HYPERBRANCHED POLYARYLETHERKETONE, PREPARATION METHOD FOR SAME, APPLICATION THEREOF, AND SUBSTRATE OF THIN-FILM TRANSISTOR LIQUID CRYSTAL DISPLAY DEVICE

摘要

A hyperbranched polyaryletherketone, a preparation method for same, and an application thereof. The hyperbranched polyaryletherketone comprises a compound as represented by formula (I) and having a number average molecular mass between 27,500 and 45,000 and a molar mass distribution between 1.45 and 1.84, where R is either -OH or formula (II). The hyperbranched polyaryletherketone can be used in preparing a liquid crystal alignment film. The hyperbranched polyaryletherketone has a structure of increased similarity to liquid crystal molecules and provides an enhanced force between the liquid crystal molecules and the liquid crystal alignment film.