Patents Assigned to DIC Corporation
  • Publication number: 20240199837
    Abstract: A method for separating a colored resin composition is provided, which can easily separate a colored resin composition into a color pigment and a resin and can implement energy-saving and efficient material recycling. In the method for separating a colored resin composition, a resin is dissolved from a colored resin composition containing a condensed polycyclic organic pigment and/or carbon black into a liquefied solvent containing one or two or more of liquid dimethyl ether, liquid propane, and liquid butane, and the condensed polycyclic organic pigment and/or carbon black and the resin are separated.
    Type: Application
    Filed: April 21, 2022
    Publication date: June 20, 2024
    Applicant: DIC Corporation
    Inventor: Kengo Yasui
  • Publication number: 20240198634
    Abstract: Provided is a method for manufacturing an electromagnetic wave-shielding member that is a laminated body having a plating layer formed on a surface of a polyarylene sulfide (PAS) molded product. Provided are an electromagnetic wave-shielding member and a method for manufacturing the electromagnetic wave-shielding member including a step of roughening a surface of a molded product obtained by molding a PAS resin composition by a chemical etching treatment, and a step of subjecting the roughened surface of the molded product to a plating treatment, wherein the laminated body has a plating layer on at least two surfaces that are paired, and the PAS resin composition is obtained by mixing a PAS resin (A), a thermoplastic resin (B) other than the polyarylene sulfide resin selected from the group consisting of a thermoplastic elastomer (b1) and a hydrolyzable thermoplastic resin (b2), a carbonate (C), and a polyolefin wax (D).
    Type: Application
    Filed: March 3, 2022
    Publication date: June 20, 2024
    Applicant: DIC Corporation
    Inventors: Takamichi Aoki, Tomomichi Kanda
  • Publication number: 20240199785
    Abstract: The present invention provides a curable resin composition for stereolithography, which contains a urethane resin (A) having a (meth)acryloyl group and a photopolymerization initiator. The content of (meth)acryloyl group in the urethane resin (A) is 0.8 mmol/g or more and 2.2 mmol/g or less. The curable resin composition for stereolithography has low viscosity and can form a cured product excellent elastic modulus and impact resistance because of high impact strength and little change with time.
    Type: Application
    Filed: March 10, 2022
    Publication date: June 20, 2024
    Applicant: DIC Corporation
    Inventors: Ikuma Shimizu, Yoshinobu Deguchi
  • Patent number: 12012529
    Abstract: A problem to be solved by the present invention is to provide an adhesive tape capable of maintaining excellent adhesive strength for a long time even when sweat, sebum, an alcohol, or the like adheres thereto. The present invention relates to an adhesive tape having an adhesive layer containing an acrylic adhesive, the acrylic adhesive including an acrylic copolymer, in which the acrylic copolymer contains, as constituent components, (A) 5 to 20% by mass of a carboxyl group-containing monomer, (B) 0.01 to 1% by mass of a hydroxyl group-containing monomer, and (C) one or two or more selected from the group consisting of other alkyl (meth)acrylate monomers and alicyclic monomers, in which the average number of carbon atoms of saturated hydrocarbon groups included in the monomers (C) is 4 or less.
    Type: Grant
    Filed: April 4, 2019
    Date of Patent: June 18, 2024
    Assignee: DIC CORPORATION
    Inventors: Yoshimi Furukawa, Yusuke Takahashi, Hiroyuki Nakashima, Takeshi Iwasaki, Keiji Tsunashima, Sin Sou
  • Publication number: 20240191023
    Abstract: A modified polyester resin production method, including a step of allowing a polyhydroxyalkanoic acid to react with a reactive raw material satisfying at least any one of Condition (A-1) and Condition (A-2) described below, and Condition (B) described below, in the absence of a solvent and at a reaction temperature lower than a decomposition temperature of the polyhydroxyalkanoic acid. Condition (A-1): The reactive raw material contains a diol and a dicarboxylic acid component. Condition (A-2): The reactive raw material contains a polyester resin other than the polyhydroxyalkanoic acid. Condition (B): A ratio of an aromatic monomer configuring the reactive raw material in the reactive raw material is 0% by mole or more and less than 50% by mole.
