The present invention relates to low odor α-cyano-dithiocarboxylic ester compounds of formula I for use as chain transfer agents in free radical polymerizations, and polymerization processes employing them:
wherein
R
1
is selected from alkyl, substituted alkyl, heteroaryl, substituted heteroaryl, alkylaryl, substituted alkylaryl, aryl, substituted aryl, alkoxy, aryloxy, thioalkyl, thioaryl, substituted thioalkyl, substituted thioaryl, secondary amino and tertiary amino;
R
2
is selected from alkyl, aryl, substituted aryl, heteroaryl, substituted heteroaryl, and COOR
3
; and
R
3
is alkyl.
本发明涉及一种低气味α-
氰基-二
硫代
羧酸酯化合物,其
化学式为I,用作自由基聚合中的链转移剂,以及使用它们的聚合过程:其中R1选择自烷基,取代烷基,杂环芳基,取代杂环芳基,烷基芳基,取代烷基芳基,芳基,取代芳基,烷氧基,芳氧基,
硫代烷基,
硫代芳基,取代
硫代烷基,取代
硫代芳基,次级
氨基和三级
氨基;R2选择自烷基,芳基,取代芳基,杂环芳基,取代杂环芳基和COOR3;R3为烷基。