IP Library Patent Application 18551755
Patent Application
App. No. 18/551,755

METHOD FOR PRODUCING CHROMATOGRAPHY CARRIER, METHOD FOR PRODUCING CHROMATOGRAPHY COLUMN, AND CHROMATOGRAPHY CARRIER

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Patent No.
US None
App. No.
18/551,755
Abstract

A chromatography carrier may exhibit high liquid permeability and an excellent pressure-resistant characteristic during liquid passage. A chromatography carrier production method may include: (1) providing a solid phase support, the solid phase support being formed of porous particles on which a ligand has or has not been immobilized; and (2) subjecting the solid phase support to sieve classification, the coefficient of variation of the volume particle size distribution of the porous particles when a ligand has been immobilized being adjusted to 1% to 22%. The skewness of the volume particle size distribution of the porous particles when a ligand has been immobilized may be adjusted to −0.1 to 5.

Claims (37)

1 . A method for producing a chromatography carrier, the method comprising:

subjecting a solid phase support to sieve classification, the solid phase support being formed of porous particles on which a ligand has or has not been immobilized,

wherein a variation coefficient of volume particle size distribution of the porous particles when the ligand has been immobilized is adjusted to be in a range of from 1% to 22%, and

wherein a skewness of volume particle size distribution of the porous particles when the ligand has been immobilized is adjusted to be in a range of from −0.1 to 5.

2 . The method of claim 1 ,

wherein the solid phase support is formed of the porous particles on which the ligand has been immobilized.

3 . The method of claim 1 ,

wherein the solid phase support is formed of porous particles on which the ligand has not been immobilized.

4 . The method of claim 3 , further comprising:

immobilizing the ligand onto the porous particles which have undergone the sieve classification.

5 . method of claim 1 , wherein the sieve classification further comprises:

(2a) performing a sieve classification with a first sieve having a mesh opening of 10% or greater and smaller than 200%, with respect to a mean volume diameter of the solid phase support before sieve classification (2α-d) as 100%, to thereby recover a residue over a sieve;

(2b) performing a sieve classification of the residue with a second sieve having a mesh opening greater than that of the first sieve of the sieve classification (2a) and smaller than 600% of a particle size of the solid phase support before the sieve classification (2α-d), to thereby recover a matter having passed through the second sieve,

wherein the sieve classification (2a) and the sieve classification (2b) are performed in that order or in reverse order.

6 . The method of claim 1 , wherein the sieve classification is a wet process.

7 . The method of claim 1 , wherein the variation coefficient is in a range of from 5% to 20%, and

wherein the skewness is in a range of from 0.01 to 3.

8 . A chromatography carrier production method of claim 1 , further comprising:

dispersing a monomer composition in an aqueous medium and conducting suspension polymerization prior to the subjecting.

9 . A method for producing a chromatography column, the method comprising:

charging a carrier into a column vessel,

wherein the carrier is formed of porous particles onto which a ligand has been immobilized,

wherein a variation coefficient of volume particle size distribution of the carrier is in a range of from 1% to 22%, and

wherein a skewness of volume particle size distribution of the carrier is in a range of from −0.1 to 5.

10 . A chromatography carrier, which is dispersed in a dispersion medium, wherein the carrier is formed of porous particles onto which a ligand has been immobilized,

wherein a variation coefficient of volume particle size distribution of the carrier is in a range of from 1% to 22%, and

wherein a skewness of volume particle size distribution of the carrier is in a range of from −0.1 to 5.

11 . The chromatography carrier of claim 10 , wherein the carrier has a volume cumulative 50% particle size d50 in a range of from 55 μm to 100 μm.

12 . The chromatography carrier of claim 10 , wherein the carrier has a volume cumulative 1% particle size d1 in a range of from 30 μm to 75 μm.

13 . The method of claim 2 , wherein the solid phase support is a synthetic polymer porous particle onto which the ligand has been immobilized.

14 . The method of claim 3 , wherein the solid phase support is a synthetic polymer porous particle onto which the ligand has not been immobilized.

15 . The method of claim 5 , wherein the mesh opening is of 62% or greater and 90% or less of the particle size of the solid phase support before the sieve classification (2α-d).

16 . The method of claim 1 , wherein the variation coefficient is in a range of from 8% to 18%, and

wherein the skewness is in a range of from 0.1 to 3.

17 . The method of claim 1 , wherein, in the performing, the sieve classification is performed so that volume cumulative 1% particle size d1 is adjusted to be in a range of from 35 μm to 65 μm.

18 . The method of claim 1 , wherein, in the performing, the sieve classification is performed so that volume cumulative 5% particle size d1 is adjusted to be in a range of from 40 μm to 65 μm.

19 . The method of claim 1 , wherein, in the performing, the sieve classification is performed so that the ratio (d5/d50) of volume cumulative 5% particle size d5 to volume cumulative 50% particle size d50 is in a range of from 0.70 to 0.95.

Assignments (4)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jun 3, 2026
From: MERCK LIFE SCIENCE KGAA
To: MERCK PATENT GMBH
Reel/Frame 074837/0686 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Apr 17, 2026
From: JSR CORPORATION
To: MERCK LIFE SCIENCE KGAA
Reel/Frame 074403/0101 →
MERGER AND CHANGE OF NAME Recorded Feb 18, 2025
From: JSR CORPORATION; JICC-02 CO., LTD.
To: JSR CORPORATION
Reel/Frame 070242/0547 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Sep 21, 2023
From: KOBAYASHI, KUNIHIKO; AKIYAMA, MINATO; INOUE, YUKIYA; KIKUCHI, MASAHIRO
To: JSR CORPORATION
Reel/Frame 064985/0563 →