Patents Assigned to Mitsubishi Chemical Corporation
  • Toner, Toner Cartridge, and Image-Forming Device
    Publication number: 20230033896
    Abstract: A toner including particles containing a binder resin, a colorant, and wax, the toner having, in differential scanning calorimetry (DSC) performing a temperature program including steps of heating from 40° C. to 100° C. or more at a heating rate of 10° C./min (first heating), then cooling to 40° C. or less at a cooling rate of 10° C./min (first cooling), and then heating to 100° C. or more at a heating rate of 10° C./min (second heating), a total endothermic amount HA1 in the first heating from 40° C. to 100° C. and a total endothermic amount HA2 in the second heating from 40° C. to 100° C. that satisfy the following relationship (1), and a difference between a full width at half maximum of an endothermic peak in the second heating and a full width at half maximum of an exothermic peak in the first cooling of 7.00° C. or less: (1) HA2/HA1>0.80.
    Type: Application
    Filed: September 27, 2022
    Publication date: February 2, 2023
    Applicant: Mitsubishi Chemical Corporation
    Inventor: Shiho Sano
  • Resin Composition, Pre-Preg, Molded Product, and Pre-Preg Manufacturing Method
    Publication number: 20230024268
    Abstract: A resin composition having favorable heat stability while capable of primary curing at 140° C or lower, and having excellent heat resistance after curing, and a pre-preg having excellent heat resistance while a molded product after molding maintains mechanical characteristics are provided. The resin composition of the present invention comprises a constituent element (A): a cyanate ester resin, a constituent element (B): an imidazole compound, and a constituent element (C): silica, in which an average particle size of the silica is 0.4 ?m or less. The pre-preg of the present invention comprises carbon fibers, and the resin composition of the present invention.
    Type: Application
    Filed: September 14, 2022
    Publication date: January 26, 2023
    Applicant: Mitsubishi Chemical Corporation
    Inventor: Atsushi Nohara
  • METHOD FOR PRODUCING ISOBUTYLENE, METHOD FOR PRODUCING METHACRYLIC ACID, AND METHOD FOR PRODUCING METHYL METHACRYLATE
    Publication number: 20230027797
    Abstract: There is provided a method for producing isobutylene, in which isobutylene is produced from isobutanol with a high selectivity while suppressing a decrease in the isobutanol conversion rate under pressure. In the method for producing isobutylene according to the present invention, a raw material gas containing isobutanol is brought into contact with a catalyst to produce isobutylene from isobutanol, the method including bringing the raw material gas containing isobutanol into contact with a catalyst at a linear velocity of 1.20 cm/s or more under a pressure of 120 kPa or more in terms of absolute pressure to produce isobutylene from isobutanol.
    Type: Application
    Filed: September 15, 2022
    Publication date: January 26, 2023
    Applicant: Mitsubishi Chemical Corporation
    Inventors: Tatsuya SUZUKI, Yuuki KATOU, Wataru NINOMIYA
  • Compound and Polymer Composition Including Said Compound
    Publication number: 20230022690
    Abstract: A compound including two or more constituent units derived from a monomer M having a radical polymerizable group and having a radical polymerizable group A at the terminal, in which the monomer M includes a monomer m having a structure that generates an active species by photoexcitation.
    Type: Application
    Filed: September 16, 2022
    Publication date: January 26, 2023
    Applicant: Mitsubishi Chemical Corporation
    Inventors: Kanami Fujita, Mitsunori Sugihara
  • RESIN COMPOSITION, MOLDED OBJECT, MODIFIER FOR POLYAMIDE RESIN, AND METHOD FOR MODIFYING POLYAMIDE RESIN
    Publication number: 20230023558
    Abstract: The resin composition of the present disclosure contains a polyamide resin (A) and a modified ethylene-vinyl alcohol resin (B) grafted with an aliphatic polyester, wherein the content of the modified ethylene-vinyl alcohol resin is 1 part by weight or more and less than 50 parts by weight, when the total content of the polyamide resin (A) and the modified ethylene-vinyl alcohol resin (B) is taken as 100 parts by weight. This resin composition has excellent moldability and has excellent mechanical strength, in particular excellent tensile fracture strain properties, without impairing the transparency and solvent resistance of a molded object obtained from the resin composition.
