Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
Cristina Javarone0
Date of Patent
August 23, 2011
Patent Application Number
11517103
Date Filed
September 7, 2006
Patent Primary Examiner
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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