Novel monochloro-s-triazine derivatives of the formula: ##STR1## wherein R.sub.1 and R.sub.2 are independently alkyl or substituted alkyl of 6 to 20 carbon atoms, alkenyl having 6 to 20 carbon atoms, cycloalkyl having 6 carbon atoms, or furfuryl, and which derivatives provide antioxidants and UV stabilizers for polymers such as polyolefins are prepared by reacting an alcohol with cyanuric chloride in the presence of an acid acceptor having a pK.sub.b .ltoreq.3, in an organic solvent which is inert to the reaction components.
新型单
氯-s-三嗪衍
生物的
化学式为:##STR1## 其中R.sub.1和R.sub.2分别为烷基或取代烷基,碳原子数为6至20,烯烃碳原子数为6至20,环烷基碳原子数为6,或者
呋喃基。这些衍
生物为聚烯烃等聚合物提供
抗氧化剂和紫外线稳定剂,是通过在有机溶剂中,在酸受体存在下,将醇与三聚
氰氯反应而制备出来的。该有机溶剂对反应组分是惰性的,而酸受体的pK.sub.b≤3。