Chelating agents and chelates

Details Chelating agents and chelates Chelating agents and chelates

C - Chemistry, Metallurgy

07

F

260/426, 260/503

C07F 15/00 (2006.01)

Patent

CA 1087623

ABSTRACT OF THE DISCLOSURE A novel chelating agent having the formula Image in which (a) each of X1, X2, X3, and X4 is a member selected from the group consisting of (i) hydrogen; (ii) an alkyl group having -4 carbon atoms; (iii) -CN; (iv) -SO3M1; (V) -COOM1; (vi) -OM3; (vii) -NO2; and (viii) -OH; and (ix) Image in which each of R1 and R2 is an alkyl group having 1-4 carbon atoms; (b) each of M1, M2, M3, and M4 is a member selected from the group consisting of (i) a hydrogen ion; (ii) an alkali metal ion; (iii) 1/2 an alkaline earth metal ion; and (vi) an ammonium ion having the formula Image in which each of R3, R4, R5, and R6 is a member selected from the group consisting of (A) hydrogen; (B) an alkyl group having 1-4 carbon atoms; and (C) a hydroxy-alkyl group having 1-4 carbon atoms; and (C) Z is a member selected from the group consisting of (i) hydrogen; and (iii) hydroxyl.

259664

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