Polymer packing material for liquid chromatography and a producing method thereof
US5990182A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 15, 1998 |
| Grant date | Nov 23, 1999 |
| Priority date | — |
| Expiry date | Sep 15, 2018 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J2220/54
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method of producing a polymer packing material for liquid chromatography includes the steps of swelling seed polymer particles to form swelled particles, polymerizing monomers in the swelled particles under existence of diluent, and removing the diluent to form porous polymer particles, wherein the step of polymerizing the monomers is conducted under existence of a compound having a conjugated double bond not reactive with the monomers and having a molecular weight of 100-500. Alternatively, the polymerization process may be conducted by an oxidation reduction polymerization process. Further, the porous polymer particles obtained after removal of the diluent may be subjected to a heat treatment process at a temperature of 100.degree. C. or higher.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.