Thionyl phosphazene polymers
US5241017A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 10, 1992 |
| Grant date | Aug 31, 1993 |
| Priority date | — |
| Expiry date | Mar 10, 2012 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G79/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The new thionyl phosphazene polymers, which contain recurring structural units corresponding to the following formula ##STR1## are prepared by ring-opening polymerization of cyclothionyl chlorophosphazene corresponding to the following formula ##STR2## at temperatures of 100.degree. to 300.degree. C. in the presence of an inert organic solvent and reaction of the polymer thus obtained, which corresponds to the following formula ##STR3## with salts corresponding to the following formula EQU M(R.sup.1 -R.sup.5) in the presence of an inert organic solvent at temperatures of 20.degree. to 200.degree. C. The new thionyl phosphazene polymers may be used for the production of thermoplastics, elastomers or thermosets.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.