Monoformylated 3,3'-diaminodipropylamines, a process for their p

Details Monoformylated 3,3'-diaminodipropylamines, a process for their p Monoformylated 3,3'-diaminodipropylamines, a process for their p

1989-03-28

1990-05-08

Welsh, Maurice J.

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...

528 61, 564215, C08G 1838

Patent

active

049239520

ABSTRACT:
The present invention is directed to monoformylated 3,3'-diaminodipropylamine mixtures corresponding to formulae I and II ##STR1## The present invention is also directed to a process for the production of these mixtures by reacting acrylonitrile and formamide in the presence of a 4-aminopyridine derivative to form N,N-bis-(2-cyanoethyl)-formamide which is then hydrogenated to the monoformylated 3,3'-diaminopropylamine mixture corresponding to formulae I and II.
Finally, the present invention is also directed to the use of these mixtures as chain extending agents for the preparation of polyurethanes by the polyisocyanate polyaddition process.

REFERENCES:
patent: 4238409 (1980-12-01), Rigdon et al.
patent: 4348536 (1982-09-01), Blahak et al.
patent: 4701546 (1987-10-01), Bewert et al.

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