Recycling Monomer Patents (Class 526/68)
  • Patent number: 11549749
    Abstract: Method for the preparation of dried polymer pellets in a facility having a dryer with a first chamber and a mechanical agitator, and the facility further having a degassing silo with a second chamber, the method includes the steps of guiding a drying gas flow made from or containing a first gas mixture for drying wet polymer pellets into the first chamber, transferring the dried polymer pellets into the second chamber, guiding a second gas mixture for degassing the dried polymer pellets into the second chamber thereby transforming the second gas mixture into a third gas mixture and guiding a portion of the third gas mixture into the first chamber; and process for manufacturing LDPE pellets.
    Type: Grant
    Filed: June 21, 2018
    Date of Patent: January 10, 2023
    Assignee: Basell Polyolefine GmbH
    Inventors: Giulia Mei, Juergen Mohrbutter, Dieter Littmann, Christoph Wolf, Andre-Armand Finette, Michael Deuerling, Giuseppe Penzo
  • Patent number: 11529602
    Abstract: In an embodiment, a reactor for carrying out a melt transesterification reaction at a reactor temperature of 160 to 300° C. and a reactor pressure of 5 to 200 mbar, comprises a cylindrical tank comprising a top, a side, and a bottom, wherein the bottom is convex, extending away from the top; a stirring shaft disposed within the cylindrical tank along an axis thereof so that it is rotatable from outside of the cylindrical tank; a stirring blade extending from the stirring shaft in the cylindrical tank; a reactant solution inlet located on the bottom; and a reaction solution outlet located on the bottom. The reactor can be used for the polymerization of a polycarbonate oligomer.
    Type: Grant
    Filed: June 29, 2018
    Date of Patent: December 20, 2022
    Assignee: SABIC GLOBAL TECHNOLOGIES B.V.
    Inventors: Ignacio Vic Fernandez, Fernan Mateos Salvador, Surya Prakasa Rao Daliparthi
  • Patent number: 11485636
    Abstract: The invention provides a process for separating hydrogen from a gaseous feed stream in a polymerisation process, comprising the steps i) polymerising an olefin monomer and optionally at least one olefin comonomer, in the presence of a solvent optionally in the presence of hydrogen, so as to form a polymerisation reaction mixture comprising a polyolefin polymer, unreacted monomer(s), solvent and hydrogen; ii) separating said polyolefin polymer from said unreacted monomer(s), solvent and hydrogen; iii) feeding said unreacted monomer(s) and hydrogen to a condenser so as to form said gaseous feed stream; iv) contacting said gaseous feed stream with a hydrogen separating membrane so as to form a hydrogen-rich gaseous stream and a hydrogen-lean gaseous stream.
    Type: Grant
    Filed: February 22, 2019
    Date of Patent: November 1, 2022
    Assignee: BOREALIS AG
    Inventor: Sameer Vijay
  • Patent number: 11440983
    Abstract: A process for copolymerizing ethylene and at least one C3 to C8 alpha olefin to obtain an ethylene-C3 to C8 alpha olefin copolymer, the process comprising a) copolymerizing ethylene and at least one C3 to C8 alpha olefin in a solvent in a solution polymerization reactor to obtain an intermediate polymer solution, b) discharging an effluent stream from the intermediate polymer solution into a heat exchanger, c) setting the temperature of the effluent stream in the heat exchanger to obtain a heated effluent stream, d) feeding the heated effluent stream to a flash separation, e) separating at least a part of the ethylene-C3 to C8 alpha olefin copolymer in the flash separation, characterized by feeding an inert hydrocarbon fulfilling 90° C.<T(BP)<130° C. to the solution polymerization reactor; and/or accumulating an inert hydrocarbon fulfilling 90° C.<T(BP)<130° C. during the polymerization reaction; and/or feeding an inert hydrocarbon fulfilling 90° C.<T(BP)<130° C.
    Type: Grant
    Filed: May 22, 2018
    Date of Patent: September 13, 2022
    Assignee: Borealis AG
    Inventors: Mohammad Al-Haj Ali, Henry Sleijster
  • Patent number: 11400429
    Abstract: The present invention relates to a process for polymerizing olefin monomer(s) in a gas solids olefin polymerization reactor wherein the fluidization gas is split and returned to the reactor into the bottom zone of the reactor and directly into the dense phase formed by particles of a polymer of the olefin monomer(s) suspended in an upwards flowing stream of the fluidization gas in the middle zone of the reactor.
    Type: Grant
    Filed: October 25, 2018
    Date of Patent: August 2, 2022
    Assignee: BOREALIS AG
    Inventors: Günter Weickert, Eric-Jan Prinsen, Klaus Nyfors, Erno Elovainio, Vasileios Kanellopoulos
  • Patent number: 11345765
    Abstract: A method for recovering an unreacted ?,?-ethylenically unsaturated nitrile monomer contained in a latex of a nitrile rubber obtained by emulsion polymerizing a monomer mixture comprising an ?,?-ethylenically unsaturated nitrile monomer and a carboxyl group-containing monomer is provided. The method includes the steps of: adjusting a pH of the latex of the carboxyl group-containing nitrile rubber to 6.5 or more; decompressing the latex of the carboxyl group-containing nitrile rubber having the pH adjusted to 6.5 or more under a heating condition; and recovering a component evaporated by the decompression under the heating condition.
