Patents Assigned to Equistar Chemicals, LP
  • Process for cracking heavy hydrocarbon feed
    Patent number: 8658022
    Abstract: A process for cracking a heavy hydrocarbon feed comprising a vaporization step, a hydroprocessing step, and a steam cracking step is disclosed. The heavy hydrocarbon feed is passed to a first zone of a vaporization unit to separate a first vapor stream and a first liquid stream. The first liquid stream is passed to a second zone of the vaporization unit and contacted intimately with a counter-current steam to produce a second vapor stream and a second liquid stream. The first vapor stream and the second vapor stream are cracked in the radiant section of the steam cracker to produce a cracked effluent. The second liquid stream is reacted with hydrogen in the presence of a catalyst to produce a hydroprocessed product. A liquid hydroprocessed product is fed to the vaporization unit.
    Type: Grant
    Filed: November 23, 2010
    Date of Patent: February 25, 2014
    Assignee: Equistar Chemicals, LP
    Inventors: Robert S. Bridges, Sellamuthu G. Chellappan
  • Process for cracking heavy hydrocarbon feed
    Patent number: 8658023
    Abstract: A hydrocarbon feed is passed to a first zone of a vaporization unit to separate a first vapor stream and a first liquid stream. The first liquid stream is passed to a second zone of the vaporization unit and contacted with a counter-current steam to produce a second vapor stream and a second liquid stream. The first vapor stream and the second vapor stream are cracked in the radiant section of the steam cracker to produce a cracked effluent. The second liquid stream is catalytically cracked to produce a cracked product. The cracked product is distilled to produce an overhead stream, a light cycle oil, and a heavy cycle oil. The light cycle oil is reacted with hydrogen in the presence of a catalyst to produce a hydrotreated light cycle oil. The hydrotreated light cycle oil and the overhead stream are fed to the vaporization unit.
    Type: Grant
    Filed: December 29, 2010
    Date of Patent: February 25, 2014
    Assignee: Equistar Chemicals, LP
    Inventor: Steven T. Coleman
  • Process for cracking heavy hydrocarbon feed
    Patent number: 8658019
    Abstract: A process for cracking a heavy hydrocarbon feed comprising a vaporization step, a coking step, a hydroprocessing step, and a steam cracking step is disclosed.
    Type: Grant
    Filed: November 23, 2010
    Date of Patent: February 25, 2014
    Assignee: Equistar Chemicals, LP
    Inventors: Robert S. Bridges, Sellamuthu G. Chellappan
  • POLYOLEFIN COMPOSITIONS AND ARTICLES MANUFACTURED THEREFROM
    Publication number: 20140045998
    Abstract: The present invention is a polyolefin composition, which comprises a thermoplastic olefin polymer and a polyethylene. The thermoplastic olefin polymer (TPO) comprises a polypropylene and an olefin copolymer and is present in an amount of about 10 weight percent to about 50 weight percent; the TPO has a density in the range of about 0.85 g/cm3 to about 0.92 g/cm3 and a flexural modulus of less than about 700 MPa as measured by ISO 178. The polyethylene is either a medium density polyethylene or a high density polyethylene and present in an amount of about 50 weight percent to about 90 weight percent. The polyolefin composition is useful for preparing articles of manufacture such as sheets, roofing membranes, geomembranes, soft skins, drawn tapes, drawn fibers, and drawn filaments.
    Type: Application
    Filed: August 8, 2013
    Publication date: February 13, 2014
    Applicants: Basell Poliolefine Italia, S.r.l., Equistar Chemical, LP
    Inventors: Fabio Ceccarani, Paolo Goberti
  • CONTROLLED RHEOLOGY FORMULATIONS CONTAINING HIGH MELT STRENGTH POLYPROPYLENE FOR EXTRUSION COATING
    Publication number: 20140031462
    Abstract: A process of extruding a blend of an irradiated first propylene polymer and a non-irradiated second propylene polymer, where the first propylene polymer comprises a non-phenolic stabilizer. The irradiation of the first propylene polymer extrudate is conducted in a reduced oxygen environment, and the irradiated first propylene polymer and the non-irradiated second propylene polymer are blended at a temperature below their respective melting points. The blend has a viscosity retention of 20 to 35%.
