Organometallic compositions and polyisocyanate compositions containing them
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United States of America Patent
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Jun 21, 2005
Grant Date -
Dec 12, 2002
app pub date -
Feb 1, 2002
filing date -
Aug 3, 1999
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Abstract
An organometallic composition, suitable for use in curing polyisocyanate compositions, includes a complex of at least one metal selected from iron, cobalt and aluminum and at least one β-dicarbonyl compound wherein when the metal is iron (II) or cobalt (II) the molar ratio of β-dicarbonyl compound to metal is in the range from 2.1:1 to 10:1, and when the metal is aluminum (III), iron (III) or cobalt (III) the molar ratio of β-dicarbonyl compound to metal is in the range from 3.1:1 to 10:1. A polyisocyanate composition containing the organometallic composition and a process for binding lignocellulosic material is also described.
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