Synthetic Resin Patents (Class 502/402)
  • Patent number: 11679375
    Abstract: The present disclosure is directed to methods and systems of purifying solvents. The purified solvents can be used for cleaning a semiconductor substrate in a multistep semiconductor manufacturing process.
    Type: Grant
    Filed: August 27, 2020
    Date of Patent: June 20, 2023
    Assignee: Fujifilm Electronic Materials U.S.A., Inc.
    Inventors: Stephen Earl Dyer, Brendan Thomas Lane, Patrick Adams Mahoney, Sr.
  • Patent number: 11673116
    Abstract: The present invention relates to a superabsorbent polymer and a method for producing the same. The superabsorbent polymer includes a core layer polymerized with monomers having carboxylic group, a first shell layer formed from a surface crosslinking agent, and a second shell layer formed from zingiberaceae extracts. By a surface modification on the first shell layer performed from a specific amount of the zingiberaceae extracts, the superabsorbent polymer produced according to the method for producing the same has a good antimicrobial property and deodorizing effects, and retains an original absorbent property.
    Type: Grant
    Filed: August 10, 2021
    Date of Patent: June 13, 2023
    Assignee: FORMOSA PLASTICS CORPORATION
    Inventors: Zhong-Yi Chen, Cheng-Lin Lee, Feng-Yi Chen, Yu-Yen Chuang
  • Patent number: 11654416
    Abstract: The present invention relates to a super-absorbent polymer having excellent properties, both centrifugal retention capacity (CRC) and absorption under pressure (AUP) having been improved by introducing a surface crosslinked layer crosslinked by surface-modified inorganic particles, and to a method for preparing the same. The super-absorbent polymer comprises: a base resin powder containing a crosslinked polymer of water-soluble ethylene-based unsaturated monomers having an at least partially neutralized acidic group; and a surface crosslinked layer formed on the base resin powder, wherein inorganic particles may be chemically bound to the crosslinked polymer contained in the surface crosslinked layer, via an oxygen-containing bond or a nitrogen-containing bond.
    Type: Grant
    Filed: March 5, 2021
    Date of Patent: May 23, 2023
    Inventors: Sung Soo Park, Gi Cheul Kim, Ju Eun Kim, Hyeon Choi, Hyo Sook Joo, Sung Hyun Park, Hee Jung Choi, Ki Youl Yoon
  • Patent number: 11655318
    Abstract: A method of preparing super absorbent polymer includes carrying out a crosslinking polymerization of a monomer mixture comprising a water-soluble ethylenically unsaturated monomer having at least partially neutralized acidic groups, a forming agent, a foam-promoting agent and a silicone-based surfactant in the presence of an internal crosslinking agent to form a hydrogel polymer; drying, pulverizing and classifying the hydrogel polymer to form a base polymer powder; and further crosslinking a surface of the base polymer powder in the presence of a surface crosslinking agent to form a surface crosslinked layer. The method produces super absorbent polymer having not only an excellent absorbent capacity and an absorbency under load but also the rewetting phenomenon can be effectively prevented.
    Type: Grant
    Filed: September 30, 2020
    Date of Patent: May 23, 2023
    Inventors: Sang Gi Lee, Hye Mi Nam, Min Ho Hwang, Soo Jin Lee, Tae Hwan Jang
  • Patent number: 11648531
    Abstract: The method for preparing a super absorbent polymer according to the present disclosure reduces the generating amount of a fine powder while realizing the same particle size distribution in the process of pulverizing the dried polymer, thereby reducing the load of the fine powder reassembly, drying, pulverizing and classifying steps.
    Type: Grant
    Filed: August 16, 2019
    Date of Patent: May 16, 2023
    Inventors: Yoon Jae Min, Jong Hun Song, Gicheul Kim, Jae Yul Kim, Heechang Woo
  • Patent number: 11648532
    Abstract: An absorbent compound and method of making the same, where the absorbent compound includes an amine oxide that comprises about 30% to about 55% of the absorbent compound and a polymer that comprises about 30% to about 55% of the absorbent compound.
    Type: Grant
    Filed: December 17, 2019
    Date of Patent: May 16, 2023
    Inventor: Jason Thor
  • Patent number: 11602585
    Abstract: Provided herein are materials and methods of reducing contamination in a biological substance or treating contamination in a subject by one or more toxins comprising contacting the biological substance with an effective amount of a sorbent capable of sorbing the toxin, wherein the sorbent comprises a plurality of pores ranging from 50 ? to 40,000 ? with a pore volume of 0.5 cc/g to 5.0 cc/g and a size of 0.05 mm to 2 cm and sorbing the toxin. Also provided are kits to reduce contamination by one or more toxins in a biological substance comprising a sorbent capable of sorbing a toxin, wherein the sorbent comprises a plurality of pores ranging from 50 ? to 40,000 ? with a pore volume of 0.5 cc/g to 5.0 cc/g and a size of 0.05 mm to 2 cm and a vessel to store said sorbent when not in use together with packaging for same.
