Polyurethanes and polyurethane-ureas based on aromatic uret dion

Details Polyurethanes and polyurethane-ureas based on aromatic uret dion Polyurethanes and polyurethane-ureas based on aromatic uret dion

1983-08-25

1985-05-28

Cockeram, Herbert 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...

260239A, 252182, 528 62, 528 68, C08G 1832, C08G 1877, C07D 100

Patent

active

045201862

ABSTRACT:
Aromatic uret dione diurea diamines corresponding to the formula ##STR1## in which X, Y, m and n are as defined herein are produced by reacting an aromatic diamine with a diisocyanate corresponding to a specified formula in a molar ratio of diamine to diisocyanate of at least 1.8 to 1. These diamines are particularly useful in the production of elastomers.

REFERENCES:
patent: 2643250 (1953-06-01), Stallmann et al.
patent: 3475200 (1969-10-01), Kallert et al.
patent: 3793238 (1974-02-01), Winkelmann et al.
patent: 3998794 (1976-12-01), Muller et al.
patent: 4176118 (1979-11-01), Petinaux et al.
patent: 4251427 (1981-02-01), Recker et al.
patent: 4405752 (1983-09-01), Recker et al.
Saunders et al., J.A.C.S., 75 (1953), p. 5439.
Singh et al., Can. J. Chem., 40 (1962), p. 935.

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