Polyurethane forming compositions

Details Polyurethane forming compositions Polyurethane forming compositions

1978-12-11

1980-08-12

Cockeram, H. S.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From reactant having at least one -n=c=x group as well as...

2602393R, 260453AL, 260453AR, 260453P, 260553E, 528 44, 528 51, 528 54, 528 55, 528 56, 528 58, 528 59, 528 68, 528367, 528423, C08G 1880, C08G 1877, C07D24304, C07D24502

Patent

active

042174368

ABSTRACT:
Novel bis cyclic ureas are disclosed having the formula ##STR1## wherein C.sub.n H.sub.a 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: 2268586 (1942-01-01), Gilman
patent: 2801230 (1957-07-01), Fraser et al.
patent: 3528949 (1970-09-01), Rutledge
patent: 3530095 (1970-09-01), Ponet
patent: 3563957 (1971-02-01), Beebe
patent: 3943158 (1976-03-01), Dietrich et al.
patent: 4057535 (1977-11-01), Lipatova et al.

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