Accession Number : AD0164293

Title :   Thermally Stable Silarylene-1,3,4-Oxadiazole Polymers Soluble in Organic Solvents.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON D C

Personal Author(s) : Kovacs,Hanna N. ; Delman,Alvin D. ; Simms,Bernard B.

Report Date : 02 MAR 1971

Pagination or Media Count : 12

Abstract : The patent describes aromatic silicon-containing polyoxadiazoles that are soluble in organic solvents and are oxidation resistant and generally stable up to about 400C. This includes poly(1,4-phenylene(diphenylsilyl) - 1,4 - phenylene-2,5-(1,3,4-oxadiazole)) prepared by thermal cyclodehydration of a polyhydrazide, and poly(1,4-phenylene(diphenylsilyl) - 1,4, - phenylene - (1,3,4 - oxadiazole-2,5 - diyl) - 1,4 - phenylene 2,5 - (1,3,4 - oxadiazole-2,5 - diyl) - 1,4 - phenylene - 2,5 (1,3,4 - oxadiazole)) and poly(1,4-phenylene(diphenylsily)-1,4-phenylene-(1,3,4 - oxadiazole - 2,5 -diyl) - 1,3 - phenylene - 2,5-(1,3,4-oxadiazole)).

Descriptors :   *Patents, *Oxadiazoles, *Polymers, *Silanes, Copolymerization, Synthesis(Chemistry), Silicon, Thermogravimetric analysis, Polymerization, Thermal stability, Aromatic compounds, Oxidation resistance

Subject Categories : Polymer Chemistry

Distribution Statement : APPROVED FOR PUBLIC RELEASE