Patents Assigned to Mitsubishi Gas Chemical Company, Inc.
  • Patent number: 12129230
    Abstract: Provided is a dialkyl carbonate production method that enables a dialkyl carbonate to be produced in a simple manner and in a short reaction time and enables easy processing of by-products. This dialkyl carbonate production method involves generation reaction of a carbonate ester through reaction between carbon dioxide and an alcohol represented by formula (1), wherein the generation reaction of a carbonate ester is performed in the presence of a carbodiimide compound represented by formula (2) (R1-R3 in the formula are as described in the description of the present application).
    Type: Grant
    Filed: December 4, 2019
    Date of Patent: October 29, 2024
    Assignee: MITSUBISHI GAS CHEMICAL COMPANY, INC.
    Inventors: Hongyu Liu, Takehiko Isobe, Yousuke Shinkai, Hidefumi Harada
  • Patent number: 12133339
    Abstract: A resin composition of the present invention contains: a maleimide compound (A) having a transmittance of 5% or more at a wavelength of 405 nm (h-line); a particular carboxylic acid containing compound (B); and a photo initiator (C) having an absorbance of 0.1 or more at a wavelength of 405 nm (h-line).
    Type: Grant
    Filed: January 17, 2020
    Date of Patent: October 29, 2024
    Assignee: MITSUBISHI GAS CHEMICAL COMPANY, INC.
    Inventors: Yune Kumazawa, Takuya Suzuki, Seiji Shika
  • Patent number: 12129357
    Abstract: Provided is a cellulose solution (a composition) in which decomposition of cellulose does not easily proceed even if heated. Further, provided is a method for producing a cellulose fiber excellent in mechanical strength. The composition includes cellulose and a compound represented by the following formula (1), a concentration of 1-methylimidazolium chloride being 300 ppm or less on a mass basis with respect to the compound represented by the formula (1). In the formula (1), R is an alkyl group having 2 to 6 carbon atoms, and Me is a methyl group.
    Type: Grant
    Filed: April 21, 2020
    Date of Patent: October 29, 2024
    Assignee: MITSUBISHI GAS CHEMICAL COMPANY, INC.
    Inventors: Kimihiro Aoyama, Tetsuhiko Mizusaka, Yasuyoshi Nakayasu, Yasuo Gotoh
  • Publication number: 20240351770
    Abstract: A fruit and vegetable package includes at least one fruit and/or vegetable, at least one atmosphere conditioner package, and a packaging material for accommodating them, and the atmosphere conditioner package has an oxygen absorption capacity, a carbon dioxide absorption capacity, and a moisture generation capacity .
    Type: Application
    Filed: August 19, 2022
    Publication date: October 24, 2024
    Applicant: MITSUBISHI GAS CHEMICAL COMPANY, INC.
    Inventor: Ken SUGIMOTO
  • Publication number: 20240343854
    Abstract: A method for producing an oxymethylene copolymer includes copolymerizing trioxane and a comonomer copolymerizable with the trioxane in a presence of a cationic polymerization catalyst and a polymerization controlling agent, wherein the polymerization controlling agent is a cyclic ether with a 4- or more-membered ring containing one oxygen atom.
    Type: Application
    Filed: August 17, 2022
    Publication date: October 17, 2024
    Applicant: MITSUBISHI GAS CHEMICAL COMPANY, INC.
    Inventor: Mika NAKASHIMA
  • Patent number: 12116338
    Abstract: Provided are a novel aldehyde compound suitable for a fragrance and a fragrance ingredient, or a raw material thereof, and a method for producing the aldehyde compound, as well as a fragrance composition containing the aldehyde compound as an active ingredient, and use of the aldehyde compound as a fragrance. A compound represented by Formula (1): where in Formula (1), R is a hydrogen atom or a methyl group.
    Type: Grant
    Filed: October 16, 2020
    Date of Patent: October 15, 2024
    Assignee: MITSUBISHI GAS CHEMICAL COMPANY, INC.
