| abstract |
(57) The present invention provides an epoxy compound and at least one compound of the formula 1: Wherein R 1 and R 2 may be the same or different and represent H or C 1-4 alkyl, and m is 1. According to formula 1 wherein R 1 and R 2 are absent, m is 2, R 3 to R 6 may be the same or different, and H or C Represents 1-4 alkyl. And an epoxy group-containing addition product obtained by mixing and condensing with the bicyclic phosphite according to the above. |