    Type: Grant
    Filed: March 13, 2019
    Date of Patent: May 31, 2022
    Assignee: ZEON CORPORATION
    Inventors: Tsutomu Yoshimura, Tomohito Yamanoue
  • Patent number: 11198747
    Abstract: The present disclosure relates to dual catalyst systems and processes for use thereof. The present disclosure further provides a catalyst system that is a combination of at least two hafnium metallocene catalyst compounds. The catalyst systems may be used for olefin polymerization processes. The present disclosure further provides for polymers, which can be formed by processes and catalyst systems of the present disclosure.
    Type: Grant
    Filed: May 29, 2019
    Date of Patent: December 14, 2021
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Matthew W. Holtcamp, Laughlin G. McCullough, Kevin A. Stevens, Subramaniam Kuppuswamy, Matthew S. Bedoya
  • Patent number: 11192970
    Abstract: A process including contacting one or more monomers, at least one catalyst system, and a condensing agent including propane and isobutane under polymerizable conditions to produce a polyolefin polymer is provided.
    Type: Grant
    Filed: September 7, 2017
    Date of Patent: December 7, 2021
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventor: Richard B. Pannell
  • Patent number: 11173468
    Abstract: Systems and methods for improved degassing of polymer flake are provided herein. These systems include a polymerization reactor configured to polymerize one or more olefin monomers and produce a product stream comprising solid polymer flake entrained in a fluid; a flash chamber configured to separate the solid polymer flake from the fluid and to produce a fluid stream and a concentrated stream; and a first degassing chamber configured to separate the concentrated stream by contacting the concentrated stream with a purge fluid comprising one or more light hydrocarbons to produce a partially degassed polymer flake stream and a purge fluid stream.
    Type: Grant
    Filed: July 6, 2020
    Date of Patent: November 16, 2021
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Kenneth A. Dooley, Jeffrey S. Lowell, Joseph Curren
  • Patent number: 11130276
    Abstract: The invention relates to the use of molding materials for 3-D printing, containing components A, B1, B2, and C, wherein: A:5 to 100 wt % of at least one vinyl aromatic/diene block copolymer A, containing: a) 30 to 95 wt % of at least one vinyl aromatic and b) 5 to 70 wt % of at least one diene, B1:0 to 95 wt % of at least one polymer B1 selected from the group comprising standard polystyrene, high-impact polystyrene (HIPS), styrene/acrylonitrile copolymers, ?-methylstyrene/acrylonitrile copolymers, styrene/maleic anhydride copolymers, styrene/phenylmaleimide copolymers, styrene/methylmethacrylate copolymers, styrene/acrylonitrile/maleic anhydride copolymers, styrene/acrylonitrile/phenylmaleimide copolymers, methylstyrene/acrylonitrile/methylmethacrylate copolymers, ?-methylstyrene/acrylonitrile/t-butyl methacrylate copolymers, and styrene/acrylonitrile/t-butyl methacrylate copolymers, B2:0 to 60 wt % of one or more further polymers B2 selected from: polycarbonates, polyamides, poly(meth)acrylates, polyesters,
    Type: Grant
    Filed: December 18, 2014
    Date of Patent: September 28, 2021
    Assignee: INEOS STYROLUTION GROUP GMBH
    Inventors: Norbert Niessner, Frank Eisentraeger
  • Patent number: 11078316
    Abstract: Higher throughput in aqueous addition polymerization is made possible by use of an external shell and tube heat exchanger operated in reverse mode, with coolant flowing through the tubes and polymerization mixture flowing through the shell around the tubes.
    Type: Grant
    Filed: October 4, 2017
    Date of Patent: August 3, 2021
    Assignee: WACKER CHEMIE AG
    Inventors: Bernhard Eckl, Wilhelm Kaiser
  • Patent number: 10988561
    Abstract: A method for industrial production of a butadiene-isoprene copolymer rubber having a trans-1,4-structure (TBIR) and an apparatus for implementing the method. The production method includes: pumping a predetermined amount of a butadiene and an isoprene into a polymerization reactor, and performing bulk polymerization in the presence of a catalyst to obtain TBIR; performing extrusion, devolatilization, granulation and drying on the produced TBIR, and then packaging the produced TBIR; and separating unreacted monomers by a recovery and separation device followed by separately refining the unreacted monomers, and then returning the unreacted monomers to a batching device or a storage tank. The production apparatus has a recovery and refining unit, a polymerization unit, a post-treatment unit and a utility unit. By the production apparatus and the production method industrial production of TBIR by bulk polymerization is realized.
    Type: Grant
    Filed: November 15, 2016
    Date of Patent: April 27, 2021
    Assignees: QINGDAO UNIVERSITY OF SCIENCE AND TECHNOLOGY, SHANDONG HUAJU POLYMER MATERIALS CO., LTD., CHAMBROAD CHEMICAL INDUSTRY RESEARCH INSTITUTE CO., LTD.
