Patents Assigned to Mitsui Chemicals, Inc.
  • Patent number: 11292945
    Abstract: An adhesive resin composition of the invention includes an ethylene polymer (A) including an ethylene polymer graft-modified with an unsaturated carboxylic acid or a derivative thereof, and satisfies the following requirements (1) to (4). (1) The melt flow rate (MFR) measured at a temperature of 190° C. and a load of 2160 g in accordance with ASTM D 1238 is 0.1 to 3 g/10 min. (2) The density is 910 to 930 kg/m3. (3) The proportion of fractions that elute at 50° C. and below in crystallization elution fractionation chromatography measurement is not less than 20 mass %. (4) The proportion of fractions that elute at 90° C. and above in crystallization elution fractionation chromatography measurement is not less than 25 mass %.
    Type: Grant
    Filed: April 5, 2019
    Date of Patent: April 5, 2022
    Assignee: MITSUI CHEMICALS, INC.
    Inventors: Akihiko Iwashita, Yoshiyuki Ogawa
  • Patent number: 11292899
    Abstract: An object of the present invention is to provide a highly heat resistant and highly rigid propylene-based polymer having unprecedentedly high stereoregularity. The propylene-based polymer of the present invention satisfies requirements (1) to (4) and preferably requirement (5): (1) an average meso chain length is 800 to 100,000; (2) a MFR is 0.5 to 1,000 g/10 minutes; (3) a ratio of Mw to Mn, Mw/Mn, as measured by GPC is 4.2 to 20; (4) when the ratio of a component which elutes at a temperature of 122° C. or more as measured by temperature rising elution fractionation (TREF) is A % by weight and the melt flow rate of the requirement (2) is B g/10 minutes, 100?A?20×EXP(?0.01×B); (5) an amount of a component soluble in n-decane at 23° C. is 0.01 to 2% by weight.
    Type: Grant
    Filed: June 29, 2018
    Date of Patent: April 5, 2022
    Assignees: MITSUI CHEMICALS, INC., PRIME POLYMER CO., LTD.
    Inventors: Yasuhiro Kai, Naoya Noda, Kenji Michiue, Keita Itakura
  • Patent number: 11294199
    Abstract: This eyewear is provided with: a lens which has an electric element, an electrode of the electric element being disposed at an edge of the lens; a frame which has a control unit for controlling the electric element, and which holds the lens; a conductive wire which has a long conductor surface that extends along and facing such edge, and which is connected to the control unit; and a conductive piece which extends along and facing such edge and which comes into contact with the electrode and the conductor surface.
    Type: Grant
    Filed: September 19, 2018
    Date of Patent: April 5, 2022
    Assignee: Mitsui Chemicals, Inc.
    Inventors: Ryuki Kan, Takafumi Ohto, Osamu Masuda
  • Publication number: 20220098473
    Abstract: A process for producing a polymerizable composition for optical materials of the present invention includes a step A of mixing together a polyisocyanate compound (i), a polymer (ii) represented by General Formula (ii), a photochromic compound (iii), and an internal release agent (iv), a step B of mixing a mixed solution obtained by the step A with a polythiol compound (v), and a step C of further mixing a mixed solution obtained by the step B with a polymerization catalyst (vi) so as to obtain a polymerizable composition for optical materials, wherein in the step A, the internal release agent (iv) is added so that a content thereof in the polymerizable composition for optical materials is 500 to 3,000 ppm, and in the step C, the polymerization catalyst (vi) is added so that a content thereof in the polymerizable composition for optical materials is 120 to 500 ppm.
    Type: Application
    Filed: January 29, 2020
    Publication date: March 31, 2022
    Applicant: MITSUI CHEMICALS, INC.
    Inventors: Yuuki KASORI, Nobuo KAWATO
  • Publication number: 20220098356
    Abstract: A monomer composition, including: an acidic phosphoric acid ester (A); an amine-based catalyst (B); and a (meth)acrylate (E) having at least one of a urethane bond or a —NHC(?S)O— bond.
    Type: Application
    Filed: December 10, 2019
    Publication date: March 31, 2022
    Applicant: MITSUI CHEMICALS, INC.
