公开(公告)号：US20220054972A1

公开(公告)日：2022-02-24

申请号：US17416807

申请日：2019-12-09

Applicant: SHOWA DENKO K.K.

Inventor： Atsushi SUZUKI ,  Kazuma MATSUI

IPC: B01D53/14 ,  B01D53/30 ,  B01D53/68

Abstract: A method for removing a halogen fluoride in a mixed gas by reacting the mixed gas containing a halogen fluoride including bromine or iodine with a removing agent, wherein the removing agent is a chloride, bromide or iodide of potassium, sodium, magnesium, calcium and barium. Also disclosed is a quantitative analysis method as well as a quantitative analyzer for a gas component contained in a hydrogen fluoride mixed gas, the method characterized by reacting a mixed gas containing a halogen fluoride and another gas component with a removing agent, thereby removing the halogen fluoride in the mixed gas, further removing produced by-products, and quantitatively analyzing a residual gas by a gas chromatograph.

公开(公告)号：US11247192B2

公开(公告)日：2022-02-15

申请号：US16327437

申请日：2017-08-10

Applicant: SHOWA DENKO K.K.

Inventor： Junya Kato ,  Hideyuki Kondo ,  Ryuji Takahashi

IPC: B01J20/26 ,  G01N30/88 ,  B01D15/38 ,  B01D15/00 ,  B01J20/28 ,  B01D15/42 ,  B01J20/281 ,  B01J20/285

Abstract: Provided is a packing material for HILIC columns for more accurately and more easily performing oligosaccharide analysis by liquid chromatography; an HILIC column which is filled with the packing material for HILIC columns; and a method for analyzing an oligosaccharide with use of this packing material for HILIC columns A packing material for HILIC columns according to the present invention is composed of particles, each of which is obtained by reacting glycidol to a hydroxyl group of a porous cross-linked polymer base material having the hydroxyl group, and which have a hydrophilicity index of 2.30 or more and a surface-pH index of from 0.95 to 1.05.

公开(公告)号：US20220023832A1

公开(公告)日：2022-01-27

申请号：US17311437

申请日：2019-11-11

Applicant: SHOWA DENKO K.K.

Inventor： Hirotsugu NAKANISHI ,  Ritsuko WAKAYAMA

IPC: B01J20/283 ,  B01J20/30 ,  G01N30/56 ,  G01N30/74

Abstract: Provided is a guard column including a filling part having a length of 2.0 cm to 3.5 cm formed of a filler, in which the filler is made of porous silica gel having a hydrophilized surface and an average particle size of 1.5 μm to 2.5 μm, and a pressure difference when an aqueous solution is fed at a linear flow rate of 2.1 cm/min is 4.0 MPa or more.

公开(公告)号：US20210380509A1

公开(公告)日：2021-12-09

申请号：US17288382

申请日：2019-10-28

Applicant: SHOWA DENKO K.K.

Inventor： Wataru OGUCHI ,  Gen INOUE ,  Toshihiro KIMURA ,  Masafumi KOYANO ,  Takuya KUZUTANI

IPC: C07C29/17 ,  B01J21/08 ,  B01J37/08 ,  B01J37/04 ,  B01J23/30 ,  B01J35/10

Abstract: A method and catalyst for producing an alcohol, which method includes supplying water and a C2-C5 olefin to a reactor and performing hydration in a gas phase using a solid acid catalyst. The solid acid catalyst is one in which a heteropolyacid or a salt thereof is supported on a silica carrier. The silica carrier is obtained by kneading a fumed silica obtained by a combustion method, a silica gel obtained by a gel method, and a colloidal silica obtained by a sol-gel method or a water glass method; molding the resulting kneaded product; and calcining the resulting molded body.

公开(公告)号：US20210363078A1

公开(公告)日：2021-11-25

申请号：US16962943

申请日：2018-12-25

Applicant: SHOWA DENKO K.K.

Inventor： Yohsuke FUKUCHI ,  Tomokazu SUGAWARA ,  Shinya OGURO ,  Hiroshi KOBAYASHI

IPC: C07C17/367

Abstract: Provided is a method for producing tetrafluoromethane, and the method is unlikely to damage a reaction apparatus and can produce tetrafluoromethane safely, inexpensively, and stably. To a raw material liquid (1) containing a reaction inducer and a fluorinated hydrocarbon represented by chemical formula CpHqClrFs (in the chemical formula, p is an integer of 3 or more and 18 or less, q is an integer of 0 or more and 3 or less, r is an integer of 0 or more and 9 or less, and s is an integer of 5 or more and 30 or less) and having no carbon-carbon unsaturated bond, fluorine gas is introduced to give tetrafluoromethane. The reaction inducer is a hydrocarbon polymer solid at normal temperature and pressure and is reacted with fluorine gas to induce a reaction of forming tetrafluoromethane from the fluorinated hydrocarbon and the fluorine gas.