    Type: Grant
    Filed: April 26, 2017
    Date of Patent: March 14, 2023
    Assignee: CytoSorbents Corporation
    Inventors: Phillip P. Chan, Vincent J. Capponi, Thomas D. Golobish, Humayra Begum Ali
  • Patent number: 11602732
    Abstract: Polymer sorbents selectively remove cytokines and bacterial endotoxins from whole blood and other body liquids, in particular blood plasma, lymph etc., as well as from aqueous protein solutions and aqueous organic compound solutions, also containing inorganic salts. The sorbent is able to remove both cytokines and bacterial endotoxins, improve selectivity of the polymer sorbents in respect to the compounds as well as provide a simple and effective method of producing said sorbent.
    Type: Grant
    Filed: May 17, 2018
    Date of Patent: March 14, 2023
    Assignee: EFFERON GMBH
    Inventors: Ivan Viktorovich Bessonov, Alexey Sergeevich Morozov, Maria Nikolaevna Kopitsyna
  • Patent number: 11577219
    Abstract: Method for preparing a natural organic macromolecular water treatment agent including: dissolving amylose corn starch in an alkali solution, stirring for 30 min, to obtain a suspension, freezing the suspension to fully frozen state, melting and dialyzing, to obtain a corn starch dispersion; mixing a modified flax fiber, the dispersion, nano-hybrid silica and distilled water, performing 800 W ultrasonication for 10 min, to obtain a treated suspension; taking an amount of a superabsorbent macromolecular resin with a certain shape, making it absorb water and swell into a solid hydrogel with the certain shape; mixing the solid hydrogel and the treated suspension, static defoaming, loading into a mold and solidifing, drying until the solid hydrogel is completely dehydrated, to obtain a hollow agent; spraying a catalytic degrading agent/toxin degrading agent on the surface of the hollow agent and/or the inner wall of holes thereof, to obtain the target agent.
    Type: Grant
    Filed: July 23, 2021
    Date of Patent: February 14, 2023
    Inventors: Jun Liu, Yuguo Zhuo, Jinming Zhuo
  • Patent number: 11530174
    Abstract: The present invention discloses a method for separating propylene, propyne, propane and propadiene from mixed gas, wherein, comprising: a high purity component can be obtained as metal-organic frameworks as adsorbents through adsorptive separation and purification of a mixed gas containing propylene, propyne, propane and propadiene a general structural formula of the metal-organic framework material is [M(C4O4)(H2O)]·1.5H2O, wherein M is metal ions, the metal-organic framework material is a three-dimensional network structure formed by transition metal ions or alkaline earth metal ions and squaric acid through coordination bonds or intermolecular forces. The metal-organic framework materials of the present invention exhibit excellent adsorption and separation performances for propylene, propyne, propane and propadiene. The cheap and available raw materials for the synthesis, simple operation, and low cost make it cost-efficient for preparation of such metal-organic frameworks.
    Type: Grant
    Filed: October 24, 2019
    Date of Patent: December 20, 2022
    Assignee: ZHEJIANG UNIVERSITY
    Inventors: Zongbi Bao, Liangying Li, Qilong Ren, Zhiguo Zhang, Yiwen Yang, Qiwei Yang
  • Patent number: 11524274
    Abstract: An absorbent is provided, which is produced from component A, a foaming agent, and component B, a resin. Furthermore, a device and a method for producing the absorbent and a method for absorbing a liquid by means of the absorbent are provided.
    Type: Grant
    Filed: August 21, 2017
    Date of Patent: December 13, 2022
    Assignee: OTEX AG
    Inventor: Alexandre Mäder
  • Patent number: 11525028
    Abstract: The thermoplastic polyurethane (TPU) compositions described herein have biodegradable and/or bioabsorbable hard and soft segments. The TPU hard segment can be formed from a polyisocyanate and a 2,5-substituted diketopiperazine.
    Type: Grant
    Filed: August 6, 2020
    Date of Patent: December 13, 2022
    Assignee: Lubrizol Advanced Materials, Inc.
    Inventors: Cathrin G. Kirchhoefer, Andrew P. Dove, Anthony J. Walder
  • Patent number: 11518699
    Abstract: A two-step process for recovering useable solids from food processing wastewater and for significantly reducing the pollutants, chemical, bacterial, and viral load. The first step is the addition of pretreatment chemicals such as metal-based coagulant, pH adjuster, oxidant or a combination thereof. The second step is pumping the chemically pretreated wastewater into a foam fractionation system where a gas is introduced into the chemically treated wastewater to create a rising foam that captures and remove solid materials from the remaining wastewater effluent. The solids are recovered for additional post-processing and the effluent is discharged for post-processing or to existing bodies of water.
    Type: Grant
    Filed: March 27, 2020
    Date of Patent: December 6, 2022
    Assignee: AQUA-TERRA CONSULTANTS
    Inventor: Alan Ismond
  • Patent number: 11498050
    Abstract: A method of preparing a superabsorbent polymer, which enables the preparation of the superabsorbent polymer exhibiting an improved absorption rate while maintaining excellent absorption performances is provided.