    Inventor: Naoyuki KAKINUMA
  • Publication number: 20220097311
    Abstract: An aluminum-based metal-resin composite structure (106) includes an aluminum-based metal member (103) in which a dendritic layer (103-2) is formed on at least a part of a surface, and a resin member (105) bonded to the aluminum-based metal member (103) via the dendritic layer (103-2) and formed of a thermoplastic resin composition, in which, when analysis is conducted with a Fourier transform infrared spectrophotometer (FTIR) on a surface (104) of a bonding portion with at least the resin member (105) in the aluminum-based metal member (103) and an absorbance of an absorption peak observed at 3400 cm?1 is defined as A1 and an absorbance at 3400 cm?1 of a straight line connecting an absorbance at 3800 cm?1 and an absorbance at 2500 cm?1 is defined as A0, an absorbance difference (A1?A0) is in a range of 0.03 or less.
    Type: Application
    Filed: January 29, 2020
    Publication date: March 31, 2022
    Applicant: MITSUI CHEMICALS, INC.
    Inventor: Junya SHIMAZAKI
  • Publication number: 20220087906
    Abstract: A photopolymerization initiator including a peroxide, a photobase generator, and a photoradical generator; a photocurable composition; a cured product; and a dental material.
    Type: Application
    Filed: January 17, 2020
    Publication date: March 24, 2022
    Applicant: MITSUI CHEMICALS, INC.
    Inventor: Issei TAKAHASHI
  • Patent number: 11279791
    Abstract: A polymerizable composition for an optical material includes a prepolymer which is a reaction product of a first amine compound (A1) having a weight-average molecular weight of less than 4,000, a first diol compound (B1) having a viscosity (25° C.) of equal to or less than 100 mPa·s, and a polyisocyanate compound (C); and a first polythiol compound (D1), in which the first amine compound (A1) is at least one selected from a polyetheramine and an aromatic amine, and the first polythiol compound (D1) includes a dithiol compound (d1) having two mercapto groups and a polythiol compound (d2) having equal to or more than three mercapto groups.
    Type: Grant
    Filed: March 15, 2019
    Date of Patent: March 22, 2022
    Assignee: MITSUI CHEMICALS, INC.
    Inventor: Akinori Ryu
  • Publication number: 20220081598
    Abstract: An adhesive resin composition including a propylene polymer (A), an ethylene polymer (B), and a thermoplastic resin (C) including a copolymer containing not less than 60 mol % and not more than 99 mol % of structural units derived from 4-methyl-1-pentene, and not less than 1 mol % and not more than 40 mol % of structural units derived from a C2-C20 ?-olefin other than 4-methyl-1-pentene, these structural units representing total 100 mol % of the copolymer, the thermoplastic resin (C) showing a melting point Tm of not more than 199° C. or showing substantially no melting point as analyzed with a differential scanning calorimeter (DSC). The total of the components (A), (B) and (C) includes 45 to 75 parts by mass of the component (A), 5 to 20 parts by mass of the component (B), and 15 to 45 parts by mass of the component (C).
    Type: Application
    Filed: January 6, 2020
    Publication date: March 17, 2022
    Applicant: MITSUI CHEMICALS, INC.
    Inventors: Akihiko IWASHITA, Ryohei SHIGA, Motoyasu YASUI, Yoshisada FUKAGAWA, Kyoko KOBAYASHI, Masahiko OKAMOTO
  • Publication number: 20220087062
    Abstract: A cooling unit (1) includes a resin tray (3), a metal plate (2) provided on one surface of the resin tray (3), and a flow path forming rib (5) provided in a space between the resin tray (3) and the metal plate (2), in which a top surface portion (3b) of a side wall portion (3a) of the resin tray (3) and the metal plate (2) are mechanically fastened via an elastic packing (4), the elastic packing (4) includes a bonding packing which is bonded to the metal plate (2) surface, and a fine uneven structure is formed on the metal plate (2) surface at least on a bonding portion with the bonding packing.
    Type: Application
    Filed: December 25, 2019
    Publication date: March 17, 2022
    Applicant: MITSUI CHEMICALS, INC.
