Novel compounds of the formula ##STR1## wherein --D-- is a methylene group which is a member of an oxetane or a 1,3-dioxane ring, --R-- is ethylene or propylene bearing from 0-6 methyl groups and m and n are lower integers. For example, a compound of the formula ##STR2## is contacted with dilute HCl to give a monomer ##STR3## which is copolymerized with a diisocyanate to give a copolymer which removes SO.sub.2 from gas streams.
公式为 ##STR1## 的新化合物,其中--D--是属于氧杂
环丙烷或
1,3-二噁烷环的亚甲基基团,--R--是带有0-6个甲基基团的
乙烯或
丙烯基团,m和n为较小的整数。例如,将公式为 ##STR2## 的化合物与稀HCl接触,得到单体 ##STR3##,该单体与二
异氰酸酯共聚,得到一种共聚物,可以从气流中去除SO.sub.2。