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HIGH-TEMPERATURE-RESISTANT PHTHALOCYANINE POLYMERS.
Final rept. 1 Nov 64-31 Oct 65,
GENERAL PRECISION INC LITTLE FALLS N J AEROSPACE RESEARCH CENTER
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A method was developed for the large-scale preparation and subsequent purification of dichlorosilicon phthalocyanine. This important monomer intermediate was then converted to various derivatives, including dihydroxysilicon phthalocyanine, diisocyanatosilicon phthalocyanine and dithiocyanatosilicon phthalocyanine. The chemistry of the metallophthalocyanine pseudohalides showed anomalous behavior. Treatment of these monomers under a variety of reaction conditions with bishydroxymethylcarborane gave similar but not identical bisoxymethylcarboranesiloxyphthalocyanine condensation copolymer intermediates. Five distinct methods for the synthesis of this copolymer system were developed. Depending on the method of synthesis, the various bisoxymethylcarborane- siloxyphthalocyanine copolymer products showed selective and good solubility in benzene, toluene, amines or other solvents. Various polymer chain extension and cross-linking techniques were investigated. A by-product of this work was the development of a route to polycarboranylethyletylenes. Thermal stability tests were run on some model compounds and on the 32 bishydroxymethyl carborane- siloxyphthalocyanine condensation copolymer. The heat resistance of PcAICI 540C is superior to that of PcSiC12 and PcTiO 450C and the copolymer intermediate is stable to about 360C in air. Author
APPROVED FOR PUBLIC RELEASE