申请人:Lonza AG
公开号:US05698607A1
公开(公告)日:1997-12-16
Tertiary diamines having two saturated heterocyclic rings joined by an aliphatic carbon chain, of the general formula ##STR1## in which each A is a two- to four-membered aliphatic carbon chain substituted if desired by one or more C.sub.1 -C.sub.4 -alkyl groups, are prepared in one stage by catalytic hydrogenation of the corresponding dinitriles of the general formula N.tbd.C--A--C.tbd.N II The diamines preparable in accordance with the invention are particularly suitable as catalysts for the production of polyurethanes.
具有两个饱和杂环环由脂肪碳链连接的三元胺,其一般公式为##STR1##其中每个A是一个由一种或多种C.sub.1-C.sub.4-烷基基团取代的二至四个成员的脂肪碳链,可通过催化氢化相应的二腈一阶段制备,其一般公式为N.tbd.C--A--C.tbd.N II。根据本发明可制备的二胺特别适用于聚氨酯的生产催化剂。