    Inventors: Aihua He, Yunsheng Ma, Huafeng Shao, Gang Yao, Chenguang Liu, Bo Luan, Riguo Wang
  • Patent number: 10975183
    Abstract: A process for testing a commercial polyolefin condensed mode operation on a pilot plant scale is provided. A feed stream including one or more olefin monomers and one or more inert fluids can be introduced to a fluidized bed contained within a reactor housing having a length to diameter ratio of 1.0 to 20. The one or more olefin monomers can be contacted with one or catalysts within the fluidized bed at conditions sufficient to produce a polyolefin. A cycle gas stream can be withdrawn from the housing, the cycle gas stream having a gas velocity of 1.0 ft/sec to 3.0 ft/sec and including the unreacted monomers and the inert fluids. The cycle gas stream can be compressed to a pressure above the reaction pressure within the housing. The cycle gas stream can be cooled to a temperature that is above the dew point of the cycle gas, and a portion of the compressed cycle gas stream can be removed to create a side stream of the compressed cycle gas stream.
    Type: Grant
    Filed: March 29, 2017
    Date of Patent: April 13, 2021
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Bruce J. Savatsky, Richard E. Pequeno, Brandon C. Locklear
  • Patent number: 10941227
    Abstract: The present invention concerns a process for the gas phase polymerization of at least one alpha-olefin comprising: polymerizing at least one alpha-olefin in a fluidized bed reactor with a polyolefin purging unit and a vent gas recovery system, wherein the fluidized bed reactor operates in a condensed mode or super condensed mode with a recycle stream comprising one or more alkane(s) having 3 to 5 C atoms, wherein further at least one additional alkane with 6 to 12 C atoms is added to the recycle stream in an amount so that it represents between 0.0095 mol. % and 7,0000 mol. % of the recycle stream composition introduced into the reactor.
    Type: Grant
    Filed: December 29, 2016
    Date of Patent: March 9, 2021
    Assignee: SABIC GLOBAL TECHNOLOGIES B.V.
    Inventor: Yahya Banat
  • Patent number: 10843160
    Abstract: Systems and processes for rapidly depressurizing a reactor system are disclosed. The systems and processes are particularly useful in the high pressure polymerization of ethylene.
    Type: Grant
    Filed: August 10, 2016
    Date of Patent: November 24, 2020
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Philip H. Cornelissen, Paul J. Clymans, Henri A. Lammens
  • Patent number: 10844144
    Abstract: Disclosed are methods and conditions for manufacturing a polyethylene polymer or copolymer in a liquid/liquid biphasic non-adiabatic reaction, and the compositions and articles made therefrom.
    Type: Grant
    Filed: May 17, 2018
    Date of Patent: November 24, 2020
    Assignee: NOVA Chemicals (International) S.A.
    Inventors: Stephen Brown, Yves Lacombe, Brian Molloy, Lawrence VanAsseldonk, Stephen Salomons
  • Patent number: 10822434
    Abstract: Catalyst systems including more than one metallocene catalysts and processes for using the same are provided to produce polyolefin polymers such as polyethylene polymers.
    Type: Grant
    Filed: August 30, 2018
    Date of Patent: November 3, 2020
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Matthew W. Holtcamp, Dongming Li, Ching-Tai Lue, Adriana S. Silva, David F. Sanders, Laughlin G. McCullough, Matthew S. Bedoya, Subramaniam Kuppuswamy
  • Patent number: 10759883
    Abstract: The present invention relates to a process for the continuous preparation of a polyolefin in a reactor from one or more ?-olefin monomers of which at least one is ethylene or propylene, wherein the reactor comprises a fluidized bed, an expanded section located at or near the top of the reactor, a distribution plate located at the lower part of the reactor and an inlet for a recycle stream located under the distribution plate wherein the process comprises—feeding a polymerization catalyst to the fluidized bed in the area above the distribution plate—feeding the one or more ?-olefin monomers to the reactor—withdrawing the polyolefin from the reactor—circulating fluids from the top of the reactor to the bottom of the reactor, wherein the circulating fluids are compressed using a compressor and subsequently cooled using a heat exchanger to form a cooled recycle stream comprising liquid, and wherein the cooled recycle stream is introduced into the reactor using the inlet for the recycle stream wherein a part of th
    Type: Grant
    Filed: July 27, 2016
    Date of Patent: September 1, 2020
    Assignee: SABIN GLOBAL TECHNOLOGIES B.V.
    Inventors: Yahya Banat, Ahmad Abdullah Alshaiban, Osamah Al-Humaidan
  • Patent number: 10737229
    Abstract: Provided herein is a unidirectional blow down system for a high-pressure tubular reactor with a hyper that minimizes the tube wall metal temperature during a decomposition event wherein the system prevents the reactor walls from reaching a temperature capable of causing the tube metal to austenize. Also provided are methods of designing and methods of operating a unidirectional blowdown system.
