Patent ID: 8586696

Claim:
A catalyst compound of formula Zr(L)(A 1 )(A 2 )(A 3 ) or of formula Zr(L)(A)(polyol) for the production of polyurethane, wherein L represents a ketoamide ligand, A, A 1 , A 2 and A 3 may be the same or different and each represents a ligand derived from a compound selected from the group consisting of an alcohol, a polyol, an alkyl acetoacetate, a diketone, a ketoamide, a carboxylic acid or ester thereof, an alkanolamine, a phosphoric acid ester and a sulphonic acid or ester thereof; provided that at least one of A, A 1 , A 2 and A 3 represents a ligand derived from a ketoamide and further provided that either: (i) none of A 1 , A 2 and A 3 represents a ligand —OR where R is alkyl or a hydroxy-alkyl, hydroxyalkoxyalkyl, or (hydroxy)polyoxyalkyl group, or (ii) at least two of A 1 , A 2 and A 3 represent a ligand —OR where R is alkyl or a hydroxy-alkyl, hydroxyalkoxyalkyl, or (hydroxy)polyoxyalkyl group, and wherein the catalyst does not consist of Zr(DEAA) 2 (isopropoxide) 2 where DEAA represents a ligand derived from N,N-diethylacetoacetamide, wherein the catalyst does not comprise a compound of bismuth as a co-catalyst, and wherein the polyurethane has a Shore A hardness greater than 60 after 20 minutes of curing.