Process for removing unsaturation from ion exchange resins containing unquaternized amino groups by hydrogenation with imine
US4221872A · kind A · utility
2Cited by
2References
18Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 20, 1978 |
| Grant date | Sep 9, 1980 |
| Priority date | — |
| Expiry date | Nov 20, 1998 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J49/40
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A process of removing unsaturation from resins by reaction with diimine. Thermally regenerable ion exchange resins are prepared by the hydrogenation of unsaturated polymers containing unquaternized amino groups with diimine. Procedures for generating the reactive diimine intermediate from precursors such as hydrazine are described.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.