Synthesis and characterisation of 9,9-bis(4-hydroxyphenyl)-fluorene catalysed by cation exchanger

摘要

Purpose - The purpose of this paper is to synthesise high-purity 9,9-bis(4-hydroxyphenyl)-fluorene (BHPF). Design/methodology/approach - 9,9-bis(4-hydroxyphenyl)-fluorene was prepared from phenol and fluorenone using cationic ion-exchange resin as the condensation catalyst. The purity and chemical structure of the resulting 9,9-bis(4-hydroxyphenyl)-fluorene were characterised by elemental analysis, MS, HPLC, FTIR, ~1H NMR and ~(13)C NMR spectroscopy, etc. Findings - The purity and weight yield of 9,9-bis(4-hydroxyphenyl)-fluorene reached up to 99.1 and 81.3 per cent, respectively, under the optimal reaction condition, that is, the molar ratio of phenol to fluorenone was 8-1, the reaction temperature was 100°C, reaction time was 10h, the mass percentage of cation exchanger accounting for the total reactants was 15 per cent and the co-catalyst quantity was 0.2 ml. Originality/value - The method for preparation was novel and could find numerous applications as monomer or modifier for heat-resistant adhesives, high-temperature coatings and matrix resin for advanced composites, etc.