公开(公告)号：EP1366015A4

公开(公告)日：2008-03-26

申请号：EP02703395

申请日：2002-03-01

Applicant: TECH RESOURCES PTY LTD

Inventor： SOLOMON DAVID H ,  CAULFIELD MARCUS J ,  RUSSO TIZIANA ,  SHAW RAY ,  MCALLISTER DUNCAN J

IPC: B01J39/18 ,  B01J45/00 ,  C02F1/42 ,  C02F1/68 ,  C07C215/50 ,  C07C217/58 ,  C07D295/096 ,  C08G73/06 ,  C02F1/58 ,  C02F1/60 ,  C07F5/06 ,  C07F7/02

CPC classification number: C07D295/096 ,  B01J39/18 ,  B01J45/00 ,  C02F1/42 ,  C02F1/683 ,  C02F2101/006 ,  C02F2101/20 ,  C07C215/50 ,  C07C217/58 ,  C08G73/0627 ,  C08G73/0633 ,  C08G73/0638

Abstract: A complexing ligand for forming a complex with a cation, the ligand comprising an aromatic component including two or more attachment sites for the cation, an optionally substituted amine, such as an aminoalkylene group, and a hydrocarbon chain of from 1 to 12 carbon atoms in length. The amine component of the ligand is capable of taking on an internal counterion (H+) so that the complex of the target cation and ligand has an overall neutral charge. Such ligands can be used to extract a target cation or cations from an aqueous solution. This has particular application for the separation of aluminium and silicon in aqueous liqors in a Bayer process. The ligand can be a simple compound formed by the Mannich condensation of catechol with formaldehyde and an amine. The ligand may alternatively be a bis-ligand, a polymer or an ion exchange resin. A range of new compounds and intermediates are also described.

公开(公告)号：CA2439634A1

公开(公告)日：2002-09-12

申请号：CA2439634

申请日：2002-03-01

Applicant: TECH RESOURCES PTY LTD

Inventor： SHAW RAY ,  CAULFIELD MARCUS J ,  SOLOMON DAVID H ,  MCALLISTER DUNCAN J ,  RUSSO TIZIANA

IPC: B01J39/18 ,  B01J45/00 ,  C02F1/42 ,  C02F1/68 ,  C07C215/50 ,  C07C217/58 ,  C07D295/096 ,  C08G73/06 ,  C07F7/02 ,  C07F5/06 ,  C02F1/58 ,  C02F1/60

Abstract: A complexing ligand for forming a complex with a cation, the ligand comprisi ng an aromatic component including two or more attachment sites for the cation, an optionally substituted amine, such as an aminoalkylene group, and a hydrocarbon chain of from 1 to 12 carbon atoms in length. The amine componen t of the ligand is capable of taking on an internal counterion (H+) so that th e complex of the target cation and ligand has an overall neutral charge. Such ligands can be used to extract a target cation or cations from an aqueous solution. This has particular application for the separation of aluminium an d silicon in aqueous liqors in a Bayer process. The ligand can be a simple compound formed by the Mannich condensation of catechol with formaldehyde an d an amine. The ligand may alternatively be a bis-ligand, a polymer or an ion exchange resin. A range of new compounds and intermediates are also describe d.