Patent ID: 8058462
Filing Date: 2011-11-15
Classification: A61P,C07F,C07G

Abstract:
1. A process for producing a solid ligand-modified poly oxo-hydroxy metal ion material (M x L y (OH) n ), wherein M represents at least one metal ion, L represents at least one ligand and OH represents oxo or hydroxy groups, wherein the material has a polymeric structure and wherein the gross solid ligand-modified poly oxo-hydroxy metal ion material has one or more reproducible physico-chemical properties and displays M-L bonding for at least one ligand that can be detected by physical analytical techniques, the process comprising: (a) mixing the metal ion(s) and the ligand(s) L at a first pH(A) at which the components are soluble; (b) changing the pH(A) to a second pH(B) to cause a solid precipitate of the solid ligand-modified poly oxo-hydroxy metal ion material to be formed; and (c) separating, and optionally drying, the solid ligand-modified poly oxo-hydroxy metal ion material produced in step (b).