Bis-cyclic ureas

Details Bis-cyclic ureas Bis-cyclic ureas

1978-02-01

1979-02-06

Trousof, Natalie

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260453P, 260453AL, 260453AR, 528 45, 528 85, C07D24304, C07D24502

Patent

active

041383982

ABSTRACT:
Novel bis cyclic ureas are disclosed having the formula ##STR1## WHEREIN C.sub.n H.sub.2 n represents alkylene from 4 to 12 inclusive and provided there are at least 4 carbon atoms in succession in the chain and R is the residue obtained by the removal of both halogen atoms from a diacid halide.
The bis cyclic ureas are easily converted to a novel class of aliphatic diisocyanates simply by heating. Alternatively, they are blended with polymeric polyols to form one-component storage stable compositions which are thermally converted to polyurethane resins without any significant volatile or side product formation.

REFERENCES:
patent: 2682526 (1954-06-01), Flory
Wagner and Zook "Synthetic Organic Chemistry" p. 647 (1953) (Wiley).
Smith "Open Chain Nitrogen Compounds" pp. 272-273 (1965) (Benjamin).
Stevens "Polymer Chemistry an Introduction" p. 286 (1975) Addison-Wesley.

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