Novel polyetherimide-polyester blends

Claim 1

A polyetherimide-polyester blend comprising: (A) a PEI of the formula ##STR11## where a represents a whole number in excess of 1, --O-Z-O-- is in the 3 or 4-, and 3' or 4'- positions and Z is a member of the class consisting of (1) ##STR12## and (2) divalent organic radicals of the general formula ##STR13## where X is a member selected from the class consisting of divalent radicals of the formulas ##STR14## 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 ##STR15## where Q is a member selected from the class consisting of ##STR16## and x is a whole number from 1 to 5 inclusive, and (B) a PE of the formula ##STR17## where b represents a whole number in excess of 1, R' is a divalent alkylene radical containing from 1 to 10 carbon atoms, and the two carbonyl groups are located on the aromatic ring in a para- or meta- position relative to each other.