Curable composition containing 1,4-diaminobutane derivatives

Details Curable composition containing 1,4-diaminobutane derivatives Curable composition containing 1,4-diaminobutane derivatives

1978-10-11

1980-01-08

Nielsen, Earl A.

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

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

2605705P, 528124, 528341, 528407, 525507, C08G 5950

Patent

active

041828321

ABSTRACT:
1,4-Diaminobutanes of the formula ##STR1## in which R.sup.1 is H or --CH.sub.3 and R.sup.2 and R.sup.3 independently of one another are each a radical of the formula ##STR2## in which A is alkyl having 1 to 3 C atoms, --OCH.sub.3, --N(CH.sub.3).sub.2, --Cl or --Br and R.sup.2 also is alkyl having 1 to 3 C atoms, are prepared according to the invention by catalytically hydrogenating succinic acid dinitrile of the formula ##STR3## in the presence of acetic anhydride and hydrolyzing the N,N'-diacetyl-1,4-diaminobutanes thus obtained to diamines of the formula I, which are valuable curing agents for epoxide resins.

REFERENCES:
patent: 2951824 (1960-09-01), Bruin et al.
patent: 3763102 (1973-10-01), Hoffmann et al.

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