Abstract: A method for operating an acetylene hydrogenation unit of a steam cracking system that integrates a fluidized catalytic dehydrogenation (FCDh) effluent from a fluidized catalytic dehydrogenation (FCDh) system may include separating a cracked gas from the steam cracking system into at least a hydrogenation feed comprising at least acetylene, CO, and hydrogen, introducing the FCDh effluent to the separation system, combining the FCDh effluent with the cracked gas upstream of the separation system, or both. The method may include hydrogenating acetylene in the hydrogenation feed. Elevated CO concentration in the hydrogenation feed due to the FCDh effluent may reduce a reaction rate of acetylene hydrogenation. The acetylene hydrogenation unit may operate at an elevated temperature relative to normal operating temperatures when the portion of the FCDh effluent is not integrated, such that a concentration of acetylene in the hydrogenated effluent is less than a threshold acetylene concentration.
Type:
Application
Filed:
June 8, 2020
Publication date:
August 11, 2022
Applicant:
Dow Global Technologies LLC
Inventors:
Hangyao Wang, Lin Luo, Yu Liu, Matthew T. Pretz, Andrzej Malek
Abstract: A method of producing a polyether alcohol that includes feeding an initiator into a reactor, feeding one or more monomers into the reactor, feeding a polymerization catalyst into the reactor, the polymerization catalyst being a Lewis acid catalyst having a general formula M(R1)1(R2)1(R3)1(R4)0 or 1, separate from feeding the initiator into the reactor, feeding a hydrogen bond acceptor additive into the reactor, the hydrogen bond acceptor additive being a C2 to C20 organic molecule having at least two hydroxyl groups, of which two hydroxyl groups are situated in 1,2-, 1,3-, or 1,4- positions on the organic molecule, and allowing the initiator to react with the one or more monomers in the presence of the polymerization catalyst and the hydrogen bond acceptor additive to form a polyether alcohol having a number average molecular weight greater than a number average molecular weight of the initiator.
Type:
Application
Filed:
February 14, 2020
Publication date:
August 11, 2022
Applicants:
Dow Global Technologies LLC, Northwestern University, Northwestern University
Inventors:
Mihir Bhagat, Charmaine Bennett, Youlong Zhu, SonBinh T. Nguyen, Linda Broadbelt, Justin M. Notestein, Matthew E. Belowich, Arjun Raghuraman, William H. Heath, Sukrit Mukhopadhyay, Heather A. Spinney, David R. Wilson
Abstract: A method for operating an integrated system for producing olefins may include contacting a hydrogenation feed with a first hydrogenation catalyst to produce a hydrogenated effluent, the hydrogenation feed including at least a portion of a first process effluent from a first olefin production process and at least a portion of a second process effluent from a second olefin production process. The hydrogenation feed may include at least hydrogen, ethylene, carbon monoxide, acetylene, methyl acetylene, and propadiene, and the first hydrogenation catalyst may be a hydrogenation catalyst having a temperature operating range of at least 40° C. The hydrogenated effluent may include methyl acetylene, propadiene, or both. The method may further include contacting at least a portion of the hydrogenated effluent with a second hydrogenation catalyst, which may cause hydrogenation of at least a portion of the methyl acetylene and propadiene to produce an MAPD hydrogenated effluent.
Type:
Application
Filed:
June 8, 2020
Publication date:
August 11, 2022
Applicant:
Dow Global Technologies LLC
Inventors:
Lin Luo, Hangyao Wang, Yu Liu, Barry B. Fish
Abstract: Embodiments of this disclosure include polymer blends comprising at least 90% by weight low density polyethylene (LDPE) polymer; and from 1% to 10% by weight ethylene acrylate copolymer. The ethylene acrylate copolymer is the polymerized reaction product of: at least 50% by wt. ethylene, based on the total weight of the monomers present in the ethylene acrylate copolymer; from 2% to 40% by wt. alkyl acrylate, based on the total weight of the monomers present in the ethylene acrylate copolymer; and from 0 to 20 wt. % of monocarboxylic acid monomer, based on the total weight of the monomers present in the ethylene acrylate copolymer.
Abstract: Embodiments relate to a method of enhanced oil recovery that includes injecting a composition including an hyperbranched polyglycerol into an injection well in a subterranean oil-bearing reservoir, the hyperbranched polyglycerol being a primary alcohol that is a reaction product of a C2 to C25 carbon alcohol and a plurality of glycidols; and displacing oil in the subterranean oil-bearing reservoir using the composition.
