Abstract
The study was conducted on the reaction of amides with glycidylether type epoxides and the reaction of aromatic polyamides with epoxy resins. The degree of the reaction of phenylglycidylether (PGE) with anilides was higher than that with N-methylamides : this is due to the fact that the former proceeds mainly by the insertion of an epoxy group into the C-N linkage of an amide group. This insertion reaction took place most easily when imidazoles were used as a catalyst. In the reaction of aromatic polyamides (PA) with 2-function epoxy compounds (epoxy resins ; EP), the insertion reaction has also been recognized by examining IR-spectrum of a PA-EP reaction product. Tg and elastic modulus in the rubber region of the PA-EP reaction product were higher than those of PA. The phenomenon is considered to result from crosslinking of PA with EP by the insertion reaction.