公开(公告)号：US11167264B2

公开(公告)日：2021-11-09

申请号：US15556384

申请日：2016-03-03

Applicant: SHOWA DENKO K.K.

Inventor： Toru Matsui ,  Junya Kato

IPC: B01J20/26 ,  B01J20/291 ,  B01J20/285 ,  B01D15/34 ,  G01N30/74 ,  G01N30/88

Abstract: Provided is a packing material for liquid chromatography, including a gel obtained by polymerizing monomers including 40% by mass or more of a crosslinkable monomer having a (meth)acryloyloxy group.

公开(公告)号：US20210340457A1

公开(公告)日：2021-11-04

申请号：US16470713

申请日：2017-11-24

Applicant: SHOWA DENKO K.K.

Inventor： Naoya FUKUMOTO ,  Yuta YAMAGUCHI ,  Naoko ITO ,  Katsumi MUROFUSHI

IPC: C10M107/38 ,  C08G65/331 ,  G11B5/725

Abstract: A fluorine-containing ether compound represented by formula (1) shown below. R4—CH2—R3—CH2—R2—CH2—R1—CH2—R2—CH2—R3—CH2—R4  (1) (In formula (1), R1 and R3 represent different perfluoropolyether chains, R2 represents a linking group containing one or more polar groups, and R4 represents a terminal group containing two or more polar groups.)

公开(公告)号：US20210317390A1

公开(公告)日：2021-10-14

申请号：US17269692

申请日：2019-09-26

Applicant: SHOWA DENKO K.K.

Inventor： Susumu NAKAZAKI ,  Kuniaki MIYAHARA ,  Tomoyuki FUKUYO

IPC: C11D7/32 ,  C11D7/50 ,  C11D11/00

Abstract: Provided is a composition having high affinity for the surface of an adhesive, and excellent long-term storage stability. This composition comprises: a quaternary alkylammonium fluoride or a hydrate of a quaternary alkylammonium fluoride; and an aprotic solvent, wherein the aprotic solvent includes (A) an N-substituted amide compound having 4 or more carbon atoms and not containing active hydrogen on a nitrogen atom, and (B) an ether compound.

公开(公告)号：US20210310138A1

公开(公告)日：2021-10-07

申请号：US17266728

申请日：2019-07-29

Applicant: SHOWA DENKO K.K.

Inventor： Yohsuke FUKUCHI ,  Shinya OGURO ,  Hiroshi KOBAYASHI

IPC: C25B11/089 ,  C25B11/065 ,  C25B1/245 ,  C22C38/08 ,  C22C38/10

Abstract: An anode for electrolytic synthesis (3) for electrolytically synthesizing fluorine gas. The anode includes an anode substrate (31) formed of a metallic material and a carbonaceous layer (33) formed of a carbonaceous material and arranged on the surface of the anode substrate (31). The metallic material is an iron-based alloy containing iron and nickel. Also disclosed is a method for producing fluorine gas using the anode for electrolytic synthesis.

公开(公告)号：US20210276943A1

公开(公告)日：2021-09-09

申请号：US17269059

申请日：2019-08-16

Applicant: SHOWA DENKO K.K.

Inventor： Norihito NISHIMURA ,  Katsutoshi OHNO

IPC: C07C249/04 ,  C08K5/29 ,  C08L75/04 ,  C07D231/12

Abstract: The invention is related to a composition excellent in stability during storage and excellent stability during utilization, and related to a method of producing the composition. The composition comprises a compound (A) represented by general formula (1) and a compound (B). The compound (B) is an oligomer in which two or more molecules of the compound (A) are bonded to each other by ethylenically unsaturated groups of each compound (A). The composition contains 0.00002 to 0.2 parts by mass of the compound (B) with respect to 100 parts by mass of the compound (A), (R1—COO)n—R2—(NCO)m  (1) wherein in general formula (1), R1 is an ethylenically unsaturated group having 2 to 7 carbon atoms; R2 is a (m+n)-valent hydrocarbon group having 1 to 7 carbon atoms and optionally contain an ether group; and n and in each represent an integer of one or two.