    Type: Grant
    Filed: November 15, 2019
    Date of Patent: November 15, 2022
    Inventors: Kyu Pal Kim, Jinuk Choi, Sang Hwa Lee, Gicheul Kim, Ki Hyun Kim, Seul Ah Lee
  • Patent number: 11491463
    Abstract: Superabsorbent mixtures M comprising at least 70% by weight of superabsorbent A having a liquid absorption of 20 g/g (T20) of less than 300 s and/or a volumetric liquid absorption under pressure 0.3 psi (2.07 kPa) (VAUL) with a ? value of less than 400 s, and at least 5% by weight of superabsorbent B having a centrifuge retention capacity (CRC) of at least 30 g/g.
    Type: Grant
    Filed: January 2, 2019
    Date of Patent: November 8, 2022
    Assignee: BASF SE
    Inventors: Stephan Bauer, Katrin Baumann, Markus Toennessen, Christophe Bauduin, Markus Christian Biel, Thomas Daniel
  • Patent number: 11491461
    Abstract: A method and apparatus for removing an organosilicon component from a mixture are disclosed. The method and apparatus employ a copolymer of a di-alkenyl functional aromatic hydrocarbon and a polyorganosiloxane as the sorbent.
    Type: Grant
    Filed: February 28, 2018
    Date of Patent: November 8, 2022
    Assignee: Dow Silicones Corporation
    Inventors: Dongchan Ahn, Aaron Greiner, Robert Huber, James Thompson
  • Patent number: 11491465
    Abstract: A silica-based stationary phase for chromatography columns and the methods of preparing such. More particularly, but not by way of limitation, a silica-based stationary phase that is substantially free of polyethers (e.g., polymer glycols). Also, a chromatography column comprising a silica-based stationary phase substantially free of polyethers (e.g., polymer glycols) within its channels as either a thin-film coating and/or a monolith and/or a monolithic coating. More particularly, a micro-electro-mechanical system (MEMS) chromatograph comprising a silica-based monolith substantially free of polyethers (e.g., polymer glycols) as the stationary phase within the micro-channels of the column.
    Type: Grant
    Filed: November 5, 2015
    Date of Patent: November 8, 2022
    Assignees: GEOSERVICES EQUIPEMENTS, LA SOCIETE DES AMIS DE L'ECOLE SUPERIEURE DE PHYSIQUE ET CHIMIE INDUSTRIELLES DE LA VILLE DE PARIS
    Inventors: Jerome Breviere, Joachim Pragash Fleury, Jerome Vial, Didier Thiébaut, Anouar Essoussi, Imadeddine Azzouz, Kamran Danaie
  • Patent number: 11472758
    Abstract: Disclosed herein is a method for obtaining compounds and compositions from plant and fungus materials by thermal treatment, affinity capture, filtration, and release through multi-phasic transitions between gas, solid, and liquid states. The compounds of interest are obtained by manipulating the temperature and pressure of the heating chamber. The compounds in gas phase are passed through an affinity medium which captures the compounds of interest in either solid or liquid phase by exposing the compound of interest to the localized micro-affinity environment of the medium. The compounds are separated from the medium using direct competition with solvent or buffers optimized for the specific chemical properties of compounds.
    Type: Grant
    Filed: December 15, 2021
    Date of Patent: October 18, 2022
    Assignee: Real Isolates, LLC
    Inventors: Christina Miyabe Shields, Andrew Michiel Westerkamp
  • Patent number: 11465125
    Abstract: A water-absorbing resin that exhibits excellent absorption performance and a high permeation rate with respect to liquids to be absorbed, and that effectively reduces liquid leakages, even in an absorbent body using a large amount of the water-absorbing resin. The water-absorbing resin is formed from a polymer of a water-soluble ethylenically unsaturated monomer, and when a cross-sectional image of the water-absorbing resin obtained by X-ray computer tomography is observed, the percent area of cavity portions in the cross-sectional image is 2-10%. The liquid flow rate index when a physiological saline liquid column flow rate test is performed on the water-absorbent resin having a particle diameter of 250 to 500 ?m at 37° C. is 5-20.
    Type: Grant
    Filed: March 2, 2018
    Date of Patent: October 11, 2022
    Assignee: SUMITOMO SEIKA CHEMICALS CO., LTD.
    Inventors: Mikito Chiba, Yuichi Onoda
  • Patent number: 11465126
    Abstract: The production method includes: a gel-crushing step of grinding a crosslinked hydrogel polymer to obtain a particulate crosslinked hydrogel polymer; a heating drying step of obtaining dried particles from the particulate crosslinked hydrogel polymer by using a continuous stirring drying machine; a post-crosslinking step of post-crosslinking the particulate crosslinked hydrogel polymer or the dried particles; and a sizing step of adjusting a particle size of the dried particles or the post-crosslinked dried particles to obtain water-absorbent resin powder. The particulate crosslinked hydrogel polymer contains a gel fluidizer. A gel temperature of the particulate crosslinked hydrogel polymer containing the gel fluidizer, the gel temperature being measured by a contact thermometer, is not lower than 50° C. In the production method, the dried particles or the post-crosslinked dried particles is forcedly cooled before the sizing step.
