Patents Assigned to DAICEL CORPORATION
  • Publication number: 20200339908
    Abstract: The present invention provides an initial running-in agent composition suitable for forming a low-friction surface (running-in surface) on a sliding member, such as a hard carbon film, in a system in which water is used as a lubricant. The initial running-in agent composition (10) according to an embodiment of the present invention contains water 11 as a lubricant base and nanodiamond particles (12). In the initial running-in agent composition (10), a content of the water (11) is preferably 99 mass % or greater, and a content of the nanodiamond particles (12) is preferably 1.0 mass % or less.
    Type: Application
    Filed: October 25, 2018
    Publication date: October 29, 2020
    Applicants: DAICEL CORPORATION, TOHOKU UNIVERSITY
    Inventors: Norihiro KIMOTO, Tomohiro GOTO, Koshi ADACHI, Tsubasa TAKAHASHI
  • Patent number: 10815181
    Abstract: Provided is a method for industrially efficiently producing acetic acid yielding a good potassium permanganate test result, without costing much. The acetic acid production method according to the present invention includes a carbonylation step, a separation step, a recycling step, a liquid-liquid separation step, and an acetaldehyde-removing step of treating an object, where the object is selected from at least a part of at least one of the aqueous phase and the organic phase on the basis of a factor(s) selected from a liquid temperature in the liquid-liquid separation in the liquid-liquid separation step, an acetaldehyde concentration in at least one of the aqueous phase and the organic phase, an acetaldehyde partition coefficient, a methyl acetate concentration in at least one of the aqueous phase and the organic phase, and a methyl acetate partition coefficient. In the first acetic acid stream in the separation step, a crotonaldehyde concentration is controlled to 2.
    Type: Grant
    Filed: May 29, 2018
    Date of Patent: October 27, 2020
    Assignee: DAICEL CORPORATION
    Inventor: Masahiko Shimizu
  • Patent number: 10814827
    Abstract: A gas generator includes, a housing having a top plate, a bottom plate, and a circumferential wall having a gas discharge port. In the housing, a cylindrical member having a first communication hole in a circumferential wall is disposed along an axis of the housing. In the cylindrical member, an igniter attached to the bottom plate and a transfer charge charged in a space accommodating the igniter are provided. A cup-shaped member including a bottom surface, a circumferential wall, and an opening is disposed such that the circumferential wall is abutted against an inner wall surface of the cylindrical member. The opening is located opposing the top plate and the bottom surface has a second communication hole facing the transfer charge. A gas generating agent is charged in a space outside and inside the cylindrical member, and an annular sealing member abuts against the bottom surface and the inner wall.
    Type: Grant
    Filed: March 29, 2017
    Date of Patent: October 27, 2020
    Assignee: DAICEL CORPORATION
    Inventor: Toshihiro Izuma
  • Patent number: 10814828
    Abstract: Provided is a gas generator including in a housing having a top plate, a bottom plate and a circumferential wall provided with a gas discharge port; a first combustion chamber arranged on the side of the top plate; a second combustion chamber arranged on the side of the bottom plate; a plenum chamber facing the gas discharge port and arranged between the first combustion chamber and the second combustion chamber; a first igniter for igniting and burning a first gas generating agent in the first combustion chamber; and a second igniter for igniting and burning a second gas generating agent in the second combustion chamber.
    Type: Grant
    Filed: August 14, 2017
    Date of Patent: October 27, 2020
    Assignee: DAICEL CORPORATION
    Inventors: Yuki Fukui, Tomoharu Kobayashi
  • Patent number: 10806863
    Abstract: A needleless syringe comprises a main syringe body which is a main body thereof and which has, in the main body, a sliding movement passage connected to an opening provided on a front end surface of the main body; a holding unit which has an accommodating unit for accommodating an injection objective substance so that the injection objective substance is releasable; and a driver that is configured to apply energy to the holding unit in order to allow the holding unit to slide toward the opening. When the energy is applied by the driver to the holding unit disposed at the initial position, the holding unit slides in the sliding movement passage to abut against the opening at the abutment position, and thus the injection objective substance accommodated in the accommodating unit is discharged via the opening. Accordingly, the high injection performance of the needleless syringe is appropriately exhibited.
