Sandia Corporation

Craig C Henderson

Leroy L Whinnery, Jr

Steven Howard Goods

Dawn M Skala

Patrick N Keifer

Paul A Cahill

Disclosed is a method for making a polyurethane closed-cell foam material exhibiting a bulk density below 4 lbs/ftand high strength. The present embodiment uses the reaction product of a modified MDI and a sucrose/glycerine based polyether polyol resin wherein a small measured quantity of the polyol resin is 'pre-reacted' with a larger quantity of the isocyanate in a defined ratio such that when the necessary remaining quantity of the polyol resin is added to the 'pre-reacted' resin together with a tertiary amine catalyst and water as a blowing agent, the polymerization proceeds slowly enough to provide a stable foam body.

Method for providing a low density high strength polyurethane foam

Di-addended and tetra-addended Buckminster fullerenes are synthesized through the use of novel organoborane intermediates. The C.sub.60, C.sub.70, or higher fullerene is reacted with a borane such as BH.sub.3 in a solvent such as toluene to form an organoborane intermediate. Reaction of the organoborane such as hydrolysis with water or alcohol results in the product di-addended and tetra-addended fullerene in up to 30% yields. Dihydrofullerenes and tetrahydrofullerenes are produced by the process of the invention.

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Falls Church, VA, United States of America

Craig C Henderson