Method for preparation of macroporous amphoteric ion exchangers with highly crosslinked hydrophilic polymeric matrix
US4097420A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 7, 1975 |
| Grant date | Jun 27, 1978 |
| Priority date | — |
| Expiry date | Feb 7, 1995 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F265/06
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The invention relates to a method for preparation of hydrophilic macroporous ion exchangers of the amphoteric character which are suitable above all for isolation and separation of biological materials. The preparation consists in copolymerization of anionogenous monomers, as sulfoalkyl acrylates and methacrylates, sulfoalkylacrylamides, sulfoalkylmethacrylamides, acrylic and methacrylic acid, with cationogenous monomers, as aminoalkyl acrylates and methacrylates, aminoalkylacrylamides, aminoalkylmethacrylamides and their quaternary ammonium derivatives, and with crosslinking monomers, as alkylene or oligo and polyglycol diacrylates and dimethacrylates, bisacrylamides, bismethacrylamides and divlnylbenzene, in the water dispersion system containing inert organic compounds, as alcohols, acids, amines or nitriles. Amphoteric ion exchangers are also prepared by sorption and neutralization of the macroporous hydrophilic cation exchangers with basic monomers, as vinylpyridines, aminoalkyl acrylates and methacrylates, aminoalkylacrylamides, aminoalkylmethacrylamides and their quaternary ammonium derivatives, and their subsequent copolymerization with the pendant double bonds of the catio…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.