    Inventors: Toru Shishimi, Yutaka Matsuura, Shinichi Nagao
  • Patent number: 12119277
    Abstract: A method for producing a package substrate for mounting a semiconductor device includes: forming a first substrate by forming a laminate in which a first metal layer that has a thickness of 1 ?m to 70 ?m and that is peelable from a core resin layer, a first insulating resin layer, and a second metal layer are arranged on both sides of the core resin layer having a thickness of 1 ?m to 80 ?m, and heating and pressurizing the laminate simultaneously; forming a pattern on the second metal layer; forming a second substrate by heating and pressurizing a laminate formed by arranging a second insulating resin layer and a third metal layer on a surface of the second metal layer; and peeling, from the core resin layer, a third substrate including the first metal and insulating resin layers, the second metal and insulating layers, and the third metal layer.
    Type: Grant
    Filed: October 21, 2019
    Date of Patent: October 15, 2024
    Assignee: MITSUBISHI GAS CHEMICAL COMPANY, INC.
    Inventors: Syunsuke Hirano, Yoshihiro Kato, Takaaki Ogashiwa
  • Patent number: 12115760
    Abstract: Provided is a resin laminate having: a polyester layer containing a polyester resin (A); and a mixed resin layer containing a polyamide resin (B) and a polyester resin (C). The polyamide resin (B) includes a constituent unit derived from a diamine and a constituent unit derived from a dicarboxylic acid, with 70 mol % or greater of the constituent derived from a diamine being a constituent unit derived from xylylenediamine, and 70 mol % or greater of the constituent unit derived from a dicarboxylic acid being a constituent unit derived from an ?,?-linear aliphatic dicarboxylic acid having from 4 to 20 carbons. Further, a radical concentration in the mixed resin layer is 1×10?12 mol/g or greater. Also provided are a multilayered film and a multilayered container formed from the resin laminate.
    Type: Grant
    Filed: August 6, 2020
    Date of Patent: October 15, 2024
    Assignee: Mitsubishi Gas Chemical Company, Inc.
    Inventors: Jin Nakamura, Takanori Miyabe, Takafumi Oda
  • Publication number: 20240327608
    Abstract: A polyacetal resin composition includes: 100 parts by weight of a polyacetal resin (A), 0.2 to 10.0 parts by weight of a fatty acid metal salt (B), and 0.2 to 10.0 parts by weight of a fatty acid ester compound (C), wherein the fatty acid metal salt (B) is fatty acid zinc, fatty acid magnesium, or a combination thereof, and the fatty acid ester compound (C) is a compound having 3 or more ester bonds in a single molecule thereof.
    Type: Application
    Filed: June 29, 2022
    Publication date: October 3, 2024
    Applicant: MITSUBISHI GAS CHEMICAL COMPANY, INC.
    Inventors: Kiyonori MICHIBA, Daisuke SUNAGA
  • Patent number: 12103848
    Abstract: A method for producing a sulfide solid electrolyte includes: forming an Li—P—S homogeneous solution prepared by mixing Li2S and P2S5 with each other in an organic solvent so that the Li2S/P2S5 molar ratio is from 0.7 to 1.5; forming an Li—Si—S homogeneous solution, which contains prepared containing at least elemental lithium (Li), elemental silicon (Si) and elemental sulfur (S) in an organic solvent; mixing a homogeneous mixed solution prepared by mixing the Li—P—S homogeneous solution and the Li—Si—S homogeneous solution with each other; forming a slurry prepared by mixing the homogeneous mixed solution and Li2S with each other; drying a precursor obtained by removing the organic solvent from the slurry; and a heating a sulfide solid electrolyte obtained by heating the precursor at 200-700° C.
    Type: Grant
    Filed: February 25, 2020
    Date of Patent: October 1, 2024
    Assignee: MITSUBISHI GAS CHEMICAL COMPANY, INC.
    Inventor: Tomohiro Ito
  • Publication number: 20240317989
    Abstract: An epoxy resin curing agent includes: a component (a1), which is a polyether polyamine; a component (a2), which is an aliphatic polyamine having an alicyclic structure; and a component (a3), which is an aliphatic polyamine having an aromatic ring. Also provided are: an epoxy resin composition and a cured product thereof; a fiber-reinforced composite material comprising the cured product of the epoxy resin composition and a reinforcing fiber; and a wind power generation blade.
    Type: Application
    Filed: May 31, 2022
    Publication date: September 26, 2024
    Applicant: MITSUBISHI GAS CHEMICAL COMPANY, INC.
