas McCullough, Jr.
  • Process for drying a reactor system employing a fixed bed adsorbent
    Patent number: 6189236
    Abstract: A method of reducing the purge gas consumption, dry-down time, or both required for start-up and operation of a gas phase fluidized bed reactor system. The method involves contacting a stream of cycle gas having water and/or a polar hydrocarbon with an adsorbing material while the cycle gas is in a closed circulation loop.
    Type: Grant
    Filed: November 5, 1998
    Date of Patent: February 20, 2001
    Assignee: Union Carbide Chemicals & Plastics Technology Corporation
    Inventors: David Mason Gaines, Philip Everett Harrison, Roger Brady Painter, Bill Jack Garner
  • Polyethylene crosslinkable composition
    Patent number: 6191230
    Abstract: A masterbatch composition comprising: (a) a copolymer of ethylene and 1-octene prepared with a metallocene catalyst; (b) as a scorch inhibitor, a substituted hydroquinone; 4,4′-thiobis(2-methyl-6-t-butylphenol); 4,4′-thiobis(2-t-butyl-5-methylphenol); or mixtures thereof; (c) as a cure booster, triallyl trimellitate; 3,9-divinyl-2,4,8,10-tetra-oxaspiro[5.5]undecane; triallylcyanurate; triallyl isocyanurate; or mixtures thereof; and (d) an organic peroxide.
    Type: Grant
    Filed: July 22, 1999
    Date of Patent: February 20, 2001
    Assignee: Union Carbide Chemicals & Plastics Technology Corporation
    Inventors: Michael John Keogh, Jinder Jow
  • Processes for producing unsaturated alcohols
    Patent number: 6191324
    Abstract: This invention relates in part to processes for producing one or more substituted or unsubstituted unsaturated alcohols which comprise reacting one or more substituted or unsubstituted alkadienes with carbon monoxide and hydrogen in the presence of a metal-ligand complex catalyst and a promoter and optionally free ligand to produce said one or more substituted or unsubstituted unsaturated alcohols. The substituted and unsubstituted unsaturated alcohols produced by the processes of this invention can undergo further reaction(s) to afford desired derivatives thereof. This invention also relates in part to reaction mixtures containing one or more substituted or unsubstituted unsaturated alcohols as principal product(s) of reaction.
    Type: Grant
    Filed: April 15, 1997
    Date of Patent: February 20, 2001
    Assignee: Union Carbide Chemicals & Plastics Technology Corporation
    Inventors: Anil Sakharam Guram, John Robert Briggs, Kurt Damar Olson, Thomas Carl Eisenschmid, Diane Lee Packett, Erik Bruce Tjaden
  • Polyethylene crosslinkable composition
    Patent number: 6187847
    Abstract: A composition comprising: (a) polyethylene; (b) as a scorch inhibitor, [1,3,5-tris(4-tert-butyl-3-hydroxy-2,6-dimethylbenzyl)-1,3,5-triazine-2,4,6-(1H,3H,5H)-trione]; and (c) an organic peroxide.
    Type: Grant
    Filed: July 22, 1999
    Date of Patent: February 13, 2001
    Assignee: Union Carbide Chemicals & Plastics Technology Corporation
    Inventors: Jeffrey Morris Cogen, Laurence Herbert Gross, Michael John Keogh, Joseph Anthony Obal
  • Processes for the manufacture of acrolein derivatives
    Patent number: 6187963
    Abstract: Processes are disclosed for the conversion of propylene to an acrolein derivative by converting propylene to acrolein and converting acrolein to the acrolein derivative. The processes utilize oxygen and recycle propane to the acrolein reactor. Process feeds can comprise, propane, propylene or mixtures thereof. The presence of propane in the propylene-to-acrolein reaction can enhance the efficiency of the processes.
    Type: Grant
    Filed: October 9, 1998
    Date of Patent: February 13, 2001
    Assignee: Union Carbide Chemicals & Plastics Technology Corporation
    Inventors: William George Etzkorn, Richard A. Galley, Thomas E. Snead, Jonathan Lester Brockwell, Mark Anderson Young, John Michael Maher, Barbara Knight Warren
  • Staged reactor process
    Patent number: 6187866
    Abstract: In a process for the in situ blending of polymers comprising contacting ethylene and one or more comonomers in two or more fluidized bed reactors with a catalyst system comprising (i) a magnesium/titanium based precursor containing an electron donor and (ii) a hydrocarbyl aluminum cocatalyst, the improvement comprising (A) increasing or decreasing the melt flow ratio and/or molecular weight of the blend by, respectively, decreasing or increasing the mole ratio of a precursor activator compound to the electron donor or (B) increasing or decreasing the bulk density of the blend by, respectively, increasing or decreasing the mole ratio of a precursor activator compound to the electron donor, both (A) and (B) subject to defined provisos including partial pre-activation of the precursor.
    Type: Grant
    Filed: June 4, 1999
    Date of Patent: February 13, 2001
    Assignee: Union Carbide Chemicals & Plastics Technology Corporation
    Inventors: Robert James Jorgensen, Stephanie Marie Upham, James Daniel Madden, William James Michie, Jr.