Patents Examined by Robert C Boyle
  • Patent number: 11447583
    Abstract: The invention is generally related to a process for producing a relatively high molecular weight poly(methacrylic acid) (“PMAA”) in a water-based system. The process of the invention comprises polymerization of from about 1% to about 20% by weight of methacrylic acid in water or a water-based system in the presence of thiol compound and an azo radical initiator under controlled reaction and process conditions. A process of the invention can be easily scaled up into the pilot scale for producing large quantities of high molecular weight PMAAs. The invention is also related to high molecular weight poly(methacrylic acid)s obtained according to a process of the invention.
    Type: Grant
    Filed: April 13, 2021
    Date of Patent: September 20, 2022
    Assignee: Alcon Inc.
    Inventors: Stephan Wittmar, Thomas Schmidt, Justyna Justynska-Reimann, Claudio Hofmann
  • Patent number: 11434326
    Abstract: A method of forming a multimodal Polyalkylene Terephthalate (PAT) can include: providing a feed of a low molecular weight (LMW) PAT, the LMW PAT having a low average molecular weight; providing a feed of high molecular weight (HMW) PAT, the HMW PAT having a high average molecular weight, wherein the low average molecular weight is lower than the high average molecular weight; mixing the feed of LMW PAT with the feed of HMW PAT in a mixer to form a multimodal PAT; and providing the multimodal PAT as output. The multimodal PAT can include: a low average molecular weight of a low molecular weight (LMW) PAT; and a high average molecular weight of a high molecular weight (HMW) PAT mixed with the LMW PAT to form the multimodal PAT, wherein the multimodal PAT is devoid of talc.
    Type: Grant
    Filed: November 13, 2020
    Date of Patent: September 6, 2022
    Assignee: Octal, Inc.
    Inventors: Mohammed Razeem, Chris DeArmitt
  • Patent number: 11421053
    Abstract: A conjugated diene-based polymer catalyzed with a lanthanide rare earth element, and having high linearity and improved compounding properties, and a method for preparing the same are provided. The conjugated diene-based polymer catalyzed with a lanthanide rare earth element has high linearity, and if applied to a rubber composition, may show excellent processability, tensile strength and viscoelasticity.
    Type: Grant
    Filed: November 13, 2018
    Date of Patent: August 23, 2022
    Inventors: Su Hwa Kim, Hyo Jin Bae, Sung Ho Park, Soo Young Choi, Jeong Heon Ahn
  • Patent number: 11414509
    Abstract: A star-branched diene rubber, the process for making such a rubber and its use in high impact polystyrene (HIPS) and acrylonitrile butadiene styrene (ABS) polymers.
    Type: Grant
    Filed: July 16, 2018
    Date of Patent: August 16, 2022
    Assignee: ARLANXEO DEUTSCHLAND GMBH
    Inventors: Norbert Steinhauser, Peter Karbaum
  • Patent number: 11407848
    Abstract: A method is provided for preparing a super absorbent polymer capable of exhibiting an excellent absorption rate by including a uniform porous structure through a simple and economical process. The method includes: performing a crosslinking polymerization of a water-soluble ethylenically unsaturated monomer to form a hydrogel polymer; drying and pulverizing the hydrogel polymer; classifying the pulverized polymer into polymer particles having a particle size of at least 10 to 150 ?m, polymer particles having a particle size of 150 to 200 ?m, and polymer particles having a particle size of 200 to 850 ?m to form a base polymer powder having a particle size of 150 to 850 ?m; and surface-crosslinking the base polymer powder, wherein in the crosslinking polymerization step, the foaming polymerization proceeds in the presence of polymer particles having an average particle size of 10 to 200 ?m obtained in the classifying step and an anionic surfactant.
    Type: Grant
    Filed: October 15, 2018
    Date of Patent: August 9, 2022
    Inventors: Moo Kon Kim, Sang Gi Lee, Hye Mi Nam, Chang Hun Lee, Tae Yun Kim
  • Patent number: 11407843
    Abstract: The present invention relates to a process for preparing nitrile rubbers having reduced molecular weight by metathesis of a first nitrile rubber in the presence of specific ruthenium complex catalysts that have particular N-heterocyclic carbene ligands.
