Synthesis and Properties of Fluorine-containing Poly(ether)s with Pendant Hydroxyl Groups by the Polyaddition of Bis(oxetane)s and Bisphenol AF

Abstract

Fluorine-containing poly(ether)s with pendant primary hydroxyl groups were synthesized by the polyaddition of bisphenol AF di(3-ethyl-3-oxetanylmethyl ether) (BPAFEO) with bisphenol AF (BPAF) using quaternary onium salts, crown ether complexes or organic bases as catalysts. When the polyaddition was performed with co-catalysts such as tetraphenylphosphonium chloride (TPPC) and 1,8-diazabicyclo[5.4.0]undecene-7 (DBU) without solvent at 190 °C for 120 h, the corresponding poly(ether)s pendant primary hydroxyl groups were successfully obtained in good yield. The polyaddition of various bis(oxetane)s with BPAF also proceeded in bulk to provide the corresponding poly(ether)s. It was found that these poly(ether)s are highly transparent at 157 nm, and transmittance of poly(ether)s were determined to be 34–55 % at 157 nm for 0.1 μm thickness.