Accession Number : AD0703677

Title :   ICOSAHEDRAL CARBORANES. XVI. POLYMERIZATION AND CROSSLINKING MECHANISM OF POLY-m-CARBORANYLENE-SILOXANES.

Descriptive Note : Technical rept.,

Corporate Author : OLIN CORP NEW HAVEN CONN CHEMICALS GROUP

Personal Author(s) : Dietrich,Heinz J. ; Alexander,Roy P. ; Heying,Theodore L. ; Kwasnik,Herbert ; Obenland,Clayton O.

Report Date : 13 APR 1970

Pagination or Media Count : 37

Abstract : The FeCl3 catalyzed bulk polymerization of a bis-(methoxysilyl)-m-carborane and a dichlorosilane resulting in a poly-m-carboranylenesiloxane raw gum (DEXSIL 200) was found to occur in three distinct parts: First, the low temperature polymerization stage which includes end group exchange and the subsequent formation of polydimethyl-siloxanes, second, the high temperature polymerization stage in which equilibration between carborane monomers and the polysiloxane occurs to produce polymeric material approximating DEXSIL 200 in composition, and third, the foaming stage in which the polymer chains are crosslinked to provide insoluble DEXSIL raw gum. (Author)

Descriptors :   (*BORANES, *POLYMERIZATION), (*SILANES, POLYMERIZATION), (*INORGANIC POLYMERS, BORANES), THERMAL STABILITY, CATALYSTS, IRON COMPOUNDS, CHLORIDES, SYNTHESIS(CHEMISTRY), CROSSLINKING(CHEMISTRY), SILOXANES, ANTIMONY COMPOUNDS

Subject Categories : Polymer Chemistry
      Plastics

Distribution Statement : APPROVED FOR PUBLIC RELEASE