abstract |
A drier for air-drying an auto-oxidizable resin composition, said drier comprising: 1,4,7-trialkyl-1,4,7-triazacyclononane (L); a manganese salt having the general formula Mn 2+ [X] n , wherein anion X is selected from PF 6 − , SbF 6 − , AsF 6 − , BF 4 − , B(C 6 F 5 ) 4 − , CI − , Br − , I − , NO 3 , or R 2 COO − in which case n=2, or the anion X is SO 4 2− in which case n=1, and wherein R 2 is C 1 -C 20 alkyl optionally substituted with heteroatoms, C 6 -C 20 ) aryl optionally substituted with heteroatoms, or a polymeric residue; wherein the 1,4,7-trialkyl-1,4,7-triazacyclononane (L) is present in the mixture in an amount such that the molar ratio of Mn:L is at least 1.25:1 and preferably at least 1.5:1. |