Akzo Nobel Coatings International B.v.

Eddy Van Weelde

Michel Daniel Meijer

Joseph Theodorus Maria Van Dijk

Jitte Flapper

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[X], wherein anion X is selected from PF, SbF, AsF, BF, B(CF), Cl, Br, I, NO, or RCOOin which case n=2, or the anion X is SOin which case n=1, and wherein Ris C-Calkyl optionally substituted with heteroatoms, C-C) 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.

Drier for auto-oxidisable coating compositions

A mixture for use as a drier for air-drying an auto-oxidizable resin composition, said mixture comprising : 1,4,7-trialkyl-1,4,7-triazacyclononane (L); and, a manganese salt having the general formula Mn[X], wherein anion X is selected from PF, AsF, BF, B(CF), CI, Br, I, NO, or RCOOin which case n=2, or the anion X is SOin which case n=1, and wherein Ris C-Calkyl optionally substituted with heteroatoms, C-Caryl 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 L:Mn is at least 1.25:1 and more preferably at least 1.5:1.

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Nieuw-Lekkerland, Netherlands

Eddy Van Weelde