    Type: Application
    Filed: September 19, 2022
    Publication date: January 26, 2023
    Applicant: Mitsubishi Chemical Corporation
    Inventor: Takuya Ito
  • COPOLYMERIZED POLYCARBONATE RESIN, AND HEAT STORAGE MATERIAL AND HEAT STORAGE MOLDED BODY CONTAINING SAME
    Publication number: 20230024196
    Abstract: A copolymerized polycarbonate resin having, at least, a constituent unit (A) and a constituent unit (B). The constituent unit (A) is derived from a dihydroxy compound. The carbonate constituent unit (B) is derived from a polyoxyalkylene glycol. A weight ratio of the constituent unit (B) derived from a polyoxyalkylene glycol to a weight of the copolymerized polycarbonate resin is preferably more than 20 wt % and 99 wt % or less.
    Type: Application
    Filed: August 30, 2022
    Publication date: January 26, 2023
    Applicant: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Michiaki FUJI, Atsushi FUJIMURA, Kazuki FUKUMOTO, Ryuichi SHIMOGAWA, Hikaru KONDO
  • Polyester Recycling System and Recycling Method
    Publication number: 20230024305
    Abstract: To provide a polyester recycling system including: a functional layer removing means of removing a functional layer from a laminated polyester film including a polyester film having on a surface thereof the functional layer as a recovered waste material, with a cleaning agent dissolving the polyester film; a recovery means of recovering the polyester film, from which the functional layer has been removed; and a production means of producing a recycled polyester product with the recovered polyester film as a raw material.
    Type: Application
    Filed: September 27, 2022
    Publication date: January 26, 2023
    Applicant: Mitsubishi Chemical Corporation
    Inventors: Kazunobu Tada, Toshihiro Hiraki, Tomohiro Suzuki, Kiyonori Kuroda
  • PACKAGE FOR OXYALKYLENE GROUP-CONTAINING PVA-BASED RESIN AND METHOD FOR MANUFACTURING THE SAME
    Publication number: 20230021895
    Abstract: Regarding the oxyalkylene group-containing PVA-based resin, a package which is almost free from a problem associated with viscosity increase during melt-kneading even if the package is stored for a long time period, and a method for manufacturing the package are disclosed. The package comprises a bag having an oxygen permeability of 1000 cc/m2·day·atm or less as an amount of oxygen permeated in 24 hours per 1 m2 of its constituent film under an condition of 25° C. and 65% RH, and an oxyalkylene group-containing PVA-based resin in the bag. The package can suppress the oxidation of the oxyalkylene group-containing PVA and the generation of the carboxyl group-containing compound which may cause to increase viscosity during melt kneading.
    Type: Application
    Filed: September 14, 2022
    Publication date: January 26, 2023
    Applicant: MITSUBISHI CHEMICAL CORPORATION
    Inventor: Tomotake YANO
  • SUPPORT MATERIAL FOR FUSED DEPOSITION MODELING, AND MANUFACTURING METHOD OF FUSED DEPOSITION MODELED STRUCTURE AND THREE-DIMENSIONAL OBJECT USING SAME
    Publication number: 20230023495
    Abstract: Disclosed is a support material for a fused deposition modeling. The support material has excellent adhesion to a variety of model materials and is easily dissolved and removed by washing with water. Also, the waste liquid (PVA-based aqueous solution) generated after the washing operation may be allowed to be drained as it is, in compliance with environmental regulations. The support material comprises (A) PVA-based resin having a group containing sulfonic acid or a salt thereof and (B) biodegradable polyester. The (A) PVA-based resin having a group containing sulfonic acid or a salt thereof and (B) biodegradable polyester have a sea-island structure in which one is dispersed in the other as a matrix.
    Type: Application
    Filed: September 14, 2022
    Publication date: January 26, 2023
    Applicant: MITSUBISHI CHEMICAL CORPORATION
    Inventor: Norihito SAKAI
  • Biomass-resource-derived polyester and production process thereof
    Patent number: 11560449
    Abstract: The present invention provides a resin capable of contributing greatly to solve environmental problems and problems related to exhaustion of fossil fuel resources and having physical properties suited for practical use. The polyester according to the present invention has a diol and a dicarboxylic acid as constituent components and has an amount of terminal acid of 50 equivalents/metric ton or less.
