Epoxy resin composition and molded articles obtained therefrom
申请人:HITACHI, LTD.
公开号:EP0103804A2
公开(公告)日:1984-03-28
An epoxy resin composition comprising (a) an epoxy resin, (b) an alkenylphenol polymer, (c) a curing promoter, (d) halogen compounds (compound) represented by the formula:
and/or the formula:
wherein X1 to X10 each represents a hydrogen, chlorine or bromine atom, at least three of X1 to X5 and at least three of X6 to X10 being chlorine or bromine atoms, and R represents an alkylene group or a hydroxyl-substituted alkylene group, and (e) a filler can give molded articles excellent in properties, particularly in heat resistance and flame retardancy, even if metal inserts are contained therein.
Fifty-four polychlorinated diphenyl ether (PCDEs) congeners were synthesized, and their structures were confirmed by mass spectrometry and proton magnetic resonance spectroscopy. The gas chromatographic relative retention times (RRT) for the PCDEs were determined relative to a reference standard, [C-13-3,3',4,4']-tetrachlorobiphenyl (PCB 77) on the fused silica capillary columns of SE-54 and OV-1701. The retention times for PCDEs increased with the increasing number of vicinal chlorines within a series of isomers. The chlorine substitution patterns of PCDEs were used to develop a method for predicting RRTs for congeners that were not synthesized.
Nevalainen Taplo, Koistinen Jaana, Nurmela Pirjo, Environ. Sci. and Technol., 28 (1994) N 7, S 1341-1347