Patents Examined by Rabon A. Sergent
  • Patent number: 10772964
    Abstract: Amino acid based polymers and polymer blends. Compositions comprising at least one amino acid based polymer or polymer blend, at least one bioactive agent, and optionally at least one filler. Additionally, compositions comprising at least one bacteriophage and at least one salt or buffer, which, for example, are in the form of a dry powder, and methods of preparing thereof are disclosed.
    Type: Grant
    Filed: June 21, 2016
    Date of Patent: September 15, 2020
    Assignee: Phagelux (Canada), Inc.
    Inventors: Ramaz Katsarava, David Tugushi, Vakhtang Beridze, Nancy Tawil
  • Patent number: 10752728
    Abstract: The invention relates to a polyisocyanate which is based on tolylene 2,4-diisocyanate, tolylene 2,6-diisocyanate or a mixture of tolylene 2,4- and 2,6-diisocyanate and has isocyanurate groups, wherein the polyisocyanate has a) a weight average molecular weight of from ?350 to ?800 g/mol, determined by means of gel permeation chromatography using a polystyrene standard and tetrahydrofuran as eluent in accordance with DIN 55672-1:2016-03, b) a polydispersity D of from >1 to ?1.5, where the polydispersity D is the ratio of weight average and number average molecular weight of the polyisocyanate and the weight average and number average molecular weight are in each case determined by means of gel permeation chromatography using a polystyrene standard and tetrahydrofuran as eluent in accordance with DIN 55672-1:2016-03, and c) a content of monomeric tolylene diisocyanate of ?1% by weight, based on the total weight of the polyisocyanate.
    Type: Grant
    Filed: October 18, 2017
    Date of Patent: August 25, 2020
    Assignee: Covestro Deutschland AG
    Inventors: Christoph Irle, Stefan Groth, Ruiwen Wu, Antonio Midolo, Robert Maleika, Hongchao Li, Hao Liu
  • Patent number: 10731051
    Abstract: The present invention provides a system comprising an allophanate composition comprising a neutralized polyol, a polyuretdione resin, a tertiary amine catalyst, an additive package, and a reducer; and a neutralized basecoat comprising an inorganic salt and a pigment. The present invention further provides a method of making an allophanate system comprising combining a neutralized polyol with a polyuretdione resin in the presence of a tertiary amine catalyst, an additive package, and a reducer to produce an allophanate composition, and contacting the allophanate composition with a neutralized basecoat comprising an inorganic salt and a pigment. The system may be used to make coatings, adhesives, castings, composites, and sealants in which clear-coating on neutralized pigmented basecoats is much improved in comparison to coating on non-neutralized basecoats.
    Type: Grant
    Filed: March 23, 2018
    Date of Patent: August 4, 2020
    Assignee: Covestro LLC
    Inventors: Alan Ekin, Alan D. Bushmire
  • Patent number: 10730997
    Abstract: The invention relates to a polyisocyanate mixture comprising at least one polyisocyanurate which is based on tolylene diisocyanate and has isocyanate groups and at least one polyurethane which is based on tolylene diisocyanate and has isocyanate groups, wherein the polyisocyanate mixture has a) a solids content of from ?51 to ?90% by weight, based on the total weight of the polyisocyanate mixture and b) a content of monomeric tolylene diisocyanate of ?0.9% by weight, based on the total weight of the polyisocyanate mixture, and the polyisocyanurate which is based on tolylene diisocyanate and has isocyanate groups has a polydispersity D of from ?1 to ?1.
    Type: Grant
    Filed: October 18, 2017
    Date of Patent: August 4, 2020
    Assignee: Covestro Deutschland AG
    Inventors: Christoph Irle, Stefan Groth, Ruiwen Wu, Antonio Midolo, Robert Maleika, Hongchao Li, Hao Liu
  • Patent number: 10730995
    Abstract: The present invention provides novel cyclic phosphorus-containing compounds, namely hydroxyl-functional phospholene-1-oxides, serving as highly efficient reactive flame retardants in urethane systems, particularly in flexible polyurethane foams, semi-rigid and rigid polyurethane and polyisocyanurate foams. The invention further provides fire-retarded polyurethane compositions comprising said hydroxyl-functional phospholene-1-oxides.
