Patents Examined by Catherine S Branch
  • Patent number: 11028190
    Abstract: Embodiments are directed to bis- and poly-phosphaguanidine compounds, and the metal-ligand complexes formed therefrom, wherein the metal complexes can be used as procatalysts in polyolefin polymerization. Formulas (I) (II) and (III).
    Type: Grant
    Filed: September 28, 2017
    Date of Patent: June 8, 2021
    Assignee: Dow Global Technologies LLC
    Inventors: Andrew M. Camelio, Arkady L. Krasovskiy, Matthew D. Christianson, Robert D J Froese
  • Patent number: 11021555
    Abstract: A catalyst component for the polymerization of olefins, comprising Ti, Mg, halogen, an electron donor (ID) selected from the group consisting of aliphatic cyclic ethers and alkyl esters of aliphatic monocarboxylic acids and a compound of a metal selected from the group consisting of Zn and Cu, wherein the catalyst component is devoid of Zn—C or Cu—C bonds and the Mg/Ti molar ratio ranges from 4.0 to 50.0.
    Type: Grant
    Filed: July 7, 2017
    Date of Patent: June 1, 2021
    Assignee: Basell Poliolefine Italia S.r.l.
    Inventors: Tiziano Dall'Occo, Simona Guidotti, Dario Liguori, Giampiero Morini
  • Patent number: 11021551
    Abstract: Catalyst systems and solution olefin polymerization processes using a combination of titanium compounds (e.g. halides) with vanadium compounds (e.g. halides or oxyhalides) with tri-n-octyl aluminum (TNOAL) as a co-catalyst, which provides lower in situ oligomerization of olefins that are incorporated into the homopolymer. This feature provides a higher density homopolymer using TNOAL, which enhances polymer properties such as increased moisture barrier and stiffness. Multi-reactor systems and solution olefin polymerization processes comprising this catalyst system.
    Type: Grant
    Filed: August 2, 2018
    Date of Patent: June 1, 2021
    Assignee: Equistar Chemicals, LP
    Inventors: Michael W. Lynch, D. Ryan Breese, Thomas J. Schwab
  • Patent number: 11014995
    Abstract: A phthalate-free procatalyst composition is disclosed for olefin polymerization that exhibits excellent polymerization activity and response to hydrogen, and can produce a polyolefin exhibiting high stereoregularity, high melt flow rate, and desirable molecular weight distribution. The method for producing the procatalyst composition includes reaction of a magnesium support precursor with a tetravalent titanium halide and a combination of different internal electron donors. The first internal electron donor may comprise one or more substituted phenylene aromatic diester and the second internal electron donor may comprise a polyether, preferably a 1,3-diether. In one embodiment, the support precursor comprises a spherical spray crystalized MgCl2-EtOH adduct.
    Type: Grant
    Filed: September 28, 2017
    Date of Patent: May 25, 2021
    Assignee: W.R. Grace & Co.—Conn.
    Inventors: Michael J. Elder, Ronald A. Epstein, Timothy A. Boyer, Courtney S. Spain, Michael S. Miller
  • Patent number: 11014996
    Abstract: The instant invention relates to the use of titanium-based oxopolymers for preparing suitable catalysts for reactions of olefin polymerization and/or olefin and alpha-olefin copolymerization. The instant invention further discloses the synthesis of catalyst formulated from titanium-based oxopolymers, as well as its use for olefin polymerization and/or copolymerization reactions.
    Type: Grant
    Filed: May 25, 2016
    Date of Patent: May 25, 2021
    Assignee: Braskem S.A.
    Inventors: Adriano Giraldi Fisch, Maila Noeli Cardoso, Rodrigo Brambilla
  • Patent number: 11008412
    Abstract: A method of polymerizing an olefin using a combination of a Ziegler-Natta catalyst and an unsupported molecular catalyst in a same reactor at the same time to give a polyolefin product, and the polyolefin product made by the method. Also, methods of preparing the combination of (pro)catalysts.
    Type: Grant
    Filed: September 21, 2017
    Date of Patent: May 18, 2021
    Assignee: Dow Global Technologies LLC
    Inventors: Linfeng Chen, Mehmet Demirors
  • Patent number: 11008469
    Abstract: The invention discloses an anti-corrosion coating with low through-hole ratio for steel rebars. The composition of coating includes 45-70 weight percent feldspar powder, 15-30 weight percent borax, 10-20 weight percent calcium tetraborate, 5-15 weight percent fluorspar, 4-8 weight percent clay, 1-10 weight percent adhesion agent, and 1-1.5 weight percent thickener. This invention also discloses a coating method using above-mentioned anti-corrosion coating. The method includes seven steps: 1. dry mixing, 2. wet mixing, 3. pretreatment, 4. coating, 5. baking, 6. sintering, 7. cooling down at room temperature. The coating of this invention has outstanding anti-corrosion resistance, extremely high toughness, and good durability.
