Process for the chromatographic separation of a mixture of polyglycerols
US5431822A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 15, 1994 |
| Grant date | Jul 11, 1995 |
| Priority date | — |
| Expiry date | Feb 15, 2014 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC12C11/02
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A description is given of a process for the separation of at least one constituent from a mixture containing at least two polyglycerols having consecutive degrees of polymerization from 2 to 10, in which said mixture is passed into at least one column lined with an adsorbent particular phase through which flows a liquid eluent, said phase consisting of a cationic organic resin such as a styrene-divinyl benzene copolymer or an anionic resin, or a mineral phase chosen from among silicas, aluminas and zeolites in normal form or modified by grafting, said liquid eluent consisting of an aqueous phase to which is optionally added a strong acid. The process described can be performed continuously or batchwise and in simulated counter-current (SCC) or simulated cocurrent manner.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.