    Type: Grant
    Filed: August 18, 2015
    Date of Patent: October 20, 2020
    Assignee: Daicel Corporation
    Inventors: Ryohei Yamada, Tomohide Fujiwara, Yuzo Yamamoto
  • Patent number: 10800998
    Abstract: Problem to be Solved To provide a composition that can efficiently remove a photoresist adhering to an edge portion and a back surface of a substrate, in a process of producing a mask which is used when the substrate is subjected to etching treatment to have an element, a circuit etc., formed thereon using the photoresist. Solution The composition for removing a resist of the present invention is a composition comprising a surfactant and a solvent, wherein the composition contains, as the surfactant, at least the following component (A). Component (A): a polyglycerol derivative represented by the following formula (a): RaO—(C3H5O2Ra)n—Ra??(a) wherein n represents the number of the repeating units, and is an integer of 2 to 60; and Ra identically or differently represents a hydrogen atom, a C1-18 hydrocarbon group or a C2-24 acyl group, provided that at least two of the (n+2) number of Ra are C1-18 hydrocarbon groups and/or C2-24 acyl groups.
    Type: Grant
    Filed: January 10, 2018
    Date of Patent: October 13, 2020
    Assignee: DAICEL CORPORATION
    Inventor: Yuichi Sakanishi
  • Publication number: 20200306414
    Abstract: Provided is a bone fixation material that does not deteriorate in properties even by an electron beam sterilization treatment performed before or during use as a bone fixation material, has fatigue resistance, wear resistance, and dimensional stability at excellent levels, also has biocompatibility, and offers excellent osteoconnectivity. The bone fixation material according to the present invention includes a nonwoven fabric made of PEEK fibers. The bone fixation material according to the present invention preferably has an average pore size of 3 to 280 ?m and preferably has a porosity of 15% to 70%. The PEEK fibers preferably have an average fiber diameter of 10 ?m or less.
    Type: Application
    Filed: December 22, 2017
    Publication date: October 1, 2020
    Applicant: DAICEL CORPORATION
    Inventors: Takashi ARAI, Yo YAMATO, Koji NAKANE, Naoki SHIMADA, Hanako ASAI
  • Publication number: 20200299488
    Abstract: Cellulose derivative particles including an alkoxy group having 2 or more carbons or an acyl group having 3 or more carbons, wherein the cellulose derivative particles have an average particle size of 80 nm or greater and 100 ?m or less, a sphericity of 70% or greater and 100% or less, and a surface smoothness of 80% or greater and 100% or less; and a total substitution degree of the cellulose derivative is 0.7 or greater and 3 or less.
    Type: Application
    Filed: March 13, 2020
    Publication date: September 24, 2020
    Applicant: DAICEL CORPORATION
    Inventors: Keiko KOBAYASHI, Masaya OMURA
  • Patent number: 10781155
    Abstract: Provided are a method and an acetic acid production method, each of which can effectively restrain or prevent local corrosion of an inner wall of a process unit and/or line and can lower a formic acid concentration in an acetic acid product. The method produces acetic acid by a process including (1) a reaction step and (A) a separation step. In the reaction step (1), methanol is carbonylated with carbon monoxide in the presence of a catalytic system, acetic acid, methyl acetate, and water, where the catalytic system includes a metal catalyst and methyl iodide. In the separation step (A), the reaction mixture resulting from the reaction step is separated, using at least one selected from evaporators and distillation columns, into a stream containing the catalyst, an acetic acid stream rich in acetic acid, and a stream rich in lower-boiling components as compared with the acetic acid stream.
    Type: Grant
    Filed: March 27, 2018
    Date of Patent: September 22, 2020
    Assignee: DAICEL CORPORATION
    Inventor: Masahiko Shimizu
  • Publication number: 20200294726
    Abstract: Provided is an electrolyte composition containing iodine (A), a sulfur compound (B) excluding organic salts, and a basic nitrogen compound (C). This electrolyte composition may have a light transmittance at a wavelength of 400 nm in an optical path length of 1 cm of 30% or higher. The sulfur compound (B) may be at least one selected from the group consisting of a thiol, a sulfide, and a disulfide (particularly a thiol having a chain or cyclic alkane backbone, such as a linear or branched C4-18 alkanethiol). The basic nitrogen compound (C) may be an amine (particularly a pyridine). A proportion of the sulfur compound (B) may be approximately from 0.1 to 2 times the molar amount of the basic nitrogen compound (C). The electrolyte composition may further contain an iodide salt. The electrolyte composition may be an electrolyte solution for dye-sensitized solar cells.
