ANHYDROUS, LIQUID PHASE PROCESS FOR PREPARING HYDROXYL CONTAINING POLYMERS OF ENHANCED PURITY

摘要

An anhydrous, liquid phase process for preparing hydroxyl containing polymers of enhanced purity comprising the steps of polymerization, purification, transesterification, purification, catalyst removal, and solvent exchange. The resultant polymer in solution can be used directly, without further processing steps, to prepare a photoresist composition.