公开(公告)号：US11873235B2

公开(公告)日：2024-01-16

申请号：US17253154

申请日：2019-06-18

Applicant: AD'ALL CO., LTD. ,  UNITIKA LTD. ,  OSAKA GAS CHEMICALS CO., LTD.

Inventor： Tomoyasu Nakano ,  Hirokazu Shimizu ,  Akinori Kawachi ,  Keiji Sakai

IPC: C02F1/28 ,  B01J20/20 ,  B01J20/30 ,  C01B32/33 ,  C01B32/336 ,  C02F101/36

CPC classification number: C02F1/283 ,  B01J20/20 ,  B01J20/30 ,  C01B32/336 ,  C02F2101/36 ,  C02F2303/185

Abstract: There is provided an activated carbon having a high total trihalomethane filtration capacity, even in water treatment by passing water at a high superficial velocity (SV). In the activated carbon of the present invention, a pore volume A of pores with a size of 1.0 nm or less, of pore volumes calculated by the QSDFT method, is 0.3 cc/g or more, and a pore volume B of pores with a size of 3.0 nm or more and 3.5 nm or less, of pore volumes calculated by the QSDFT method, is 0.009 cc/g or more.

公开(公告)号：US20230347297A1

公开(公告)日：2023-11-02

申请号：US18028866

申请日：2021-09-24

Applicant: UNITIKA LTD. ,  NATIONAL UNIVERSITY CORPORATION KOBE UNIVERSITY

Inventor： Ryota NAKAMURA ,  Kuniko INOUE ,  Kyohei UMAKOSHI ,  Takahiro ONO ,  Hideto MATSUYAMA

IPC: B01D69/02 ,  B01D71/56 ,  B01D69/08 ,  B01D67/00

CPC classification number: B01D69/02 ,  B01D71/56 ,  B01D69/08 ,  B01D67/0016 ,  B01D67/0027 ,  B01D2325/0231 ,  B01D2325/34

Abstract: An object of the present invention is to provide a polyamide porous membrane having improved fluid permeation performance. A polyamide porous membrane having a dense layer formed on at least one surface, wherein the polyamide porous membrane has a streak-like recessed portion extending in one direction of a surface of the dense layer, and the streak-like recessed portion has an orientation angle of 0 to 5.0° or 175.0 to 180.0° and an orientation intensity of 1.5 to 2.0 according to predetermined orientation analysis.

公开(公告)号：US11773009B2

公开(公告)日：2023-10-03

申请号：US17880202

申请日：2022-08-03

Applicant: Nippon Sheet Glass Company, Limited ,  UNITIKA LTD. ,  UNITIKA GLASS FIBER CO., LTD.

Inventor： Aya Nakamura ,  Hidetoshi Fukuchi ,  Junji Kurachi ,  Riku Sawai ,  Takaharu Miyazaki ,  Yoshito Nawa ,  Kohji Hattori

IPC: C03C13/00 ,  C03B37/02 ,  C03C4/16 ,  H05K1/03 ,  C03C3/091 ,  C08J5/24

CPC classification number: C03C13/00 ,  C03B37/02 ,  C03C3/091 ,  C03C4/16 ,  C08J5/244 ,  H05K1/0306 ,  H05K1/038 ,  C03C2204/00 ,  C03C2213/00 ,  H05K2201/029

Abstract: The present disclosure provides a novel glass composition that has a low permittivity and is suitable for mass production. A glass composition provided satisfies, in wt %, for example, 40≤SiO2≤60, 25≤B2O3≤45, 0

公开(公告)号：US11642433B2

公开(公告)日：2023-05-09

申请号：US16967167

申请日：2019-02-27

Applicant: UNITIKA LTD.

Inventor： Hironori Fujiki ,  Yoshiyuki Sometani

IPC: A61L9/16 ,  C01B32/30

CPC classification number: A61L9/16 ,  A61L2209/21 ,  A61L2209/22 ,  C01B32/30

Abstract: The present invention relates to an activated carbon sheet, and particularly relates to an activated carbon sheet for air purification comprising activated carbon, which is suitable for removing volatile organic compounds in the passenger compartment of an automobile or the like. An object of the present invention is to provide a sheet that is excellent in toluene adsorption capacity and flame retardancy. An activated carbon sheet for air purification comprising an activated carbon fiber, granular or powdered activated carbon, and a fibrillated fiber, wherein a mass (g/m2) of the activated carbon fiber is 5 g/m2 or more, a pressure loss as measured by a method set forth below is 150 Pa or less, and a burn distance as measured by the FMVSS 302 burning test is 51 mm or less: the method is conducted in accordance with JIS B 9927:1999 “Appendix (Standard) Cleanroom—Air filters—Test methods”, 3.2 “Pressure Loss Test” as follows: a piece of the activated carbon sheet cut in the form of a circle with a diameter of 110 mm is used as a measurement sample; air is sucked though the measurement sample at a linear velocity of 0.1 m/s, and a difference in static pressure between an upstream side and a downstream side of the activated carbon sheet is measured with a differential pressure gauge; and figures up to the one's place of the measured value are used as significant figures.

公开(公告)号：US20220380539A1

公开(公告)日：2022-12-01

申请号：US17771938

申请日：2020-10-06

Applicant: UNITIKA LTD.

