Process for Making a Polyisocyanurate Composite
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United States of America Patent
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Issued Date -
Jan 1, 2009
app pub date -
Jan 17, 2007
filing date -
Feb 21, 2006
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Abstract
Process for making a polyisocyanurate composite which process comprises combining a polyisocyanate, a polyether polyol and a trimerization catalyst with a to-be-bonded material to form a reactive composite, and allowing in a next step this reactive composite to react at elevated temperature, wherein the amount of the reactive binder composition is 1-60% by weight and the amount of the to-be-bonded material is 40-99% by weight, both calculated on the amount of the reactive binder composition plus the amount of the to-be-bonded material, wherein the amount of the polyisocyanate and the polyol is such that the index is 150-10000, characterized in that the polyol is a polyol having an average equivalent weight of 100-2500 and an oxyethylene content of at least 50% by weight.The reactive composite is claimed as well together with composites obtained from this process and from these reactive composites.
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