Accession Number : AD0727575

Title :   Icosahedral Carboranes. XIX. The Preparation of Linear Trifluoropropyl-Substituted Polycarboranylene-siloxanes.

Descriptive Note : Technical rept.,

Corporate Author : OLIN CORP NEW HAVEN CONN CHEMICALS GROUP

Personal Author(s) : Scott,Robert N. ; Knollmueller,Karl O. ; Hooks,Haywood , Jr ; Sieckhaus,John F.

Report Date : JUL 1971

Pagination or Media Count : 32

Abstract : A series of linear trifluoropropyl-substituted polycarboranylenesiloxanes with molecular weights between 3,500 and 13,000 has been prepared by the tetramethyl-guanidine/sulfuric acid catalyzed condensation of various silanol terminated momomers as well as by simple hydrolytic condensation of m-B10H10C2(SiMePfOSiMePfCl)2 and B5H5C2(SiMePfCl)2 (where P=-CH2CH2CF3). The polymers containing the C2B5H7 and C2B10H12 carboranes range from hard glasses to viscous gums and rubbers, are more thermally stable than fluorinated silicones with comparable resistance to solvents, and are potentially useful as high temperature fuel tank sealants. (Author)

Descriptors :   (*BORANES, CHEMICAL REACTIONS), (*SILOXANES, SYNTHESIS(CHEMISTRY)), HALOGENATED HYDROCARBONS, FLUORINE COMPOUNDS, POLYMERS, CONDENSATION REACTIONS, SEALING COMPOUNDS

Subject Categories : Polymer Chemistry
      Adhesives, Seals and Binders

Distribution Statement : APPROVED FOR PUBLIC RELEASE