    Type: Application
    Filed: February 17, 2022
    Publication date: June 13, 2024
    Applicant: DIC Corporation
    Inventors: Yuuichi Satokawa, Shou Inagaki, Mizuki Endou, Hidetomo Kai, Akira Takano, Tomoki Dohi
  • Patent number: 12006485
    Abstract: The present invention provides a lubricating oil additive, including: a molybdenum compound (A) represented by the following general formula (1); and a sulfur-based composition (B) containing a sulfur-based compound (b-1) represented by the following general formula (2) and at least one kind of sulfur-based compound (b-2) represented by the following general formula (3) or (4), and a lubricating oil composition containing the additive. In the formula (1), R1 to R4 each represent alkyl groups having 6 to 18 carbon atoms, the groups being identical to or different from each other, and X1 to X4 each independently represent an oxygen atom or a sulfur atom. In the formula (2), R5 and R6 each represent alkyl groups having 3 to 24 carbon atoms, the groups being identical to or different from each other, and “a” and “b” each represent a number from 1 to 5.
    Type: Grant
    Filed: July 14, 2020
    Date of Patent: June 11, 2024
    Assignees: ADEKA CORPORATION, DIC CORPORATION
    Inventors: Shinji Iino, Eiji Katsuno, Taro Sumi, Hironobu Matsueda, Hiroshi Sakata
  • Patent number: 11999112
    Abstract: Provided are a composite structure that is formed by joining a metal member and a molded article of a polyarylene sulfide resin composition and is more excellent in terms of joint strength and heat cycle resistance and a producing method therefor. More specifically, provided are a composite structure formed by joining a surface-roughened metal member and a PPS member, in which a number average value of developed area ratios (Sdr) of an interface measured at five random points on a surface of the surface-roughened metal member using a confocal microscope based on ISO 25178 is 5 [%] or more, and a melt viscosity of a PPS resin is 15 to 500 [Pa·s], and a producing method therefor.
    Type: Grant
    Filed: April 4, 2019
    Date of Patent: June 4, 2024
    Assignee: DIC Corporation
    Inventors: Kenji Nakamura, Kenta Hiwatashi, Hideaki Kikuchi
  • Patent number: 11999892
    Abstract: A compound that helps achieve a high voltage holding ratio (VHR) of a liquid crystal composition, a liquid crystal composition that contains this compound, and a liquid crystal display element made with this liquid crystal composition. More specifically, a compound represented by general formula (Y), which has polymerizable groups and polar group(s). A liquid crystal composition containing one or two or more compounds represented by general formula (Y), each of which has polymerizable groups and polar group(s). A liquid crystal display element made with a liquid crystal composition that contains one or two or more compounds represented by general formula (Y), each of which has polymerizable groups and polar group(s).
    Type: Grant
    Filed: December 10, 2020
    Date of Patent: June 4, 2024
    Assignee: DIC Corporation
    Inventors: Yuichi Inoue, Daiki Noro, Yutaka Kadomoto, Hirokazu Sugiyama, Noriyuki Sugiyama
  • Publication number: 20240174882
    Abstract: The present invention relates to an aqueous pigment dispersion containing a bisacetoacetarylide pigment (A), a dispersant (B), and an aqueous medium (C) and having an absorbance ratio represented by (absorbance at a wavelength of 408 nm)/(absorbance at a wavelength of 450 nm) of 1.40 or more and to an inkjet ink containing the aqueous pigment dispersion.
    Type: Application
    Filed: March 31, 2022
    Publication date: May 30, 2024
    Applicant: DIC Corporation
    Inventors: Yuuya Enomoto, Toshihiro Seki, Maiko Kitade
  • Publication number: 20240174883
    Abstract: An object of the present invention is to provide an aqueous pigment dispersion that maintains excellent storage stability and can be used to produce an inkjet ink that can form clear printed images with less color unevenness and the like and with excellent water resistance. The present invention provides an aqueous pigment dispersion containing a pigment (A), a pigment dispersing resin (B) having a structure (X) represented by general formula (I) below and an anionic group, and an aqueous medium (C). The pigment dispersing resin (B) contains 0.2 to 1.5 mmol/g of the anionic group in the total amount of the pigment dispersing resin (B).