    Type: Application
    Filed: November 26, 2018
    Publication date: September 17, 2020
    Applicant: DAICEL CORPORATION
    Inventor: Kazuhisa FUKUI
  • Publication number: 20200288762
    Abstract: Object of the present invention is to provide an intestinal immune-enhancing agent that can sufficiently increase IgA in the intestinal tract with a low dose while maintaining an increased amount of IgA for an extended period of time. Provided is an intestinal immune-enhancing agent containing a cellulose acetate that has a total degree of acetyl substitution from 0.4 to 1.1.
    Type: Application
    Filed: October 23, 2018
    Publication date: September 17, 2020
    Applicant: DAICEL CORPORATION
    Inventors: Tadashi TAKEUCHI, Eiji MIYAUCHI, Shu SHIMAMOTO, Akinobu MATSUYAMA, Hiroshi OHNO
  • Publication number: 20200290554
    Abstract: The present invention relates to a gas generator including a cylindrical filter in a housing including a gas discharge port, the housing including a plurality of independent protrusions or an annular protrusion protruding inwardly from an inner wall surface of the housing, the independent protrusions including an annular protruding wall surface, the annular protrusion including an annular tip surface, the cylindrical filter including a first annular end surface and a second annular end surface, a support member which includes an annular surface portion for supporting the cylindrical filter being arranged, the annular surface portion being an annular planar portion, or including an annular planar portion and a deformed portion for which all or a part of at least one of the inner peripheral portion and the outer peripheral portion of the annular planar portion is deformed, the support member being configured such that a part of the support member including an outer peripheral portion of the annular planar porti
    Type: Application
    Filed: September 3, 2018
    Publication date: September 17, 2020
    Applicant: DAICEL CORPORATION
    Inventor: Toshihiro IZUMA
  • Patent number: 10773682
    Abstract: An ignition device includes an igniter fixed to an igniter collar, a first cup member filled with a gas generating component therein, and a second cup member. The first cup member covers the igniter collar to enclose a portion including an ignition portion of the igniter. The second cup member covers the igniter collar to enclose the first cup member. A gap is formed between an outer surface of the first cup member and an inner surface of the second cup member to function as a heat insulating layer. The first cup member has a first opening, and the second cup member has a second opening. At least one of the first opening and the second opening is closed before actuation and is opened only when gas is generated from the gas generating component.
    Type: Grant
    Filed: February 4, 2019
    Date of Patent: September 15, 2020
    Assignee: DAICEL CORPORATION
    Inventor: Toshihiro Izuma
  • Publication number: 20200282712
    Abstract: An anti-reflection film (X) of the present invention includes a laminated structure including a substrate (11), a hard coat layer (12), and an anti-reflection layer (13). The anti-reflection layer (13) contains a curable resin, low-refractive-index particles, and nanodiamond particles. The anti-reflection layer (13) may further contain a fluorine-containing curable compound. Such an anti-reflection film is suitable for achieving high scratch resistance together with high anti-reflective properties.
    Type: Application
    Filed: August 6, 2018
    Publication date: September 10, 2020
    Applicant: DAICEL CORPORATION
    Inventors: Takahiro SAKAKIBARA, Kouichi UMEMOTO, Ryouta KOJIMA, Hiroki KAGEYAMA
  • Publication number: 20200284950
    Abstract: The present invention aims at providing a plastic lens having excellent heat resistance and durability in which generation of cracks is suppressed even in high-temperature environments or when a mechanical stress being applied, and has excellent surface hardness and scratch resistance.
    Type: Application
    Filed: September 6, 2018
    Publication date: September 10, 2020
    Applicant: DAICEL CORPORATION
    Inventors: Akihiro SHIBAMOTO, Takashi YOSHIMURA
  • Patent number: 10766776
    Abstract: There are provided a surface-modified nanodiamond exhibiting easy dispersibility in an organic solvent, an organic solvent dispersion thereof, and a method for producing the surface-modified nanodiamond. The surface-modified nanodiamond according to the present invention includes a nanodiamond, and a group bound to a particulate surface of the nanodiamond and represented by formula (1): —NHCOR ??(1) R is an organic group having a carbon atom at a binding site with a neighboring carbonyl carbon atom indicated in the formula; and the left end, in the formula, of the group serves to form bonding to the nanodiamond. The nanodiamond is preferably a detonation nanodiamond or a high-temperature high-pressure nanodiamond.
