| abstract |
Diglycidyl unsaturated ketones of formula ##STR1## e.g., 1,5-bis(p-glycidyloxyphenyl)-1,4-pentadien-3-one, are prepared by condensing one molar equivalent of a ketone of formula n n R.sup.1 -CH.sub.2 COCH.sub.2 -R.sup.2 n n with two molar equivalents of an o- or p- glycidyloxybenzaldehyde of formula ##STR2## in the presence of a basic catalyst, where R represents an alkyl or alkoxy group of 1 to 5 carbon atoms, an alkenyl group of 2 to 5 carbon atoms, a carbalkoxy group of 2 to 10 carbon atoms, a cycloalkyl group of 5 to 8 carbon atoms, a halogen atom, a nitro group, or a carboxyl, sulfonic acid, or phosphonic acid group in the form of a salt, n m represents zero or 1 to 4, and n R 1 and R 2 each represent a hydrogen atom or an alkyl group of 1 to 5 carbon atoms, or together form a straight chain or branched alkylene group of 2 to 6 carbon atoms. n The products are useful as photopolymerizable resins. |