Drier for auto-oxidisable coating compositions
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United States of America Patent
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Mar 7, 2017
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Nov 27, 2014
app pub date -
Dec 17, 2012
filing date -
Dec 20, 2011
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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 Mn2+[X]n, wherein anion X is selected from PF6−, SbF6−, AsF6−, BF4−, B(C6F5)4−, Cl−, Br−, I−, NO3, or R2COO− in which case n=2, or the anion X is SO42− in which case n=1, and wherein R2 is C1-C20 alkyl optionally substituted with heteroatoms, C6-C20) 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.
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