Patents Assigned to Mitsui Chemicals, Inc.
  • Patent number: 10973742
    Abstract: A photocurable composition for manufacturing a dental prosthesis by stereolithography, including: a photopolymerization initiator; and a (meth)acrylic monomer component including an acrylic monomer (X) having no aromatic rings and having a ring structure other than an aromatic ring and two or more acryloyloxy groups in one molecule and having an Mw of from 200 to 800, and at least one of a (meth)acrylic monomer (A) having one or more ether bonds and two (meth)acryloyloxy groups in one molecule and having a defined Mw, a (meth)acrylic monomer (B) having a ring structure other than an aromatic ring and one (meth)acryloyloxy group in one molecule and having a defined Mw, a (meth)acrylic monomer (C) having a hydrocarbon skeleton and two (meth)acryloyloxy groups in one molecule and having a defined Mw, and a (meth)acrylic monomer (D) having one or more aromatic rings and one (meth)acryloyloxy group in one molecule and having a Mw.
    Type: Grant
    Filed: August 2, 2017
    Date of Patent: April 13, 2021
    Assignee: MITSUI CHEMICALS, INC.
    Inventors: Toshikazu Sakamaki, Kouya Kojima, Hirohisa Shiode, Mai Kimura
  • Publication number: 20210101347
    Abstract: This polyamide resin composition contains: 30-89.9 parts by mass of a polyamide resin (A) having a melting point of at least 300° C.; 0-45 parts by mass of a polyamide resin (B) having substantially no melting point; 0.1-5 parts by mass of a light-transmitting pigment (C); and 10-55 parts by mass of a fibrous filler (D) (the total amount of (A), (B), (C), and (D) is 100 parts by mass). The polyamide resin (A) contains at least a terephthalic acid-derived component unit. In a molded body of the polyamide resin composition, the corrected heat of fusion (?HR) is 10-70 J/g, and the transmittance of laser light having a wavelength of 940 nm is at least 15% at a thickness of 1.6 mm.
    Type: Application
    Filed: February 15, 2019
    Publication date: April 8, 2021
    Applicant: MITSUI CHEMICALS, INC.
    Inventors: Kohei NISHINO, Yohei HOTANI, Isao WASHIO
  • Publication number: 20210102239
    Abstract: A method for enabling rapid and accurate determination of the number of bacterial cells in a specimen using a PCR method includes the following steps: (1) a first PCR step of carrying out a PCR method using a nucleic acid derived from a specimen as a template and a universal primer pair for amplifying a bacterial 16S rRNA gene to obtain a first amplification product; (2) a second PCR step of carrying out a nested PCR method using a primer pair(s) for amplifying an internal sequence(s) of the sequence of the first amplification product obtained by the first PCR step to obtain a second amplification product; and (3) a bacterial number determination step of obtaining the number of bacterial cells in the specimen based on the amount of the second amplification product obtained in the second PCR step and using calibration data.
    Type: Application
    Filed: June 21, 2018
    Publication date: April 8, 2021
    Applicants: MITSUI CHEMICALS, INC., NATIONAL UNIVERSITY CORPORATION UNIVERSITY OF TOYAMA
    Inventors: Hideki Niimi, Isao Kitajima, Akio MIYAKOSHI, Yoshitsugu HIGASHI
  • Publication number: 20210087374
    Abstract: Provided is a cyclic olefin-based resin composition for molding containing a resin (A) which contains a structural unit (a1) derived from an ?-olefin and a structural unit (a2) derived from a cyclic olefin, has a glass transition temperature in both a region equal to or lower than 50° C. and a region equal to or higher than 125° C. in a case where the composition is subjected to differential scanning calorimetry, and has a dispersity within a range of 1.0 to 1.6 measured by gel permeation chromatography. Also provided is a molded product formed of the composition and the resin (A).
