Zirconium compound, catalyst and its use for polyurethane manufacture
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United States of America Patent
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Nov 19, 2013
Grant Date -
Dec 18, 2008
app pub date -
Jul 4, 2006
filing date -
Jul 4, 2005
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Abstract
The invention comprises a catalyst compound of formula Zr(L)(A1)(A2)(A3) where L represents a ketoamide ligand, A1, A2 & A3 may be the same or different and each represent 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. The compound may be made by the reaction of a zirconium alkoxide or haloalkoxide with a ketoamide. The compound is useful as a catalyst for the reaction of a polyisocyanate with a hydroxyl-containing compound, e.g. for the manufacture of polyurethanes or composite cellulosic materials such as fibre-boards.
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