Metal complex compounds as catalysts for polyurethane compositions
AssigneeSika Technology AG
InventorsUrs Burckhardt, Rita Cannas
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Abstract
The invention relates to metal complex compounds of the formula Mk(L)x(Y)kz-nx, where the ligand L has the formula (I), and to metal complex compounds which include the reaction product of at least one salt or a complex of a transition metal or a main group metal element of the groups 13 to 15 and at least one 1,3-ketoamide. Such complex compounds are suitable in particular as catalysts for polyurethane compositions. The invention also relates to two-component polyurethane compositions including at least one polyisocyanate as the first component, at least one polyol as the second component, and at least one such metal complex compound as the catalyst. The invention additionally relates to different uses of the two-component polyurethane compositions.
Claims16
A metal complex compound of formula Mk(L)x(Y)kz-nx, where:
- M stands for a z-valent metal cation chosen from metal cations and oxometal cations of transitional metals, zinc, or main metal group elements of periodic table groups 13 to 15,
- k stands for a whole number in a range of from 1 to 20,
- x stands for 1, 2, 3 or 4,
- z stands for 2, 3 or 4,
- n stands for 2 or 3,
- Y stands for a single negatively charged ligand,
- L stands for a ligand of formula (I), and
- kz-nx may be 0,
- where:
- each of R1 and R2 independently stands for a hydrogen residue, a monovalent saturated or unsaturated hydrocarbon residue with 1 to 10 carbon atoms, or together stand for a divalent alkylene residue with 3 to 6 carbon atoms,
- R3 stands for a hydrogen residue or a monovalent saturated hydrocarbon residue with 1 to 12 carbon atoms that optionally contains heteroatoms, and
- A stands for a polyoxyalkylene-containing residue with a mean molecular weight Mn of 200 to 5000 g/mol, optionally with one or two terminal 1,3-ketoamide groups of formula
A metal complex compound, obtained by reacting a 1,3-ketoamide with a metal salt or a metal complex chosen from a salt or a complex of a transitional metal, zinc, or an element of main metal group elements of periodic table groups 13 to 15;
- wherein the 1,3-ketoamide has a formula:
- where:
- each of R1 and R2 independently stands for a hydrogen residue, a monovalent saturated or unsaturated hydrocarbon residue with 1 to 10 carbon atoms, or together stand for a divalent alkylene residue with 3 to 6 carbon atoms,
- R3 stands for a hydrogen residue or a monovalent saturated hydrocarbon residue with 1 to 12 carbon atoms that optionally contains heteroatoms,
- A stands for a polyoxyalkylene-containing residue with a mean molecular weight Mn of 200 to 5000 g/mol, optionally with one or two terminal 1,3-ketoamide groups of formula
- and
- n stands for 2 or 3.
A metal complex compound of formula Mk(L)x(Y)kz-nx, where:
- M stands for a z-valent metal cation chosen from metal cations and oxometal cations of scandium, yttrium, lanthanum, titanium, zirconium, hafnium, vanadium, niobium, tantalum, chromium, molybdenum, tungsten, manganese, cobalt, nickel, copper, zinc, aluminum, gallium, indium, germainium, tin, lead, antimony, or bismuth,
- k stands for a whole number in a range of from 1 to 20,
- x stands for 1, 2, 3 or 4,
- z stands for 2, 3, or 4,
- n stands for 1, 2, or 3,
- Y stands for a single negatively charged ligand,
- L stands for a ligand of formula (I), and
- kz-nx may be 0,
- where:
- each of R1 and R2 independently stands for a hydrogen residue, a monovalent saturated or unsaturated hydrocarbon residue with 1 to 10 carbon atoms, or together stand for a divalent alkylene residue with 3 to 6 carbon atoms,
- R3 stands for a hydrogen residue or a monovalent saturated hydrocarbon residue with 1 to 12 carbon atoms that optionally contains heteroatoms, and
- A stands for a polyoxyalkylene-containing residue with a mean molecular weight Mn of 200 to 5000 g/mol, optionally with one or two terminal 1,3-ketoamide groups of formula
Dependencies are inferred from the claim text.