Arylsulphonyl hydrazones as blowing agents

摘要

The use of arylsulphonyl hydrazones corresponding to the following general formula: Ar (SO2-NH-N=R)x (I) wherein Ar represents a benzene, naphthalene, diphenyl, diphenyl ether, diphenyl sulphone or diphenylene oxide radical which may be substituted by methyl and/or chlorine; R represents the radical of an aldehyde or ketone without the carbonyl oxygen atom; and x represents 1 or 2; as blowing agents for the production of cellular or porous plastics articles.