PHTHALONITRILE THERMOSET POLYMERS AND COMPOSITES CURED WITH HALOGEN-CONTAINING AROMATIC AMINE CURING AGENTS and process for producing them

摘要

Phthalonitrile thermoset polymers and composites having flame resistance are formed by combining a phthalonitrile monomer in the melt stage with a halogen-containing aromatic amine curing agent. The halogen-containing aromatic amine curing agent is selected from the group consisting of aromatic amine curing agents having the general formula: NH2-(Ar2O-)y Ar?1-X-Ar1 (-OAr2)¿y-NH2, wherein Ar?1 and Ar2¿ are substituted or unsubstituded aromatic groups, y is 0 or greater, and X is -C(CF¿3?)2- and aromatic amine curing agents having the general formula: NH2-(Ar?4O-)¿u Ar?3-Z-Ar3 (-OAr4)¿u-NH2, wherein Z is a connecting bond or a linking group other than oxygen or -C(CF3)2-, u is 0 or greater, and Ar?3 and Ar4¿ are aromatic groups and wherein either Ar?3 or Ar4¿ or both Ar?3 and Ar4¿ are substituted with at least one halogen atom or halo-substituted alkyl group.