    Type: Application
    Filed: March 24, 2022
    Publication date: May 30, 2024
    Applicant: DIC Corporation
    Inventors: Yusuke Takahashi, Ryouta Ichikawa, Minoru Shigemori, Takahiro Nio, Shoji Imamura
  • Publication number: 20240174925
    Abstract: An object of the present invention is to provide a dye compound-containing liquid crystal composition that has high solubility and high solubility retention for the dye compound and has high light resistance and a device including the composition. The use of a combination of one or two or more predetermined alkenyl compounds and a compound including a predetermined difluoro structure can provide a dye compound-containing liquid crystal composition that has high solubility and high solubility retention for the dye compound and has high light resistance, and the dye compound-containing liquid crystal composition is useful for devices, in particular, photochromic devices.
    Type: Application
    Filed: March 10, 2022
    Publication date: May 30, 2024
    Applicant: DIC Corporation
    Inventors: Yuichi INOUE, Daiki NORO, Junichi MAMIYA
  • Publication number: 20240174834
    Abstract: Provided is a particle-containing resin composition having an appropriate particle size and being capable of improving friction and wear resistance properties even under a high temperature and high load environment. The particle-containing resin composition according to the present invention includes a resin composition and molybdenum disulfide particles, in which a median diameter D50 of the molybdenum disulfide particles determined by a dynamic light scattering method is 10 nm or more and 1,000 nm or less.
    Type: Application
    Filed: March 22, 2022
    Publication date: May 30, 2024
    Applicant: DIC Corporation
    Inventors: Akihiro Koike, Yusuke Kano, Shingo Takada, Jianjun Yuan
  • Patent number: 11987036
    Abstract: A method for separating and recovering a layered film laminated and adhered with a reactive adhesive, the method including a step 1 of immersing the layered film in an alkaline solution while stirring the layered film with heating at 20° C. to 90° C. or ultrasonically vibrating the layered film and a step 2 of recovering separated single-layered films that constitute the respective layers of the layered film. The reactive adhesive is preferably a reactive adhesive containing a polyisocyanate composition and a polyol composition and more preferably a reactive adhesive containing a polyisocyanate composition, a polyol composition, and a compound having an acidic group.
    Type: Grant
    Filed: September 12, 2019
    Date of Patent: May 21, 2024
    Assignee: DIC CORPORATION
    Inventors: Shin-ichi Ohara, Yutaka Hamasuna, Hideoki Iwanami, Hideyasu Teramoto, Takashi Tamaoka, Yoshitomo Nagata, Yasuhiro Sente
  • Patent number: 11987714
    Abstract: A usual ink composition can be expected to improve ink viscosity to a certain degree, but when used for a glycol ether-based ink recently required, an increase in viscosity in preparing the ink cannot be suppressed. In addition, there is unknown a copper phthalocyanine pigment composition which can satisfy both such an improvement in ink viscosity and resolubility as printability which is important for the glycol ether-based ink. In this situation, a problem to be solved by the present invention is to provide a copper phthalocyanine pigment composition having low viscosity and excellent resolubility in a glycol ether-based ink. It was found that when a copper phthalocyanine pigment is combined with a specified copper phthalocyanine acid derivative, a pigment composition having significantly low viscosity when formed into a glycol ether-based ink, and good familiarity with the ink can be produced, leading to the achievement of the present invention.
    Type: Grant
    Filed: June 13, 2019
    Date of Patent: May 21, 2024
    Assignee: DIC CORPORATION
    Inventors: Shingo Saitou, Taichi Hashiguchi
  • Publication number: 20240158714
    Abstract: Molybdenum disulfide particles include a 2H crystal structure and a 3R crystal structure of molybdenum disulfide, in which a presence ratio of the 3R crystal structure in a crystal phase of molybdenum disulfide is 10% or more, and a crystallite size of the 3R crystal structure calculated by extended-type Rietveld analysis based on an analysis formula L=K?/(? cos ?) using a profile obtained from powder X-ray diffraction (XRD) using Cu-K? rays as an X-ray source is 1 nm or more and 150 nm or less (in the above formula, K is an instrumental constant that depends on an XRD optical system (an incident side and a detector side) and settings, L is a crystallite size [m], ? is a measured X-ray wavelength [m], ? is a half width [rad], and ? is a Bragg angle of a diffraction line [rad]).
