Patent ID: 6908875

Claim:
An organometallic composition, suitable for use in curing polyisocyanate compositions, comprising: a) a complex of at least one metal selected from the group consisting of iron, aluminium and cobalt; b) a β-discarbonyl compound selected from benzoyl acetone, dibenzoylmethane, 2,2,6,6-tetramethylheptanedione, 1,1,1-trifluoro-2,4-pentanedione, or a β-ketoester; and c) optionally, a second β-dicarbonyl compound; wherein, when the metal is iron (II) or cobalt (II), the molar ratio of total β-dicarbonyl compound to metal is in the range from 2.1:1 to 10:1, and when the metal is aluminium (III) iron (III) or cobalt (III), the molar ratio of total β-dicarbonyl compound to metal is in the range from 3.1:1 to 10:1.