PHOSPHORUS-CONTAINING PHENOL NOVOLAK RESIN, A HARDENER WITHOUT A HALOGEN MATERIAL, AND AN EPOXY RESIN COMPOSITION WITH THE IMPROVED FIRE RETARDANT PROPERTY

摘要

PURPOSE: A phosphorus-containing phenol novolak resin, a hardener, and an epoxy resin composition are provided to increase the phosphorus content of the epoxy resin composition by using the phosphorus-containing phenol novolak resin as a hardener.;CONSTITUTION: A phosphorus-containing phenol novolak resin includes a recurring unit, and has the weight average molecular weight of 400~4,000, the softening point of 50~200 deg C, and the phosphorus content of more than 1wt%. The phosphorus-containing phenol novolak resin is soluble to 2-methoxyethanol, 1-methoxy-2-propanol, and dimethylformamide. An epoxy hardener includes the phosphorus-containing phenol novolak resin. An epoxy resin composition includes the epoxy hardener and an epoxy resin.;COPYRIGHT KIPO 2011