| Abstract: Disclosed is a method for making a polyurethane closed-cell foam material
exhibiting a bulk density below 4 lbs/ft.sup.3 and 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. |
| Filed: 2/27/2007 |
| Application Number: 11/712283 |
Related Opportunity:
TufFoam
|
| This invention was made with Government support under Contract No. DE-NA0003525 awarded by the United States Department of Energy/National Nuclear Security Administration. The Government has certain rights in the invention. |
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