Aromatic diamino carbonic acid esters
Abstract
Abstract Novel aromatic diamines having the general formula WHEREIN N IS AN INTEGER OF FROM 2 TO 8, X is sulfur or oxygen, and R is an n-valent hydrocarbon radical which may be interrupted by O or S atoms and which is obtained by removing OH or SH groups from a polyol or polythiol having a molecular weight of less than 600, are prepared by reacting a compound having the formula (HX)nR where X, n and R are as defined above with about nequivalents of an isatoic acid anhydride in the presence of a strong base. The aromatic diamines of the invention are particularly useful as the active hydrogen containing component for reaction with polyisocyanates in the preparation of synthetic resins by the isocyanate-polyaddition process.
Inventors
- 👤 Johannes Blahak
- 👤 Erwin Muller
- 👤 Helmut Kleimann
Bibliographic Details
Claims Analysis
Total Claims: 7References Cited (Backward Citations)
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