    Inventors: Keisuke TOMAKI, Kousuke IKEUCHI, Kazuki KOUNO
  • Publication number: 20240309127
    Abstract: An object of the present invention is to provide a resin composition and a resin sheet which have excellent photocurability for an active energy ray including an i-line with a wavelength of 365 nm in an exposure step, and can confer excellent alkaline developability in a development step, in the fabrication of a multilayer printed wiring board; and a high density printed wiring board and semiconductor device having a highly detailed resist pattern using the same. The resin composition of the present invention contains: a maleimide compound (A) containing a constituent unit represented by the following formula (1), and maleimide groups at both ends of the molecular chain; and a photo initiator (B) having an absorbance of 2.
    Type: Application
    Filed: June 14, 2022
    Publication date: September 19, 2024
    Applicant: MITSUBISHI GAS CHEMICAL COMPANY, INC.
    Inventors: Shunsuke KATAGIRI, Yune KUMAZAWA, Takuya SUZUKI
  • Patent number: 12091542
    Abstract: A resin composition contains a maleimide compound (A), a cyanate ester compound (B), a polyphenylene ether compound (C) with a number average molecular weight of not lower than 1000 and not higher than 7000 and represented by Formula (1), and a block copolymer (D) having a styrene backbone. In Formula (1), X represents an aryl group; —(Y—O)n2- represents a polyphenylene ether moiety; R1, R2, and R3 each independently represent a hydrogen atom, an alkyl group, an alkenyl group, or an alkynyl group; n2 represents an integer of from 1 to 100; n1 represents an integer of from 1 to 6; and n3 represents an integer of from 1 to 4.
    Type: Grant
    Filed: May 31, 2019
    Date of Patent: September 17, 2024
    Assignee: MITSUBISHI GAS CHEMICAL COMPANY, INC.
    Inventors: Saori Honda, Katsuya Yamamoto, Kazuyuki Higashita, Yoshitaka Ueno
  • Patent number: 12091498
    Abstract: Provided is an optical resin composition for lenses that contains a resin having a structural unit represented by formula (1), and a binaphthalene compound and/or a binaphthalene compound oligomer having a structural unit represented by formula (2). A, p, K1, K2, Z, and q in formula (1) are as described in the present specification. R1-R10, a, and b in formula (2) are as described in the present specification.
    Type: Grant
    Filed: December 23, 2019
    Date of Patent: September 17, 2024
    Assignee: MITSUBISHI GAS CHEMICAL COMPANY, INC.
    Inventors: Mitsutake Suematsu, Atsushi Motegi, Kentaro Ishihara, Katsushi Nishimori, Shinya Ikeda, Noriyuki Kato, Mitsuteru Kondo, Kensuke Oshima, Masahiro Kanda, Shoko Suzuki, Tatsunobu Ogata
  • Publication number: 20240301156
    Abstract: A foamable resin composition for molding a polyhydroxyurethane resin foam, including: the foamable resin composition including a foamable curing agent (A) including a reaction product (a2) of an amine compound (a1), and carbon dioxide and a cyclic carbonate compound (B) having 2 or more cyclic carbonate groups; a polyhydroxyurethane resin foam obtained by foam molding the foamable resin composition; a method for producing a polyhydroxyurethane resin foam including a step of foam molding the foamable resin composition; and a foamable curing agent for molding a polyhydroxyurethane resin foam, including a reaction product (a2) of an amine compound (a1) and carbon dioxide.
    Type: Application
    Filed: August 2, 2022
    Publication date: September 12, 2024
    Applicant: MITSUBISHI GAS CHEMICAL COMPANY, INC.
    Inventors: Yuki KAWASHIMA, Kazuki KOUNO
  • Patent number: 12076810
    Abstract: A manufacturing method of a multilayer syringe barrel is provided and includes: a finish cutting a remaining gate of a nozzle portion of a multilayer syringe barrel that is injection-molded from a nozzle tip, with a cutting blade of an ultrasonic cutting apparatus including a mechanism for suppressing abnormal vibration; and irradiating a laser beam to a corner portion of the nozzle portion, the corner portion being formed during the finish cutting.
