EPOXY NOVOLAC RESINS HAVING A NARROW MOLECULAR WEIGHT DISTRIBUTION AND PROCESS THEREFOR

摘要

ABSTRACTEpoxy novolac resins having a narrow molecularweight distribution are prepared by dissolving an epoxynovolac resin prepared by conventional means in a suitablesolvent such as xylene, cooling below 50°C until separationinto 2 phases occurs, separating the two phases and removingthe solvent therefrom thereby producing a resin of relativelylow molecular weight and a resin of relatively high molecularweight wherein each resin has a narrow molecular weightdistribution.