| abstract |
The present invention relates to a 3-oxo-2-arylisoindoline diphthalonitrile monomer, a preparation method, a thermosetting composition containing it and uses thereof, specifically 4,4' of formula (1) ‑(((3‑oxo‑isoindoline‑1,1‑diyl)bis(4,1‑arylene))bis(oxy))diphthalonitrile compound, where each occurrence R 1 is independently hydrogen, phenyl or C 1-6 alkyl, more preferably hydrogen or C 1-3 alkyl; each occurrence of R 2 and R 3 is independently hydrogen, halogen or C 1-25 Hydrocarbyl, preferably hydrogen or C 1-6 alkyl, more preferably hydrogen or C 1-3 alkyl; and r, p and q are each independently 0 to 4, more preferably 0 or 1, preferably 0. |