CROSS-LINKING OF CARBOXYL FUNCTIONAL (METH)ACRYLATE COPOLYMERS WITH BISKETENEIMINE

The bisketeneimine Ph2C=C=N-C6H4-N=C=CPh2 1 has been used as a crossli nker for carboxyl functional (meth)acrylate copolymers of various mola r masses, in which the COOH group is attached to the backbone through spacers of various length. The crosslinking reaction, carried out at v arious temperatures, was monitored by infrared spectroscopy and by dyn amic mechanical analysis. From a modelreaction with nonanoic acid kine tic parameters were calculated. The products poly(meth)acrylate-polyim ide networks were characterised by NMR and FTIR spectroscopy. The ther mal stability (TGA measurement) was comparable to that of a correspond ing polyurethane.