Abstract: The present disclosure provides a process. The process includes (i) melt blending, in an extruder, (a) a polyolefin phase and (b) an aqueous phase in the presence of (c) at least one dispersant selected from an acrylic dispersant, a poloxamer dispersant, and combinations thereof; (ii) producing an interfacial tension from 0.1 dynes/cm to 25 dynes/cm; (iii) forming a polyolefin aqueous dispersion having from 25 wt % to 90 wt % solids content of dispersion; and (iv) removing the water from the polyolefin aqueous dispersion to form a powder. The powder has a mean volume average particle size from 10 ?m to 300 ?m, a sphericity from 0.92 to 1.0, a particle size distribution from 1 to less than 2, and a particle density from 98% to 100%.
Type:
Grant
Filed:
October 22, 2018
Date of Patent:
May 11, 2021
Assignees:
Dow Global Technologies LLC, Rohm and Haas Company
Inventors:
Craig F. Gorin, Sanjib Biswas, Manesh Nadupparambil Sekharan, Thomas L. Tomczak, Robert S. Moglia, Daniel L. Dermody, Harpreet Singh, Bryan L. McCulloch
Abstract: The present invention relates to a method of dewatering an aqueous mineral suspension comprising introducing into the suspension a flocculating system comprising a poly(ethylene oxide) copolymer, in particular a copolymer of ethylene oxide and one or more epoxy or glycidyl ether functionalized hydrophobic monomer. Said poly(ethylene oxide) copolymers are useful for the treatment of suspensions of particulate material, especially waste mineral slurries. The invention is particularly suitable for the treatment of tailings and other waste material resulting from mineral processing, in particular, the processing of oil sands tailings.
Type:
Grant
Filed:
April 30, 2015
Date of Patent:
May 11, 2021
Assignee:
Dow Global Technologies LLC
Inventors:
Cole A. Witham, Matthew J. Hansen, James E. Hitt, Carol E. Mohler, Michael K. Poindexter
Abstract: A liquid composition which comprises an organic liquid diluent and at least one non-ionic cellulose ether having a viscosity of up to 2.33 mPa·s, measured as a 2 wt.-% solution in water at 20° C., is stable over an extended time period. The liquid composition is useful for preparing a solid dispersion comprising at least one active ingredient in at least one cellulose ether by spray-drying. Alternatively a solid dispersion can be produced by blending and extruding at least one active ingredient, at least one cellulose ether having a viscosity of up to 2.33 mPa·s and optionally one or more adjuvants.
Type:
Grant
Filed:
March 19, 2019
Date of Patent:
May 11, 2021
Assignee:
Dow Global Technologies LLC
Inventors:
Meinolf Brackhagen, Nicholas S. Grasman, Mark J. Hall, Steven J. Guillaudeu, Robert L. Schmitt, Matthias Knarr
Abstract: A Lewis acid polymerization catalyst has a general formula M(R1)1(R2)1(R3)1(R4)0 or 1, whereas M is boron, R1, R2, R3, and R4 are each independent, R1 is a 3,5-bis(trifluoromethyl)-substituted phenyl group, R2 is the 3,5-bis(trifluoromethyl)-substituted phenyl group or a first fluoro-substituted phenyl group selected from Set 1 structures, R3 is independently a second fluoro-substituted phenyl group selected from the Set 1 structures, and optional R4 includes a third functional group or functional polymer group.
Type:
Grant
Filed:
September 14, 2018
Date of Patent:
May 11, 2021
Assignee:
Dow Global Technologies LLC
Inventors:
Arjun Raghuraman, William H. Heath, Sukrit Mukhopadhyay, Heather A. Spinney, David R. Wilson
Abstract: Embodiments relates to a bitumen recovery process from oil sands. The oil sands may be surface mined and transported to a treatment area or may be treated directly by means of an in situ process of oil sand deposits that are located too deep for strip mining. Specifically, the present invention involves the step of treating oil sands with a composition comprising an alkanolamine and an ethylene oxide capped glycol ether.
