Accession Number:

AD0837558

Title:

HIGH TEMPERATURE POLYMERS FROM 1,3-DIPOLAR ADDITION REACTIONS

Descriptive Note:

Final rept. 1 Feb 1965-30 Jun 1968

Corporate Author:

IOWA UNIV IOWA CITY DEPT OF CHEMISTRY

Personal Author(s):

• Stille, J. K.
• Gotter, L. D.
• Bedford, M. A.
• Harris, F. W.

Report Date:

1968-06-30

Pagination or Media Count:

54.0

Abstract:

Methods were sought for the synthesis of thermally stable, oil resistant elastomers based on chains containing aromatic heterocyclic rings. Three 1,3-dipole presursors, the sydnone, the hydrazide chloride, and the tetrazole systems were studied in terms of their usefulness as monomers for 1,3- dipolar addition reactions. Of the three, only the tetrazoles show promise as useful monomers. A series of polymers which possessed moderate viscosities, high thermal stabilities, and high polarity was generated via the 1,3-doplar addition reaction. In general, the polymers showed high second-order transition temperatures and efforts to decrease the transition temperature by incorporating flexible linkages into the polymer were unsuccessful. Methods of synthesis and characterization of monomers, model compounds, and polymers are described.

Descriptors:

• *ELASTOMERS
• *HEAT RESISTANT MATERIALS
• POLYMERS
• POLYMERIZATION
• TRANSITION TEMPERATURE
• OILS
• KETONES
• ADDITION REACTIONS
• NITROGEN HETEROCYCLIC COMPOUNDS
• HYDRAZINE DERIVATIVES
• OXYGEN HETEROCYCLIC COMPOUNDS
• DIPOLE MOMENTS
• ALKYNES
• NITRILES
• VISCOSITY
• AROMATIC COMPOUNDS
• THERMAL STABILITY
• SYNTHESIS(CHEMISTRY)

Subject Categories:

• Polymer Chemistry
• Elastomers and Rubber

Distribution Statement:

APPROVED FOR PUBLIC RELEASE