. . . . "The blends according to the invention contain as component B) polyether imides with recurring units of the formula: ##STR4## where R1 is selected from a substituted or unsubstituted aromatic radical of the formula ##STR5## or a divalent radical of the formula ##STR6## in which R3 is C1 -C6 -alkyl or halogen such as fluorine, chlorine or bromine, and R4 is a direct bond or a divalent --O--, --S--," . .