Accession Number : AD0703678

Title :   ICOSAHEDRAL CARBORANES. XVII. THE PREPARATION OF LINEAR POLY-M-CARBORANYLENESILOXANES.

Descriptive Note : Technical rept.,

Corporate Author : OLIN CORP NEW HAVEN CONN CHEMICALS GROUP

Personal Author(s) : Knollmueller,Karl O. ; Scott,Robert N. ; Kwasnik,Herbert ; Sieckhaus,John F.

Report Date : 13 APR 1970

Pagination or Media Count : 37

Abstract : The first members of the series of poly-m-carboranylenesiloxanes were synthesized by the ferric chloride catalyzed condensation of methoxy and chloro terminated monomers and generally obtained as insoluble crosslinked gums. It has now been discovered that long chain, linear polymers can be prepared by simple hydrolytic condensation of m-B10H10C2(SiMe2OSMe2Cl)2 and m-B10H10C2(SiMe2OSiMe2-OSiMe2Cl) at ice bath temperature, as well as by acid catalyzed condensation of the corresponding silanols. In addition, phenyl substituted copolymers have been obtained which show outstanding thermo-oxidative stability at elevated temperature. These linear polymers are soluble waxes and liquids with molecular weights between 16,000 and 30,000, are potentially useful as high temperature liquids and coatings, and can be cured at room temperature to form elastomers. (Author)

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

Subject Categories : Polymer Chemistry
      Plastics

Distribution Statement : APPROVED FOR PUBLIC RELEASE