CARBORANE CHEMISTRY: SYNTHESIS AND POLYMERIZATION
Final rept. 1 Mar 1964-31 Dec 1969
AEROJET-GENERAL CORP EL MONTE CA SPACE DIV
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Discussed are the accomplishments of a five year research program concerning carboranes. A high-yield, continuous flow synthesis of C2B3H5, C2B4H6, and C2B5H7 involving direct reaction between pentaborane-9 and acetylene was discovered, and a pilot plant capable of turning out a pound-per-hour of product was built and operated. C2B5H7 polymers have been synthesized, and, as might have been expected because of the smaller carborane moiety, they are somewhat less crystalline and more elastic than their C2B10H12 counterparts. Also, improvements in elastic properties were achieved by incorporating small percentages of larger molecules, such as vinyl-C2B10H12, in the polymer chains. Also briefly discussed are 18 technical reports which were issued during the research period.
- Polymer Chemistry