HIGH-TEMPERATURE-RESISTANT PHTHALOCYANINE POLYMERS.
Quarterly progress rept. no. 3, 1 May-31 Jul 65.
GENERAL PRECISION SYSTEMS INC LITTLE FALLS N J AEROSPACE RESEARCH CENTER
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PcSiSCN2 was prepared from PcSiCl2 and silver thiocyanate. Spectral evidence indicated that the product has the normal configuration S-bonded rather than the iso configuration N-bonded. Two polymeric materials were isolated when equimolar amounts of PcSiOH2 and bishydroxymethylcarborane were heated at 400C under nitrogen. Both products appear to be polymers at different molecular weights. It was determined that excess bishydroxymethylcarborane was required to drive the sulfuric acid solution condensation reaction with PcSiCl2 to completion. PcSiSCN2 and bishydroxymethylcarborane reacted at 200C to give a numer of different condensation products. One appeared to be a 11 condensation product, a second a 21 condensation product and a third a 32 condensation product similar to the 32 condensation product previously isolated from PcSiNCO2 and bishydroxymethylcarborane and appears to be a dicarboranyl ether bonded to a siloxy phthalocyanine. The 32 product polymerized by dehydration when heated to 400C in nitrogen. Boric oxide was the main product in air at 400C. Author