    Inventors: Mizue KURIYAGAWA, Kazuki KIMURA, Shinji NAKAJIMA, Takahiro TOMINAGA
  • Publication number: 20220081814
    Abstract: A spunbonded non-woven fabric includes a fiber including a propylene homopolymer having a melting point of 140° C. or more, a polyethylene having a density of from 0.941 g/cm3 to 0.970 g/cm3, and at least one polymer selected from the group consisting of a polymer represented in (I) and a polymer represented in (II). In the spunbonded non-woven fabric, the fiber includes a sea-island structure, and the percentage of an island phase having a diameter of from 0.12 ?m to less than 0.63 ?m with respect to an island phase in a cross section orthogonal to the axis direction of the fiber on a number basis is 30% or more. (I) represents a random copolymer of propylene and at least one selected from ethylene or an ?-olefin having a carbon number of from 4 to 20. (II) represents a propylene homopolymer with a melting point of less than 120° C.
    Type: Application
    Filed: January 30, 2020
    Publication date: March 17, 2022
    Applicant: MITSUI CHEMICALS, INC.
    Inventors: Taiichiro ICHIKAWA, Akio MATSUBARA, Koichi SHIMADA, Shigeyuki MOTOMURA
  • Publication number: 20220073659
    Abstract: The present invention provides a 4-methyl-1-pentene/?-olefin copolymer being excellent in lightness, stress absorption, stress relaxation, vibration damping properties, scratch resistance, abrasion resistance, toughness, mechanical properties and flexibility, having no stickiness during molding operation and being excellent in the balance among these properties; a composition comprising the polymer; and uses thereof. The 4-methyl-1-pentene/?-olefin copolymer (A) of the present invention satisfies specific requirements, and comprises 5 to 95 mol % of a structural unit (i) derived from 4-methyl-1-pentene, 5 to 95 mol % of a structural unit (ii) derived from at least one kind of ?-olefin selected from ?-olefins having 2 to 20 carbon atoms excluding 4-methyl-1-pentene and 0 to 10 mol % of a structural unit (iii) derived from a non-conjugated polyene, provided that the total of the structural units (i), (ii), and (iii) is 100 mol %.
    Type: Application
    Filed: November 17, 2021
    Publication date: March 10, 2022
    Applicant: MITSUI CHEMICALS, INC.
    Inventors: Takayuki UEKUSA, Masahiko OKAMOTO, Yoshisada TAMO
  • Publication number: 20220064369
    Abstract: A cyclic olefin copolymer for a medical instrument has an aromatic ring and contains at least one structural unit (A) of the specific formulas (Ia), (II), and (III).
    Type: Application
    Filed: December 17, 2019
    Publication date: March 3, 2022
    Applicant: MITSUI CHEMICALS, INC.
    Inventors: Jiacheng HE, Hideki WASA, Futoshi FUJIMURA, Haruka SAITO, Sunil Krzysztof MOORTHI
  • Publication number: 20220063185
    Abstract: This manufacturing method for a resin molded body includes: a step in which an intermediate molded body made of a resin composition is prepared, the intermediate molded body having a rough surface with a maximum peak height (Rp) of 10-5000 ?m measured according to JIS B 0601 or a maximum valley depth (Rv) of 10-5000 ?m measured according to JIS B 0601; and a step in which a thin film-like molded body is fused to the rough surface of the intermediate molded body by irradiation with a laser, the thin film-like molded body being made of a resin composition containing reinforcing fibers arranged in one direction.
    Type: Application
    Filed: December 25, 2019
    Publication date: March 3, 2022
    Applicant: MITSUI CHEMICALS, INC.
    Inventors: Takeharu ISAKI, Shunsuke FUJII
  • Patent number: 11264589
    Abstract: The image display device sealing material contains a resin component and a curing agent, wherein the resin component contains biphenyl skeleton-containing epoxy resin having a weight-average molecular weight of 200 or more and 100,000 or less, alicyclic skeleton-containing epoxy resin having a weight-average molecular weight of 180 or more and 790 or less, and styrene oligomer having a weight-average molecular weight of 750 or more and 4000 or less.
    Type: Grant
    Filed: June 19, 2018
    Date of Patent: March 1, 2022
    Assignee: MITSUI CHEMICALS, INC.
