Benzoxazoles having the structure ##STR1## where R is hydrogen or an alkyl group having from 1 to 20 carbon atoms, R' is hydrogen, chlorine or an alkyl group containing from 1 to 20 carbon atoms, X is H or Chlorine and the total number of carbon atoms in R and R' is 6 to 40 with the proviso that one of R and R' must be an alkyl group of at least 6 carbon atoms. The benzoxazoles are useful in a process of recovering metal values, particularly copper and nickel, from aqueous solutions thereof.
苯并
噁唑具有结构##STR1##其中R是氢或含有1至20个碳原子的烷基基团,R'是氢、
氯或含有1至20个碳原子的烷基基团,X是H或
氯,且R和R'中碳原子的总数为6至40,其中R和R'中的一个必须是至少含有6个碳原子的烷基基团。这些苯并
噁唑在从其
水溶液中回收
金属价值,特别是
铜和
镍的过程中是有用的。