    Type: Application
    Filed: March 29, 2018
    Publication date: March 25, 2021
    Applicant: Mitsui Chemicals, Inc.
    Inventors: Katsuhiro ESASHIKA, Haruka SAITO
  • Patent number: 10955740
    Abstract: The present invention provides; a pellicle frame which can effectively inhibit distortion of the photo mask (8) caused by mounting the pellicle (1), and which does not have a complex shape, and a pellicle which uses said pellicle frame are provided, and a manufacturing method of a blackened pellicle frame is also provided which can reduce the defect of the surface flickering under concentrated light and which facilitates inspection of the foreign matter adhesion prior to use. The present invention relates to a pellicle frame with an anodized film on a surface of an aluminum alloy frame, characterized in that: the aluminum alloy frame comprises an aluminum alloy which contains Ca: 5.0 to 10.
    Type: Grant
    Filed: June 30, 2017
    Date of Patent: March 23, 2021
    Assignees: NIPPON LIGHT METAL COMPANY, LTD., Mitsui Chemicals, Inc.
    Inventors: Yoshihiro Taguchi, Kazuo Kohmura, Daiki Taneichi
  • Patent number: 10954341
    Abstract: A polymerizable composition for an optical material includes an episulfide compound (A); an organic coloring matter (B); an UV absorber (C); and a polymerization catalyst (D), wherein the organic coloring matter (B) has a main absorption peak (P) between 565 nm and 605 nm in a visible light absorption spectrum, an absorption coefficient (ml/g·cm) of a peak apex (Pmax) exhibiting a maximum absorption coefficient of (P) is equal to or greater than 0.5×105, a peak width in an absorbance of ¼ of an absorbance of (Pmax) of (P) is equal to or less than 50 nm, a peak width in an absorbance of ½ of the absorbance of (Pmax) of (P) is equal to or less than 30 nm, and a peak width in an absorbance of ? of the absorbance of (Pmax) of (P) is in a range of equal to or less than 20 nm.
    Type: Grant
    Filed: September 15, 2016
    Date of Patent: March 23, 2021
    Assignee: MITSUI CHEMICALS, INC.
    Inventors: Naoyuki Kakinuma, Koji Suesugi
  • Publication number: 20210079199
    Abstract: An object of the present invention is to develop an NBR composition excellent in an adhesive strength with a saponified ethylene-vinyl acetate copolymer layer, and a laminate excellent in an adhesive strength of an NBR layer with a saponified ethylene-vinyl acetate copolymer layer; and the present invention relates to an acrylonitrile-butadiene rubber composition comprising an acrylonitrile-butadiene rubber and a silane-modified ethylene-vinyl acetate copolymer of 0 to 50 parts by mass with respect to 100 parts by mass of the acrylonitrile-butadiene rubber, and a laminate comprising an acrylonitrile-butadiene rubber layer comprising the composition and the saponified ethylene-vinyl acetate copolymer layer through an ethylene-vinyl acetate copolymer layer.
    Type: Application
    Filed: March 8, 2019
    Publication date: March 18, 2021
    Applicant: MITSUI CHEMICALS, INC.
    Inventors: Yoshiharu KIKUCHI, Kotaro ICHINO
  • Publication number: 20210079151
    Abstract: A method for setting polymerization condition includes a physical property acquiring step of, when heating a composition including a polymerization-reactive compound and a polymerization catalyst and/or a polymerization initiator and retaining heat at a predetermined temperature, acquiring a physical property value a derived from a functional group before heating of the polymerization-reactive compound and a physical property value b derived from a remaining functional group after maintaining a temperature for a predetermined time; a remaining functional group ratio calculating step of calculating a remaining functional group ratio from the physical property value a and the physical property value b; a reaction rate coefficient calculating step of calculating a reaction rate coefficient from the remaining functional group ratio on the basis of a reaction rate equation; and a polymerization temperature calculating step of calculating a polymerization temperature on the basis of the reaction rate coefficient an
    Type: Application
    Filed: June 6, 2018
    Publication date: March 18, 2021
    Applicant: MITSUI CHEMICALS, INC.
