申请人:ENIRICERCHE S.p.A.
公开号:EP0334424A1
公开(公告)日:1989-09-27
Stabilizer compounds for organic polymers, containing a sterically hindered amino group are definable by means of the general formula (I):
where:
R¹ is the hydrogen atom, or an alkyl or a benzyl group; and
R is a primary, secondary or tertiary alkyl group containing at least 12 carbon atoms.
These compounds can be obtained by means of the reaction of an alkaly or alkaly-earth metal with a primary, secondary or tertiary alkyl halide containing at least 12 carbon atoms, in order to yield the corresponding metallorganic derivative and subsequently reacting this latter with 2,2,6,6-tetramethyl-piperidone, or with an N-substituted derivative thereof.
The so obtained compounds are endowed with an activity of stabilization against the degradating action performed by light on the organic polymers, in particular on polyolefins.
根据通式 (I),可以定义含有立体受阻氨基的有机聚合物稳定剂化合物:
其中
R¹ 是氢原子、烷基或苄基;以及
R 是含有至少 12 个碳原子的伯、仲或叔烷基。
这些化合物可以通过碱金属或碱土金属与至少含有 12 个碳原子的伯、仲或叔烷基卤化物反应得到相应的金属有机衍生物,然后再将后者与 2,2,6,6-四甲基哌啶酮或其 N-取代衍生物反应得到。
这样得到的化合物具有稳定作用,可以防止光对有机聚合物,特别是聚烯烃的降解作用。