    Type: Grant
    Filed: November 16, 2017
    Date of Patent: October 11, 2022
    Assignee: NIPPON SHOKUBAI CO., LTD.
    Inventors: Hiroyasu Watabe, Mai Sato, Ryota Wakabayashi, Yoshihiro Shobo, Shin-ya Katsube, Motohiro Imura, Koji Honda, Yoshifumi Adachi, Tsuyoshi Yorino, Masafumi Inoue, Tomoyuki Arake, Hiroki Hayashi, Naoki Katakura, Shin-ichi Fujino, Kunihiko Ishizaki, Tokio Shuto
  • Patent number: 11459159
    Abstract: The present invention relates to a material suitable for use in packages comprising nano-sized cellulose and an ethylene scavenging or ethylene absorbing agent. The invention also relates to methods for manufacturing such material, which may be paper, label, paperboard, plastic or film products.
    Type: Grant
    Filed: July 3, 2017
    Date of Patent: October 4, 2022
    Assignee: Stora Enso OYJ
    Inventors: Kaj Backfolk, Isto Heiskanen, Esa Saukkonen, Seppo Lampainen, Simo Siitonen, Marianne Andersson
  • Patent number: 11453636
    Abstract: A method is provided for separating a dicarboxylic acid product from a mixture containing such dicarboxylic acids. The method involves: providing a dicarboxylic acid-containing mixture of which at least 35% of the carboxylic acid content of the mixture is a dicarboxylic acid product of interest; running an extraction of said dicarboxylic acid-containing mixture through a chromatographic column configured with an amphoteric resin, such that the dicarboxylic acid product elutes preferentially from the dicarboxylic acid-containing mixture. In certain embodiments, the dicarboxylic acid product of interest can be a glucaric or gluconic acid product from a mixture of either or both of these with still other carboxylic acids.
    Type: Grant
    Filed: June 20, 2018
    Date of Patent: September 27, 2022
    Assignee: ARCHER DANIELS MIDLAND COMPANY
    Inventors: Pam Anklam, William Chris Hoffman, Mitchell Schultz, John G. Soper
  • Patent number: 11420184
    Abstract: Disclosed are water-absorbent resin particles comprising a crosslinked polymer comprising a monomer unit derived from a water-soluble ethylenically unsaturated monomer, wherein an artificial menstrual blood volume increase rate as measured in an artificial menstrual blood swelling test conducted in the order of i), ii), and iii) is 70% or more. i) putting 1.0 g of water-absorbent resin particles into a measuring cylinder with an inner diameter of 27 mm. ii) injecting 10 ml of artificial menstrual blood into the cylinder at once to swell the water-absorbent resin particles. iii) measuring a volume (A) of the swollen water-absorbent resin particles after 60 seconds from the injection and calculating an artificial menstrual blood volume increase rate according to Equation (I) below. Artificial menstrual blood volume increase rate (%)=(A?B)/B×100 . . . (I), A . . . Volume (ml) of swollen water-absorbent resin particles, B . . . Volume (ml) of injected artificial menstrual blood.
    Type: Grant
    Filed: March 28, 2018
    Date of Patent: August 23, 2022
    Assignee: SUMITOMO SEIKA CHEMICALS CO., LTD.
    Inventors: Hiroki Yabuguchi, Hiromi Miyashita, Hideki Yokoyama
  • Patent number: 11413602
    Abstract: The present invention relates to an organic polymer adsorbent, an organic polymer adsorbent composition, and a method for preparing an organic polymer adsorbent and, more specifically, to an organic polymer adsorbent to be used for a ventilation device such as a desiccant dehumidifier. According to the present invention, an adsorbent material is changed to an organic polymer adsorbent such that the mechanical stability and durability of the material itself can be ensured, and the specific surface area of interconnected inner pores and adsorbents and the size of formed pores can be controlled since toluene is contained as a pore generator of the adsorbent. Therefore, the adsorbent of the present invention has superior adsorption performance over that of other conventional organic polymer adsorbents containing a salt-type carboxyl group and has remarkably improved desorption performance, and thus has an effect of very remarkable energy efficiency.
    Type: Grant
    Filed: January 2, 2018
    Date of Patent: August 16, 2022
    Assignee: LG ELECTRONICS INC.
    Inventors: Taegyu Jin, Yong Ki Jeong, Janghee Park
  • Patent number: 11407665
    Abstract: The invention relates to environment management, particularly to methods for purifying a wastewater in order to climate a toxic impact of heavy and radioactive metals. A method for purifying fresh, combined and saline wastewater from radioactive and heavy metals using an electrolysis and a special active substance (sorbent), wherein the wastewater is fed to an electrolyzer with a chamber that is separated by a special membrane that is permeable for ions of metals separately of water, then changes of the pH occur in order to form complex compounds, which comprise ions of radioactive and heavy metals. Afterwards, the adsorption of the obtained compounds by the special active substance (sorbent) and filtering-off on a precoat filter that retains ions of heavy and radioactive metals are performed. The obtained filtrate is cemented without drying and evaporation in order to perform final deposition of the radioactive compounds.
