| 摘要 |
Compounds of the formula: <IMAGE> (I) wherein R1 and R2 when taken independently, each represent the monovalent group of formula: <IMAGE> (II) wherein Y is a monovalent group selected from hydroxyl and a group of the formula: <IMAGE> (III) wherein n is a whole number integer of 0 to 6; X is selected from the group consisting of hydroxyl and amino when n is from 1 to 6; and when n is 0, X is selected from monovalent groups of the formula: -0-alkylene-NR3R4(IV) wherein n has the meaning previously ascribed to it; R3 is selected from the group consisting of hydrogen and R4; and R4 represents a monovalent group of the formula -Alkylene-OH;(V) provided that R1 and R2 are not both a carboxyl group; and R1 and R2 when taken together represent the divalent moiety of formula: <IMAGE> (VI) wherein A represents one of oxygen and <IMAGE> (VII) wherein n has the meaning previously ascribed to it; and applied to oxidation prone metals to inhibit corrosion.
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