    Type: Grant
    Filed: November 10, 2016
    Date of Patent: August 4, 2020
    Assignee: ICL-IP America Inc.
    Inventors: Joseph Zilberman, Andrew Piotrowski, Eran Gluz, Jeffrey Stowell, Mark Gelmont, Zhihao Chen, Mayank Singh
  • Patent number: 10723833
    Abstract: The present invention provides novel cyclic phosphorus-containing compounds, namely hydroxyl-functional phospholene-1-oxides, serving as highly efficient reactive flame retardants in urethane systems, particularly in flexible polyurethane foams, rigid polyurethane foams and rigid polyisocyanurate foams. The invention further provides fire-retarded polyurethane compositions comprising said hydroxyl-functional phospholene-1-oxides.
    Type: Grant
    Filed: November 10, 2016
    Date of Patent: July 28, 2020
    Assignee: ICL-IP America Inc.
    Inventors: Joseph Zilberman, Andrew Piotrowski, Eran Gluz, Jeffrey Stowell, Mark Gelmont, Zhihao Chen, Mayank Singh
  • Patent number: 10703851
    Abstract: The present invention relates to the use of nitrogenous compounds of formula (I) and/or corresponding quaternized and/or protonated compounds for production of polyurethanes, to compositions comprising said compounds and also to polyurethane systems, in particular polyurethane foams, obtained using said compounds.
    Type: Grant
    Filed: July 10, 2015
    Date of Patent: July 7, 2020
    Assignee: Evonik Operations GmbH
    Inventors: Thomas Günther, Michael Fiedel, Martin Glos, Roland Hubel, Frank Schubert
  • Patent number: 10696775
    Abstract: The present invention provides a system comprising an allophanate composition comprising a neutralized polyol, a polyuretdione resin, a tertiary amine catalyst, an additive package, and a reducer and a neutralized basecoat comprising an acid scavenger and a pigment. The resulting allophanate system may be used to make coatings, adhesives, castings, composites, and sealants in which clear-coating on neutralized pigmented basecoats is much improved in comparison to non-neutralized basecoats.
    Type: Grant
    Filed: March 23, 2018
    Date of Patent: June 30, 2020
    Assignees: COVESTRO LLC, COVESTRO DEUTSCHLAND AG
    Inventors: Alan Ekin, Florian Johannes Stempfle
  • Patent number: 10696778
    Abstract: The present invention is based, in part, on the discovery that the polymeric materials described herein produce polyurethane copolymers with advantageous optical properties. In particular embodiments, polyurethane copolymers comprise repeating units of isosorbide and a difunctional linker where the difunctional linkers can be diisocyanate, dithiocyanate, dicarboxylic acid, and other monomers. Some of the advantageous optical properties of these polymeric materials include a refractive index of about 1.5 and an Abbe value of at least about 50. Also described are methods for producing these polyurethane copolymers.
    Type: Grant
    Filed: January 25, 2018
    Date of Patent: June 30, 2020
    Assignee: NOVOL, INC.
    Inventors: Ray F. Stewart, Monica Bhatia, Jagdish Jethmalani, Sanjiban Chakraborty
  • Patent number: 10640603
    Abstract: A urethane (meth)acrylate resin wherein the viscosity of the resin is low, the formability into a sheet-formed product, in particular, an optical sheet provided with fine uneven shapes on the surface is excellent, and a high refractive index can be realized, a curable resin composition including the urethane (meth)acrylate resin as an indispensable component, a cured product thereof, and a plastic lens are provided. A urethane (meth)acrylate resin produced by reacting aromatic diisocyanate compound (a), bisphenol-ethylene oxide adduct diol (b) having at least three aromatic ring or alicyclic structures in the molecule, and hydroxy-containing (meth)acrylate compound (c), which are indispensable raw material components, a curable resin composition containing the urethane (meth)acrylate resin as a primary component, and a cured product thereof.
