Accession Number : AD0701028

Title :   POLYMERIZATION OF DIMETHYLCYCLOSILAZANES IN THE PRESENCE OF AMMONIUM CHLORIDE,

Corporate Author : FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO

Personal Author(s) : Rumba,G. Ya. ; Zviedre,I. I

Report Date : 02 SEP 1969

Pagination or Media Count : 12

Abstract : Experiments were conducted to obtain dimethylsilazane polymers by catalytic polymerization of dimethylcyclosilazanes in the presence of ammonium chloride and hexamethyldisilazane with and without pressure. Ammonium chloride was found to promote not only the polymerization of dimethylcyclosilazenes but also their polycondensation, especially at temperatures above 300 degrees centigrade. Due to slow decomposition by ammonium halides, the hexamethyldisilazane is hardly suitable for chain breaking during the polymerization of dimethylcyclosilazanes. (Author)

Descriptors :   (*SILICON COMPOUNDS, *INORGANIC POLYMERS), (*NITROGEN COMPOUNDS, INORGANIC POLYMERS), NITROGEN HETEROCYCLIC COMPOUNDS, POLYMERIZATION, SYNTHESIS(CHEMISTRY), AMMONIUM COMPOUNDS, USSR

Subject Categories : Polymer Chemistry
      Plastics

Distribution Statement : APPROVED FOR PUBLIC RELEASE