PHENOL NOVOLAC RESIN USED AS A RAW MATERIAL OF A THERMOSETTING RESIN, A PHENOL NOVOLAC EPOXY RESIN AND AN EPOXY RESIN COMPOSITION

摘要

PURPOSE: A phenol novolac resin is provided to replace a bisphenol A novolac resin and to prepare an epoxy resin composition when preparing a phenol novolac epoxy resin or a curing agent.;CONSTITUTION: A phenol novolac resin comprises a repeating unit represented by chemical formula 1 to a main chain and has a softening point of 50-150 °C. The average molecular weight of the phenol novolac resin is 500-5,000. The phenol novolac resin comprises a repeating unit represented by chemical formula 2 to a main chain and has epoxy equivalent of 150-400, softening point of 50-150 °C, and UV absorbance at 278 nm of 1.1 or more.;COPYRIGHT KIPO 2010