Syntheses of Phosphatriazines for Potential High Temperature Fluids and Elastomers Applications.
Abstract
The symmetrical and unsymmetrical tetraazacyclooctooctatetraenes were found to be thermally less stable than the analogously substituted six-membered phospha-s-triazines. Both materials at 316 degrees C underwent transformation to phospha-s-triazines; the symmetrical arrangement giving diphospha-s-triazine and the corresponding nitrile; the unsymmetrical isomer forming monophospha-s-triazine and diphenylphosphazene trimer. No polymeric compounds could be synthesized having the symmetrical octatetraene ring arrangement as a chain component; only bicyclics were formed. Unsymmetrical polydiphosphatetraaza-cyclooctatetraenes having thermal and thermal oxidative stabilities directly comparable to those of their monomeric analogues were successfully prepared.
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 30, 1982
- Accession Number
- ADA115107
Entities
People
- D. H. Harris
- J. H. Nakahara
- K. L. Paciorek
- R. H. Kratzer
- T. I. Ito