    Type: Grant
    Filed: December 14, 2018
    Date of Patent: August 9, 2022
    Assignee: Unique Equipment Solutions LLC
    Inventor: Oleksandr Yuriiovych Mykytiuk
  • Patent number: 11383220
    Abstract: The method and materials of this invention make possible substantially faster techniques for organic-aqueous extractions and routine chemical reactions work-ups. The inventive material uses silicone elastomer-coated glass powders, magnetic powders, and sponges as absorbents to extract organic products from an aqueous mixture. After separation from the mixture, these different forms now loaded with organic products can serve as a convenient input for flash chromatographic separations or other processing. With these techniques, tedious liquid-liquid extractions are replaced by a simple solid filtration or transfer and emulsion formation is eliminated. These versatile sorbents can also be used for larger scale work-ups, various extractions of organics from an aqueous solution (e.g., water purification) or gas phase and various analytical or other applications.
    Type: Grant
    Filed: February 22, 2019
    Date of Patent: July 12, 2022
    Assignee: Faster Chemistry LLC
    Inventors: Gerald B Hammond, Bo Xu
  • 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: 11364480
    Abstract: A chromatography medium includes a porous matrix and nonporous globules bound on the inner and outer surfaces of the porous matrix. The average radius of the microglobules is not more than 30% of the average pore diameter of the porous matrix. The chromatography medium can be used in affinity chromatography. A method for preparing the chromatography medium may include providing a porous starting matrix, providing a polymerization solution, and initiating polymerization of the polymerization solution in the presence of the porous starting matrix to form insoluble nonporous microglobules that are bound to the inner and outer surfaces of the porous starting matrix.
    Type: Grant
    Filed: January 16, 2018
    Date of Patent: June 21, 2022
    Assignee: Sartorius Stedim Biotech GmbH
    Inventors: Adrian Ley, Florian Taft, Jan Schwellenbach, Louis Villain
  • Patent number: 11338267
    Abstract: Disclosed are water-absorbent resin particles comprising a crosslinked polymer comprising a monomer unit derived from a water-soluble ethylenically unsaturated monomer, wherein an artificial menstrual blood volume increase rate as measured in an artificial menstrual blood swelling test conducted in the order of i), ii), and iii) is 70% or more. i) putting 1.0 g of water-absorbent resin particles into a measuring cylinder with an inner diameter of 27 mm. ii) injecting 10 ml of artificial menstrual blood into the cylinder at once to swell the water-absorbent resin particles. iii) measuring a volume (A) of the swollen water-absorbent resin particles after 60 seconds from the injection and calculating an artificial menstrual blood volume increase rate according to Equation (I) below. Artificial menstrual blood volume increase rate (%)=(A?B)/B×100 . . . (I), A . . . Volume (ml) of swollen water-absorbent resin particles, B . . . Volume (ml) of injected artificial menstrual blood.
    Type: Grant
    Filed: March 28, 2018
    Date of Patent: May 24, 2022
    Assignee: SUMITOMO SEIKA CHEMICALS CO., LTD.
    Inventors: Hiroki Yabuguchi, Hiromi Miyashita, Hideki Yokoyama
  • Patent number: 11331648
    Abstract: A composite material containing a porous body having pores inside the porous body and a porous coordination polymer compound (PCP), in which the porous body has a network structure of Si—O bonds obtained by copolymerizing a dialkoxysilane and a trialkoxysilane, and the porous coordination polymer compound is carried in the pores of the porous body. Also, a method for producing a composite material containing a porous body having pores inside the porous body and a porous coordination polymer compound, in which the porous body has a network structure of Si—O bonds obtained by copolymerizing a dialkoxysilane and a trialkoxysilane, and the porous coordination polymer compound is carried in the pores of the porous body via a solvent.
    Type: Grant
    Filed: September 29, 2017
    Date of Patent: May 17, 2022
    Assignee: Japan Science and Technology Agency
    Inventors: Takaiku Yamamoto, Masaya Matsuoka, Yu Horiuchi
  • Patent number: 11332558
    Abstract: Provided is a water-absorbent resin that quickly absorbs water, even in sandbag in which a large amount of the water-absorbent resin has been used, that does not easily form unswollen lump, and that has a high gel swelling volume when water is used to swell the water-absorbent resin. This water-absorbent resin is configured from a polymer of water-soluble ethylenic unsaturated monomers. The physiological-saline absorption capacity of the water-absorbent resin is 40-60 g/g. When a cross-sectional image of the water-absorbent resin is observed by x-ray computed tomography, the fraction of the area of the cross-sectional image that is hollow portions (the hollow area ratio of the cross-sectional image), as calculated on the basis of formula (I), is no more than 10%.
    Type: Grant
    Filed: March 2, 2018
    Date of Patent: May 17, 2022
    Assignee: SUMITOMO SEIKA CHEMICALS CO., LTD.
