Title: Curable composition containing 1,4-diaminobutane derivatives

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.

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Inventors: Zondler, Helmut (Bottmingen, CH)
Moser, Roland (Basel, CH)
Audykowski, Thaddeus (Basel, CH)

Application Number: 950339
Filing Date: 1978-10-11
Publication_date: 1980-01-08
Assignee: Ciba-Geigy Corporation (Ardsley, NY)
Primary Class(es): 528/103 525/507, 528/124, 528/341, 528/407, 564/155, 564/157, 564/158, 564/372
Other Classes:
US Patent Ref:

2951824	Sep, 1960	Bruin et al.	260/47.
3763102	Oct, 1973	Hoffmann et al.	260/47.

Other Refs:
Primary Examiner: Nielsen, Earl A.
Assistant Examiner:
Attorney: DiPrima; Joseph F.