    Type: Grant
    Filed: December 2, 2016
    Date of Patent: August 11, 2020
    Assignee: NOVA Chemicals (International) S.A.
    Inventors: Teresa Yuk Woon Leung, Kamal Kamel Botros, Ross Donald Moreton, Benjamin Milton Shaw
  • Patent number: 10730032
    Abstract: Systems and methods for improved degassing of polymer flake are provided herein. These systems include a polymerization reactor configured to polymerize one or more olefin monomers and produce a product stream comprising solid polymer flake entrained in a fluid; a flash chamber configured to separate the solid polymer flake from the fluid and to produce a fluid stream and a concentrated stream; and a first degassing chamber configured to separate the concentrated stream by contacting the concentrated stream with a purge fluid comprising one or more light hydrocarbons to produce a partially degassed polymer flake stream and a purge fluid stream.
    Type: Grant
    Filed: May 16, 2018
    Date of Patent: August 4, 2020
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Kenneth A. Dooley, Jeffrey S. Lowell, Joseph Curren
  • Patent number: 10683398
    Abstract: A composition is provided that comprises at least the following: polymer particles comprising a coating on at least a portion of the total surface of the polymer particles, and wherein the coating is formed from a powder composition comprising at least one inorganic powder, and at least one organic powder selected from a metal stearate and/or a polymer powder, and wherein the weight ratio of the total amount of the inorganic powder to the total amount of the organic powder is from 3.0 to 50.0.
    Type: Grant
    Filed: September 16, 2016
    Date of Patent: June 16, 2020
    Assignee: Dow Global Technologies LLC
    Inventors: Shrikant Dhodapkar, Remi A. Trottier, Robert Bellair, Konanur Manjunath, Pradeep Jain, Michael D. Turner
  • Patent number: 10676569
    Abstract: The invention relates to a process for continuously preparing polyamide oligomers. This comprises continuous conveying of an aqueous solution of polyamide-forming monomers from a reservoir vessel into an oligomerization reactor, heating of the aqueous solution beyond a dissolution or storage temperature, the residence time of the monomer solution in the oligomerization reactor being limited and the pressure or the partial vapor pressure of the water being adjusted such that a conversion of monomers to polyamide oligomers does not exceed a maximum value and/or the polyamide oligomers formed do not phase-separate or spontaneously crystallize in solid form, and continuous discharge of the polyamide oligomers from the oligomerization reactor. A polyamide oligomer preparable by this process can be provided continuously in a mixture with water in a process for preparing a semicrystalline or amorphous, thermoplastically processible polyamide and then postcondensed to give a polyamide.
    Type: Grant
    Filed: June 11, 2014
    Date of Patent: June 9, 2020
    Assignee: BASF SE
    Inventors: Joachim Clauss, Stefan Schwiegk, Gad Kory, Christian Schmidt, Axel Wilms, Florian Richter, Ning Zhu, Silke Biedasek, Isa Alexandra Queiroz Da Fonseca, Heinrich Sack, Arnold Schneller, Achim Stammer, Volker Rauschenberger
  • Patent number: 10626195
    Abstract: A process for polymerizing ethylene to obtain an ethylene-based polymer in a plant, wherein the plant includes a reactor in fluid communication with a recycle connection, wherein the process includes a polymerization phase, a partial shutdown phase, and the steps of reducing the pressure in the reactor for entering into the partial shutdown phase from the polymerization phase; and increasing the pressure in the reactor for exiting from the partial shutdown phase and re-entering the polymerization phase.
    Type: Grant
    Filed: November 16, 2016
    Date of Patent: April 21, 2020
    Assignee: Basell Polyolefine GmbH
    Inventors: Erich Neumann, Sven Wolfram, Christoph Wolf, Juergen Mohrbutter, Dieter Littmann
  • Patent number: 10570229
    Abstract: The present invention relates to a method of preparing a styrene-based resin having a low oligomer content and a styrene-based resin prepared thereby. The preparation method according to the present invention may prepare a styrene-based resin having a reduced oligomer content by using a polymerization initiator having a 1 hour half-life temperature, which is 5° C. to 25° C. lower than a temperature during polymerization, and controlling devolatilization conditions.
    Type: Grant
    Filed: November 2, 2016
    Date of Patent: February 25, 2020
    Assignee: LG Chem, LTD.
    Inventors: Jae Bum Seo, Chang Hun Han, Dae Woo Lee, Jung Tae Park, Gyu Sun Kim
  • Patent number: 10570226
    Abstract: Processes and systems for controlling modifier concentration in an ethylene polymerization reactor are disclosed.
    Type: Grant
    Filed: July 26, 2016
    Date of Patent: February 25, 2020
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Henri A. Lammens, Frankie K. R. Verluyten
  • Patent number: 10174142
    Abstract: Polyolefin polymerization performed by contacting in a reactor an olefin monomer and optionally a comonomer with a catalyst system in the presence of induced condensing agents (ICA) and optionally hydrogen. The ICA may include two or more ICA components where the composition of the ICA (i.e., the concentration of each ICA component) may affect the polyolefin production rate. Changes to the relative concentration of the two or more ICA components may be according to ICA equivalency factors that allow for increasing the polyolefin production rate while maintain a sticking temperature, increasing polyolefin production rate while increasing the dew point approach temperature of the ICA, or a combination thereof.
