Poly(etherimides) and compositions containing the same

Claim 1

A polyetherimide of the formula [A].sub.m [B].sub.1-m where m is a number greater than 0 and smaller than 1, where A units are of the formula: ##STR30## where --O--Z--O-- is in the 3 or 3'- and 4 or 4'- positions and Z is a member of the class consisting of (1) ##STR31## and (2) divalent organic radicals of the general formula: ##STR32## where X is a member selected from the class consisting of divalent radicals of the formulas, C y H 2y , ##STR33## --O-- and --S--, where q is 0 or 1, y is a whole number from 1 to 5, R is a divalent organic radical selected from the class consisting of (a) aromatic hydrocarbon radicals having from 6-20 carbon atoms and halogenated derivatives thereof, (b) alkylene radicals and cycloalkylene radicals having from 2-20 carbon atoms, C.sub.(2-8) alkylene terminated polydiorganosiloxane, and (c) divalent radicals included by the formula ##STR34## where Q is a member selected from the class consisting of --O--, ##STR35## --S--, and --C x H 2x --, and x is a whole number from 1 to 5 inclusive, and where the B units are of the formula: ##STR36## where R is a divalent organic radical as previously defined, and independently a and b represent a whole number in excess of 1.