Type:
Application
Filed:
August 15, 2019
Publication date:
August 11, 2022
Applicant:
Dow Global Technologies LLC
Inventors:
Pramod Dhanaji Patil, Mechelle Churchfield, Peng Gao, Troy E. Knight, Wanglin Yu, Amit Katiyar, Neeraj Rohilla, Biplab Mukherjee
Abstract: Multilayer films comprising an outer layer, a sealant layer, and a tie layer positioned between the outer layer and the sealant layer are provided. The outer layer includes one or more of a first polyethylene having a density of greater than 0.945 g/cc and a polyethylene having a density of from 0.910 to 0.940 g/cc. The sealant layer includes one or more of at least one ethylene acid copolymer having from 0.1 to 10 wt % neutralized with a cation source, a polyethylene plastomer having a density below 0.910 g/cc, and an ethylene based polymer having a melting point Tm (DSC) of less than or equal to 108° C. The tie layer includes an adhesive resin selected from the group consisting of anhydride grafted ethylene based polymer, ethylene acid copolymer, and ethylene vinyl acetate.
Type:
Application
Filed:
June 24, 2020
Publication date:
August 11, 2022
Applicant:
Dow Global Technologies LLC
Inventors:
Edward L. Lee, Hwee Tatz Thai, Wu Aik Yee, Hwee Lun Goh
Abstract: The present disclosure provides a process. The process includes (i) forming a composition containing a peroxide-modified ethylene-based polymer selected from the group consisting of a peroxide-modified ethylene/a-olefin multi-block copolymer, a peroxide-modified low density polyethylene, and combinations thereof; (ii) contacting the composition with a blowing agent to form a foam composition; and (iii) forming foam beads comprising the foam composition. The present disclosure also provides a foam bead produced by said process.
Abstract: Embodiments disclosed herein include multilayer blown films having a cling layer and a release layer, wherein the cling layer comprises (i) an ethylene/alpha-olefin elastomer, and (ii) a polyethylene polymer selected from ultra-low density polyethylene, a very low density polyethylene, or combinations thereof, and the release layer comprises an ethylene/alpha-olefm resin.
Abstract: A water-based coating composition containing two parts A and B: (A) a binder component containing a waterborne epoxy dispersion, dispersed inorganic particles, and a polymeric dispersant; and (B) a hardener component, and a ratio of the component (A) and the component (B) is 90:1 to 2:1. The polymeric dispersant contains anti-agglomerating functional groups that are unreactive with oxirane groups of the epoxy dispersion.
Type:
Grant
Filed:
November 2, 2016
Date of Patent:
August 9, 2022
Assignees:
Dow Global Technologies LLC, Rohm and Haas Company
Inventors:
Rui Wang, Hu Li, Weijun Yang, Siyuan Jiang, Hui Chen, Antony K. Van Dyk, Lidaris San Miguel Rivera, Tao Wang, Tao Wang
Abstract: The present disclosure provides a foamable composition containing (A) a high density polyethylene (HDPE); (B) a low density polyethylene (LDPE); (C) a peroxide-modified HDPE; and (D) a nucleator. The present disclosure also provides a process for making a foam composition. Additionally, the present disclosure provides a foam formed from a foamable composition, and a cable with an insulation layer containing the foam.
Type:
Grant
Filed:
February 7, 2017
Date of Patent:
August 9, 2022
Assignee:
Dow Global Technologies LLC
Inventors:
Jiawen Xiong, Gangwei Sun, Mohamed Esseghir, Hongyu Chen, Jeffrey M. Cogen, Yi Zhang
Abstract: The present disclosure provides a film. In an embodiment, a multilayer film is provided and includes (A) a seal layer, (B) a barrier layer, and (C) an odor control layer. The odor control layer includes an odor control composition containing (A) from 85 wt % to 99.5 wt % of an olefin-based polymer and (B) from 15 wt % to 0.5 wt % of an odor suppressant. The odor suppressant includes a blend of: (i) an ionomer, (ii) particles of zinc oxide, and (iii) particles of copper oxide. The composition has a methyl mercaptan odor suppression value of greater than 45% as measured in accordance with ASTM D5504-12.
Type:
Grant
Filed:
August 23, 2019
Date of Patent:
August 2, 2022
Assignee:
Dow Global Technologies LLC
Inventors:
Jeffrey E. Bonekamp, Ronald Wevers, Scott T. Matteucci, Arkady L. Krasovskiy, Kefu Sun, Keran Lu
Abstract: Recovery time and/or airflow of flexible polyurethane foam is increased by including certain tackifiers in the foam formulation. The tackifiers are characterized in being incompatible with polyol or polyol mixture used to make the foam, having a viscosity of at least 10,000 centipoise at 25° C., having a glass transition temperature of at most 15° C. and being inert to other components of the foam formulation.
Type:
Grant
Filed:
March 8, 2019
Date of Patent:
August 2, 2022
Assignee:
Dow Global Technologies LLC
Inventors:
Qinghao Meng, Christopher Thiede, Kaoru Aou, Van Delk, Jillian Charon, Doug Todd, Scott Snyder
Abstract: Provided is a process for making a dispersion of composite particles comprising (i) providing a dispersion of crosslinked polyolefin particles in an aqueous medium, (ii) performing emulsion polymerization on one or more vinyl monomers in the presence of the crosslinked polyolefin particles to produce the dispersion of composite particles.