    Type: Grant
    Filed: November 24, 2015
    Date of Patent: January 8, 2019
    Assignee: Univation Technologies, LLC
    Inventors: Bruce J. Savatsky, Brandon C. Locklear, R. Eric Pequeno, Abarajith S. Hari, David M. Glowczwski
  • Patent number: 10011667
    Abstract: A method for producing a polyolefin is provided. The method includes a step of feeding a polyolefin powder having a catalytic activity into a gas phase polymerization vessel in which there is a polyolefin powder and through which a gas comprising an olefin is being circulated, thereby commencing polymerization of an olefin. The following formula (1) is satisfied: 0.5<?/(?B)<24.0??(1) In formula (1), ? represents the median diameter (?m) of the catalytically active polyolefin powder to be fed into the vapor phase polymerization vessel, ? represents the median diameter (?m) of the polyolefin powder that is contained in the vapor phase polymerization vessel before the feeding of the catalytically active polyolefin powder into the vapor phase polymerization vessel, and B represents the linear gas velocity (m/sec) of the gas containing an olefin within the vapor phase polymerization vessel.
    Type: Grant
    Filed: April 10, 2017
    Date of Patent: July 3, 2018
    Assignee: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Satoshi Itoguchi, Hitoshi Shibashita
  • Patent number: 9880131
    Abstract: A system for detecting an interface between polymer-rich phase and solvent-rich phase comprising a liquid-liquid separator configured to receive a polymer solution as an inlet stream produced in a solvent-based polymerization reactor through an inlet feed, wherein the tank is configured to permit the stream to separate into a polymer rich phase and a solvent rich phase; a first sonic transponder for sending a first sonic signal from either a top or bottom of the liquid-liquid separator and for receiving a first reflected portion of the sonic signal, the reflected portion of the sonic signal created by the passage of the sonic signal through a liquid-liquid interface between the solvent rich phase and the polymer rich phase is provided.
    Type: Grant
    Filed: May 9, 2012
    Date of Patent: January 30, 2018
    Assignee: DOW GLOBAL TECHNOLOGIES LLC
    Inventors: Curvel Hypolite, Alec Y. Wang
  • Patent number: 9809659
    Abstract: A process for the preparation of polyethylene by polymerizing in a slurry ethylene and optionally one or more C3 to C10 alpha-olefins in a reactor system comprising a polymerization reactor and one or more first heat exchangers located outside the polymerization reactor where the slurry in the polymerization reactor is cooled by withdrawing slurry from the polymerization reactor, cooling the slurry in the one or more first heat exchangers and returning the cooled slurry to the polymerization reactor, wherein the one or more first heat exchangers are cooled by a first coolant having a temperature of 29° C. or higher.
    Type: Grant
    Filed: June 22, 2015
    Date of Patent: November 7, 2017
    Assignee: Basell Polyolefine GmbH
    Inventors: Giuseppe Penzo, Rodrigo Carvajal, Reinhard Kuehl, Elke Damm
  • Patent number: 9714321
    Abstract: A continuous process for manufacturing a polyester includes introducing reactant components including a terephthalic acid slurry having an ethylene glycol to terephthalic acid molar ratio of about 2 and a TiO2 slurry to an initial reactor vessel and stirring the reactant components at greater than 0 to 200 rpm to form an oligomer; transferring the oligomer, phosphoric acid, and at least one additive (carbon black, 5-sulfoisophthalic acid, 5-sulfoisophthalic acid dimethyl ester, and/or 5-sulfoisophthalic acid diglycolate) to an intermittent reactor vessel and stirring at 400 rpm to 1000 rpm to form an intermediate, wherein the oligomer, the at least one additive, and the phosphoric acid have a residence time of from 1 minute to 5 minutes in the intermittent vessel; and polymerizing the intermediate in a final reactor vessel at a temperature of 285° C. to 320° C., and in the absence of a polyethylene glycol, to obtain the polyester.
    Type: Grant
    Filed: January 23, 2013
    Date of Patent: July 25, 2017
    Assignee: RELIANCE INDUSTRIES LIMITED
    Inventors: Uday Shankar Agarwal, Ved Prakash Mishra, Krishna Srinivas Rao, Subbiah Venkatachalam, Rajiv Dixit, Ashwin Kumar Jain, Anil Krishna Kelkar
  • Patent number: 9649616
    Abstract: The continuous solid-state polymerization device of the present invention comprises: a feeder for continuously introducing a prepolymer; a horizontal reactor which is connected via a first connecting part to the feeder and receives the prepolymer from the feeder so as to subject same to solid-state polymerization, wherein the reactor itself is rotated; a stirring device which comprises a stirring shaft rotating inside the horizontal reactor, in the direction opposite to that of the rotational axis of the horizontal reactor, and comprises stirring blades joined vertically to the stirring shaft; and a chamber which is connected via a second connecting part to the horizontal reactor and, once the solid-state polymerization has been completed, receives the resulting polymer discharged from the horizontal reactor, and, here, the feeder, the horizontal reactor and the chamber are in a vacuum state.
