Process for Making a Polyisocyanurate Composite
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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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Citations
34 Claims
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1-12. -12. (canceled)
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13. A reactive composite comprising:
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a reactive binder composition comprising a polyisocyanate, a polyether polyol, and a trimerization catalyst, the amount of the polyisocyanate and the polyol is such that the index in the reactive binder composition is 150-10000, and the polyether polyol has an average equivalent weight of 100-2500 and an oxyethylene content of at least 50% by weight; and a to-be-bonded material, the to-be-bonded material and the reactive binder composition in respective amounts of 40-99% and 1-60% by weight, both calculated on the amount of the to-be-bonded material and the reactive binder composition. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 22)
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23. A process for making a polyisocyanurate composite comprising:
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combining, at an initial temperature, a reactive binder composition with a to-be-bonded material to form a reactive composite, said reactive binder composition including a polyisocyanate, a polyether polyol, and a trimerization catalyst;
the polyether polyol having an average equivalent weight of 100-2500 and an oxyethylene content of at least 50% by weight, the amount of the polyisocyanate and the polyether polyol is such that the index of the reactive binder composition is 150-10000, 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 and the amount of the to-be-bonded material; andallowing the reactive composite to react at an elevated temperature that is other than the initial temperature. - View Dependent Claims (21, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34)
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Specification