To obtain the subject new compound, excellent in biodegradability and metal masking properties and useful as a chelating agent for various metals.
This compound is represented by formula I [R1 to R10 are each H, an aliphatic group, an aromatic group of hydroxy; W is a bivalent connecting group having a ≤5C main chain; X1 is H, an alkyl, hydroxyethyl, an alkoyalkyl, an aralkyl or hydroxy; X2 is an alkyl, an aralkyl, hydroxy, hydroxyethyl or an alkoxyalkyl; M1 to M4 are each H or a cation; (t) and (u) are each 0]. The compound represented by formula I is obtained by introducing a substituent group onto N of, e.g. a compound represented by formula II [(t) and (u) are each 0-5] afterwards or introducing succinic acid groups into a diamine derivative having a substituent group to produce a dicarboxylic acid compound.
HIRANO SHIGEO
MORIMOTO KIYOSHI