    Type: Grant
    Filed: December 5, 2018
    Date of Patent: August 9, 2022
    Assignee: ARLANXEO DEUTSCHLAND GMBH
    Inventors: Werner Obrecht, Sarah David, Hiyam Salem
  • Patent number: 11401357
    Abstract: Provided are a water-absorbent resin easily separable from a recyclable resource in recovering the recyclable resource, and an absorbent article containing an absorbent material containing the water-absorbent resin. The water-absorbent resin according to the present invention has such a structure that a polymer formed from a water-soluble ethylenically unsaturated monomer is crosslinked by using a post-crosslinking agent. The water-absorbent resin has (1) a water-retention capacity for physiological saline of 35 g/g or more, (2) a water-absorption capacity for physiological saline under a load of 4.14 kPa of 10 mL/g or more, (3) an initial gel viscosity of 3000 mPa·s or more, and (4) a gel decomposition index of 0.60 or less: gel decomposition index=B/A wherein A represents an initial gel viscosity (mPa·s), and B represents a gel viscosity after one day (mPa·s).
    Type: Grant
    Filed: October 12, 2018
    Date of Patent: August 2, 2022
    Assignee: SUMITOMO SEIKA CHEMICALS CO., LTD.
    Inventors: Maoki Hama, Kenta Kumazawa
  • Patent number: 11401360
    Abstract: The present invention relates to an amorphous polyolefinic ionomer and a process for the preparation of an amorphous polyolefinic ionomer.
    Type: Grant
    Filed: December 24, 2018
    Date of Patent: August 2, 2022
    Assignee: SABIC GLOBAL TECHNOLOGIES B.V.
    Inventors: Lidia Jasinska-Walc, Robbert Duchateau, Miloud Bouyahyi, Anton Ginzburg, Jiadong Zhu, Jakub Kruszynski, Tatani Aikaterini, Marc Tellez Nogales
  • Patent number: 11396565
    Abstract: The present invention relates to a semi-crystalline functionalized olefin copolymer composition and a process for the preparation of a semi-crystalline functionalized olefin copolymer composition.
    Type: Grant
    Filed: December 24, 2018
    Date of Patent: July 26, 2022
    Assignee: SABIC GLOBAL TECHNOLOGIES B.V.
    Inventors: Lidia Jasinska-Walc, Robbert Duchateau, Miloud Bouyahyi, Anton Ginzburg
  • Patent number: 11390726
    Abstract: The invention includes a method of bonding a perfluoroelastomer material to first surface that includes: (a) contacting a first surface with a bonding agent comprising a curable perfluoropolymer and a curing agent; (b) curing the bonding agent to form a perfluoroelastomer material that is bonded to the first surface. In the practice of such method, the bonding agent may be a solution prepared by dissolving the curable perfluoroelastomer and the curing agent in a solvent. In an embodiment of the invention, the perfluoroelastomer material formed in step (b) is a coating layer or, alternatively, the first surface is a surface of a perfluoroelastomer member and the perfluoroelastomer material formed is a perfluoroelastomer weld.
    Type: Grant
    Filed: March 9, 2021
    Date of Patent: July 19, 2022
    Assignee: Greene, Tweed Technologies, Inc.
    Inventors: Ronald R. Campbell, Christopher Corrado, Brian Alan Ux, Robert Anthony Rey, Gary Reichl, Carmin Quartapella
  • Patent number: 11390721
    Abstract: The subject matter described herein relates to methods for polymer xanthylation and the xanthylated polymers produced by such methods. Subsequent replacement of the xanthylate moiety allows facile entry into functionalized polymers.