    Type: Grant
    Filed: October 30, 2020
    Date of Patent: January 24, 2023
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Takayuki Aoshima, Yasuaki Miki, Katsuhisa Kumazawa, Satoshi Katou, Tadashi Uyeda, Toyomasa Hoshino, Noboru Shintani, Kenji Yamagishi, Atsushi Isotani
  • Light emitting device and phosphor
    Patent number: 11560516
    Abstract: An object of the present invention is to provide an infrared light-emitting phosphor which emits light in a wavelength range where the sensitivity of a detector is high by combination with a semiconductor light-emitting element that emits light in the visible light region, and to provide an infrared light-emitting device using the infrared light-emitting phosphor. The object can be achieved with a light-emitting device including a semiconductor light-emitting element that emits ultraviolet light or visible light and a phosphor that absorbs ultraviolet light or visible light emitted from the semiconductor light-emitting element and emits light in the infrared region, wherein an emission peak wavelength in the infrared region of the phosphor emitting in the infrared region is from 750 to 1,050 nm, and the half width of an emission peak waveform is more than 50 nm.
    Type: Grant
    Filed: October 2, 2019
    Date of Patent: January 24, 2023
    Assignee: Mitsubishi Chemical Corporation
    Inventor: Byungchul Hong
  • ADHESIVE TAPE
    Publication number: 20230020822
    Abstract: The present invention relates to an adhesive tape having a layer structure in which an adhesive layer, a first film layer (I), a base material layer, and a second film layer (II) are arranged in this order, in which the base material layer satisfies a predetermined requirement that a ratio (a)/(b) of a thickness (a) to a thickness (b) is not less than 1.7 or not more than 0.6 in which the thickness (a) is a thickness from the first film layer (I)-side of the base material layer to the outer surface of the adhesive layer and the thickness (b) is a thickness from the second film layer (II)-side surface of the base material layer to the outer surface of the second film layer (II), and at least one layer constituting the layer structure contains a flame retardant (C).
    Type: Application
    Filed: September 21, 2022
    Publication date: January 19, 2023
    Applicant: MITSUBISHI CHEMICAL CORPORATION
    Inventor: Junichiro SAKAI
  • LIGHT-GUIDING PLATE AND AR DISPLAY
    Publication number: 20230014434
    Abstract: A light-guiding plate includes a resin base having a parallelism P of 5 ?m or less per an area of 50×100 mm2.
    Type: Application
    Filed: September 8, 2022
    Publication date: January 19, 2023
    Applicant: Mitsubishi Chemical Corporation
    Inventors: Haruki KOSHITOUGE, Kazunori UMEDA, Kazuhisa IWASO, Ayaka OGURI, Masahiko ONO, Yukio KATO, Masaki SUGIHARA, Kouji SHIMIZU
  • Method for Manufacturing SMC
    Publication number: 20230021189
    Abstract: A manufacturing method of an SMC of the present invention comprises (i) forming chopped carbon fiber bundles by chopping a continuous carbon fiber bundle having a filament number of NK with a rotary cutter, (ii) fragmentation-processing the chopped carbon fiber bundles by using a fragmentation-processing apparatus comprising a rotating body, (iii) forming a carbon fiber mat by depositing the fragmentation-processed chopped carbon fiber bundles on a carrier film traveling below the rotary cutter, and (iv) impregnating the carbon fiber mat with a thermosetting resin composition, wherein N is 20 or more, and the fragmentation-processing apparatus comprises a first pin roller and a second pin roller which are disposed side by side, each having a rotation axis parallel to a rotation axis direction of the rotary cutter.
    Type: Application
    Filed: September 16, 2022
    Publication date: January 19, 2023
    Applicant: Mitsubishi Chemical Corporation
    Inventors: Hiroyuki Nakao, Yasushi Watanabe, Tadao Samejima, Yukihiro Mizutori
  • RESIN COMPOSITION, METHOD FOR MANUFACTURING RESIN COMPOSITION, MOLDED OBJECT, MULTILAYER STRUCTURE, AND PACKAGING BODY
    Publication number: 20230019812
    Abstract: A resin composition containing: a thermoplastic resin (A) that does not contain a polar group; a thermoplastic resin (B) that contains a polar group; an ethylene-vinyl alcohol copolymer (C) having an ethylene content of 20 to 60 mol %; acetic acid and/or a salt thereof (D); an aliphatic carboxylic acid (E) having 3 or more carbon atoms; and an aliphatic carboxylic acid metal salt (F) that is a metal salt of the aliphatic carboxylic acid (E), wherein the content of (A) is 66 to 99 wt. % with respect to the total sum of contents of the resin composition and the content of (C) is 0.1 to 25 wt. % with respect to the total sum of the contents of the resin composition.
