Accession Number : AD0481476

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

Descriptive Note : Quarterly progress rept. no. 5, 1 Feb-30 Apr 66,

Corporate Author : IOWA UNIV IOWA CITY DEPT OF CHEMISTRY

Personal Author(s) : Stille, John K.

Report Date : 30 APR 1966

Pagination or Media Count : 15

Abstract : The syntheses of 4,4'-oxydi(N-nitrosophenyl glycine) and perfluoroglutaryl phenylhydrazide chloride, intermediates in the synthesis of a sydnone dipole and a nitrilimine dipole, respectively, were accomplished. A model compound, 1,1,3,3'-tetraphenyl-5,5'-m-phenylene-di-delta-pyrazoline from the reaction of benzoylphenylhydrazide chloride and m-divinylbenzene in the presence of triethylamine was prepared. The polymerization reaction of p-phenylene-3,3'-disydnone with p-benzoquinone afforded poly(2,4,6,8-tetrahydro-4,8-dioxo-2,6-p-phenylenepyrazolo (3,4-f)indazole) which had good thermal stability and an inherent viscosity of 0.6. The polymerization reaction of terephthaloyl phenylhydrazide chloride with m-divinylbenzene gave poly(1,1'-diphenyl-3,3'-p-phenylene-5,5'-m-phenylenedi-delta--pyrazoline). Cross-linking reactions in these polymers containing pyrazole units in the chain can apparently be carried out by heating the polymers at 275 C under reduced pressure. (Author)

Descriptors :   *NITROGEN HETEROCYCLIC COMPOUNDS), (*HEAT RESISTANT PLASTICS, SYNTHESIS(CHEMISTRY)), (*POLYMERS, POLYMERIZATION, CROSSLINKING(CHEMISTRY), POLYCYCLIC COMPOUNDS, KETONES, FLUORINE COMPOUNDS, CHLORINE COMPOUNDS, HYDRAZINE DERIVATIVES, AMINO ACIDS, AROMATIC COMPOUNDS, VISCOSITY, MOLECULAR WEIGHT, THERMAL STABILITY, DIPOLE MOMENTS.

Subject Categories : Polymer Chemistry
      Plastics

Distribution Statement : APPROVED FOR PUBLIC RELEASE