    Type: Application
    Filed: October 2, 2013
    Publication date: January 30, 2014
    Applicant: Equistar Chemicals, LP
    Inventors: Chun Lee, Dinshong Dong, Charles S. Holland, James R. Beren
  • Graft composition for improved tie layers
    Patent number: 8637159
    Abstract: Graft compositions, useful for tie-layer adhesives, are disclosed. The graft compositions comprise the reaction product of a live, grafted polyolefin and an olefin elastomer. The grafted polyolefin is first made by heating a polyolefin and an unsaturated monomer. Further reaction of the live, grafted polyolefin with an olefin elastomer provides the graft composition. Grafting efficiency is boosted dramatically by the presence of the olefin elastomer and use of the additional reaction step. The graft composition, when formulated into a tie-layer adhesive at low concentration, affords multilayer structures with good adhesion and high clarity.
    Type: Grant
    Filed: September 29, 2010
    Date of Patent: January 28, 2014
    Assignee: Equistar Chemicals, LP
    Inventor: Maged G. Botros
  • Polyethylene blends and films
    Patent number: 8637607
    Abstract: Disclosed are polyethylene blends and films. The blend comprises from 1 to 99%, based on the weight of the blend, of a medium density polyethylene (MDPE) and from 1 to 99% a polyolefin selected from the group consisting of high density polyethylene (HDPE), linear low density polyethylene (LLDPE), low density polyethylene (LDPE), polypropylene, polybutene, and mixtures thereof. The MDPE is made by high pressure, free radical polymerization and has a density within the range of greater than 0.928 to 0.940 g/cm3 and an MI2 within the range of 0.1 to 1 dg/min. The shrink films made from the blend have strong contraction force and low creep.
    Type: Grant
    Filed: July 28, 2010
    Date of Patent: January 28, 2014
    Assignee: Equistar Chemicals, LP
    Inventors: Anil W. Saraf, Stephen M. Imfeld
  • Adhesive compositions
    Patent number: 8598264
    Abstract: Adhesive compositions suitable for use as tie-layer adhesives in multi-layer films and sheets are provided. The adhesive compositions contain an olefin polymer base resin, a modified polyolefin and a paraffinic liquid hydrocarbon.
    Type: Grant
    Filed: June 21, 2012
    Date of Patent: December 3, 2013
    Assignee: Equistar Chemicals, LP
    Inventors: Chun D. Lee, Charles S. Holland
  • Controlled rheology formulations containing high melt strength polypropylene for extrusion coating
    Patent number: 8575252
    Abstract: A process of extruding a blend of an irradiated first propylene polymer and a non-irradiated second propylene polymer, where the first propylene polymer comprises a non-phenolic stabilizer. The irradiation of the first propylene polymer extrudate is conducted in a reduced oxygen environment, and the irradiated first propylene polymer and the non-irradiated second propylene polymer are blended at a temperature below their respective melting points. The blend has a viscosity retention of 20 to 35%.
    Type: Grant
    Filed: February 9, 2011
    Date of Patent: November 5, 2013
    Assignee: Equistar Chemicals, LP
    Inventors: Chun Lee, Dinshong Dong, Charles S. Holland, James R. Beren, Anthony J. De Nicola, Jr.