Type:
Grant
Filed:
October 4, 2018
Date of Patent:
May 11, 2021
Assignee:
Dow Global Technologies LLC
Inventors:
Vikram Prasad, Carol Lyons Bell, Biplab Mukherjee
Abstract: The invention provides a method, and apparatus, for determining the degree of separation (DOS) of a polymer solution into a polymer-rich stream and a solvent-rich stream, said method comprising the following: adding to a liquid-liquid separation vessel the polymer solution, which comprises a polymer, a solvent and an anti-solvent; separating the polymer solution into a polymer-rich stream and a solvent-rich stream; removing at least some the polymer-rich stream from at least one outlet P on the vessel, and measuring the actual solution density of this polymer-rich stream using at least one flow meter; removing at least some of the solvent-rich stream from at least one other outlet S on the vessel, and measuring the actual density of the solvent-rich stream using at least one flow meter; and wherein the degree of separation (DOS) is determined by the following equation (Eqn.
Type:
Grant
Filed:
June 20, 2019
Date of Patent:
May 11, 2021
Assignee:
Dow Global Technologies LLC
Inventors:
Alec Y. Wang, Curvel Hypolite, Jorge Rubalcaba, Michael J. Zogg, Jr., Job D. Guzman
Abstract: In various embodiments, coated infill includes a plurality of infill granules and a preformed coating on the infill granules including a cured polyurethane product of at least one polyurethane prepolymer component and a curative component. The polyurethane prepolymer component includes a reaction product of an isocyanate component including diphenylmethane diisocyanate (MDI) and a polyol component, and has a free isocyanate content (% NCO) from 2 wt % to 12 wt %. The curative component includes water. Methods for making an artificial turf surface using the coated infill are also provided.
Type:
Application
Filed:
February 22, 2018
Publication date:
May 6, 2021
Applicant:
Dow Global Technologies LLC
Inventors:
Virginie Assemat, Andrea Benvenuti, Amber Marie Stephenson
Abstract: The invention is an improved method of making an improved carbon molecular sieve (CMS) membrane in which a precursor polymer (e.g., polyimide) is pyrolyzed at a pyrolysis temperature to form a CMS membrane that is cooled to ambient temperature (about 40° C. or 30° C. to about 20° C.). The CMS membrane is then reheated to a reheating temperature of at least 250° C. to 400° C. to form the improved CMS membrane. The CMS have a novel microstructure as determined by Raman spectroscopy. The improved CMS membranes have shown an improved combination of selectivity and permeance as well as stability for separating light hydrocarbon gas molecules such as C1 to C6 hydrocarbon gases (e.g., methane, ethane, propane, ethylene, propylene, butane, butylene).
Type:
Application
Filed:
April 3, 2019
Publication date:
May 6, 2021
Applicants:
Dow Global Technologies LLC, Georgia Tech Research Corporation
Inventors:
Liren Xu, Thomas Fitzgibbons, Mark K. Brayden, Marcos V. Martinez, William J. Koros, Wulin Qiu
Abstract: A method and a system for analyzing a physical characteristic of a film sample are described herein. The system includes a material holder system configured to hold the film sample; a dart testing system configured to test a physical characteristic of the film sample; and a moving system configured to move the held film sample to be analyzed or tested between stations. The moving system is configured to move the held film sample in the material holder system to the dart testing system.
Type:
Application
Filed:
April 30, 2018
Publication date:
May 6, 2021
Applicants:
Dow Global Technologies LLC, Rohm and Haas Company
Inventors:
Donald L. McCarty, II, Erick Sutanto, John Lund, Brayden E. Glad, Hitendra Singh
Abstract: The invention relates to oligomerization of olefins, such as ethylene, to higher olefins, such as a mixture of 1-hexene and 1-octene, using a catalyst system that comprises a) a source of chromium b) one or more activators and c) a phosphacycle-containing ligating compound. Additionally, the invention relates to a phosphacycle-containing ligating compound and a process for making said compound.