    Type: Grant
    Filed: October 3, 2018
    Date of Patent: July 19, 2022
    Assignee: The University of North Carolina at Chapel Hill
    Inventors: Erik Alexanian, Frank Albert Leibfarth, Jill Williamson, Will Czaplyski
  • Patent number: 11383221
    Abstract: The present disclosure relates to a preparation method of a super absorbent polymer capable of improving absorption performance of the super absorbent polymer by adding a simple additive later. The preparation method includes the steps of: forming a hydrogel polymer by cross-linking and polymerizing a water-soluble ethylene-based unsaturated monomer having at least partially neutralized acidic groups in the presence of an internal cross-linking agent; drying, pulverizing and classifying the hydrogel polymer to form a base resin powder; forming a surface cross-linked layer by further cross-linking a surface of the base resin powder in the presence of a surface cross-linking agent, adding a monovalent to trivalent metal cation on the surface cross-linked base resin powder at a temperature of 25° C. to 80° C., and maintaining and aging the resulting metal cation-added product at a temperature of 40° C. to 60° C. for 10 to 30 minutes.
    Type: Grant
    Filed: November 18, 2019
    Date of Patent: July 12, 2022
    Inventors: Jungmin Sohn, Tae Young Won, Hyemin Lee
  • Patent number: 11387017
    Abstract: The following two problems arise when carbon is added to a starting material powder in the process of production of an MgB2 superconductor: (1) an impurity phase increases; and (2) the degree of substitution of carbon at boron sites is spatially non-uniform. This superconductor production method comprises: a mixing step of mixing a starting material powder and an additive; and a heat treatment step of heat-treating the mixture prepared in the mixing step. The starting material powder is MgB2 powder or a mixed powder of magnesium and boron, and the additive is an Mg—B—C compound containing three elements of magnesium, boron and carbon.
    Type: Grant
    Filed: February 26, 2018
    Date of Patent: July 12, 2022
    Assignee: HITACHI, LTD.
    Inventors: Motomune Kodama, Hideki Tanaka, Takaaki Suzuki, Junichi Shimoyama
  • Patent number: 11384236
    Abstract: The present invention relates to a liquid (meth)acrylic composition comprising a (meth)acrylic monomer, a (meth)acrylic polymer and a multistage polymer. In particular the present invention it relates to liquid composition comprising a (meth)acrylic monomer, a (meth)acrylic polymer and a multistage polymer that can be used as a syrup and especially as a syrup for impregnation.
    Type: Grant
    Filed: October 23, 2020
    Date of Patent: July 12, 2022
    Assignee: ARKEMA FRANCE
    Inventors: Raber Inoubli, Philippe Hajji, Rosangela Pirri, Pierre Gerard
  • Patent number: 11384178
    Abstract: A conjugated diene-based polymer catalyzed with a lanthanide rare earth element, and having high linearity and improved compounding properties, and a method for preparing the same are provided. The conjugated diene-based polymer catalyzed with a lanthanide rare earth element has high linearity, and if applied to a rubber composition, may show excellent processability, tensile strength and viscoelasticity.
    Type: Grant
    Filed: November 13, 2018
    Date of Patent: July 12, 2022
    Inventors: Su Hwa Kim, Hyo Jin Bae, Sung Ho Park, Soo Young Choi, Jeong Heon Ahn
  • Patent number: 11375952
    Abstract: An adhesive hydrogel has low contact resistance against the body surface and excellent conformability and adhesiveness to the body surface, so that noise generation can be reduced. Such adhesive hydrogel enables measurements of weak fetal heart rate signals. The adhesive hydrogel includes a polymer matrix prepared by crosslinking-copolymerization of an acrylamide derivative, which is a nonionic polymerizable monomer including a polymerizable carbon-carbon double bond in a molecule, and polyfunctional (meth)acrylamide, which is a crosslinkable monomer comprising 2 or more polymerizable carbon-carbon double bonds in a molecule, water, a polyvalent alcohol, and an electrolyte salt, wherein a laminate of the adhesive hydrogel with an Ag/AgCl sheet exhibits the impedance of 1? to 100? at the frequency of 0.1 Hz measured in accordance with the method of ANSI/AAMI EC12:2000, and the dynamic elastic modulus G? at the frequency of 1 Hz measured at 25° C. and dispersed frequencies is 1.0×103 Pa to 1.0×104 Pa.
    Type: Grant
    Filed: September 27, 2018
    Date of Patent: July 5, 2022
    Assignee: SEKISUI PLASTICS CO., LTD.