    Type: Grant
    Filed: October 22, 2013
    Date of Patent: May 16, 2017
    Assignee: Lotte Advanced Materials Co., Ltd.
    Inventors: Sang Kyun Im, Suk Min Jun, Shin Hyo Bae, So Young Kwon, Eun Ju Lee, Young Sub Jin, Kyoung Kyun Park
  • Patent number: 9487617
    Abstract: Polyglycidyl ethers of the formula: where R, m, Q, p and Z are as defined here. Methods of forming said polyglycidyl ethers and methods of using said polyglycidyl ethers to make epoxy resin oligomers and polymers, including powder coatings.
    Type: Grant
    Filed: February 22, 2013
    Date of Patent: November 8, 2016
    Inventors: Robert E. Hefner, Jr., Erich J. Molitor
  • Patent number: 9339755
    Abstract: A process for component separation in a polymer production system, comprising (a) separating a polymerization product stream into a gas stream and a polymer stream, (b) contacting the polymer stream with a purge gas to yield a purged polymer and a spent purge gas comprising purge gas, ethylene, and ethane, (c) contacting the spent purge gas with a temperature swing adsorber contactor (TSAC) to yield a loaded TSAC, wherein at least a portion of the ethylene is adsorbed by the TSAC at a first temperature to yield TSAC-adsorbed ethylene, wherein a portion of the ethane is adsorbed by the TSAC at the first temperature to yield TSAC-adsorbed ethane, (d) heating the loaded TSAC to a second temperature to yield a regenerated TSAC, and (e) contacting the regenerated TSAC with a sweeping gas stream to yield a recovered adsorbed gas stream comprising sweeping gas, recovered ethylene and recovered ethane.
    Type: Grant
    Filed: July 9, 2015
    Date of Patent: May 17, 2016
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Lei Ji, Ai-Fu Chang
  • Patent number: 9328193
    Abstract: Disclosed herein are compositions and methods related to the hydroformylation of cyclododecatriene to form cyclododecatriene trialdehyde, and the conversion of the trialdehyde to the polyphenols of Formula 1: where R, m p and Q are as defined herein. Curable compositions comprising compounds of Formula 1, including powder coating compositions, and methods of curing the compositions are also disclosed.
    Type: Grant
    Filed: February 22, 2013
    Date of Patent: May 3, 2016
    Inventors: Erich J. Molitor, Robert E. Hefner, Jr.
  • Patent number: 9221937
    Abstract: Methods and systems for olefin polymerization are provided. The method for olefin polymerization can include flowing a catalyst through an injection nozzle and into a fluidized bed disposed within a reactor. The method can also include flowing a feed comprising one or more monomers, one or more inert fluids, or a combination thereof through the injection nozzle and into the fluidized bed. The feed can be at a temperature greater than ambient temperature. The method can also include contacting one or more olefins with the catalyst within the fluidized bed at conditions sufficient to produce a polyolefin.
    Type: Grant
    Filed: June 19, 2013
    Date of Patent: December 29, 2015
    Assignee: Univation Technologies, LLC
    Inventors: Bruce J. Savatsky, R. Eric Pequeno, Timothy R. Lynn, F. David Hussein, Daniel P. Zilker, Jr.
  • Patent number: 9221920
    Abstract: A manufacturing system for producing polyolefin includes a polymerization reactor, a flash chamber, and a purge column. In certain embodiments, the purge column may receive a solids stream directly from the flash chamber. Further, the purge column may function as a feed tank for an extruder within an extrusion/loadout system. According to certain embodiments, the manufacturing system may be configured to consume less than 445 kilowatt-hours of energy per metric ton of polyolefin produced based on consumption of electricity, steam, and fuel gas.
    Type: Grant
    Filed: May 23, 2014
    Date of Patent: December 29, 2015
    Assignee: Chevron Philips Chemical Company LP
    Inventors: Robert R. McElvain, John D. Hottovy, Ralph W. Romig, Donald W. Verser, David H. Burns, John H. Tait, Richard Peacock, James E. Hein, Scott E. Kufeld, Carl W. Fenderson, Anurag Gupta, Dale A. Zellers
  • Patent number: 9181357
    Abstract: The invention describes a process for the production of EP(D)M in solution in a stirred reactor (CSTR) in which the reaction bath is kept in a boiling condition at a temperature of between 40 and 60° C. and at a pressure of between 0.6 and 1.3 MPa, and in which from 40% to 80% of the reaction heat is removed by boiling the reaction bath and the remaining reaction heat is removed by subcooling the fluids recycled to the reactor. The reactor is provided with a stirring system with three impellers, a device for distribution of the recycled fluids at the bottom of the reactor and a gamma ray level control device.
    Type: Grant
    Filed: May 15, 2012
    Date of Patent: November 10, 2015
    Assignee: FASTECH S.r.L.