    Inventors: Mikito Chiba, Yuichi Onoda
  • Patent number: 11325990
    Abstract: A process for producing superabsorbents, comprising polymerization of a monomer solution and thermal surface postcrosslinking, wherein the monomer solution comprises at least 0.75% by weight of a hydroxyphosphonic acid or salts thereof, calculated on the basis of the total amount of monomer used, and at least 0.09% by weight of aluminum cations, calculated on the basis of the total amount of polymer particles used, is added to the polymer particles before, during or after the thermal surface postcrosslinking.
    Type: Grant
    Filed: August 1, 2017
    Date of Patent: May 10, 2022
    Assignee: BASF SE
    Inventors: Kristine Hartnagel, Thomas Gieger, Thomas Daniel, Marcus Schroeder, Michelle Morano, Nathaniel Troy Greene
  • Patent number: 11285455
    Abstract: The present invention relates to an organic-inorganic hybrid nanoporous material, maintaining a nanoporous skeleton structure formed by coordination of an organic ligand containing an aromatic compound to a trivalent central metal ion, and further having an intramolecular acid anhydride functional group modified on the aromatic compound of the nanoporous skeleton structure, and thereby exhibits selectivity for olefins, and an adsorbent comprising the same. Specifically, the organic-inorganic hybrid nanoporous material of the present invention exhibits an excellent olefin-selective adsorption capacity through differences in adsorption equilibrium and adsorption rate, and thus can be usefully employed in the separation of C2-C4 hydrocarbons.
    Type: Grant
    Filed: October 17, 2017
    Date of Patent: March 29, 2022
    Assignee: Korea Research Institute of Chemical Technology
    Inventors: Ji Woong Yoon, Jong San Chang, Young Kyu Hwang, Kyung Ho Cho, U Hwang Lee, Su Kyung Lee, Ji Sun Lee
  • Patent number: 11278866
    Abstract: The present disclosure relates to a super absorbent polymer exhibiting improved rewetting property and excellent absorption property, and a preparation method of the same. This preparation method of a super absorbent polymer includes the steps of: preparing a base resin in which an acrylic acid-based monomer having at least partially neutralized acidic groups and an internal cross-linking agent are cross-linked and polymerized; and heating the base resin in the presence of a surface cross-linking agent to carry out surface modification, wherein the internal cross-linking agent includes a poly(meth)acrylate of polyols-based first internal cross-linking agent and a polyglycidyl ether of polyols-based second internal cross-linking agent in a specific weight ratio.
    Type: Grant
    Filed: September 4, 2018
    Date of Patent: March 22, 2022
    Inventors: Su Jin Kim, Dae Woo Nam, Ki Hyun Kim, Joonil Cho
  • Patent number: 11247190
    Abstract: The invention provides a composite material formed from an inorganic mesoporous, or mesoporous-like, material that is dispersed throughout a polymeric matrix formed by a crosslinked polymer that has acidic- or basic-residues and which may also optionally have further acidic- or basic-residues grafted onto the inorganic mesoporous material. The resulting composite material may be used to remove acidic or basic impurities from a gas in need thereof and can be easily regenerated.
    Type: Grant
    Filed: July 28, 2017
    Date of Patent: February 15, 2022
    Assignee: NANYANG TECHNOLOGICAL UNIVERSITY
    Inventors: Lan Zhang, Siew Hwa Chan, Ovi Lian Ding, Hongquan He
  • Patent number: 11241669
    Abstract: Disclosed are water-absorbent resin particles comprising a crosslinked polymer comprising a monomer unit derived from a water-soluble ethylenically unsaturated monomer, wherein an initial swelling force as measured according to a swelling force test conducted by a predetermined method is 8 N or more, and further, a ratio of the particles having a particle diameter of more than 250 ?m and 850 ?m or less is 70% by mass or more and a ratio of the particles having a particle diameter of 250 ?m or less is 20% by mass or less, with respect to the total amount of the water-absorbent resin particles.
    Type: Grant
    Filed: March 28, 2018
    Date of Patent: February 8, 2022
    Assignee: SUMITOMO SEIKA CHEMICALS CO., LTD.
    Inventors: Hiroki Yabuguchi, Misaki Taniguchi, Hideki Yokoyama
  • Patent number: 11224854
    Abstract: A porous formed article includes an organic polymer resin and an inorganic ion adsorbent and having the most frequent pore size of 0.08 to 0.70 ?m measured with a mercury porosimeter. Such a porous formed article can be prepared by crushing and mixing a good solvent for the organic polymer resin and the inorganic ion adsorbent to obtain slurry; dissolving the organic polymer resin and a water-soluble polymer in the slurry; shape-forming the slurry; promoting coagulation of the shape-formed product by controlling the temperature and humidity of a spatial portion coming into contact with the shape-formed product, until the shape-formed product is coagulated in a poor solvent; and coagulating the coagulation-promoted shape-formed product in a poor solvent. A production apparatus can be used to prepare such a porous formed article.