Type:
Application
Filed:
December 3, 2020
Publication date:
May 6, 2021
Applicant:
Dow Global Technologies LLC
Inventors:
Jerzy Klosin, Kara A. Milbrandt, Scott D. Boelter, David R. Wilson, Mari S. Rosen, Dean M. Welsh, Peter M. Margl, Kyoung Moo Koh, David M. Pearson, Rafael Huacuja
Abstract: Genetically modified isopropylmalate synthases, processes for preparing a C7-C11 2-ketoacids utilizing genetically modified isopropylmalate synthases, and microbial organisms including genetically modified isopropylmalate synthases are described. The genetically modified isopropylmalate synthases, processes for preparing a C7-C11 2-ketoacids, and microbial organisms including genetically modified isopropylmalate synthases can be particularly useful for producing corresponding Cn_1 aldehydes, alcohols, carboxylic acids, and Cn_2 alkanes both in vivo and in vitro.
Abstract: The disclosure relates to a tie resin formulation for use as a tie layer in a multilayer structure. The resin includes a first polyolefin grafted with an ethylenically unsaturated carboxylic acid, an ethylenically unsaturated acid derivative or a combination thereof, and having a density of 0.857 to 0.885 g/cm3, and 0.001 to 0.20 weight percent (wt. %) of a catalyst comprising at least one Lewis acid, where the resin includes the catalyst and up to 99.999 wt. % of the first polyolefin, where the wt. % is based on a total weight of the resin.
Type:
Application
Filed:
March 29, 2018
Publication date:
April 22, 2021
Applicant:
Dow Global Technologies LLC
Inventors:
Yong Zheng, Santosh S. Bawiskar, Brian W. Walther, Michael B. Biscoglio, Andong Liu
Abstract: The present disclosure provides for a bicomponent fiber that includes a first region formed of a condensation polymer and a second region formed from a polyethylene blend. The polyethylene blend includes (i) an ethylene-based polymer having a density of 0.920 g/cm3 to 0.970 g/cm3 and a melt index, I2, as determined by ASTM D1238 at 190° C. and 2.16 kg of 0.5 to 150 g/10 minutes; (ii) a maleic anhydride -grafted polyethylene; and (iii) an inorganic Brønsted-Lowry acid having an acid strength pKa value at 25° C. of 1 to 6.5, wherein the polyethylene blend has a 0.03 to 0.5 weight percent of grafted maleic anhydride based on the total weight of the polyethylene blend. The first region is a core region of the bicomponent fiber and the second region is a sheath region of the bicomponent fiber, where the sheath region surrounds the core region.
Type:
Application
Filed:
March 27, 2019
Publication date:
April 22, 2021
Applicant:
Dow Global Technologies LLC
Inventors:
Fabricio Arteaga Larios, Brian W. Walther, Jill M. Martin, Ronald Wevers, Robert W. Bell
Abstract: The present disclosure provides for an agrochemical emulsion with reduced spray drift that includes an emulsion pre-mix concentrate, an acrylate-based copolymer, and an aqueous based agrochemical composition. The agrochemical emulsion includes 0.05 to 5 weight percent (wt %) of the emulsion pre-mix concentrate, 0.05 to 5 wt. % of the acrylate-based copolymer and 90 to 99.9 wt. % of the aqueous based agrochemical composition. The emulsion pre-mix concentrate includes 40 to 70 wt. % of an alkylene glycol ether, 10 to 40 wt. % of a vegetable-oil, and a surfactant, where the wt. % of the surfactant is 0.5 to 2 times the wt. % of the vegetable-oil wt. %, where the wt. % values are based on the total weight of the emulsion pre-mix concentrate and the wt. % of the alkylene glycol ether, the vegetable-oil and the surfactant total 100 wt. % of the emulsion pre-mix concentrate. The acrylate-based copolymer has a weight average molecular weight of 0.5 to 1.5 million.
Type:
Application
Filed:
April 23, 2019
Publication date:
April 22, 2021
Applicants:
Rohm and Haas Company, Dow Silicones Corporation, Dow Global Technologies LLC
Inventors:
Adam L. Grzesiak, Matthew D. Reichert, Christopher J. Tucker, Stephen L. Wilson, Holger Tank, Sudhakar Balijepalli, Milton H. Repollet-Pedrosa
Abstract: The invention relates to oligomerization of olefins, such as ethylene, to higher olefins, such as a mixture of 1-hexene and 1-octene, using a catalyst system that comprises a) a source of chromium b) one or more activators and c) a phosphacycle-containing ligating compound. Additionally, the invention relates to a phosphacycle-containing ligating compound and a process for making said compound.
