Exploratory Development of Polyureylene/Acylsemicarbazide Resins.
Final rept. Jul 73-Feb 74,
STRUCTURAL COMPOSITES INDUSTRIES INC AZUSA CALIF
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The reaction between hydrazine and trimesoyl hydrazine TMH with diisocyanate-capped polyether to form polyureyleneacylesimcarbazide resin was studied. The products of these reactions, particularly that involving the crosslinking potential of the tri-functional TMH, appeared to have significant theoretical potential for low flow laminating resins. Reactions with hydrazine were all spontaneous leading to a variety of elastomeric materials which exhibited no tendency for crosslinking. It was not possible to obtain reaction with TMH and no rigid materials were observed. It appeared that very low solubility and possibly the low reactivity of the isocyanate materials may have been the primary causes of the problem. Modified author abstract
- Organic Chemistry