    Type: Grant
    Filed: November 11, 2016
    Date of Patent: January 18, 2022
    Assignee: Asahi Kasei Kabushiki Kaisha
    Inventor: Akihiro Omori
  • Patent number: 11224857
    Abstract: A water absorbent agent having a high water absorption multiplying factor where stickiness after absorbing liquid can be reduced when used as a hygienic material is produce by a method for manufacturing the water absorbing agent. The method for manufacturing a water absorbent agent having a centrifuge retention capacity (CRC) of 30 g/g or greater, includes subjecting an aqueous solution of a monomer that includes an acrylic acid (salt) to a polymerization step, a drying step, and a surface cross-linking step, and a step for adding ?-hydroxycarboxylic acid (salt) before the drying step. The atomic weight of the soluble portion eluted when the water absorbent agent absorbs liquid and swells can be reduced by the ?-hydroxycarboxylic acid (salt) before the drying step to reduce the stickiness of the water absorbent agent after absorption of liquid, which leads to discomfort during use of disposable diapers and the like.
    Type: Grant
    Filed: March 28, 2017
    Date of Patent: January 18, 2022
    Assignee: NIPPON SHOKUBAI CO., LTD.
    Inventors: Mariko Tamaki, Kazushi Torii, Hiroyuki Ikeuchi
  • Patent number: 11197784
    Abstract: An absorbent disposable article, such as a diaper, panty diaper, panty liner, sanitary napkin or incontinence device is disclosed. The article has a porous polymer-based structure obtainable by a process of: (a) depositing and photopolymerizing, layer-by-layer in accordance with a predetermined 3D model, an emulsion having an external continuous phase surrounding droplets of an internal phase having has one or more photopolymerizable monomers and/or oligomers and a photopolymerization initiator; and (b) removing the internal phase from the continuous polymer phase formed from the one or more photopolymerizable monomers and/or oligomers. The process produces a monolithic porous structure having three types of pores: (i) pores resulting from the location from which the internal phase was removed, (ii) pores interconnecting the pores according to (i), and (iii) pores as predetermined by the 3D model. The invention also relates to a method of making the article.
    Type: Grant
    Filed: July 6, 2017
    Date of Patent: December 14, 2021
    Assignee: ESSITY HYGIENE AND HEALTH AKTIEBOLAG
    Inventors: Philip Blomström, Peter Rönnberg, Kent Vartiainen, Axel Eriksson, Harald Wutzel
  • Patent number: 11167070
    Abstract: The invention relates to systems and methods for recharging sorbent materials and other rechargeable dialysis components. The systems and methods include rechargers, flow paths, and related components for connecting multiple rechargers together to sharing infrastructure and resources. The rechargeable dialysis components can include zirconium phosphate, zirconium oxide, and other sorbent cartridge materials including any combination thereof or any other rechargeable component of a dialysis system. Additionally, a single-use cartridge or a multi-use cartridge can be used in the present invention.
    Type: Grant
    Filed: December 5, 2017
    Date of Patent: November 9, 2021
    Assignee: Medtronic, Inc.
    Inventor: Martin T. Gerber
  • Patent number: 11141710
    Abstract: An endotoxin adsorbent comprising a crystalline cellulose having a nitrogen atom-containing cationic group can sufficiently remove endotoxin from a material containing endotoxin to be removed and containing a substance having a cationic group and can efficiently remove endotoxin also from a highly viscous material. The nitrogen atom-containing cationic group may be typically a functional group derived from a polyvalent amine and/or a quaternary ammonium salt. The crystalline cellulose having a nitrogen atom-containing cationic group may comprise the nitrogen atom-containing cationic group at a content of 0.05 to 3 meq/dry·g in terms of anion exchange capacity.
    Type: Grant
    Filed: January 22, 2018
    Date of Patent: October 12, 2021
    Assignee: NAGASE CHEMTEX CORPORATION
    Inventors: Daisuke Nakamura, Yuki Maeda
  • Patent number: 11123709
    Abstract: To provide a molded article which can have excellent strength, can also have high durability during repeated use, and can maintain high adsorption performance even when the content of a binder resin is reduced. A molded article containing cerium oxide particles and a binder resin, wherein cerium oxide particles which has an average particle diameter of 1 to 15 ?m and in each of which a crystallite size is 40 to 200 ? are used.
    Type: Grant
    Filed: January 31, 2018
    Date of Patent: September 21, 2021
    Assignee: Mitsui Mining & Smelting Co., Ltd.
    Inventors: Asuka Sasakura, Katsuhiko Hayashi, Atsushi Kurosaki, Masanori Sato, Kazuya Kinoshita, Takahito Asanuma, Seiji Moriuchi
  • Patent number: 11117124
    Abstract: A honeycomb body having a porous ceramic honeycomb structure with a first end, a second end, and a plurality of walls having wall surfaces defining a plurality of inner channels. A highly porous layer is disposed on one or more of the wall surfaces of the honeycomb body. The highly porous layer has a porosity greater than 90%, and has an average thickness of greater than or equal to 0.5 ?m and less than or equal to 10 ?m. A method of making a honeycomb body includes depositing a layer precursor on a ceramic honeycomb body and binding the layer precursor to the ceramic honeycomb body to form the highly porous layer.
