公开(公告)号：US20180238842A1

公开(公告)日：2018-08-23

申请号：US15752322

申请日：2016-08-23

Applicant: SHOWA DENKO K.K.

Inventor： Junya KATO ,  Hideyuki KONDO ,  Naoko MARUOKA ,  Anne RIESS

IPC: G01N30/60 ,  G01N30/56 ,  B01D15/22 ,  G01N30/88 ,  B01J20/285 ,  B01J20/26

CPC classification number: G01N30/6052 ,  B01D15/22 ,  B01J20/265 ,  B01J20/285 ,  G01N30/56 ,  G01N30/603 ,  G01N30/88 ,  G01N2030/524

Abstract: A liquid chromatographic column includes: a cylindrical column body; an inflow-side filter that is disposed at an eluent inflow-side end of the column body; an outflow-side filter that is disposed at an eluent outflow-side end of the column body; and a filler that is filled between the inflow-side filter and the outflow-side filter, in which the inflow-side filter has a two-layer structure consisting of a first resin filter member and a second resin filter member which are disposed in this order from a side of the filler, and the first resin filter member has an indentation elastic modulus lower than that of the second resin filter member.

公开(公告)号：US20200061580A1

公开(公告)日：2020-02-27

申请号：US16609321

申请日：2018-06-29

Applicant: SHOWA DENKO K.K.

Inventor： Naoya NAKAJIMA ,  Natsuki ODA ,  Junya KATO

IPC: B01J20/281 ,  G01N30/88 ,  B01D15/36

Abstract: A packing material for liquid chromatography, including particles of a copolymer having a monomer unit derived from a (meth)acrylic acid ester and a monomer unit derived from divinylbenzene, wherein a ratio between the monomer unit derived from a (meth)acrylic acid ester and the monomer unit derived from divinylbenzene is 70 mass % to 90 mass %:30 mass % to 10 mass %, wherein the particles each have a sulfo group bonded to a surface thereof and a structure in which the sulfo group is bonded includes a structure represented by the formula (1): where R X and n are as defined herein, and wherein the particles each include the sulfo group at from 40 μmol/g to 300 μmol/g. Also disclosed is a method of producing the packing material, a column packed with the packing material, and a method of analyzing glycated hemoglobin.

公开(公告)号：US20190204278A1

公开(公告)日：2019-07-04

申请号：US16302253

申请日：2017-05-25

Applicant: SHOWA DENKO K.K.

Inventor： Hideyuki KONDO ,  Junya KATO ,  Naoko MARUOKA

IPC: B01J20/281 ,  G01N30/56 ,  G01N30/32

CPC classification number: G01N30/482 ,  G01N30/26 ,  G01N30/32 ,  G01N30/56 ,  G01N30/88 ,  G01N2030/027 ,  G01N2030/324 ,  G01N2030/484 ,  G01N2030/562

Abstract: A liquid chromatography packing material employing crosslinked polymer particles, wherein the volume average particle size of the crosslinked polymer particles is at least 2 μm but not more than 10 μm, the amount of fine particles having a particle size of 1 μm or less among the crosslinked polymer particles is less than 1% by volume, and the identity coefficient in the particle size distribution is not more than 1.15.

公开(公告)号：US20180104669A1

公开(公告)日：2018-04-19

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

CPC classification number: B01J20/267 ,  B01D15/34 ,  B01J20/285 ,  B01J20/291 ,  B01J2220/54 ,  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：US20190184372A1

公开(公告)日：2019-06-20

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 ,  B01J20/285 ,  B01J20/28 ,  G01N30/88 ,  B01J20/281

CPC classification number: B01J20/267 ,  B01D15/00 ,  B01D15/38 ,  B01D15/42 ,  B01J20/26 ,  B01J20/28 ,  B01J20/28004 ,  B01J20/28083 ,  B01J20/281 ,  B01J20/285 ,  B01J2220/54 ,  B01J2220/58 ,  B01J2220/86 ,  G01N30/482 ,  G01N30/88 ,  G01N2030/8836

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.