Polyphosphazenes bearing crown ether and related podand side groups as solid solvents for ionic conduction
US5567783A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 7, 1995 |
| Grant date | Oct 22, 1996 |
| Priority date | — |
| Expiry date | Mar 7, 2015 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G79/025
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Polyphosphazene polymers having crown ether and related podand side groups have been prepared. The polymers are useful as solid solvents for ionic conduction. Branched polyphosphazene polymers having the formula [NP(OCH.sub.2 CH(CH.sub.2 O(CH.sub.2 CH.sub.2 O).sub.m R)(O(CH.sub.2 CH.sub.2 O).sub.m R)).sub.2 ].sub.n, as well as the corresponding crown ether polyphosphazenes, were synthesized where m=0-3 and R is C1-C4 alkyl. The physical properties of these polymers were compared with the related polymer poly[bis(2-(2-methoxyethoxy)-ethoxy)phosphazene], MEEP. Also, a series of poly(organophosphazenes) which bear oligoethylenoxy side groups has been synthesized and characterized. The polymers have the general formula [NP(O(CH.sub.2).sub.m CH.sub.3).sub.x (OCH.sub.2 CH.sub.2 OCH.sub.2 CH.sub.2 OCH.sub.3).sub.y ].sub.n, where x and y are approximately 1 and m ranges from 1-20.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.