Permanently antistatic shaped structures of acrylonitrile polymers

A shaped article of an acrylonitrile polymer with at least one antistatic additive, comprising (A) 85 to 99.5 % by weight of an acrylonitrile copolymer consisting of at least 60 % by weight of copolymerised acrylonitrile and (B) of 0.5 to 15 % by weight of at least one compound corresponding to the general formula (I) ##EQU9## in which R represents a C.sub.8 -C.sub.18 -alkyl, cycloalkyl, aryl, aralkyl or alkaryl radical optionally substituted by halogen or alkyl,

• a is an integer from 5 to 50,
• R' represents ann alkylene, arylene, aralkylene, alkarylene, cycloalkylene radical,
• R" represents hydrogen or a methyl group,
• B represents hydrogen or the group ##EQU10## R'" , where B is hydrogen, represents a C.sub.6 -C.sub.12 -arylene radical optionally substituted by halogen or alkyl, a C.sub.3 -C.sub.17 -alkylene radical or a cycloaliphatic radical, and, where B has the meaning different from hydrogen, R'" represents a C.sub.2 -C.sub.6 -alkylene radical, a C.sub.6 -C.sub.12 -arylene radical optionally substituted by halogen or alkyl or a cycloaliphatic radical.