Regularities of Single-Step Synthesis of Adamantane-Containing Polyimides in Sulfolane
摘要
Abstract
It has been shown that adamantane-containing diamines are highly reactive under conditions of single-stage high-temperature cyclization in a sulfolane–toluene mixture of solvents. Polyimides with the reduced viscosity of 1.3‒1.4 dL/g have been synthesized on their bases, the films of which have exhibited good thermal properties and low yellowness index (1.1‒1.2).