Preparation of polyurethane ureas using as hardeners mixtures of

Details Preparation of polyurethane ureas using as hardeners mixtures of Preparation of polyurethane ureas using as hardeners mixtures of

1977-08-05

1978-08-22

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...

260 328N, 428425, 528 64, C08G 1832, C08G 1814, C08K 541, C08K 507

Patent

active

041088425

ABSTRACT:
The present invention relates to a process for the production of polyurethane ureas from a prepolymer which contains isocyanate groups and a mixture of hardeners containing amino groups, in the presence of water, and optionally in the presence of solvents, characterized in that the mixture of hardeners comprises compounds corresponding to the following general formulae:

REFERENCES:
patent: 3493543 (1970-02-01), Nazy et al.
patent: 3554974 (1971-01-01), Mommaerts et al.
patent: 3567692 (1971-03-01), Haggis et al.
patent: 3699063 (1972-10-01), Scheibelhoffer
patent: 3784521 (1974-01-01), Finelli et al.
patent: 3793417 (1974-02-01), Erickson et al.
patent: 3932357 (1976-01-01), Schmitt et al.
patent: 3972846 (1976-08-01), Mori et al.
patent: 4009307 (1977-02-01), Erickson et al.

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