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US 12,545,805 B2Granted
Manganese-bearing polymer complexes
AssigneeUmicore AG & Co. KG
InventorCarl Vercaemst
Life of this patent
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Abstract
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.
Claims10
Composition for use as drier in auto-oxidizable coatings or as accelerator in unsaturated polyester resins, comprising:
- a manganese-bearing polymer having a repeating unit according to:
- wherein X is one or more groups from the list comprising a urethane and a polyurethane;
- wherein n≥2;
- and,
- at least one donor ligand from the list comprising bidentate, tridentate, pentadentate, and hexadentate nitrogen ligands comprising at least two chelating nitrogen atoms.
2 more elements
Dependencies are inferred from the claim text.