US Patent 8003708 Process for making rigid polyurethane foams
Patent 8003708 was granted and assigned to Huntsman on August, 2011 by the United States Patent and Trademark Office.
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Patent abstract
Process for making rigid polyurethane or urethane-modified polyisocyanurate foams at an isocyanate index of between 110 and 120 comprising the step of reacting an organic polyisocyanate composition with an isocyanate-reactive composition in the presence of a hydrocarbon as blowing agent wherein the isocyanate-reactive composition contains between 3 and 30 wt % of polyester polyols and between 20 and 50 wt % of polyether polyols derived from aromatic amines, the amounts being calculated on the basis of total isocyanate-reactive compound.
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Patent Inventor Names
Cristina Javarone0
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US Patent 08003708 Process for making rigid polyurethane foams US Patent 8003708 Process for making rigid polyurethane foams
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Patent Number
08003708
Patent Number
8003708
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US Patent 08003708 Process for making rigid polyurethane foams
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Is a
Current assignee
Patent jurisdiction
Patent number
08003708
Date of patent
August 23, 2011
Patent application number
11517103
Date Filed
September 7, 2006
Patent primary examiner
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