T. Takekoshi, J. E. Kochanowski, J. S. Manello, M. J. Webber
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Polyetherimides. II. High-temperature solution polymerization
The polymerization and characterization of the ether-containing aromatic polyimides of the following general structure are presented.
The polymerization was conducted in one step in homogeneous solution of m-cresol at high temperatures. Typical polyeterimides (PEI) were noncrystalline and showed excellent thermal stability. Among 46 polymers synthesized, only two were crystalline. PEI had glass transition temperatures from 178° to 277°C and exhibited excellent processibility. Many PEI were also soluble in dipolar aprotic solvents and chlorinated hydrocarbons.
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