Terminated Bis(3,4-Dicyanophenoxy) Alkanes.
DEPARTMENT OF THE NAVY WASHINGTON DC
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The objective of the present invention is to provide a polyphthalocyannine resin which has an elastic modulus high enough to permit use of the resin in the fabrication of structural components of aircraft, helicopters, and automobiles which are exposed to severe andor constant mechanical stresses and strains. A further object of the invention is to provide a class of bisorthodinitriles terminated dicyanophenoxy alkanes which are polymerizable to polyphthalocyanine resins. And another object of the present invention is to provide a method of synthesising these dicyanophenoxy alkanes inexpensively and in a high yield and purity. These and other objects are achieved by preparing a terminated dicyanophenoxy alkane from the corresponding diol and 4-nitrophthalonitriles and by heating the alkoxy-bridged bisorthodinitrile to form a resin having flexible bridging chains.