Hydrocarbylsulfonyl carbohydrazides of the following structural formulae are disclosed for use as blowing agents: ##STR1## The compounds wherein the R groups are alkyl are novel, as are the polymeric products.
以下结构式的烃基磺酰基碳酰
肼被披露用作发泡剂:##STR1##其中R基为烷基的化合物是新颖的,聚合产物也是新颖的。