Novel nitrogen-containing aromatic polymers and process for their preparation
US4086209A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 20, 1975 |
| Grant date | Apr 25, 1978 |
| Priority date | — |
| Expiry date | Feb 20, 1995 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G73/02
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Novel substantially linear, or at least partially cross-linked, nitrogen-containing polymers having an aryleneimine or arylenether unit in the main chain with an amino group or a group derived from it being bonded as a pendant group to a nuclear carbon atom of the arylene group of the above unit. According to the number and type of the pendant groups, the polymers can have various useful properties such as thermal stability, hydrophilicity, oxidative reducibility, photosensitivity, color formability or the ability to form coordination bonds. Furthermore, the polymers have good solubility in aprotic polar organic solvents. Permselective membranes having good performance can be prepared from solutions of the polymers in these solvents.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.