Polyetherimides. II. High‐temperature solution polymerization

Abstract

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.

Synthesis and properties of poly(ether imide)s based on the bis(ether anhydride)s from hydroquinone and its derivatives

“…[3][4][5][6][15][16][17] It is usually considered that p-phenylenedioxy units impart a certain linearity and often rigidity to polymer chains, thus leading to poor solubility of the poly(ether imide)s derived from the hydroquinone bis(ether anhydride). The present study deals with the synthesis and basic characterization of the poly(ether imide)s based on bis(ether anhydride)s derived from hydroquinone and its methyl, chloro, and phenyl derivatives.…”

Polymers, High-Temperature

“…The number-average molecular mass can be adjusted with monofunctional phthalic anhydride [5,6]. Commercial PEI grades are tuned to the specific needs of an application and are obtained in three ways: …”

Synthesis of a novel poly(aryl ether) with pendent N-phenylimide groups

“…3 Synthesis of 3,6-dibromopyromellitic dianhydride (3 a) [16][17][18] and 3,6-dichloropyromellitic dianhydride (3 b) [16][17][18] :…”