Patents Assigned to Mitsui Chemicals, Inc.
  • Patent number: 10919997
    Abstract: The purpose of the present invention is to obtain an ethylene.?-olefin.non-conjugated polyene copolymer that has a low permanent compression set at low temperatures, is flexible, and has an excellent balance of rubber elasticity at low temperatures and tensile strength at normal temperatures. This ethylene-based polymer is an ethylene.?-olefin.non-conjugated polyene copolymer that includes units derived from ethylene (A), units derived from an ?-olefin (B) containing 4-20 carbon atoms, and units derived from a non-conjugated polyene (C) and satisfies (1)-(4). (1) The molar ratio of (A) to (B) is 40/60-90/10, (2) the contained amount of the units derived from (C) is 0.1-6.0 mol %, (3) ML(1+4)125° C. is 5-100, and (4) the B value is 1.20 or more.
    Type: Grant
    Filed: February 10, 2015
    Date of Patent: February 16, 2021
    Assignee: MITSUI CHEMICALS, INC.
    Inventors: Koji Endo, Mayumi Hiwara, Sadahiko Matsuura, Yusuke Mizobuchi, Yuichi Yamamura, Yuji Noguchi, Yuji Ishii, Tatsuya Sakai, Keisuke Shishido, Kotaro Ichino, Kiyohide Inomata, Fumito Takeuchi, Kenta Ide
  • Patent number: 10921489
    Abstract: A polymerizable composition for an optical material according to the present invention, including: a monomer mixture (A) including a polymerizable monomer having a (meth) acrylic group, a photochromic compound (B) which is at least one selected from compounds represented by Formulae (1) and (2); and an ultraviolet absorbing agent (C) which is at least one selected from compounds represented by Formulae (a) to (c).
    Type: Grant
    Filed: September 16, 2016
    Date of Patent: February 16, 2021
    Assignee: MITSUI CHEMICALS, INC.
    Inventors: Masaru Kawaguchi, Nobuo Kawato
  • Patent number: 10920349
    Abstract: A multilayer nonwoven fabric includes: an elastic nonwoven fabric containing a specific low crystalline polypropylene; and a mixed fiber spunbonded nonwoven fabric disposed on at least one surface of the elastic nonwoven fabric, wherein the mixed fiber spunbonded nonwoven fabric contains a long fiber of a thermoplastic elastomer (A) and a long fiber of a thermoplastic elastomer (B) other than the thermoplastic elastomer (A), in a ratio of 10 to 90% by mass:90 to 10% by mass ((A):(B), with the proviso that (A)+(B)=100% by mass).
    Type: Grant
    Filed: March 9, 2016
    Date of Patent: February 16, 2021
    Assignee: MITSUI CHEMICALS, INC.
    Inventors: Koichi Shimada, Kenichi Suzuki, Shouichi Takaku
  • Publication number: 20210041599
    Abstract: The plastic polarizing lens of the present invention includes a polarizing film comprised of a thermoplastic resin; a first resin substrate composed of at least one layer stacked over a surface of the polarizing film which is located on an object-facing surface side; and a second resin substrate composed of at least one layer stacked over a surface of the polarizing film which is located on an eye-facing surface side, in which an organic colorant compound is included in at least one layer constituting the first resin substrate out of the first resin substrate and the second resin substrate, and the concentration of the organic colorant compound in the first resin substrate is higher than the concentration of the organic colorant compound in the second resin substrate.
    Type: Application
    Filed: April 1, 2019
    Publication date: February 11, 2021
    Applicants: HOPNIC LABORATORY CO., LTD., MITSUI CHEMICALS, INC.
    Inventor: Yoshimitsu AIISO
  • Publication number: 20210043972
    Abstract: A nonaqueous electrolytic solution for a battery, for use in a battery including an aluminum-containing positive electrode current collector, includes an electrolyte that includes a compound represented by the following Formula (1), and an additive A that is a fluorine-containing compound other than compounds represented by Formula (1). The concentration of the compound represented by Formula (1) is from 0.1 mol/L to 2.0 mol/L. In Formula (1), each of le and R2 independently represents a fluorine atom, a trifluoromethyl group, or a pentafluoroethyl group.
    Type: Application
    Filed: January 24, 2019
    Publication date: February 11, 2021
    Applicant: MITSUI CHEMICALS, INC.