    Inventor: Gabriele Omicini
  • Patent number: 9139673
    Abstract: Process for the introduction of liquid feeds to a polymerization process, and in particular for the introduction of a fresh feed selected from fresh comonomer and fresh inert hydrocarbon to a polymerization reactor. The process includes passing the fresh feed and a process stream containing a first component selected from hydrogen, nitrogen and methane and a second component which is a monomer to a separator at a pressure of 0.4 MPa (4 bar) or less to produce a first stream containing the majority of the first component and a second stream containing the majority of the fresh feed and the majority of the second component, and passing the second stream to the polymerization reactor.
    Type: Grant
    Filed: March 7, 2013
    Date of Patent: September 22, 2015
    Assignee: INEOS EUROPE AG
    Inventors: Daniel Marissal, Philip Van Breuseghem, Brent R. Walworth
  • Patent number: 9126878
    Abstract: A process for component separation in a polymer production system, comprising (a) separating a polymerization product stream into a gas stream and a polymer stream, (b) contacting the polymer stream with a purge gas to yield a purged polymer and a spent purge gas comprising purge gas, ethylene, and ethane, (c) contacting the spent purge gas with a temperature swing adsorber contactor (TSAC) to yield a loaded TSAC, wherein at least a portion of the ethylene is adsorbed by the TSAC at a first temperature to yield TSAC-adsorbed ethylene, wherein a portion of the ethane is adsorbed by the TSAC at the first temperature to yield TSAC-adsorbed ethane, (d) heating the loaded TSAC to a second temperature to yield a regenerated TSAC, and (e) contacting the regenerated TSAC with a sweeping gas stream to yield a recovered adsorbed gas stream comprising sweeping gas, recovered ethylene and recovered ethane.
    Type: Grant
    Filed: August 1, 2014
    Date of Patent: September 8, 2015
    Assignee: CHEVRON PHILLIPS CHEMICAL COMPANY LP
    Inventors: Lei Ji, Ai-Fu Chang
  • Patent number: 9120882
    Abstract: A process can include polymerizing propylene in a polymerization zone, withdrawing an effluent, and sending the effluent to a separation zone. A stream can be sent from the separation zone to a splitter to produce an overhead and a bottom stream. The overhead can be recycled to the polymerization zone, and the bottom stream can be sent to a membrane separation zone to produce a permeate and a purge. Optionally, the bottom stream can be washed in a scrubber, and an overhead of the scrubber can be sent to the membrane separation zone. The permeate can be recycled to the polymerization zone. A process can include providing a membrane separation zone to a polypropylene manufacturing facility that includes a polymerization zone, a separation zone, a splitter, and optionally a scrubber. The membrane separation zone can be fed a bottoms stream of the splitter or an overhead of the scrubber.
    Type: Grant
    Filed: January 24, 2013
    Date of Patent: September 1, 2015
    Assignee: TOTAL RESEARCH & TECHNOLOGY FELUY
    Inventors: Els Janssens, Laurent Avaullee, Marc Richet
  • Patent number: 9108147
    Abstract: A process for component separation in a polymer production system, comprising separating a polymerization product stream into a gas stream and a polymer stream, wherein the gas stream comprises ethane and unreacted ethylene, distilling the gas stream into a light hydrocarbon stream, wherein the light hydrocarbon stream comprises ethane and unreacted ethylene, contacting the light hydrocarbon stream with an absorption solvent system, wherein at least a portion of the unreacted ethylene from the light hydrocarbon stream is absorbed by the absorption solvent system, and recovering a waste gas stream from the absorption solvent system, wherein the waste gas stream comprises ethane, hydrogen, or combinations thereof.
    Type: Grant
    Filed: April 13, 2012
    Date of Patent: August 18, 2015
    Assignee: CHEVRON PHILLIPS CHEMICAL COMPANY LP
    Inventors: Scott E. Kufeld, John D. Hottovy, Ai-fu Chang
  • Patent number: 9045628
    Abstract: The invention provides a process to form an ethylene-based polymer composition, the process comprising at least the following: Step 1: polymerizing a first ethylene-based polymer in the presence of at least one molecular catalyst and a hydrocarbon chain transfer agent, and at a polymerization pressure of at least 14,000 psi; Step 2: polymerizing a second ethylene-based polymer.
    Type: Grant
    Filed: November 21, 2011
    Date of Patent: June 2, 2015
    Assignee: Dow Global Technologies LLC
    Inventors: Sean W. Ewart, Sarat Munjal, Alfred E. Vigil, Jr., Teresa P. Karjala, Mehmet Demirors
  • Publication number: 20150141591
    Abstract: The invention describes a process for the production of EP(D)M in solution in a stirred reactor (CSTR) in which the reaction bath is kept in a boiling condition at a temperature of between 40 and 60° C. and at a pressure of between 0.6 and 1.3 MPa, and in which from 40% to 80% of the reaction heat is removed by boiling the reaction bath and the remaining reaction heat is removed by subcooling the fluids recycled to the reactor. The reactor is provided with a stirring system with three impellers, a device for distribution of the recycled fluids at the bottom of the reactor and a gamma ray level control device.