    Type: Grant
    Filed: March 1, 2017
    Date of Patent: May 18, 2021
    Inventors: Dongming Yan, Yi Liu, Luodong Zhang, Haibo Gao
  • Patent number: 11001650
    Abstract: Disclosed in certain embodiments is an electron donor for a polyolefin polymerization catalyst. In some embodiments, a solid catalyst component includes a metal component and the electron donor that form a catalyst on a support.
    Type: Grant
    Filed: August 11, 2016
    Date of Patent: May 11, 2021
    Inventors: Binh Thanh Nguyen, Jonas Alves Fernandes
  • Patent number: 11001651
    Abstract: The invention relates to a biaxially oriented polypropylene (BOPP) film comprising a propylene homopolymer or propylene-ethylene copolymer having an ethylene content of at most 1.0 wt % based on the propylene-ethylene copolymer having an Mw/Mn in the range from 5.0 to 12, wherein Mw stands for the weight average molecular weight and Mn stands for the number average weight and wherein Mw and Mn are measured according to ASTM D6474-12, an XS in the range from 1.0 to 6.0 wt %, wherein XS stands for the amount of xylene solubles which are measured according to ASTM D 5492-10, a melt flow rate in the range of 1 to 10 dg/min as measured according to IS01133 (2.16 kg/230° C.) and a crystal size distribution as indicated by a height/width ratio of the highest peak of the first cooling curve of at least 0.70 W/g° C. as determined by ASTM D3418-08 using a heating and cooling rate of 10° C./min.
    Type: Grant
    Filed: October 16, 2017
    Date of Patent: May 11, 2021
    Inventors: Patrick Elisabeth Luc Voets, Abderrahman Meddad, Henrica Norberta Alberta Maria Steenbakkers-Menting, Akhlaq Moman
  • Patent number: 11001667
    Abstract: In one aspect, oligomeric and polymeric species are described herein exhibiting new architectures and associated properties. In some embodiments, such species are synthesized by oligomerization or polymerization of diene monomer via cycloaddition in the presence of a transition metal complex. Oligomers described herein, for example, comprise cyclobutane units in the oligomer backbone. Similarly, a polymers described herein comprise cyclobutane units in the polymer backbone.
    Type: Grant
    Filed: January 4, 2019
    Date of Patent: May 11, 2021
    Inventors: Paul J. Chirik, C. Rose Kennedy, Sarah Tondreau
  • Patent number: 10995162
    Abstract: A continuous process for pre-contacting coordination polymerization catalyst components with each other before they are introduced into a polymerization reactor at 130 degrees Fahrenheit to 200 degrees Fahrenheit, where the activated coordination catalyst is contacted with at least one monomer to produce amorphous poly alpha olefin (APAO), the process involving blending a Ziegler-Natta pro-catalyst with a liquid carrier forming a Ziegler-Natta pro-catalyst slurry and flowing a co-catalyst mixture into the Ziegler-Natta pro-catalyst slurry continuously in a pre-contacting device, forming an activated Ziegler-Natta catalyst; continuously injecting the activated Ziegler-Natta catalyst into the heated polymerization reactor while simultaneously, and continuously, injecting propylene monomer and any other alpha-olefin monomers, and hydrogen gas for molecular weight control, initiating an exothermic reaction forming a monomer-polymer-catalyst slurry then continuously stirring the monomer-polymer-catalyst slurry for
    Type: Grant
    Filed: July 11, 2019
    Date of Patent: May 4, 2021
    Assignee: REXTAC LLC
    Inventors: Mitchell Arnold, Andres Sustic, Steve Oetting, Nick Fowler
  • Patent number: 10988557
    Abstract: A method of preparing a catalyst comprising a) contacting a titanium-containing compound, a solvating agent, and a solvent to form a solution; b) contacting the solution with a chrominated silica-support to form a pre-catalyst; and c) thermally treating the pre-catalyst by heating to a temperature of from about 400° C. to about 1000° C. for a time period of from about 1 minute to about 24 hours to form the catalyst.
    Type: Grant
    Filed: October 20, 2020
    Date of Patent: April 27, 2021
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Max P. McDaniel, Kathy S. Clear, Eric D. Schwerdtfeger, Jeremy M. Praetorius
  • 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
    Inventors: Aihua He, Yunsheng Ma, Huafeng Shao, Gang Yao, Chenguang Liu, Bo Luan, Riguo Wang
  • Patent number: 10975170
    Abstract: A solution polymerization process uses a reactor system in which a first stage is operated in a non adiabatic (cooled) manner and is connected to a second stage containing a downstream reactor that is operated adiabatically. In an embodiment, the first reactor stage includes at least one loop reactor and the second stage includes a tubular reactor. In an embodiment, the first stage is operated with a single site catalyst and at least one downstream reactor uses a Ziegler Natta catalyst.
