Oxidatively curable coating composition
AssigneeMilliken Industrials Limited
InventorsJohannes Wietse De Boer, Ronald Hage, Karin Maaijen, Yfranka Petronella Areke Roelofsen
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Abstract
The present invention relates to an oxidatively curable coating formulation comprising an oxidatively curable alkyd-based resin and unsymmetrically substituted 1,4,7-triazacyclononane-based chelant, which chelant may optionally be complexed with a suitable transition metal ion, particularly manganese. The formulations may be paints or other oxidatively curable coating compositions. The invention also provides methods for making such formulations and compositions resultant from the curing of such formulations.
Claims10
A formulation comprising:
- an oxidatively curable alkyd-based curable resin and a chelant of the formula (I):
- wherein:
- RB and RC are both methyl;
- RA is different to RB and RB is the same as RC;
- RA is benzyl or C4-12alkyl;
- and
- each of R1-R12 is the same and is hydrogen or C1-4alkyl, and
- a complex which comprises the chelant and a transition metal ion selected from ions of manganese, wherein a molar ratio between the transition metal ion and the chelant in the formulation is between about 0.3:1 to 3:1.
A method of preparing a formulation, the method comprising contacting a composition comprising an alkyd-based resin with a composition comprising a chelant of formula (I):
- wherein:
- RB and RC are both methyl;
- RA is different to RB and RB is the same as RC;
- RA is benzyl or C4-12alkyl;
- and
- each of R1-R12 is the same and is hydrogen or C1-4alkyl, and
- the method further comprising a step of contacting the composition comprising an alkyd-based resin with a source of manganese transition metal ion, wherein a molar ratio between the manganese transition metal ion and the chelant in the resultant formulation is between about 0.3:1 to 3:1.
Dependencies are inferred from the claim text.