chemical and process for chelatering (komplexbindning) of metal ions, which is at least divalent.conclusion in vatteninnehu00e5llande and / or water contained object and separation / recovery of the resulting chelate

摘要

The present invention relates to a chemical for chelation of metal ions, which are at least bivalent, contained in water and/or water enclosed objects and separation/recovering of formed chelate; the structural formula of which is formula (I) where R in at least one of the positions shown is comprised of a group in the form of a straight or branched hydrocarbon chain having from 9 to 20 carbon atoms, and where appropriate 1-2 hetero atoms, and which is missing in other position (s); and where X in shown positions is in a group in the form of —COOH or its sa and wherein the chemical can be a racemate, a mixture of enantiomers, or pure enantiomers or where R is missing in all four positions shown X in at least one position is —COOR, —CONHR or CH2OR or —COR or —CH2OCOR or —CH2OCONHR; and where X in the remaining positions shown is comprised of a group in the form of —COOH or its sa and wherein the chemical can be a racemate, a mixture of enantiomers, or pure enantiomers.