    Type: Application
    Filed: May 15, 2012
    Publication date: May 21, 2015
    Applicant: FASTECH S.r.L.
    Inventor: Gabriele Omicini
  • Patent number: 9012577
    Abstract: The present invention relates to a method for preparing linear alpha-olefins by oligomerizing of ethylene in the presence of a first organic solvent and a homogenous catalyst in a reactor, characterized in that the reactor overhead is cooled by means of a refrigerant.
    Type: Grant
    Filed: June 13, 2006
    Date of Patent: April 21, 2015
    Assignees: Saudi Basic Industries Corporation, Linde AG
    Inventors: Peter Fritz, Heinz Bölt, Karl-Heinz Hoffman, Markus Köhler, Hans-Jörg Zander, Fuad Mosa, Talal Ali
  • Patent number: 9000106
    Abstract: In a process for making a copolymer, a first product stream comprising a semi-crystalline polymer and a chain terminating agent is produced in a first reactor system. The first product is provided to a second reactor system wherein a low crystallinity polymer is produced in the presence of the semi-crystalline polymer. At least a portion of the chain terminating agent is removed from the second reactor system by an in-situ process.
    Type: Grant
    Filed: March 18, 2013
    Date of Patent: April 7, 2015
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Kevin W. Lawson, Rodney S. Smith
  • Publication number: 20150073106
    Abstract: This invention relates to a blocked process for producing polymers of high and low molecular weights utilizing the same polymer separator. The separator is operated in a different mode depending on the molecular weight of the polymer being produced such that the separation system is operated in flash mode for the separation of low molecular weight polymers and operated in lower critical solution temperature (LCST) mode for the separation of high molecular weight polymers.
    Type: Application
    Filed: December 20, 2012
    Publication date: March 12, 2015
    Inventors: Chris B. Friedersdorf, Trevan D. MacArthur, Douglas A. Berti
  • Patent number: 8952126
    Abstract: A method of making a pure block copolymer includes forming a crude block copolymer; heating a solution of the crude block copolymer and alcohol; and cooling the solution to promote precipitation of a purified block copolymer, wherein an amount of impurities remaining in the purified block copolymer is from about 0 to about 5 wt % based on a total weight of the purified block copolymer; a ratio of a polydispersity index of the crude block copolymer to a polydispersity index of the purified block copolymer is from about 1.02 to about 1.25; a ratio of a molecular weight of the crude block copolymer to a molecular weight of the purified block copolymer is from about 0.75 to about 1.0; and a ratio of a number average molecular weight of the crude block copolymer to a number average molecular weight of the purified block copolymer is from about 0.65 to about 1.
    Type: Grant
    Filed: July 10, 2013
    Date of Patent: February 10, 2015
    Assignees: Xerox Corporation, National Research Council of Canada
    Inventors: Andrew J. Myles, Karen A. Moffat, Jordan H. Wosnick, Valerie M. Farrugia
  • Publication number: 20150005459
    Abstract: A process can include polymerizing propylene in a polymerization zone, withdrawing an effluent, and sending the effluent to a separation zone. A stream can be sent from the separation zone to a splitter to produce an overhead and a bottom stream. The overhead can be recycled to the polymerization zone, and the bottom stream can be sent to a membrane separation zone to produce a permeate and a purge. Optionally, the bottom stream can be washed in a scrubber, and an overhead of the scrubber can be sent to the membrane separation zone. The permeate can be recycled to the polymerization zone. A process can include providing a membrane separation zone to a polypropylene manufacturing facility that includes a polymerization zone, a separation zone, a splitter, and optionally a scrubber. The membrane separation zone cab be fed a bottoms steam of the splitter or an overhead of the scrubber.
    Type: Application
    Filed: January 24, 2013
    Publication date: January 1, 2015
    Applicant: TOTAL RESEARCH & TECHNOLOGY FELUY
    Inventors: Els Janssens, Laurent Avaullee, Marc Richet
  • Patent number: 8916660
    Abstract: Process and apparatus for recovering polymer from a gas phase reactor having a distribution plate via an outlet vessel comprising at least one apparatus for the breakup of polymeric agglomerates, the apparatus further comprising a feed pipe connecting the gas phase reactor and the outlet vessel a return gas line connecting the gas phase reactor and the outlet vessel, means for varying the flow rate through the return gas line from the outlet vessel to the gas phase reactor, and means for varying the outlet rate of polymer product from the outlet vessel.
    Type: Grant
    Filed: November 16, 2012
    Date of Patent: December 23, 2014
    Assignee: Borealis AG
    Inventors: Klaus Nyfors, Jari Aarila, Jari Hatonen, Henrik Andtsjo, Eira Johansson, Mikko Lylykangas
  • Patent number: 8916659
    Abstract: Provided are processes and apparatuses for continuous solution polymerization which can mitigate fouling during the production of propylene-based polymers.
    Type: Grant
    Filed: October 31, 2013
    Date of Patent: December 23, 2014
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Quintin P. Costin, Periagaram S. Ravishankar