    Type: Grant
    Filed: October 31, 2018
    Date of Patent: September 14, 2021
    Assignee: Corning Incorporated
    Inventors: Douglas Munroe Beall, Thorsten Rolf Boger, Dana Craig Bookbinder, Thomas Jean Glasson, Dale Robert Powers, Pushkar Tandon, Jianguo Wang, Huiqing Wu, Xinfeng Xing
  • Patent number: 11084020
    Abstract: A water-absorbent resin that exhibits a high liquid-retention capacity under a load and a small amount of re-wet, even when it is used in an absorbent material having a low proportion of hydrophilic fibers. The water-absorbent resin includes a polymer of a water-soluble ethylenically unsaturated monomer, wherein when a cross-sectional image of the water-absorbent resin is observed using X-ray computed tomography, the water-absorbent resin has cavity area percentage in the cross-sectional image of 10% or less.
    Type: Grant
    Filed: March 2, 2018
    Date of Patent: August 10, 2021
    Assignee: SUMITOMO SEIKA CHEMICALS CO., LTD.
    Inventors: Mikito Chiba, Yuichi Onoda
  • Patent number: 11065558
    Abstract: Provided is a stationary phase for supercritical fluid chromatography, the stationary phase having satisfactory molecule-identifying ability, in particular, satisfactory separating properties with respect to not only acidic compounds or basic compounds but also fused aromatic compounds or aromatic isomers. The stationary phase for supercritical fluid chromatography includes a support having, bonded thereto, a polymer in which the main chain has nitrogenous aromatic rings in the repeating units.
    Type: Grant
    Filed: March 24, 2016
    Date of Patent: July 20, 2021
    Assignee: DAICEL CORPORATION
    Inventors: Kanji Nagai, Satoshi Shinkura
  • Patent number: 11065599
    Abstract: Provided is a resin bead comprising functional groups of structure (S1).
    Type: Grant
    Filed: December 30, 2016
    Date of Patent: July 20, 2021
    Assignees: DDP SPECIALTY ELECTRONIC MATERIALS US, LLC, DDP SPECIALTY ELECTRONIC MATERIALS US 8, LLC
    Inventors: Chang-Soo Lee, Collin H. Martin, Daryl J. Gisch, Christopher R. Eicher
  • Patent number: 11046819
    Abstract: A super absorbent polymer according to the present invention has excellent dryness while maintaining excellent absorption performance, and thus is preferably used for hygienic materials such as diapers, and can exhibit excellent performance.
    Type: Grant
    Filed: December 28, 2016
    Date of Patent: June 29, 2021
    Inventors: Dae Woo Nam, Jun Kyu Kim, Hyung Ki Yoon, Tae Hwan Jang, Bo Hyun Seong, Yeon Woo Hong, Su Jin Kim, Seong Beom Heo, Seon Jung Jung, Ji Yoon Jeong
  • Patent number: 11034800
    Abstract: The present invention relates to a superabsorbent polymer that not only has excellent basic absorption performance, but also exhibits more improved absorption speed, permeability, etc., and a method for preparing the same. The superabsorbent polymer includes a base polymer powder including: a first crosslinked polymer of water soluble ethylenically unsaturated monomers having acid groups of which at least a part are neutralized; and a surface crosslink layer that is formed on the base polymer powder, and further includes a second crosslinked polymer in which the first crosslinked polymer is additionally crosslinked by a C2-5 alkylene carbonate, wherein an absorption degree, SFC, an absorption speed, and a porosity fulfill specific ranges.
    Type: Grant
    Filed: January 11, 2018
    Date of Patent: June 15, 2021
    Inventors: Hyemin Lee, Taebin Ahn, Hyunsup Lee, Yeon Soo Kim
  • Patent number: 11026965
    Abstract: Disclosed herein are cyclodextrin molecules covalently modified to store and release nitric oxide, as well as methods of making and uses thereof. The covalently modified cyclodextrin molecules may be tailored, in several embodiments, to release nitric oxide in a controlled manner and are useful for reduction and/or eradication of bacteria and for the treatment of disease.
    Type: Grant
    Filed: July 1, 2019
    Date of Patent: June 8, 2021
    Assignee: The University of North Carolina at Chapel Hill
    Inventors: Mark H. Schoenfisch, Haibao Jin
  • Patent number: 10981146
    Abstract: The present invention relates to a super-absorbent polymer having excellent properties, both centrifugal retention capacity (CRC) and absorption under pressure (AUP) having been improved by introducing a surface crosslinked layer crosslinked by surface-modified inorganic particles, and to a method for preparing the same. The super-absorbent polymer comprises: a base resin powder containing a crosslinked polymer of water-soluble ethylene-based unsaturated monomers having an at least partially neutralized acidic group; and a surface crosslinked layer formed on the base resin powder, wherein inorganic particles may be chemically bound to the crosslinked polymer contained in the surface crosslinked layer, via an oxygen-containing bond or a nitrogen-containing bond.
    Type: Grant
    Filed: December 29, 2015
    Date of Patent: April 20, 2021
    Inventors: Sung Soo Park, Gi Cheul Kim, Ju Eun Kim, Hyeon Choi, Hyo Sook Joo, Sung Hyun Park, Hee Jung Choi, Ki Youl Yoon