    Inventors: Kei SUGAWARA, Satoko FUJIYAMA, Hitoshi ONISHI
  • Publication number: 20210038353
    Abstract: The present invention provides a photocurable composition for use in stereolithography, the photocurable composition including: a (meth)acrylic monomer (X) that is at least one selected from the group consisting of di(meth)acrylic monomers containing, within one molecule, two aromatic rings and two (meth)acryloyloxy groups, and that has a weight average molecular weight of from 400 to 580; a (meth)acrylic monomer (D) that is at least one selected from the group consisting of (meth)acrylic monomers containing, within one molecule, at least one aromatic ring and one (meth)acryloyloxy group, and that has a weight average molecular weight of from 140 to 350; and a photopolymerization initiator.
    Type: Application
    Filed: March 29, 2018
    Publication date: February 11, 2021
    Applicant: Mitsui Chemicals, Inc.
    Inventor: Toshikazu SAKAMAKI
  • Publication number: 20210043928
    Abstract: A positive electrode for a lithium ion secondary battery, including a positive electrode current collector; and a positive electrode mixture layer that is provided on at least one side of the positive electrode current collector, the positive electrode mixture layer including a positive electrode active material layer, and an undercoat layer formed between the positive electrode current collector and the positive electrode active material layer, the undercoat layer containing a conductive auxiliary, a binder, and a thermally expandable microcapsule having a maximum volume expansion temperature of from 70° C. to 180° C.
    Type: Application
    Filed: March 29, 2019
    Publication date: February 11, 2021
    Applicant: MITSUI CHEMICALS, INC.
    Inventors: Shinji YAMAMOTO, Yuri ENDO
  • Publication number: 20210043971
    Abstract: A nonaqueous electrolytic solution for a battery, the solution including: an additive A that is a compound (A); an additive B that is at least one selected from the group consisting of lithium monofluorophosphate and lithium difluorophosphate; an additive C that is a compound (C); and an electrolyte that is a lithium salt other than the additive A, the additive B, or the additive B. R1 represents a C1-6 hydrocarbon group substituted with F, a C1-6 hydrocarbonoxy group substituted with F, or F. M represents B or P. Each X represents a halogen. Each R represents a C1-10 alkylene, a C1-10 haloalkylene, a C6-20 arylene, or a C6-20 haloarylene (R may contain a substituent or a hetero atom within the structure). m represents 1 to 3. n represents 0 to 4. q represents 0 or 1.
    Type: Application
    Filed: March 27, 2018
    Publication date: February 11, 2021
    Applicant: Mitsui Chemicals, Inc.
    Inventors: Satoko FUJIYAMA, Kei SUGAWARA, Hitoshi ONISHI
  • Patent number: 10913878
    Abstract: A method of producing a laminate comprising a heat treatment step under a temperature condition of 80-140° C. for 5-120 minutes, wherein the laminate satisfies the following requirements: (1) an adhesive layer (I) with 97-70% by weight of a propylene copolymer (A) and 3-30% by weight of a copolymer (B) having a structural unit derived from butane (100% by weight); (2) the copolymer (A) has a melting point within a specific range and includes less than 1 mol % of structural unit from butane; (3) the copolymer (B) has a melting point within a specific range and includes 1 mol % or more of structural unit from butane; (4) the adhesive layer (I) has a polymer (C) with a structural unit from at least one graft monomer selected unsaturated carboxylic acids and derivatives thereof, and, (5) a substrate layer (II) includes a polyester resin.
    Type: Grant
    Filed: March 22, 2018
    Date of Patent: February 9, 2021
    Assignee: MITSUI CHEMICALS, INC.
    Inventors: Takahiro Maeda, Yoshiyuki Ogawa
  • Patent number: 10912341
    Abstract: A knee supporter, including a tubular supporter main body including: a knee anterior surface part; a knee posterior surface part; a femoral side anterior surface part; a femoral side posterior surface part; a tibial side anterior surface part; and a tibial side posterior surface part, wherein elastic moduli, in an axial direction of the tubular supporter main body, when stretched by 80% in the axial direction of the tubular supporter main body, satisfy the following Formula (1) to (3): Formula (1): 0.7?knee posterior surface part/knee anterior surface part; Formula (2): 1<femoral side anterior surface part/femoral side posterior surface part; and Formula (3): 1<tibial side anterior surface part/tibial side posterior surface part.
    Type: Grant
    Filed: February 6, 2017
    Date of Patent: February 9, 2021
    Assignee: MITSUI CHEMICALS, INC.
