HIGH TEMPERATURE POLYMERS FROM 1,3-DIPOLAR ADDITION REACTIONS.
Abstract
The suitability of disubstituted acetylenes, quinones, and isocyanates as dipolarophiles in polymer forming reactions with tetrazoles was investigated. The reaction of phenylisocyanate with 2,5-diphenyltetrazole yielded the model compound 1,3,4-triphenyl-1,2,4-triazolone. The other dipolarophiles did not yield the expected model compounds. The synthesis of an A-B monomer, 2-phenyl-5-(4-ethynylphenyl)-tetrazole is being attempted from p-tolualdehyde. The polymerization reactions of 2,2'-diphenyl-5,5'-m-phenylene-ditetrazole with m- and p-diethynylbenzene, tetrafluoro terephthalonitrile, terephthalonitrile, and 4,4'-dicyanobiphenyl were carried out to yield poly(1,1'-diphenyl-3,3'-m-phenylene-5,5'-m-phenylenedipyrazole), poly(1,1'-diphenyl-3,3'-m-phenylene-5,5'-p-phenylenedipyrazole), poly(1,1'-diphenyl-3,3'-m-phenylene-5,5'-(tetrafluoro-p-phenylene)-ditriazole), poly(1,1'-diphenyl-3,3'-m-phenylene-5,5'-p-phenyleneditriazole) and poly(1,1'-diphenyl-3,3'-m-phenylene-5,5'-p-biphenyleneditriazole) respectively. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 30, 1968
- Accession Number
- AD0831529
Entities
People
- J. K. Stille
Organizations
- University of Iowa