  • TIE LAYER ADHESIVES HAVING GRAFT COMPOSITIONS FOR BONDING TO METAL SUBSTRATES
    Publication number: 20130260064
    Abstract: Tie-layer adhesives having graft compositions for bonding to metal substrates is disclosed. The graft compositions are made up of the reaction product of a live, grafted polyolefin and an olefin elastomer. The grafted polyolefin is first made by heating a polyolefin and an unsaturated monomer. Further reaction of the live, grafted polyolefin with an olefin elastomer provides the graft composition. Grafting efficiency is boosted dramatically by the presence of the olefin elastomer and use of the additional reaction step. The graft composition, when formulated into a tie-layer adhesive provides improved bonding to metal substrates.
    Type: Application
    Filed: September 29, 2011
    Publication date: October 3, 2013
    Applicant: Equistar Chemicals LP
    Inventor: Maged G. Botros
  • Extrusion processes using high melt strength polypropylene
    Patent number: 8546504
    Abstract: The present invention relates to a process comprising extruding a blend of an first propylene polymer comprising a non-phenolic stabilizer and a non-irradiated second propylene polymer, wherein the irradiation of the first propylene polymer was conducted in a reduced oxygen environment, and the irradiated first propylene polymer and the non-irradiated second propylene polymer were blended at a temperature below the melting point of the first and second propylene polymers.
    Type: Grant
    Filed: February 9, 2011
    Date of Patent: October 1, 2013
    Assignee: Equistar Chemicals, LP
    Inventors: Chun Lee, Dinshong Dong, Charles S. Holland, James R. Beren, Anthony J. De Nicola, Jr., Sameer D. Mehta, Vu A. Dang, Richard J. Fezza
  • BARRIER PROPERTIES OF SUBSTANTIALLY LINEAR HDPE FILM WITH NUCLEATING AGENTS
    Publication number: 20130225742
    Abstract: Disclosed is a method for improving the barrier properties of polyethylene films The method comprises mixing a substantially linear, high density polyethylene with a nucleating agent and converting the mixture into a film The film made by the method of the invention has at least a 15% improvement on the water vapor barrier property and/or in the oxygen barrier property compared with the control film made from the same substantially linear, high density polyethylene but does not contain the nucleating agent.
    Type: Application
    Filed: April 3, 2013
    Publication date: August 29, 2013
    Applicant: Equistar Chemicals, LP
    Inventors: JEFFREY S. BORKE, Douglas C. McFaddin, Stephen M. Imfeld
  • PROPYLENE PRODUCTION PROCESS
    Publication number: 20130172647
    Abstract: Processes and systems for forming propylene are described herein. The processes generally include reacting a metathesis feed stream including at least 95 wt. % 2-butene with ethylene in the presence of a metathesis catalyst to form a metathesis product stream including propylene, and recovering propylene from the process.
    Type: Application
    Filed: February 22, 2013
    Publication date: July 4, 2013
    Applicants: Equistar Chemicals, LP, Lyondell Chemical Technology, L.P.
    Inventors: Steven T. Coleman, Gary A. Sawyer, Robert S. Bridges, Shaotian Wang, Lawrence M. Candela
  • Polyolefin resin blends for crack-resistant pipe
    Patent number: 8475898
    Abstract: Resin blends useful for pipe and blow-molded articles are disclosed. The blends comprise a low-molecular-weight, high-density polyethylene and a high-molecular-weight, low-density ethylene copolymer. The high-molecular-weight component is made with a bridged indenoindolyl Group 4 metal complex having open architecture. Blends of the invention uniquely have high molecular weight (Mw>200,000) and low levels of long-chain branching. A quick, convenient approach for estimating levels of long-chain branching in polyethylenes from gel permeation chromatography and dynamic oscillatory rheometry (“viscosity enhancement factor”) is disclosed.