Type:
Grant
Filed:
November 29, 2018
Date of Patent:
August 2, 2022
Assignees:
Dow Global Technologies LLC, Rohm and Haas Company
Inventors:
Liang Chen, Andy Jun Li, Matthew Carter, Robert S. Moglia, Ralph C. Even, Miroslav Janco, Carlos A. Cruz, Yannick Saint-Gerard
Abstract: Embodiments are directed to a catalyst system comprising metal ligand complexes and processes for polyolefin polymerization using the metal ligand complex having the following structure:
Type:
Grant
Filed:
March 29, 2018
Date of Patent:
August 2, 2022
Assignee:
Dow Global Technologies LLC
Inventors:
Philip P. Fontaine, Hien Q. Do, Johnathan E. DeLorbe
Abstract: The present disclosure provides for an aqueous dispersion for use in coating applications. The aqueous dispersion includes an aqueous composition and a solid content of a melt blend product having an acid functionalized polypropylene base polymer, a polypropylene copolymer, an acid functionalized polypropylene wax and an acid functionalized polyolefin. The aqueous dispersion is included in a coating composition, where the coating composition includes the aqueous dispersion, a solvent, a crosslinker and a basic water composition having water and a base. The present disclosure also provides for a coated article having a substrate and a coating on the substrate, where the coating includes the coating composition of the present disclosure.
Type:
Grant
Filed:
October 21, 2019
Date of Patent:
August 2, 2022
Assignee:
Dow Global Technologies LLC
Inventors:
Houxiang Tang, David L. Malotky, Ray E. Drumright, Nicholas B. Schaffer, Cynthia Stants, Bernhard Kainz
Abstract: Processes for polymerizing polyolefins include contacting ethylene and optionally one or more (C3-C12)?-olefin in the presence of a catalyst system, wherein the catalyst system comprises a metal-ligand complex having a structure according to formula (I).
Type:
Application
Filed:
May 28, 2020
Publication date:
July 28, 2022
Applicant:
Dow Global Technologies LLC
Inventors:
Andrew M. Camelio, Brad C. Bailey, Robert D.J. Froese, Sukrit Mukhopadhyay
Abstract: The present disclosure provides a multi-layer blown film, comprising: a first skin layer and a second skin layer, where at least one of the first skin layer and the second skin layer comprises from 80 to 100 wt. % of a LLDPE, where the LLDPE has a density from 0.910 to 0.935 g/cm3; a core layer between the first skin layer and the second skin layer, where the core layer comprises from 70 to 100 wt. % of a second LLDPE having density from 0.910 to 0.935 g/cm3; and a first inner layer and a second inner layer, where at least one of the first inner layer and the second inner layer comprises from 80 to 100 wt. % of a HDPE, where the HDPE has a density from 0.940 to 0.970 g/cm3; where the multi-layer blown film has a density from 0.925 to 0.940 g/cm3 and a total thickness of 15 to 150 ?m.
Type:
Application
Filed:
June 4, 2020
Publication date:
July 28, 2022
Applicant:
Dow Global Technologies LLC
Inventors:
Lanhe Zhang, Jong Young Lee, Lori L. Kardos, Rajen M. Patel, Shaun Parkinson, Hrishikesh R. Munj, Teresa P. Karjala, Jose Eduardo Ruiz, Luis Duque, Jesus Nieto
Abstract: The present disclosure provides for a lubricant formulation and a method of forming the lubricant formulation for use in an internal combustion engine. The lubricant formulation includes a base oil and an esterified oil-soluble polyalkylene glycol (E-OSP) of Formula (I): R1 [O(R2O)n(R3O)m(C?O)R4]p wherein R1 is a linear alkyl having 1 to 18 carbon atoms, a branched alkyl having 4 to 18 carbon atoms or an aryl with 6 to 30 carbon atoms; R2O is an oxypropylene moiety derived from 1, 2-propylene oxide; R3O is an oxybutylene moiety derived from butylene oxide, wherein R2O and R3O are in a block or a random distribution; R4 is a linear alkyl with 1 to 18 carbon atoms, a branched alkyl with 4 to 18 carbon atoms or an aryl with 6 to 18 carbon atoms; n and m are each independently integers ranging from 0 to 20 wherein n+m is greater than 0, and p is an integer from 1 to 4.
Type:
Grant
Filed:
December 25, 2017
Date of Patent:
July 26, 2022
Assignee:
Dow Global Technologies LLC
Inventors:
Martin R. Greaves, Yaokun Han, Yong Zhao
Abstract: Embodiments of this disclosure include polymers comprising the polymerized product of ethylene, at least one diene comonomer, and optionally at least one C3 to C14 comonomer. The polymer comprises tri-functional long-chain branches resulting from the diene that occur at a frequency of at least 0.03 per 1000 carbon atoms of the polymer.
Type:
Application
Filed:
March 27, 2020
Publication date:
July 21, 2022
Applicant:
Dow Global Technologies LLC
Inventors:
Robert D. J. Froese, Teresita Kashyap, Oscar D. Redwine, Daniel J. Arriola, Robert L. Sammler, Cornelis F. J. Den Doelder