    Inventors: Yusuke Tomita, Masatoshi Takagi, Yugo Yamamoto
  • Patent number: 11254904
    Abstract: A culture material including a 4-methyl-1-pentene polymer for cells, tissues, or organs, the culture material having a water contact angle at a culture surface of 50° to 100°, a sagging distance by a test method described below of 0 to 5 mm, and an oxygen permeation rate at a temperature of 23° C. and a humidity of 0% of 4500 to 90000 cm3/(m2×24 h×atm). A test piece having the same material as the culture material and the same thickness as the culture surface of the culture material and having a flat plate shape of 100 mm long and 10 mm wide is made. The test piece is fixed onto a test board in a state where the test piece protrudes lengthwise in a horizontal direction from a top surface of the test board, the top surface being horizontal.
    Type: Grant
    Filed: June 18, 2020
    Date of Patent: February 22, 2022
    Assignee: MITSUI CHEMICALS, INC.
    Inventors: Makoto Kiya, Hiroshi Miyasako, Katsutoshi Kinoshita, Tomoaki Matsugi, Takashi Oda, Katsuhiro Esashika
  • Patent number: 11254791
    Abstract: In a polyurethane gel 1 including a gel layer 2 and a coat layer 3 covering the gel layer 2, the gel layer 2 is produced by allowing at least aliphatic polyisocyanate having an average functionality of more than 2.0 to react with polyol having an average functionality of 3.0 or less, and the coat layer 3 is produced by allowing at least aliphatic diisocyanate and/or alicyclic diisocyanate to react with bifunctional active hydrogen compound.
    Type: Grant
    Filed: July 8, 2016
    Date of Patent: February 22, 2022
    Assignee: Mitsui Chemicals, Inc.
    Inventors: Daisuke Hasegawa, Masakazu Kageoka, Toshihiko Nakagawa, Goro Kuwamura, Hirokazu Morita, Satoshi Yamasaki
  • Patent number: 11253341
    Abstract: A dental coupling member related to a first aspect of the invention comprises: a rod having, at one end region, a first coupling part that is coupled to a first attachment part of a first dental tool, and having a screw part at the other end region; and a cylindrical body having, in an inner circumferential surface of one end region, a screwed part into which the screw part is screwed, and having, at the other end region, a second coupling part that is coupled to a second attachment part of a second dental tool. This dental coupling member comprises a different-torque part at the screw part and/or the screwed part, the different-torque part having a different torque for screwing against the other of the screw part and the screwed part. This dental coupling member suppresses the occurrence of loosening between the screw part and the screwed part.
    Type: Grant
    Filed: October 12, 2017
    Date of Patent: February 22, 2022
    Assignees: Mitsui Chemicals, Inc., Takashima Sangyo Co., Ltd.
    Inventors: Takashi Yukita, Hideyuki Nagai, Yasufumi Tsuchiya, Daigo Hama, Kohei Yazaki, You Sato, Junji Oowa
  • Patent number: 11254783
    Abstract: A xylylenediisocyanate composition including xylylenediisocyanate and a compound represented by Chemical Formula (1) below, wherein 0.
    Type: Grant
    Filed: February 25, 2020
    Date of Patent: February 22, 2022
    Assignee: MITSUI CHEMICALS, INC.
    Inventors: Satoshi Yamasaki, Daisuke Hasegawa, Hirokazu Morita, Hideaki Otsuka, Tatsuya Nakashima, Chitoshi Shimakawa, Shigetoshi Kuma, Masaaki Sasaki
  • Publication number: 20220050379
    Abstract: A material for forming an underlayer film used in a multi-layer resist process satisfies: (i) an elemental composition ratio Re defined by the following mathematical formula (1) is 1.5 to 2.8; (ii) a glass transition temperature is 30° C. to 250° C.; and (iii) the material contains at least one (preferably two or more) resin having a specific structural unit. In the mathematical formula (1), NH is the number of hydrogen atoms in the solid content of the material for forming an underlayer film, NC is the number of carbon atoms in the solid content of the material for forming an underlayer film, and NO is the number of oxygen atoms in the solid content of the material for forming an underlayer film.
    Type: Application
    Filed: January 22, 2020
    Publication date: February 17, 2022
    Applicant: MITSUI CHEMICALS, INC.
    Inventors: Koji INOUE, Keisuke KAWASHIMA, Kenichi FUJII, Takashi ODA