    Type: Grant
    Filed: March 24, 2017
    Date of Patent: September 8, 2020
    Assignee: DAICEL CORPORATION
    Inventors: Yuto Makino, Yoshiyuki Murai
  • Patent number: 10759730
    Abstract: Provided is an acetic acid production method that enables, in a scrubbing system, efficient separation and obtaining of methyl iodide and an absorbing solvent; restrainment of corrosion of the interior of a distillation column; efficient separation between and recovery of hydrogen iodide and methyl iodide; or sufficient recovery of hydrogen iodide. The acetic acid production method according to the present invention includes a first absorption step and a second absorption step. In the first absorption step, an offgas is brought into contact with a first absorbent to allow the first absorbent to absorb an iodine compound from the offgas, to give a first gas, where the first absorbent includes at least one of C2 or higher alcohols, esters of C3 or higher carboxylic acids, esters between carboxylic acids and C2 or higher alcohols, ethers, ketones, water, and basic aqueous solutions.
    Type: Grant
    Filed: July 2, 2018
    Date of Patent: September 1, 2020
    Assignee: DAICEL CORPORATION
    Inventor: Masahiko Shimizu
  • Publication number: 20200270368
    Abstract: Provided is a semipermeable membrane with high chlorine resistance and high alkali resistance. A cellulose mixed ester represented by a structural formula of General Formula (I), wherein when X is an aromatic acyl group, a degree of substitution is from 2.91 to 3.0; the aromatic acyl group includes a benzoyl group (A) that may include a substituent, and an aromatic acyl group (B) containing a carboxyl group or a salt of a carboxyl group; when the degree of substitution is 3.0, a degree of substitution of the benzoyl group (A) that may include a substituent is from 2.4 to 2.95, and a degree of substitution of the aromatic acyl group (B) containing a carboxyl group or a salt of a carboxyl group is from 0.05 to 0.6; and in General Formula (I), all or part of Xs are aromatic acyl groups; when part of Xs are aromatic acyl groups, the remainder represents a hydrogen atom or an alkyl group; and n represents an integer from 20 to 20000.
    Type: Application
    Filed: August 22, 2018
    Publication date: August 27, 2020
    Applicant: Daicel Corporation
    Inventors: Tomohiro HASHIZUME, Hiroyuki MATSUMURA, Tohru SHIBATA, Hiroshi KOYAMA, Mitsuru OHNO
  • Publication number: 20200268041
    Abstract: The present invention provides a package of a filter tow bale made of cellulose acetate packed with a packing material in a non-hermetic state, which can be stacked in multistage and in which tows in the same bale can be uniformly maintained. The package of the filter tow bale made of cellulose acetate is packed with the packing material in the non-hermetic state, in which the filter tow bale is tightened with the packing material in the package, the filter tow bale has a cubic shape or a rectangular parallelepiped shape with 800 to 1,400 mm in length, 800 to 1,150 mm in width, and 800 to 1,100 mm in height, and a packing initial pressure between a top surface of the filter tow bale and the packing material is 6.3 kPa or less.
    Type: Application
    Filed: March 16, 2020
    Publication date: August 27, 2020
    Applicant: Daicel Corporation
    Inventors: Masataka MIIDA, Tomoharu MIYASHITA, Masaharu TAKEKAWA
  • Publication number: 20200271829
    Abstract: An object of the present invention is to provide a plastic lens that has a hard coat layer exhibiting high surface hardness and scratch resistance and that suppresses occurrence of interference fringes. The present invention provides a plastic lens containing a plastic lens substrate; and a hard coat layer formed on at least one surface of the plastic lens substrate, wherein the plastic lens substrate contains at least one resin selected from the group consisting of a polyamide-based resin, a polycarbonate-based resin, an acrylic resin, an allyl-based resin, a urethane-based resin, and a thiourethane-based resin, and the hard coat layer is a cured product of a curable composition containing a polyorganosilsesquioxane described below, a content of the polyorganosilsesquioxane being 80 wt. % or greater relative to the total solid content (100 wt.
    Type: Application
    Filed: September 6, 2018
    Publication date: August 27, 2020
    Applicant: DAICEL CORPORATION
    Inventors: Akihiro SHIBAMOTO, Takashi YOSHIMURA