    Type: Grant
    Filed: December 11, 2018
    Date of Patent: April 13, 2021
    Assignee: NOVA Chemicals (International) S.A.
    Inventors: Yves Lacombe, P. Scott Chisholm, Stephen Brown
  • Patent number: 10968297
    Abstract: Catalyst compositions and polymerization systems include at least one thiourea complex according to Formula (I): MQaX4-a (I) in which M is Ti, Zr, or Hf; a is 1 or 2; each group Q of the thiourea complex is a bidentate thiourea ligand bound to the metal center and having Formula (Ia), Formula (Ib), or Formula (Ic): (Formulas should be inserted here). In Formulas (Ia), (Ib), and (Ic), each group R1, R2, and R3 is independently chosen from alkyl groups or aryl groups; each group Z1 or Z2 is independently chosen from alkylene groups. If a=2, groups R1 of the two groups Q are optionally linked, or groups R3 of the two groups Q are optionally linked. Each X is covalently bonded or coordinated to the metal center and is independently chosen from alkyl groups or halides. The polymerization systems may be configured to copolymerize ethylene and ?-olefins.
    Type: Grant
    Filed: September 13, 2017
    Date of Patent: April 6, 2021
    Assignee: Dow Global Technologies LLC
    Inventors: Arkady L. Krasovskiy, Endre Szuromi
  • Patent number: 10961331
    Abstract: Disclosed herein are ethylene homopolymers generally characterized by a density of less than 0.94 g/cm3 and an inverse short chain branch distribution. These homopolymers can be further characterized by a ratio of Mw/Mn from 2 to 100, a number of short chain branches from 2 to 20 short chain branches per 1000 total carbon atoms, and wherein at least 50% of the short chain branches are methyl branches.
    Type: Grant
    Filed: December 19, 2018
    Date of Patent: March 30, 2021
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Brooke L. Small, Max P. McDaniel, Matthew F. Milner, Paul J. DesLauriers
  • Patent number: 10954327
    Abstract: A method is described for the formation of an active catalyst system for use in the in-line bulk polymerization of polydienes. The method provides a homogeneous, active catalyst system which is capable of being transported to a polymerization reactor for use without causing blockages in piping, thereby saving time and production costs. The catalyst system is formed in-line in a continuous method to avoid prolonged storage periods of the catalyst that can otherwise lead to degradation and disposal of the aged catalyst system.
    Type: Grant
    Filed: October 31, 2017
    Date of Patent: March 23, 2021
    Assignee: Bridgestone Corporation
    Inventor: Kevin M. McCauley
  • Patent number: 10941226
    Abstract: This invention relates to processes for forming hydrogen mediated saline hydride initiated anionic polymer distributions via novel polymerization conditions in which molecular hydrogen is a chain transfer agent and a Lithium Aminoalkoxide Complexed Saline Hydride (LOXSH) forms an anionic polymer chain initiating species by addition of saline hydride to an anionically polymerizable hydrocarbon monomer. This invention further relates to polystyrene compositions having greatly improved microstructures free of co-product polymer chain distributions. This invention also relates to novel hydrocarbon soluble saline hydride catalyst and reagent compositions useful in conducting the hydrogen mediated saline hydride initiated polymerizations of this invention. This invention further relates to hydrocarbon soluble lithium hydride catalysts and reagent compositions formed from dimethylaminoethanol, an alkyllithium reagent and molecular hydrogen.
    Type: Grant
    Filed: April 4, 2017
    Date of Patent: March 9, 2021
    Inventor: William J. Layman, Jr.
  • Patent number: 10927196
    Abstract: The present disclosure provides the use of quinolinyldiamido transition metal complexes, an activator and a metal hydrocarbenyl chain transfer agent, such as an aluminum vinyl-transfer agent, to produce long chain branched propylene polymers.
    Type: Grant
    Filed: July 3, 2018
    Date of Patent: February 23, 2021
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: John R. Hagadorn, Jo Ann M. Canich, Peijun Jiang, Maksim E. Shivokhin
  • Patent number: 10913831
    Abstract: A film formed from a polyethylene copolymer using a reduced chromium oxide catalyst, ethylene monomers and a co-monomer selected from butene monomers or 1-hexene, where the polyethylene copolymer has a density in the range of from about 0.935 to about 0.950 g/cm3 and an I21/I5 in a range of about 18.0 to about 30.0. The film formed from the polyethylene copolymer has a dart drop impact (g/?m) that significantly greater as compared to a film of the polyethylene copolymer formed using a silyl chromate catalyst in place of the reduced chromium oxide catalyst. A method of making such films is also provided.
    Type: Grant
    Filed: January 23, 2017
    Date of Patent: February 9, 2021
    Assignee: Univation Technologies, LLC
    Inventors: Cliff R. Mure, Dongming Li, Barbara J. Kopp, Mark G. Goode