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：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.