申请人:Rohm and Haas Company
公开号:US04886618A1
公开(公告)日:1989-12-12
Oxygen scavengers, especially for vinyl polymerizations, comprising an aldehyde or imine of the formula R.sub.3 Q.sub.n wherein n is 1-4; R.sub.3 is an organic radical having a valence of 1-4 or hydrogen; Q is of the formula ##STR1## wherein A is 0 or NR.sub.4 ; R.sub.2, R.sub.2, and R.sub.4 are independently selected C.sub.1-6 alkyl or aryl radicals or mixtures thereof are disclosed. A preferred composition is a mixture of aldehydes which are the reaction product of (a) ethylene urea, (b) formaldehyde, (c) isobutyraldehyde, and (d) 2-ethylhexanal in a molar ratio of (a):(b) of 1:2 and of (a) to the sum of (c) and (d) of 1:2.
含有醛或亚胺的氧气清除剂,特别用于乙烯聚合,其化学式为R.sub.3 Q.sub.n,其中n为1-4;R.sub.3是具有1-4价的有机基团或氢;Q的化学式为##STR1## 其中A为0或NR.sub.4;R.sub.2,R.sub.2和R.sub.4是独立选择的C.sub.1-6烷基或芳基基团或其混合物。一种优选的组合物是醛的混合物,其为(a)乙烯脲,(b)甲醛,(c)异丁醛和(d)2-乙基己醛的反应产物,其摩尔比为(a):(b)=1:2,(a)与(c)和(d)的和的比为1:2。