| abstract |
PURPOSE: To obtain the subject composition excellent in storage stability and curing characteristics and useful as a matrix resin for a high-performance structural material by blending an epoxy resin, a diaminodiphenylsulfone, a dicyandiamide and boron trifluoride curing promoter in a specified ratio. n CONSTITUTION: An objective composition obtained by blending (A) 100 pts.wt. epoxy resin (preferably containing ≥30wt.% glycidylamine-type epoxy resin) with (B) 28-50 pts.wt., preferably 30-45 pts.wt. diaminodiphenylsulfone, (C) 2.0-5.0 pts.wt., preferably 2.5-4.5 pts.wt. dicyandiamide and (D) 0.1-0.3 pts.wt., preferably 0.1-0.2 pts.wt. boron trifluorine curing promoter (preferably monoethylamine complex). n COPYRIGHT: (C)1991,JPO&Japio |