    Inventors: Tomoaki Ito, Aya Takeuchi, Kenji Iida, Motoyasu Yasui, Shiori Ito, Kazuoki Nakai, Fumihiko Kokido, Fumiaki Saikawa
  • Patent number: 10913251
    Abstract: A buffer material including a skinned polyurethane foam including a foam layer and a skin layer formed on the surface of the foam layer, wherein the skinned polyurethane foam essentially contains no silicone compound, the foam layer is polyurethane foam, the skin layer is a polyurethane resin layer produced by reaction of a skin-isocyanate component containing an aliphatic and/or an alicyclic polyisocyanate with a skin-active hydrogen group-containing component, the skin layer has a storage modulus at 23° C. (E?coat) of 1×107 Pa or more and 3×108 Pa or less, the foam layer has a storage modulus at 23° C. (E?foam) of 1×105 Pa or more and 5×106 Pa or less, and the ratio (E?coat/E?foam) of the storage modulus at 23° C. (E?coat) of the skin layer relative to the storage modulus at 23° C. (E?foam) of the foam layer is 10 or more and 500 or less.
    Type: Grant
    Filed: September 1, 2016
    Date of Patent: February 9, 2021
    Assignee: MITSUI CHEMICALS, INC.
    Inventors: Hiroshi Kanayama, Minoru Watanabe, Makoto Kajiura, Satoshi Yamasaki
  • Publication number: 20210030882
    Abstract: A bis-iminobiotin compound which has a structure that enables the easy bonding of a bis-iminobiotin moiety to a drug or a fluorescent compound and is useful for the delivery of a drug to a streptavidin-labeled substance. The bis-iminobiotin compound is represented by general formula 9. In the formula, A, D and E independently represent a spacer capable of bonding two bicyclo rings to each other, wherein E represents a structure that may be branched, each of A, D and E may have a substituent, and A, D and E may together form a cyclic structure; J represents a functional group for achieving a click reaction; G represents a spacer capable of bonding E to J; and R represents a hydrogen atom, an acetyl group, a benzyl group, a trifluoroacetyl group or a Boc group.
    Type: Application
    Filed: March 29, 2019
    Publication date: February 4, 2021
    Applicants: Mitsui Chemicals, Inc., The University of Tokyo, Savid Therapeutics Inc.
    Inventors: Tsuneji SUZUKI, Kosuke MANO, Yoshiyuki TOTANII, Yohei SHIMIZU, Akira SUGIYAMA, Masanobu TSUKAGOSHI
  • Publication number: 20210031418
    Abstract: A method for producing an injection molded article including a highly-filled fiber-reinforced resin composition includes a step of charging a first resin feedstock including a thermoplastic polymer into an injection molding machine through a first inlet port; a step of charging a second resin feedstock into the injection molding machine through a second inlet port disposed downstream of the first inlet port, the second resin feedstock including a masterbatch that includes long fibers impregnated with a resin mixture including a thermoplastic polymer and an acid-modified polyolefin; a step of melt-kneading the first resin feedstock and the second resin feedstock together in the injection molding machine to give a fiber-reinforced resin composition melt; and a step of injection molding the fiber-reinforced resin composition melt in a mold, the first resin feedstock being charged intermittently or continuously from the start to the end of the charging of the second resin feedstock.
    Type: Application
    Filed: March 27, 2019
    Publication date: February 4, 2021
    Applicants: MITSUI CHEMICALS, INC, UBE MACHINERY CORPORATION, LTD.
    Inventors: Toshio IWATA, Tsubasa TORIGOE, Daisuke FUJITA
  • Publication number: 20210032397
    Abstract: A 4-methyl-1-pentene polymer particle (X) which satisfies the following requirements (X-a), (X-b) and (X-c): (X-a) being composed of a 4-methyl-1-pentene polymer which has a content of a constitutional unit derived from 4-methyl-1-pentene being 30.0 to 99.7% by mol, and a content of a constitutional unit derived from at least one olefin selected from ethylene and an ?-olefin having 3 to 20 carbon atoms (except for 4-methyl-1-pentene) being 0.3 to 70.0% by mol; (X-b) having, when measured in a cross fractionation chromatograph apparatus (CFC) using an infrared spectrophotometer as a detector part, at least one peak A of an amount of a component eluted present in the range of 100 to 140° C., and at least one peak B of an amount of a component eluted present at lower than 100° C.; and (X-c) having a meso diad fraction (m) measured by 13C-NMR falling within the range of 95.0 to 100%.
    Type: Application
    Filed: April 9, 2019
    Publication date: February 4, 2021
    Applicant: MITSUI CHEMICALS, INC.
    Inventors: Masakazu TANAKA, Toyoaki SASAKI, Tomoaki MATSUGI, Sadahiko MATSUURA, Naoto MATSUKAWA, Masatoshi CHINAKA
  • Publication number: 20210023260
    Abstract: The application discloses a composition for hard tissue repair comprising a monomer (A), a polymer powder (B) and a polymerization initiator (C), wherein the polymer powder (B) comprises a polymer powder (B-x) having an aspect ratio of 1.10 or more, and the cumulative ratio of powder particles having aspect ratios of 1.00 or more and less than 1.10 in all of the powder particles contained in the composition for hard tissue repair is 75 cumulative % or less, as well as, a kit for hard tissue repair comprising three or more members, in which each of the components of the monomer (A), the polymer powder (B) and the polymerization initiator (C) contained in this composition for hard tissue repair are divided and contained in the members in an optional combination.