    Type: Grant
    Filed: August 29, 2007
    Date of Patent: July 2, 2013
    Assignee: Equistar Chemicals, LP
    Inventors: Shaotian Wang, Gregory G. Hlatky, Sebastian Joseph, Jean A. Merrick-Mack, Kenneth J. Klug, Wallace W. Yau
  • Preparation of polyethylene
    Patent number: 8470939
    Abstract: A process for preparing a polyethylene in a multi-stage process is described. The process comprises pre-treating a Ziegler catalyst in a first stage in the presence of a 1-olefin/ethylene mixture or a 1-olefin to produce a LLDPE or VLDPE, which have the characteristics of a polymer prepared with a single-site catalyst, e.g. high levels of short-chain branching that are uniformly distributed. The contents of the first stage are then transferred to a second stage where an ethylene or an ethylene/1-olefin mixture is polymerized in the presence of the pre-treated catalyst to form a polyethylene with good processability.
    Type: Grant
    Filed: June 1, 2007
    Date of Patent: June 25, 2013
    Assignee: Equistar Chemicals, LP
    Inventors: Michael W. Lynch, Craig C. Meverden
  • Polyethylene films having high resistance to deformation or elongation
    Patent number: 8440125
    Abstract: Disclosed is a method for producing polyethylene films which have high resistance to deformation or elongation under loading in tension. The method comprises orienting in the machine direction (MD) a high density polyethylene film at a draw-down ratio effective to give the film an MD tensile strength at yield greater than or equal to 50,000 psi, wherein the HDPE has a density greater than 0.940 g/cm3.
    Type: Grant
    Filed: June 28, 2004
    Date of Patent: May 14, 2013
    Assignee: Equistar Chemicals, LP
    Inventor: D. Ryan Breese
  • Barrier properties of substantially linear HDPE film with nucleating agents
    Patent number: 8436085
    Abstract: Disclosed is a method for improving the barrier properties of polyethylene films. The method comprises mixing a substantially linear, high density polyethylene with a nucleating agent and converting the mixture into a film. The film made by the method of the invention has at least a 15% improvement on the water vapor barrier property and/or in the oxygen barrier property compared with the control film made from the same substantially linear, high density polyethylene but does not contain the nucleating agent.
    Type: Grant
    Filed: March 14, 2007
    Date of Patent: May 7, 2013
    Assignee: Equistar Chemicals, LP
    Inventors: Jeffrey S. Borke, Douglas C. McFaddin, Stephen M. Imfeld
  • Controlling decanter phase separation of acetic acid production process
    Patent number: 8431740
    Abstract: Disclosed is a method for controlling the decanter phase separation of an acetic acid production by methanol carbonylation. The method comprises measuring the methyl acetate concentration of the reactor mixture, calculating the density of the decanter heavy, organic phase according to the measured methyl acetate concentration, and adjusting the conditions in the reactor or in the decanter to ensure phase separation of the decanter.
    Type: Grant
    Filed: July 21, 2010
    Date of Patent: April 30, 2013
    Assignee: Equistar Chemicals, LP
    Inventors: Noel Hallinan, Michael E. Fitzpatrick, John D. Hearn, Miraj S. Patel
  • Butene copolymer-containing adhesive blends
    Patent number: 8426030
    Abstract: Compositions suitable for use as adhesives in multi-layer structures. The compositions comprise a blend of an ethylene copolymer of butene and a propylene-based polymer; a polyolefin grafted with an ethylenically unsaturated carboxylic acid or acid derivative; and an olefin polymer resin different than the ethylene copolymer of butene, the propylene-based polymer and the grafted polyolefin.
    Type: Grant
    Filed: December 1, 2009
    Date of Patent: April 23, 2013
    Assignee: Equistar Chemicals, LP
    Inventors: Maged G. Botros, Charles S. Holland
  • SYSTEMS, METHODS AND COMPOSITIONS FOR PRODUCTION OF TIE-LAYER ADHESIVES
    Publication number: 20130085221
    Abstract: A tie layer adhesive composition for multilayer structures, wherein the tie layer is composed of a graft polyolefin and a hybrid polyolefin.
    Type: Application
    Filed: September 30, 2011
    Publication date: April 4, 2013
    Applicant: Equistar Chemicals, LP
    Inventors: Maged G. BOTROS, Jeffrey C. HALEY