N-bis- or n-tris-[(1,2-dicarboxy-ethoxy)-ethyl]-amine...

Details N-bis- or n-tris-[(1,2-dicarboxy-ethoxy)-ethyl]-amine... N-bis- or n-tris-[(1,2-dicarboxy-ethoxy)-ethyl]-amine...

C - Chemistry, Metallurgy

07

C

C07C 217/08 (2006.01) A61L 2/18 (2006.01) C01B 15/037 (2006.01) C02F 5/12 (2006.01) C07C 229/24 (2006.01) C11D 3/33 (2006.01) D21C 9/10 (2006.01) D21C 9/16 (2006.01) G03C 5/00 (2006.01)

Patent

CA 2256559

The invention relates to N-bis- or N-tris-[(1,2-dicarboxy-ethoxy)-ethyl]-amine derivatives having formula (I) where R is H, (a) or (b) and R2 is hydrogen, an alkali metal or an earth-alkali metal. The invention also relates to a method for preparing the same and their use as chelating agents.

Cette invention concerne des dérivés de N-bis- ou de N-tris-[(1,2-dicarboxy-éthoxy)-éthyl]-amine correspondant à la formule (I) où R représente H, (a) ou (b), et R2 représente hydrogène, un métal alcalin ou un métal alcalino-terreux. Cette invention concerne également un procédé de préparation de ces dérivés, ainsi que leur utilisation en qualité d'agents de chélation.

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