Type:
Grant
Filed:
December 28, 2018
Date of Patent:
April 20, 2021
Assignee:
Dow Global Technologies LLC
Inventors:
Jerzy Klosin, Kara A. Milbrandt, Scott D. Boelter, David R. Wilson, Mari S. Rosen, Dean M. Welsh, Peter M. Margl, Kyoung Moo Koh, David M. Pearson, Rafael Huacuja
Abstract: The process for synthesizing a poly(amic acid) polymer or a polyimide polymer is improved by using a solvent system consisting essentially of: (A) a first component consisting essentially of at least one of a sulfoxide, e.g., DMSO, and an alkyl phosphate, e.g., triethyl phosphate, and (B) optionally, a second component consisting essentially of at least one aprotic glycol ether, e.g., dipropylene glycol dimethyl ether.
Type:
Grant
Filed:
September 28, 2016
Date of Patent:
April 20, 2021
Assignee:
Dow Global Technologies LLC
Inventors:
Eungkyu Kim, William J. Harris, Qi Jiang, Xin Jiang, Kaoru Ohba
Abstract: A method of producing an aqueous polymer composition and a method of reducing yellowing of an aqueous polymer composition and a coating made therefrom.
Type:
Grant
Filed:
December 22, 2016
Date of Patent:
April 20, 2021
Assignees:
Dow Global Technologies LLC, Rohm and Haas Company
Inventors:
Xiangting Dong, Han Liu, Junyu Chen, Qingwei Zhang, Ling Li, Alvin M. Maurice, Jintao Liu
Abstract: A free standing film is provided including: a partially hydrolyzed polyvinyl acetate; a poly(ethylene oxide); a polyalkylene glycol; a plasticizer; optionally, a poly(isobutylene-co-maleic anhydride) copolymer; and optionally an additive. Unit dose packages including the free standing film are also provided.
Type:
Grant
Filed:
March 19, 2018
Date of Patent:
April 20, 2021
Assignees:
Dow Global Technologies LLC, Rohm and Haas Company
Inventors:
Afua Sarpong Karikari, Xin Jin, Joseph Kao, An Kaga, Gyongyi Gulyas, Michael C. Mitchell
Abstract: A polymer composite comprising quantum dots; said polymer composite comprising: (a) quantum dots; (b) polymerized units of a first compound having at least one readily polymerizable vinyl group, a molecular weight from 300 to 20,000 and at least one continuous acyclic hydrocarbyl chain of at least five carbon atoms; and (c) polymerized units of a second compound having at least one readily polymerizable vinyl group and a molecular weight from 100 to 750; wherein a readily polymerizable vinyl group is part of a (meth)acrylate ester group or is attached directly to an aromatic ring, and the molecular weight of the first compound minus the molecular weight of the second compound is at least 100.
Type:
Grant
Filed:
February 20, 2017
Date of Patent:
April 20, 2021
Assignees:
Rohm and Haas Electronic Materials LLC, Dow Global Technologies LLC
Inventors:
Jessica Ye Huang, Zhifeng Bai, Liang Chen, Jake Joo, Ing-Feng Hu, James C. Taylor
Abstract: Embodiments are directed to catalyst systems comprising: a procatalyst; and a co-catalyst dissolved in a non-halogenated aprotic hydrocarbon solvent, the co-catalyst comprising: a non-coordinating borate dianion having the formula: (III) and two cations, each cation being independently chosen from a cation according to formula (I) or formula (II).
Type:
Application
Filed:
March 28, 2019
Publication date:
April 15, 2021
Applicants:
Dow Global Technologies LLC, Northwestern University
Inventors:
Tobin J. Marks, Yanshan Gao, Tracy L. Lohr, Matthew D. Christianson, Jerzy Klosin, Edmund M. Carnahan, Andrew J. Young