    Type: Application
    Filed: March 5, 2019
    Publication date: January 28, 2021
    Applicant: MITSUI CHEMICALS, INC.
    Inventors: Shinya AOKI, Jingjing YANG, Aya NAKAGAWA, Kengo GOTO, Takashi MIURA, Ayako BANDO
  • Publication number: 20210024791
    Abstract: The present invention provides a mask adhesive that plastically deforms easily, no adhesive residue remains after peeling from the mask, ease of handling is excellent, and haze on a pellicle film is unlikely to be increased. A mask adhesive resolving this problem contains a thermoplastic elastomer (A) for which the temperature at which the loss tangent measured at a frequency of 1 Hz is at a maximum value is ?20 to 30° C., a tackifier resin (B), and a process oil (C). The total of the proportion (% CP) of paraffin carbon and the proportion (% CN) of naphthene carbon in the process oil (C) is 50% or more. The temperature of the mask adhesive at which the loss tangent measured at a frequency of 1 Hz is at a maximum value is ?10 to 30° C., and the sulfur content of the mask adhesive is 300 ?g/g or less.
    Type: Application
    Filed: March 27, 2019
    Publication date: January 28, 2021
    Applicant: MITSUI CHEMICALS, INC.
    Inventors: Tsuneaki BIYAJIMA, Daiki TANEICHI
  • Publication number: 20210024675
    Abstract: The optical lens of the present invention contains a molded product constituted with a cyclic olefin-based copolymer having a constitutional unit (A) derived from an ?-olefin having 2 to 20 carbon atoms, a constitutional unit (B) derived from a cyclic olefin, and a constitutional unit (C) derived from an aromatic vinyl compound represented by a specific chemical formula.
    Type: Application
    Filed: March 15, 2019
    Publication date: January 28, 2021
    Applicant: MITSUI CHEMICALS, INC.
    Inventors: Hideki WASA, Sunil Krzysztof MOORTHI, Haruka SAITO, Futoshi FUJIMURA
  • Patent number: 10899896
    Abstract: Disclosed are: a reinforcing fiber bundle with excellent mechanical property and handling property, which contains a propylene-based resin (A), a propylene-based resin (B) comprising at least a carboxylic acid salt bonded to the polymer chain, and a reinforcing fiber (C) wherein the propylene-based resin (A) comprises more than 70% by mass but not more than 100% by mass of a component (A-1) having a weight average molecular weight of 150,000 or more, the amount of the propylene-based resin (B) is 3 to 50 parts by mass per 100 parts by mass of the propylene-based resin (A), and the total content rate of the propylene-based resin (A) and the propylene-based resin (B) is 0.3 to 5% by mass in the whole reinforcing fiber bundle; and a molding material comprising the reinforcing fiber bundle and a matrix resin.
    Type: Grant
    Filed: April 19, 2017
    Date of Patent: January 26, 2021
    Assignee: MITSUI CHEMICALS, INC.
    Inventors: Yasushi Mizuta, Takeharu Isaki, Masako Yoshida, Yuichi Itou
  • Patent number: 10899094
    Abstract: A method of manufacturing a plastic lens includes: a step of putting a first curable composition over a forming surface of a first mold substrate having the forming surface for forming a lens surface; a step of spreading the first curable composition over the entire forming surface by pressing the composition with a film to form a first curable composition layer and separating the film from the first mold substrate by a predetermined distance through the formed first curable composition layer; a step of covering defined surfaces; a step of injecting a second curable composition into a defined location; a step of curing the first curable composition layer and the injected second curable composition; and a step of removing to obtain a plastic lens.
    Type: Grant
    Filed: January 14, 2016
    Date of Patent: January 26, 2021
    Assignees: HOPNIC LABORATORY CO., LTD., MITSUI CHEMICALS, INC.
    Inventor: Yoshimitsu Aiiso
  • Publication number: 20210017128
    Abstract: A method for producing an organic mercapto compound or an intermediate thereof according to the present invention has a reaction step of reacting an alcohol compound including a sulfur atom with a thioamide compound having a structure in which an organic group is bonded to at least one bonding hand of a thioamide group, under acidic conditions.
    Type: Application
    Filed: March 29, 2019
    Publication date: January 21, 2021
    Applicant: MITSUI CHEMICALS, INC.
    Inventors: Hironori KUBOI, Kaoru OHSHIMIZU