Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
David H. Blount1
Date of Patent
October 31, 2006
1Patent Application Number
106878991
Date Filed
October 17, 2003
1Patent Primary Examiner
Patent abstract
Flame retardant urethane compositions of this invention are produced by reacting a urea and/or urea condensate, a bio based compound and a polyisocyanate. The urea condensation compositions are produced by heating urea or heating urea to produce isocyanic acid and/or cyanic acid which reacts with urea to form urea condensates. The bio based compound are environmentally friendly, replaceable compound such as vegetable oils, molasses, sugar, lignin and hemi-cellulose. The urea and/or urea condensation compounds may be mixed with or reacted with carbonization auxiliaries. For example, polyurethane foams can be rendered less flammable with urea and/or urea condensation compounds and utilized as insulating and sound proofing materials.
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