    Type: Application
    Filed: September 13, 2022
    Publication date: January 19, 2023
    Applicant: MITSUBISHI CHEMICAL CORPORATION
    Inventor: Ryohei KOMURO
  • SMC Manufacturing Method
    Publication number: 20230020921
    Abstract: Provided is a useful improvement in a CF-SMC manufacturing technique comprising an SMC manufacturing method using a continuous carbon fiber bundle having a filament number of NK and partially split into n sub-bundles in advance. In the SMC manufacturing method according to the present invention, a fragmentation processing using a fragmentation processing apparatus (A) below is performed on chopped carbon fiber bundles before being deposited on a carrier film. The fragmentation processing apparatus (A) comprises a first pin roller and a second pin roller, each of which has a rotation axis parallel to a rotation axis direction of the rotary cutter. The first pin roller is rotationally driven such that its pins move downward from above on its side facing the second pin roller, and the second pin roller is rotationally driven such that its pins move downward from above on its side facing the first pin roller.
    Type: Application
    Filed: September 15, 2022
    Publication date: January 19, 2023
    Applicant: Mitsubishi Chemical Corporation
    Inventors: Yasushi Watanabe, Tadao Samejima, Yukihiro Mizutori, Junji Kanehagi
  • CATALYST, METHOD FOR PRODUCING ISOBUTYL ALDEHYDE AND METHACROLEIN, METHOD FOR PRODUCING METHACRYLIC ACID, AND METHOD FOR PRODUCING METHACRYLIC ACID ESTER
    Publication number: 20230018899
    Abstract: There is provided a catalyst having an average electronegativity of 2.1 or more and 2.8 or less.
    Type: Application
    Filed: September 9, 2022
    Publication date: January 19, 2023
    Applicants: Mitsubishi Chemical Corporation, NATIONAL UNIVERSITY CORPORATION HOKKAIDO UNIVERSITY
    Inventors: Tatsuya SUZUKI, Yuuki KATOU, Wataru NINOMIYA, Takao MASUDA, Yuta NAKASAKA, Takuya YOSHIKAWA, Shohei YAMASHITA
  • Polyorganosiloxane-containing graft copolymer powder, and resin composition using the same, and molded article formed of the same
    Patent number: 11548968
    Abstract: An object of the present invention is to provide a polyorganosiloxane-containing graft copolymer powder capable of providing a resin composition and a molded article which are excellent in balance between colorability and mechanical properties such as impact resistance. The polyorganosiloxane-containing graft copolymer powder according to the present invention is a graft copolymer powder obtained by graft-polymerizing a mixture (B) of a vinyl monomer (b1) having an epoxy group and another vinyl monomer (b2) to a rubber (A) containing a polyorganosiloxane, wherein the content of the polyorganosiloxane (A1) contained in the rubber (A) is 12 to 50% by mass, the mass average particle diameter of the polyorganosiloxane-containing graft copolymer powder is 300 to 2000 nm, and the epoxy equivalent of the polyorganosiloxane-containing graft copolymer powder is 2500 to 7800 g/eq.
    Type: Grant
    Filed: August 24, 2020
    Date of Patent: January 10, 2023
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Kenta Takemasu, Masahiro Ueda, Shinji Matsuoka, Hiroya Arai, Misaki Hagi, Masashi Iimori
  • RESIN COMPOSITION, METHOD FOR MANUFACTURING RESIN COMPOSITION, MOLDED OBJECT, MULTILAYER STRUCTURE, AND PACKAGING BODY
    Publication number: 20230002603
    Abstract: A resin composition containing: a thermoplastic resin (A) that does not contain a polar group; a thermoplastic resin (B) that contains a polar group; an ethylene-vinyl alcohol copolymer (C) having an ethylene content of 20 to 60 mol %; an aliphatic carboxylic acid (D) having 3 or more carbon atoms; and an aliphatic carboxylic acid metal salt (E) that is a metal salt of the aliphatic carboxylic acid (D), wherein a metal species of (E) is at least one selected from the group consisting of elements belonging to the fourth period d-block in the long periodic table, the content of (A) is 66 to 99 wt. % with respect to the total sum of contents of the resin composition, and the content of (C) is 0.1 to 25 wt. % with respect to the total sum of the contents of the resin composition.
    Type: Application
    Filed: September 13, 2022
    Publication date: January 5, 2023
    Applicant: MITSUBISHI CHEMICAL CORPORATION
    Inventor: Ryohei KOMURO
  • Vibration control and noise insulation material
    Patent number: D976448
    Type: Grant
    Filed: September 1, 2020
    Date of Patent: January 24, 2023
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Katsuhiko Sugiura, Yukio Kato, Hiroshi Mitani, Kazuma Inoue, Naoyuki Uchida, Shogo Koga