    Inventors: Masayuki FURUYA, Takeshi NISHIMURA, Shinsuke ITO, Tatsuya OGAWA
  • Publication number: 20210077930
    Abstract: A nonwoven fabric, including fibers, in which the fibers have an elongational viscosity, as measured under conditions at an elongational strain rate of 2.5×102 (1/s) and a temperature of 160° C., of from 430 Pa·s to 1200 Pa·s, and a ratio of the elongational viscosity (Pa·s) to a shear viscosity (Pa·s) of the fiber, as measured under conditions at a shear strain rate of 2.5×102 (1/s) and a temperature of 160° C., is from 35 to 65.
    Type: Application
    Filed: October 26, 2018
    Publication date: March 18, 2021
    Applicant: MITSUI CHEMICALS, INC.
    Inventors: Kozo IIBA, Takeshi KIKUTANI, Wataru TAKARADA, Sho HATANO
  • Publication number: 20210080824
    Abstract: A support frame for pellicle is provided including a first support frame part, a second support frame part, and a filter, wherein the filter has a flat plate-shaped frame shape and is sandwiched by the first support frame part and the second support frame part, the first support frame part includes a first body part having a flat plate-shaped frame shape and a first engaging portion protruded from the first body part to a thickness direction of the support frame for pellicle, and the second support frame part includes a second body part having a flat plate-shaped frame shape and a second engaging portion of the second body part engaging with the first engaging portion being arranged in a concave part provided in the thickness direction of the support frame for pellicle.
    Type: Application
    Filed: November 20, 2020
    Publication date: March 18, 2021
    Applicant: MITSUI CHEMICALS, INC.
    Inventors: Akira ISHIKAWA, Atsushi OKUBO, Yosuke ONO, Kazuo KOHMURA
  • Publication number: 20210078901
    Abstract: The purpose of the present invention is to provide a fiber-sizing agent which when applied to an inorganic reinforcement material contained in a resin composition, can provide a molded article having excellent impact resistance and high surface gloss properties. The fiber-sizing agent according to the present invention contains a modified olefin wax (A), a polyolefin resin (B), and a silane-coupling agent (C), wherein the mass ratio (A)/(B) of the modified olefin wax (A) to the polyolefin resin (B) is in the range of 0.2-10.
    Type: Application
    Filed: August 22, 2018
    Publication date: March 18, 2021
    Applicant: MITSUI CHEMICALS, INC.
    Inventors: Hirotaka KANAYA, Kuniaki KAWABE, Yosuke TAKAHASHI, Koji MATSUNAGA, Masaya KUSUMOTO, Takuya TAMURA
  • Patent number: 10950532
    Abstract: A substrate intermediary body includes: a substrate having a hole in a thickness direction, and a conductor being disposed in the hole; and an adhesion layer formed on a wall surface of the hole. The adhesion layer contains a reaction product of a polymer (A) having a cationic functional group and having a weight-average molecular weight of from 2,000 to 1,000,000 and a polyvalent carboxylic acid compound (B) having two or more carboxyl groups per molecule or a derivative thereof.
    Type: Grant
    Filed: December 14, 2015
    Date of Patent: March 16, 2021
    Assignee: MITSUI CHEMICALS, INC.
    Inventors: Yasuhisa Kayaba, Shoko Ono, Hirofumi Tanaka, Koji Inoue, Hiroko Wachi
  • Patent number: 10947652
    Abstract: Apparatus for manufacturing a non-woven fabric includes a diffusing shaft, which includes a first shaft portion in a defined location and provided with a slit-shaped air guide, wherein filaments are supplied together with air from an inlet side of the air guide to an outlet side of the air guide; a second shaft portion in a defined location, having an inlet side that is communicated with an outlet side of the first shaft portion and an outlet side that is disposed to face a filament collecting unit, wherein an opening width along a machine direction of the inlet side of the second shaft portion is larger than an opening width along a machine direction of the first shaft portion; and a stepped portion provided at a connecting portion between the outlet side of the first shaft portion and the inlet side of the second shaft portion and connecting the same.
