| abstract |
A polyetherimide manufactured by reaction of an alkali metal salt of a dihydroxy aromatic compound of the formula MO-Z-OM wherein M is an alkali metal salt and Z is an aromatic C 6 - 24 monocyclic or polycyclic moiety optionally substituted with 1 to 6 C 1-8 alkyl groups, 1 to 8 halogen atoms, or a combination thereof, with a bis(halophthalimide) composition comprising, based on the weight of the bis(halophthalimide) composition, from more than 45 to less than 75 weight percent of a 3,3'-bis(halophthalimide) of the formula less than 10 weight percent of a 3,4'-bis(halophthalimide) of the formula and from more than 45 to less than 75 weight percent of a (4,4'-bis(halophthalimide) of the formula. |