    Type: Grant
    Filed: January 21, 2016
    Date of Patent: May 5, 2020
    Assignee: DIC Corporation
    Inventors: Yasuko Odani, Nobuo Kobayashi
  • Patent number: 10633477
    Abstract: The present invention provides a reaction mixture comprising a polyuretdione resin, a neutralized polyol, an acid-blocked tertiary amine catalyst, and optionally, an additive package selected from the group consisting of flow control additives, and wetting agents, and solvents, wherein the acid has a pKa of greater than 4.82. Compositions made from the reaction mixture of the present invention may be catalyzed at temperatures from room temperature to 130° C. and are particularly applicable in or as coatings, adhesives, castings, composites, and sealants with good performance and extended pot-life.
    Type: Grant
    Filed: March 23, 2018
    Date of Patent: April 28, 2020
    Assignees: Covestro LLC, Covestro Deutschland AG
    Inventors: Alan Ekin, David P. Zielinski
  • Patent number: 10626293
    Abstract: An acrylic polyurethane coating composition, comprising an isocyanate component comprising at least one polyisocyanate trimer; and an isocyanate reacting mixture, the isocyanate reacting mixture comprising from 25 wt % to 80 wt % of an acrylic polyol and from 1 wt % to 30 wt % of a polyether polyol, based on a total weight of the acrylic polyurethane coating composition, the acrylic polyol having a solids content of at least 50 wt %, based on a total weight of the acrylic polyol, and the polyether polyol having a viscosity of less than 500 mPa*s at 25° C. and a number average molecular weight greater than 300 and less than 700.
    Type: Grant
    Filed: November 30, 2016
    Date of Patent: April 21, 2020
    Assignee: DOW Global Technologies LLC
    Inventors: Christopher S. Letko, Amber Marie Stephenson, John N. Argyropoulos, John Klier
  • Patent number: 10626213
    Abstract: The photoelastic polyurethane resin has a Young's modulus at 25° C. of 2 to 5 MPa, a photoelastic constant at 25° C. of 1000×10?12 Pa?1 to 100000×10?12 Pa?1, and a glass transition temperature of ?60° C. to ?21° C.
    Type: Grant
    Filed: February 5, 2016
    Date of Patent: April 21, 2020
    Assignees: MITSUI CHEMICALS, INC., A SCHOOL CORPORATION KANSAI UNIVERSITY
    Inventors: Masahiko Mitsuzuka, Satoshi Yamasaki, Yoshiro Tajitsu
  • Patent number: 10626212
    Abstract: Embodiments of the present disclosure are directed to polyurethane prepolymers, more particularly, to polyurethane formulations including a polyurethane prepolymer that can form polyurethanes. As an example, a polyurethane formulation can include a polyurethane prepolymer and a polyol composition including polyols, water, and a catalyst, where the polyurethane prepolymer is a reaction product of a monol and an excess amount of a polyisocyanate.
    Type: Grant
    Filed: July 6, 2015
    Date of Patent: April 21, 2020
    Assignee: Dow Global Technologies LLC
    Inventors: Elisa Corinti, Gianluca Casagrande
  • Patent number: 10619000
    Abstract: The invention relates to a method for producing a biomass-resource-derived polyurethane, which comprises: reacting a dicarboxylic acid and an aliphatic diol to produce a polyester polyol; and reacting the polyester polyol and a polyisocyanate compound, wherein the dicarboxylic acid contains at least one component derived from biomass resources, a content of an organic acid in the dicarboxylic acid is more than 0 ppm and not more than 1,000 ppm relative to the dicarboxylic acid, and a pKa value of the organic acid at 25° C. is not more than 3.7.
    Type: Grant
    Filed: May 16, 2019
    Date of Patent: April 14, 2020
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Teruhiko Ohara, Naoki Suzuki, Yasuko Nakajima, Hiroto Itou, Takayuki Aoshima, Naoki Sugai, Takanao Matsumoto
  • Patent number: 10611726
    Abstract: Provided is a method for producing a polythiol compound, including obtaining one or more polythiol compounds selected from the group consisting of a polythiol compound represented by Formula (3), a polythiol compound represented by Formula (4), and a polythiol compound represented by Formula (5) through steps including: reacting 2-mercaptoethanol with an epihalohydrin in an amount of 1.00 equivalent or more and 1.25 equivalent or less with respect to the 2-mercaptoethanol to obtain a polyol compound represented by Formula (1); and reacting the polyol compound represented by Formula (1) with an alkali metal sulfide in an amount of 1.04 equivalent or more and 1.25 equivalent or less with respect to the 2-mercaptoethanol to obtain a polyol compound represented by Formula (2).
