Terminated bis(3,4-dicyanophenoxy) alkanes
AssigneeThe United States of America as represented by the Secretary of the Navy
InventorsTeddy M. Keller, James R. Griffith
Life of this patent
Estimating the term…
Abstract
Terminated bis(3,4-dicyanophenoxy) alkanes, wherein the alkylene chain is om 2 to 30 carbon atoms in length, is prepared by the reaction of 4-nitrophthalonitrile with a terminated alkane diol at elevated temperatures. A polyphthalocyanine resin is obtained by heating the dicyanophenoxy alkanes neat or with a salt or metal at a temperature from about 180.degree. C. to about 245.degree. C. The polyphthalocyanine resin is useful as a high-temperature structural or composite material which is highly resistant to mechanical stresses and strains.
Claims8
A terminated dicyanophenoxy alkane of the general formula:
- ##STR6## wherein A is an alkylene with a length from 2 to 30 carbon atoms provided that the .alpha.- and .beta.-carbon atoms are not substituted and that no branching chain is more than five carbon atoms in length.
Dependencies are inferred from the claim text.