Amide-containing diisocyanates and preparation thereof

Details Amide-containing diisocyanates and preparation thereof Amide-containing diisocyanates and preparation thereof

1978-12-11

1980-02-26

Torrence, Dolph H.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260453AR, 260453AL, 528 59, C07C11800, C07C119042, C07C119048

Patent

active

041905997

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: 3275618 (1966-09-01), Tiller et al.
patent: 3579482 (1971-05-01), Brotherton et al.
patent: 3943158 (1976-03-01), Dietrich et al.
patent: 3962301 (1976-06-01), Peterson et al.

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