    Type: Grant
    Filed: June 22, 2018
    Date of Patent: April 7, 2020
    Assignee: HOYA LENS THAILAND LTD.
    Inventors: Yukio Kageyama, Masahisa Kousaka, Tomofumi Ohnishi
  • Patent number: 10611872
    Abstract: The present invention relates to thermoplastic polyurethanes obtainable or obtained by reaction of at least one aliphatic polyisocyanate; at least one chain extender; and at least one polyol composition, where the polyol composition comprises a polyol selected from the group consisting of polyetherols and at least one bisphenol derivative selected from the group consisting of bisphenol A derivatives with a molecular weight Mw>315 g/mol and bisphenol S derivatives with a molecular weight Mw>315 g/mol, where at least one of the OH groups of the bisphenol derivative is alkoxylated, and to processes for producing such thermoplastic polyurethanes and to the use of a thermoplastic polyurethane according to the invention for producing extrusion products, films and moldings.
    Type: Grant
    Filed: October 28, 2014
    Date of Patent: April 7, 2020
    Assignee: BASF SE
    Inventors: Frank Prissok, Sebastian Hartwig, Stefan Bokern, Julia Liese
  • Patent number: 10584090
    Abstract: This invention relates to a composition for a preparation of polyurethane dispersion, comprising bio-based polyol as shown in structure (I) and polyhydroxy fatty acid compound as shown in structure (II): wherein, R represents a polyhydric alcohol unit that is selected from aliphatic polyhydric alcohol, alicyclic polyhydric alcohol, cyclic polyhydric alcohol, aromatic polyhydric alcohol, or optionally, cyclic polyhydroxyl having heteroatom; R\ represents a hydrocarbon unit obtained from a molecular chain of unsaturated fatty acid having 14-24 carbon atoms and having from 1-6 pairs of vicinal diol group per one molecular chain of such unsaturated fatty acid; n represents an integer from 2 to 8 of an ester group obtained from a reaction of polyhydric alcohol and unsaturated fatty acid; wherein said composition is prepared from a process comprising the steps of: i.
    Type: Grant
    Filed: June 16, 2016
    Date of Patent: March 10, 2020
    Assignee: PTT Global Chemical Public Company Limited
    Inventor: Papapida Pornsuriyasak
  • Patent number: 10556982
    Abstract: A thermoplastic polyurethane resin composition having enhanced texture and durability is capable of ensuring excellent appearance quality by applying polyester polyol including, polytetramethylene ether glycol and polydimethylsiloxane diol to an existing thermoplastic polyurethane resin composition, having excellent mechanical properties and long-term durability, such as anti-scratch and abrasion resistance, while largely enhancing texture quality, largely reducing producing costs by replacing a material such as natural leather, reducing generation of a volatile organic compound (VOC), and using the VOC in a surface material for a vehicle interior material.
    Type: Grant
    Filed: November 2, 2016
    Date of Patent: February 11, 2020
    Assignee: Hyundai Motor Company
    Inventors: Hak Soo Kim, Sang Yun Lee, Jae Chan Lee, Dae Young Kwon
  • Patent number: 10544252
    Abstract: There is provided a method that can realize the treatment of an amine compound, a deterioration product thereof and the like in a simple and a low-cost manner. The method includes treating a carbon dioxide absorbing agent, comprising a step in which at least one carbon dioxide absorbing agent represented by OH—R2—NR3—R4—OH or H—NR6—R7—NR8—H into contact with a compound containing two or more isocyanate groups in its molecule to produce a solid containing a urethane bond or a urea bond. In the above formula, R2, R3, R4, R6, R7, and R8 each independently represent CvHwOxNy wherein v, w, x, and y are 0?v?10, 0?w?22, 0?x?3, and 0?y?3, respectively.
    Type: Grant
    Filed: March 14, 2016
    Date of Patent: January 28, 2020
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Hiroko Watando, Takashi Kuboki, Satoshi Saito