    Type: Grant
    Filed: August 14, 2019
    Date of Patent: September 3, 2024
    Assignee: MITSUBISHI GAS CHEMICAL COMPANY, INC.
    Inventors: Shun Ogawa, Shota Arakawa
  • Publication number: 20240287385
    Abstract: Provided is an etching composition for a semiconductor substrate for a memory element capable of providing a semiconductor substrate for a memory element having improved performance. The etching composition for a semiconductor substrate for a memory element comprises: (A) an oxidizing agent; (B) a fluorine compound; and (C) a metal tungsten corrosion inhibitor, wherein (C) the metal tungsten corrosion inhibitor contains at least one selected from the group consisting of an ammonium salt represented by formula (1) and a heteroaryl salt having a C14-C30 alkyl group.
    Type: Application
    Filed: June 29, 2022
    Publication date: August 29, 2024
    Applicant: MITSUBISHI GAS CHEMICAL COMPANY, INC.
    Inventors: Toshiyuki OIE, Tomoyuki ADANIYA, Chih-Liang YANG, Po-Hung WANG
  • Publication number: 20240287219
    Abstract: An object of the present invention is to provide a resin composition which has excellent photocurability for various active energy rays, in particular, an active energy ray including an h-line at a wavelength of 405 nm, without inhibiting photocuring reaction in an exposure step, and can confer excellent alkaline developability in a development step, when used in the fabrication of a multilayer printed wiring board; and a resin sheet, a multilayer printed wiring board, and a semiconductor device.
    Type: Application
    Filed: June 14, 2022
    Publication date: August 29, 2024
    Applicant: MITSUBISHI GAS CHEMICAL COMPANY, INC.
    Inventors: Yune KUMAZAWA, Takuya SUZUKI, Shunsuke KATAGIRI
  • Publication number: 20240287347
    Abstract: An object of the present invention is to provide a resin composition which does not inhibit photocuring reaction in an exposure step, and can confer excellent alkaline developability in a development step, when used in the fabrication of a multilayer printed wiring board; and a resin sheet, a multilayer printed wiring board, and a semiconductor device. The resin composition of the present invention contains: a compound (A) represented by the following formula (1); and a compound (B) containing one or more carboxy groups, other than the compound (A) represented by the following formula (1): wherein each R1 independently represents a group represented by the following formula (2) or a hydrogen atom; and each R2 independently represents a hydrogen atom, or a linear or branched alkyl group having 1 to 6 carbon atoms, provided that at least one R1 is a group represented by the following formula (2): wherein -* represents a bonding hand.
    Type: Application
    Filed: June 14, 2022
    Publication date: August 29, 2024
    Applicant: MITSUBISHI GAS CHEMICAL COMPANY, INC.
    Inventors: Yune KUMAZAWA, Shunsuke KATAGIRI, Takuya SUZUKI
  • Publication number: 20240287250
    Abstract: According to the present invention, there can be provided a thermoplastic resin comprising a constituent unit (A) derived from a monomer represented by the following general formula (1): wherein R1 to R12, Rk, and Rp each independently represent a hydrogen atom, a fluorine atom, a chlorine atom, a bromine atom, an iodine atom, a cycloalkyl group containing 5 to 20 carbon atoms, a cycloalkoxyl group containing 5 to 20 carbon atoms, an aryl group containing 6 to 20 carbon atoms, a linear or branched alkyl group containing 1 to 10 carbon atoms, an alkenyl group containing 2 to 10 carbon atoms, an alkoxy group containing 1 to 10 carbon atoms, a heteroaryl group containing 6 to 20 carbon atoms, which comprises one or more heterocyclic atoms selected from O, N and S, or an aralkyl group containing 7 to 20 carbon atoms, and X and Y represent a single bond or an alkylene group containing 1 to 5 carbon atoms, i and ii each independently represent an integer of 0 to 4, and K1 and K2 each independently represent —
    Type: Application
    Filed: June 15, 2022
    Publication date: August 29, 2024
    Applicant: MITSUBISHI GAS CHEMICAL COMPANY, INC.
    Inventors: Noriyuki KATO, Katsushi NISHIMORI, Shinya IKEDA, Atsushi MOTEGI, Kentaro ISHIHARA, Shoko MURATA SUZUKI, Tatsunobu OGATA