    Type: Grant
    Filed: March 24, 2017
    Date of Patent: March 16, 2021
    Assignee: MITSUI CHEMICALS, INC.
    Inventors: Shouichi Takaku, Kenichi Suzuki, Naosuke Kunimoto, Atsushi Kawada, Takayuki Tanaka
  • Publication number: 20210068285
    Abstract: A dissimilar material joint including a joined portion between a resin rib and a metal base, in which the metal base forms a protrusion protruding inside of the resin rib on at least a part of the joined portion.
    Type: Application
    Filed: February 26, 2019
    Publication date: March 4, 2021
    Applicant: MITSUI CHEMICALS, INC.
    Inventors: Takahiro TOMINAGA, Kazuki KIMURA, Masaki MISUMI, Nobuyoshi SHINBORI
  • Publication number: 20210054126
    Abstract: A polymerizable composition for an optical material of the present invention includes (A) an allyl carbonate compound represented by General Formula (1) and including two or more allyloxycarbonyl groups; (B) a (meth) acrylate compound represented by General Formula (2) and including two or more (meth) acryl groups; and (C) a photochromic compound, in which, in 100% by weight in a total of the compound (A) and the compound (B), the compound (A) is included in an amount of more than 0% by weight and 30% by weight or less and the compound (B) is included in an amount of 70% by weight or more and less than 100% by weight.
    Type: Application
    Filed: September 28, 2017
    Publication date: February 25, 2021
    Applicant: Mitsui Chemicals, Inc.
    Inventors: Shinichiro Kadowaki, Nobuo Kawato, Masaru Kawaguchi
  • Patent number: 10927213
    Abstract: A method for producing a polyurethane resin includes a reaction step of obtaining a primary product by reacting a polyisocyanate component containing a bis(isocyanatomethyl)cyclohexane with a polyol component containing a low molecular weight polyol having a number average molecular weight of 400 or less and a high molecular weight polyol having an average molecular weight of 2500 or more and 4000 or less under the presence of a bismuth catalyst, and a heat treatment step of heat treating the primary product to obtain a polyurethane resin. The bismuth catalyst content in the polyurethane resin is 0.1 ppm or more and 1000 ppm or less, and the heat treatment conditions in the heat treatment step are 50° C. or more and 100° C. or less and three days or more and ten days or less.
    Type: Grant
    Filed: November 14, 2017
    Date of Patent: February 23, 2021
    Assignee: MITSUI CHEMICALS, INC.
    Inventors: Daisuke Hasegawa, Hiroaki Tago, Masakazu Kageoka, Satoshi Yamasaki
  • Publication number: 20210046731
    Abstract: The breathable sheet of the present invention is comprised of a 4-methyl-1-pentene-based polymer or a resin composition containing the 4-methyl-1-pentene-based polymer as a main component. In addition, the breathable sheet of the present invention is preferably selected from the group consisting of a net, a mesh, a non-woven fabric, a woven fabric, and a perforated sheet.
    Type: Application
    Filed: March 7, 2019
    Publication date: February 18, 2021
    Applicant: MITSUI CHEMICALS, INC.
    Inventors: Shigeo NISHIKAWA, Katsuyuki KAJIHARA, Satoshi NOMA
  • 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: D913504
    Type: Grant
    Filed: March 12, 2019
    Date of Patent: March 16, 2021
    Assignee: Mitsui Chemicals, Inc.
    Inventors: Takashi Yukita, Haruka Sugita, Akira Hasegawa, Hideyuki Nagai, Yasufumi Tsuchiya