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
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
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
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
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
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
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
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
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
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.
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
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
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
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
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.
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
Abstract: This invention relates in part to processes for producing one or more substituted or unsubstituted 1,6-hexanediols which comprise subjecting one or more substituted or unsubstituted penten-1-ols to reductive hydroformylation in the presence of a reductive hydroformylation catalyst, e.g., a metal-organophosphorus ligand complex catalyst, to produce said one or more substituted or unsubstituted 1,6-hexanediols. The substituted and unsubstituted 1,6-hexanediols produced by the processes of this invention can undergo further reaction(s) to afford desired derivatives thereof, e.g., epsilon caprolactone. This invention also relates in part to reaction mixtures containing one or more substituted or unsubstituted 1,6-hexanediols as principal product(s) of reaction.
Type:
Grant
Filed:
April 15, 1997
Date of Patent:
February 13, 2001
Assignee:
Union Carbide Chemicals & Plastics Technology
Corporation
Inventors:
John Robert Briggs, Diane Lee Packett, David Robert Bryant, Ailene Gardner Phillips, David James Schreck, Anil Sakharam Guram, Kurt Damar Olson, Thomas Carl Eisenschmid, Eric Bruce Tjaden
Abstract: This invention relates in part to processes for producing one or more substituted or unsubstituted epsilon caprolactones and/or hydrates and/or esters thereof which comprise subjecting one or more substituted or unsubstituted penten-1-ols to carbonylation in the presence of a carbonylation catalyst, e.g., a metal-organophosphorus ligand complex catalyst, to produce said one or more substituted or unsubstituted epsilon caprolactones and/or hydrates and/or esters thereof. The substituted and unsubstituted epsilon caprolactones and/or hydrates and/or esters thereof produced by the processes of this invention can undergo further reaction(s) to afford desired derivatives thereof, e.g., epsilon caprolactam. This invention also relates in part to reaction mixtures containing one or more substituted or unsubstituted epsilon caprolactones and/or hydrates and/or esters thereof as principal product(s) of reaction.
Type:
Grant
Filed:
April 15, 1997
Date of Patent:
February 6, 2001
Assignee:
Union Carbide Chemicals & Plastics Technology
Corporation
Inventors:
Erik Bruce Tjaden, John Robert Briggs, Anil Sakharam Guram, John Michael Maher
Abstract: A process comprising contacting ethylene and at least one alpha-olefin comonomer having with a transition metal based catalyst system in two fluidized bed reactors connected in series, in the gas phase, under polymerization conditions, with the proviso that a hydrocarbyl aluminum cocatalyst is introduced into the first reactor and a different hydrocarbyl aluminum cocatalyst or no cocatalyst is introduced into the second reactor.
Type:
Grant
Filed:
March 31, 1999
Date of Patent:
February 6, 2001
Assignee:
Union Carbide Chemicals & Plastics Technology
Corporation
Inventors:
James Daniel Madden, Michael William Tilston
Abstract: There is provided a polymerization, especially a gas phase polymerization, of a sticky polymer in the presence of a catalyst under polymerization conditions using carbon black as an inert particulate material, the improvement comprises conducting said polymerization in the presence of a carbon black having a sugar-containing or sugar-derived binder, which carbon black is prepared by heating the carbon black to a temperature of at least about 280° C. for a time sufficient to decompose said sugar-containing or sugar-derived binder prior to polymerization.
Type:
Grant
Filed:
June 29, 1999
Date of Patent:
January 30, 2001
Assignee:
Union Carbide Chemicals & Plastics Technology
Corporation