Accession Number:

AD0831529

Title:

HIGH TEMPERATURE POLYMERS FROM 1,3-DIPOLAR ADDITION REACTIONS.

Descriptive Note:

Quarterly progress rept. no. 13, 1 Feb-30 Apr 68,

Corporate Author:

IOWA UNIV IOWA CITY DEPT OF CHEMISTRY

Personal Author(s):

• Stille, J. K.

Report Date:

1968-04-30

Pagination or Media Count:

19.0

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 poly1,1-diphenyl-3,3-m-phenylene-5,5-m-phenylenedipyrazole, poly1,1-diphenyl-3,3-m-phenylene-5,5-p-phenylenedipyrazole, poly1,1-diphenyl-3,3-m-phenylene-5,5-tetrafluoro-p-phenylene-ditriazole, poly1,1-diphenyl-3,3-m-phenylene-5,5-p-phenyleneditriazole and poly1,1-diphenyl-3,3-m-phenylene-5,5-p-biphenyleneditriazole respectively. Author

Descriptors:

• *HEAT RESISTANT PLASTICS
• *NITROGEN HETEROCYCLIC COMPOUNDS
• SYNTHESIS(CHEMISTRY)
• ALKYNES
• QUINONES
• IMIDES
• ADDITION REACTIONS
• ALDEHYDES
• NITRILES
• HALOGENATED HYDROCARBONS
• FLUORINE COMPOUNDS
• THERMAL STABILITY
• SUBSTITUTION REACTIONS
• POLYMERS
• ISOCYANATES

Subject Categories:

• Polymer Chemistry
• Plastics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE