A composition for use as a drier in auto-oxidizable coatings or as an accelerator in unsaturated polyester resins comprises a manganese-bearing polymer having a manganese dicarboxylate repeating unit and at least one nitrogen-containing donor ligand. Such compositions offer excellent drying performances. They ensure a strongly reduced leachability of manganese compared to that of known manganese-bearing driers.

Disclosed is an oxidatively drying alkyd resin composition and a method for preparing said composition. Said composition is obtained by admixing an aqueous silica sol into a substantially 100% alkyd resin being in a liquid state either at ambient temperature or at an elevated temperature. Said silica sol is added in an amount of 0.1-10% by weight calculated as 100% silica on 100% alkyd resin. The use of a said composition is in a further aspect disclosed.

Disclosed is an oxidatively drying alkyd resin composition and a method for preparing said composition. Said composition is obtained by admixing an aqueous silica sol into a substantially 100% alkyd resin being in a liquid state either at ambient temperature or at an elevated temperature. Said silica sol is added in an amount of 0.1-10% by weight calculated as 100% silica on 100% alkyd resin. The use of a said composition is in a further aspect disclosed.

Disclosed is an oxidatively drying alkyd resin composition and a method for preparing said composition. Said composition is obtained by admixing an aqueous silica sol into a substantially 100% alkyd resin being in a liquid state either at ambient temperature or at an elevated temperature. Said silica sol is added in an amount of 0.1-10% by weight calculated as 100% silica on 100% alkyd resin. The use of a said composition is in a further aspect disclosed.

The invention pertains generally to paints containing a binder curable by an autoxidation mechanism and at least one drier comprising a sulfonate compound of vanadium of formula (VII)

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where R.sup.1 and R.sup.2 are independently selected from a group involving hydrogen, C.sub.1-C.sub.12 alkyl, C.sub.1-C.sub.12 halogenated alkyl, C.sub.6-C.sub.10 aryl, benzyl; and whereas aryl and benzyl can be optionally substituted by up to three substituents independently selected from a group involving C.sub.1-C.sub.20 alkyl, and hydroxy(C.sub.1-C.sub.2)alkyl.

Methods of coating a substrate are provided. In an exemplary embodiment, a coating composition is applied to the substrate with a high transfer efficiency applicator to produce a coating layer, where the high transfer efficiency applicator and the substrate remain spatially separate while the coating composition is applied. A droplet of the coating composition expelled from the high transfer efficiency applicator has a particle size of about 10 microns or greater. The coating composition has a viscosity of from about 1,000 to about 1,000,000 centipoise when the coating composition is subject to a shear rate of about 0.1 reciprocal seconds (s.sup.−1). However, the coating composition is non-Newtonian such that a coating composition viscosity decreases when the shear rate is increased to the coating composition. The coating layer is impinged with a gas such that a coating layer surface moves upon impingement with the gas.

Methods of coating a substrate are provided. In an exemplary embodiment, a coating composition is applied to the substrate with a high transfer efficiency applicator to produce a coating layer, where the high transfer efficiency applicator and the substrate remain spatially separate while the coating composition is applied. A droplet of the coating composition expelled from the high transfer efficiency applicator has a particle size of about 10 microns or greater. The coating composition has a viscosity of from about 1,000 to about 1,000,000 centipoise when the coating composition is subject to a shear rate of about 0.1 reciprocal seconds (s.sup.−1). However, the coating composition is non-Newtonian such that a coating composition viscosity decreases when the shear rate is increased to the coating composition. The coating layer is impinged with a gas such that a coating layer surface moves upon impingement with the gas.

A coating composition comprising an alkyd-comprising resin and a drier comprising a dinudear ligand-manganese complex comprising manganese and a 1,4,7-trisubstituted-1,4,7-triazacyclononane ligand, wherein the alkyd-comprising resin is an alkyd-stabilized non-aqueous dispersion of particles of addition polymer in a non-aqueous liquid phase comprising alkyd.

A coating composition comprising an alkyd-comprising resin and a drier comprising a dinudear ligand-manganese complex comprising manganese and a 1,4,7-trisubstituted-1,4,7-triazacyclononane ligand, wherein the alkyd-comprising resin is an alkyd-stabilized non-aqueous dispersion of particles of addition polymer in a non-aqueous liquid phase comprising alkyd.

A coating composition comprising an alkyd-comprising resin and a drier comprising a dinudear ligand-manganese complex comprising manganese and a 1,4,7-trisubstituted-1,4,7-triazacyclononane ligand, wherein the alkyd-comprising resin is an alkyd-stabilized non-aqueous dispersion of particles of addition polymer in a non-aqueous liquid phase comprising alkyd.