Inventor： Tsuyoshi TOMOTOSHI ,  Shota NOGUCHI ,  Miho NAKAI ,  Hiroo KAMIKAWA

IPC: C08G69/14 ,  C08K7/02 ,  C08K3/08 ,  C08K3/34 ,  C08K9/02 ,  C08K9/08

Abstract: The present invention provides a resin composition capable of giving a molded body having a metallic color tone and excellent in surface hardness, surface glossiness, mechanical properties, and flow mark reducing property. The present invention relates to a polyamide resin composition comprising 100 parts by mass of a polyamide (A), 0.1 to 50 parts by mass of a cellulose fiber (B) having an average fiber diameter of 10 μm or less and 0.1 to 12 parts by mass of a metallic pigment (C).

公开(公告)号：US20220220256A1

公开(公告)日：2022-07-14

申请号：US17610468

申请日：2020-05-13

Applicant: UNITIKA LTD.

Inventor： Takashi Okabe ,  Masafumi Yamamoto ,  Sumito Kihara

IPC: C08G69/26 ,  C08J5/18 ,  B29C55/16 ,  B29C55/00 ,  B29C71/02

Abstract: A semi-aromatic polyamide film having a thermal shrinkage factor in the longitudinal direction of the film, SMD, of −1.0 to 1.5% and a thermal shrinkage factor in the width direction of the film, STD, of −1.0 to 1.5% as measured under the conditions of 250° C. and 5 min, a tensile breaking elongation of 70% or more in the longitudinal direction and the width direction, and a haze of 14% or less.

公开(公告)号：US11326032B2

公开(公告)日：2022-05-10

申请号：US16954321

申请日：2018-12-26

Applicant: UNITIKA LTD.

Inventor： Takayoshi Okuzu ,  Akiko Hamamoto ,  Ken Akamatsu

IPC: B32B27/34 ,  C08J5/18 ,  B32B27/08 ,  B32B27/30

Abstract: Provided is a polyamide film which is a stretched film including a polyamide resin composition containing 1 to 10% by mass of a polyester thermoplastic elastomer, wherein the polyamide film satisfies all of the following conditions (A) to (C): (A) elastic moduli in MD and TD of the film are each 1.0 to 2.3 GPa; (B) a ratio between the elastic moduli in MD and TD of the film (MD/TD) is 0.9 to 1.5; and (C) a haze of the film is 7% or less.

公开(公告)号：US20220106435A1

公开(公告)日：2022-04-07

申请号：US17426228

申请日：2020-01-21

Applicant: UNITIKA LTD.

Inventor： Ayumi YANAKA ,  Yumeto FUKUBAYASHI ,  Takatoshi MURAKAMI

IPC: C08G59/40 ,  C08G59/42 ,  C08G59/22 ,  C08G59/32 ,  C08J5/24 ,  C08J5/04 ,  C08L63/00 ,  C08G59/02

Abstract: The present invention provides an epoxy resin solution, from which an epoxy resin-cured product adequately excellent in heat-resisting properties and dielectric properties can be obtained with adequately good working properties ensured. The present invention relates to an epoxy resin solution containing at least a curing agent and an epoxy resin mixed in an organic solvent, wherein the curing agent comprises an imide group-containing curing agent having 1-4 imide groups and 2-4 glycidyl group-reactive functional groups in a molecule.

公开(公告)号：US20210261442A1

公开(公告)日：2021-08-26

申请号：US17253163

申请日：2019-06-18

Applicant: AD'ALL CO., LTD. ,  UNITIKA LTD. ,  OSAKA GAS CHEMICALS CO., LTD.

Inventor： Tomoyasu NAKANO ,  Hirokazu SHIMIZU ,  Keiji SAKAI

IPC: C02F1/28 ,  B01J20/20 ,  B01J20/30 ,  C01B32/336

Abstract: There is provided an activated carbon having a high total trihalomethane filtration capacity, even in water treatment by passing water at a high superficial velocity (SV). In the activated carbon of the present invention, a pore volume A (cc/g) of pores with a size of 1.0 nm or less, of pore volumes calculated by the QSDFT method, is 0.300 cc/g or more, and elemental vanadium and/or a vanadium compound is contained.

公开(公告)号：US20210009516A1

公开(公告)日：2021-01-14

申请号：US17037164

申请日：2020-09-29

Applicant: UNITIKA LTD.

Inventor： Yuki Yamada ,  Tatsuya Morikita ,  Yosuke Sugimoto ,  Takeshi Yoshida ,  Akira Shigeta ,  Yoshiaki Echigo

IPC: C07D207/448 ,  B01D11/04 ,  B01D9/00

Abstract: An object is to provide a method for easily producing maleimide (MI) in which trace amounts of residual acid components as impurities in a crude MI are efficiently reduced, that is, the acid value is sufficiently reduced. A method for producing purified MI, comprising reducing an acid value of crude MI by 50% or more, by adding carbodiimide (CDI) to a solution comprising the crude MI to react an acid component in the crude MI with the CDI. The method for producing purified MI, comprising adding 0.5% by mass or more and 8% by mass or less of the CDI with respect to a mass of the crude MI for reaction. The method for producing purified MI, wherein the CDI is N,N′-diisopropyl carbodiimide (DIC). The method for producing purified MI, comprising removing a urea derivative of the CDI (CDI-U) by-produced when reacting the acid component in the crude MI with the CDI.