Accession Number : ADD018411

Title :   Novel Linear Metallocene Polymers Containing Acetylenic and Inorganic Units and Thermosets and Ceramics Therefrom.

Descriptive Note : Patent Application, Filed 14 Mar 97,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Keller, Teddy ; Houser, Eric J

PDF Url : ADD018411

Report Date : 14 Mar 1997

Pagination or Media Count : 53

Abstract : Transition metal containing ceramic or carbonaeous material are formed from novel linear polymers containing a random distribution of repeating acetylenic units, organotransition metal complexes, Siloxane, boron, Silicon, and/or carborane-siloxane units. The precursor thermosets are formed by crosslinking of the linear polymers through the acetylenic units in the polymer backbone. The ceramics may also be formed directly by pyrolysis of the linear polymers. The preceramic polymers are potentially useful for fabricating ceramic fibers and composite materials having enhanced strength, hardness and toughness as well as superior mechanical, optical, electrical and/or magnetic properties.

Descriptors :   *TRANSITION METALS, *PATENT APPLICATIONS, *POLYMERS, *COMPOSITE MATERIALS, *CROSSLINKING(CHEMISTRY), *THERMOSETTING PLASTICS, LINEAR SYSTEMS, TOUGHNESS, SILOXANES, HIGH STRENGTH, SILICON, CERAMIC FIBERS, BORON, HARDNESS, PYROLYSIS, METAL COMPLEXES, CARBORANES, ACETYLENES

Subject Categories : Polymer Chemistry
      Ceramics, Refractories and Glass
      Laminates and Composite Materials

Distribution Statement : APPROVED FOR PUBLIC RELEASE