| 摘要 |
Polyetherimide ester compositions exhibiting improved hydrolytic stability are provided. These polymers are comprised of the reaction products of: (i) at least one diol; (ii) at least one dicarboxylic acid or an ester forming reactive derivative thereof; and (iii) a set of reactants selected from either (a) (i) an amount at least effective to improve the hydrolytic stability of said composition of at least one high molecular weight bisaminoalkyl polytetrahydrofuran, and (ii) at least one tricarboxylic acid or derivative thereof, or (b) an amount at least effective to improve the hydrolytic stability of said composition of at least one polyoxytetramethylene dialkylenediimide diacid, said polyoxytetramethylene dialkylenediimide diacid being the reaction product of (iii) (a) (i) and (iii) (a) (ii). The polymers of the instant invention are useful for production of extruded and molded parts requiring improved hydrolytic stability. |