    Inventors: Takaaki Hatori, Takahiko Fujita, Kazuhiro Yoshikawa
  • Patent number: 11377388
    Abstract: A non-frangible glass article strengthened by a dual or two-step ion exchange (IOX) process, where the first IOX step leads to a depth of compressive layer FSM_DOL>0.1·t or, in some embodiments, FSM_DOL>0.15·t, where t is the thickness of the glass, is provided. The glass article has a compressive stress CS1 after the first IOX step at the surface of from 100 MPa to 400 MPa or, in some embodiments, from 150 MPa to 300 MPa. The first IOX step is followed by a second IOX step, leading to a “spike” compressive stress CS2 after the second IOX step at the surface of greater than 500 MPa or, in some embodiments, 700 MPa. The width of the spike generated by the second IOX is between 1 ?m and 30 ?m, or between 8 ?m and 15 ?m, using the criteria where the magnitude (absolute value) of the slope of the spike is higher than 20 MPa/?m.
    Type: Grant
    Filed: May 3, 2021
    Date of Patent: July 5, 2022
    Assignee: Corning Incorporated
    Inventors: Pascale Oram, Rostislav Vatchev Roussev, Vitor Marino Schneider, Emily Elizabeth Young
  • Patent number: 11370849
    Abstract: A method for producing a carboxy group-containing hydrogenated nitrile rubber includes a step of preparing a latex of a carboxy group-containing nitrile rubber by polymerizing a monomer mixture in a dispersive medium, the monomer mixture containing at least an ?,?-ethylenically unsaturated nitrile monomer and a carboxy group-containing monomer; a step of heating the latex of the carboxy group-containing nitrile rubber at 50 to 85° C. in the state where the pH is adjusted in the range of 8.5 to 12; and a step of subjecting the latex of the carboxy group-containing nitrile rubber after the heating to a hydrogenation reaction in the presence of a hydrogenation catalyst in the state where the pH is adjusted in the range of 5 to 8.
    Type: Grant
    Filed: January 18, 2019
    Date of Patent: June 28, 2022
    Assignee: ZEON CORPORATION
    Inventor: Yasuaki Watanabe
  • Patent number: 11370861
    Abstract: Disclosed are such co-polymers of vinylidene substituted aromatic monomers and unsaturated compounds containing nucleophilic groups chain extended by a copolymer of one or more vinylidene aromatic monomers and one or more unsaturated compounds having pendant electrophilic groups which copolymerize with the one or more vinylidene aromatic monomers. Disclosed are compositions comprising vinylidene substituted aromatic monomers and unsaturated compounds containing nucleophilic groups and a copolymer of one or more vinylidene aromatic monomers and one or more unsaturated compounds having pendant electrophilic groups, which may optionally, contain salts of alkaline earth metals, alkali metals, transition metals, post transition metals or metalloids. Disclosed are methods of preparing such chain-extended and/or branched copolymers.
    Type: Grant
    Filed: December 3, 2019
    Date of Patent: June 28, 2022
    Assignee: TRINSEO EUROPE GMBH
    Inventors: Claude T. E. Van Nuffel, Abidin Balan
  • Patent number: 11364232
    Abstract: This present invention relates to a polymer of ?-glutamyl transpeptidase catalyzing hydrolysis-induced charge reversal. The polymer comprises a ?-glutamyl transpeptidase-responsive element represented by Formula (I). When the polymer is used as drug carrier for anticancer drug, it can have a long circulation time in the blood, and can realize a charge reversal from negatively charged or the neutral to positively charged around the tumor blood vessel region, so that the positively charged polymer effectively penetrates deep into the tumor tissue, fast entering into the tumor cells, and greatly improves the therapeutic effect of the drug on the tumor. This overcomes the problems of slow diffusion of traditional polymer drug carriers in tumors and weak interaction with tumor cells, and has great significance in the field of anticancer treatment in the medical field.
    Type: Grant
    Filed: September 21, 2018
    Date of Patent: June 21, 2022
    Assignee: HAINAN POLY PHARM CO., LTD.
    Inventors: Youqing Shen, Quan Zhou, Changhuo Xu, Jiajia Xiang