| abstract |
PURPOSE: To prepare the titled essentially amorphous copolymer having excellent heat resistance, by reacting alkali metal salts of a plural kinds of specific bisphenols with terephthaloyl chloride in the presence of a phase-transfer catalyst. n CONSTITUTION: The objective polymer composed of the recurring unit formula III and the recurring unit of formula IV wherein the molar ratio of the unit III to the sum of the unit III and unit IV is 0.05W0.95, is prepared by reacting (A) alkali methal salts of the bisphenol of formulaI(X is bivalent groupd such as CH 2 , CO, etc.) and the bisphenol of formula II (Y is vibalent group such as CH 2 , CO, etc.) with (B) terephtaloyl chloride in the presence of (C) a phase-transfer catalyst (e.g. N-laurylpyridinium chloride). n COPYRIGHT: (C)1982,JPO&Japio |