Aromatic diamines

Details Aromatic diamines Aromatic diamines

1975-10-06

1977-02-08

Gotts, Lewis

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C07C15307

Patent

active

040072398

ABSTRACT:
Novel aromatic diamines having the general formula ##STR1## 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).sub.n R where X, n and R are as defined above with about n-equivalents 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.

REFERENCES:
patent: 2259869 (1941-10-01), Allen
patent: 3402194 (1968-09-01), Schleppnik
Wagner et al; Syn. Org. Chem. (1953) ch. 14, pp. 482, 483.

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