SOLID REACTANT POLYURETHANE FOAM COMPOUND.
Rept. for 15 Apr 63-15 Apr 64,
MONSANTO RESEARCH CORP DAYTON OHIO
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Work was directed toward the development of a onepackage composition which, in space environment, on localized thermal initiation would self-propagate a reaction to give a rigid polyurethane foam. Calculations and calorimetric measurements showed the theoretical possibility of a self-propagating reaction from localized initiation. However, in practice, this goal was not attained. Improved formulations were developed based on tolidine diisocyanate and polyoxypropylene polyols. These compositions when thermally initiated under vacuum .00002 torr foam and cure to rigid foams. Initiation temperatures and heat input requirements are less than for previously developed formulations. One-package formulations thermally convertible at atmospheric pressure to polyurethane foams were also developed. Author