    Type: Application
    Filed: October 21, 2021
    Publication date: May 16, 2024
    Applicant: DIC Corporation
    Inventors: Akihiro Koike, Yusuke Kano
  • Publication number: 20240157656
    Abstract: A sticky tape that can be heated and separated in a short time, can prevent thermal damage to an adherend, and can be easily heated and separated is provided. The sticky tape has an adhesive agent layer A containing a heating element and an adhesive agent. The heating element has a volume resistivity of 30 ??·cm or more, and the adhesive agent layer A can be melted or softened by resistance heating to be separable. The adhesive agent is at least one of a pressure-sensitive adhesive agent and a hot-melt adhesive agent. The heating element is selected from nichrome, stainless steel, titanium, nickel silver, and carbon.
    Type: Application
    Filed: January 9, 2024
    Publication date: May 16, 2024
    Applicant: DIC Corporation
    Inventors: Hiromasa Kikuchi, Hideaki Takei, Yusuke Takahashi
  • Publication number: 20240158671
    Abstract: A sticky tape that can be heated and separated in a short time and can effectively prevent thermal damage to an adherend is provided. The sticky tape separable by heating, includes: an intermediate layer A containing a heating element and an adhesive agent; an adhesive agent layer B1 disposed on one surface side of the intermediate layer A and containing an adhesive agent; and an adhesive agent layer B2 disposed on the other surface side of the intermediate layer A and containing an adhesive agent. At least one of the adhesive agent layer B1 and the adhesive agent layer B2 is a heat-insulating layer C further having heat-insulating properties, or a heat-insulating layer C with heat-insulating properties is further provided at least one of between the intermediate layer A and the adhesive agent layer B1 and between the intermediate layer A and the adhesive agent layer B2.
    Type: Application
    Filed: January 9, 2024
    Publication date: May 16, 2024
    Applicant: DIC Corporation
    Inventors: Hiromasa Kikuchi, Hideaki Takei, Yusuke Takahashi
  • Publication number: 20240158715
    Abstract: Provided is a particle-containing grease composition that can efficiently improve friction and wear resistance properties with a small added amount and exhibits excellent friction and wear resistance properties even when a clearance and the surface roughness of the friction surface in sliding parts are extremely small. The particle-containing grease composition includes base oil, a thickener, and molybdenum disulfide particles, in which a median diameter D50 of the molybdenum disulfide particles determined by a dynamic light scattering method is 10 nm or more and less than 450 nm.
    Type: Application
    Filed: March 22, 2022
    Publication date: May 16, 2024
    Applicant: DIC Corporation
    Inventors: Hironobu Matsueda, Yusuke Kano, Akihiro Koike, Jianjun Yuan
  • Publication number: 20240158656
    Abstract: The present invention relates to a pigment dispersion for inkjet containing a dispersant (A), a pigment (B), and water (C), the dispersant (A) containing a non-cross-linked resin (A1) at least having a structural unit (a1) derived from an acid group-containing monomer, in the resin (A1), the acid groups in the structural unit (a1) being neutralized using a tertiary alkanolamine with a neutralization rate of greater than 100% and 200% or less with a neutralization rate when the acid groups are neutralized with a theoretical equivalent as 100%, and the tertiary alkanolamine having two to three hydroxy groups in a structure and having a boiling point of 150 to 330° C., and also relates to an inkjet ink containing the pigment dispersion for inkjet and a printed product printed with the inkjet ink.
    Type: Application
    Filed: March 31, 2022
    Publication date: May 16, 2024
    Applicant: DIC Corporation
    Inventors: Takashi Nishijima, Iwao Hattori, Minoru Shigemori, Naruhito Suzuki
  • Publication number: 20240150866
    Abstract: Provided are a noble metal adsorbent, a method for recovering a noble metal, and a method for regenerating a noble metal adsorbent that can easily recover noble metal while high adsorption performance for noble metals is achieved. The noble metal adsorbent according to the present invention includes a metal sulfide. The metal sulfide is constituted of, for example, molybdenum disulfide particles. The method for recovering a noble metal according to the present invention includes adsorbing a noble metal onto the noble metal adsorbent, and thereafter heating and volatilizing the noble metal adsorbent in the presence of oxygen to recover the noble metal.
    Type: Application
    Filed: March 22, 2022
    Publication date: May 9, 2024
    Applicant: DIC Corporation
    Inventors: Seiji Mizuta, Jianjun Yuan