| 摘要 |
BLENDS OF CARBONATE AND MONOVINYLIDENE AROMATIC COPOLYMERS CONTAINING SELECTED LOW MOLECULAR WEIGHT HALOGENATED EPOXY COMPOUNDS, IN COMBINATION WITH TETRAFLUOROETHYLENE POLYMERS, ARE SHOWN TO HAVE SURPRISING COMBINATIONS OF IMPACT AND IGNITION RESISTANCE AND BE VERY SUITABLE FOR ELECTROPLATING APPLICATIONS. IN GENERAL THE SELECTED EPOXY COMPOUNDS CAN BE REPRESENTED BY THE FOLLOWING FORMULA : WHERE, PREFERABLY, R IS HYDROGEN; X IS BROMINE; I IS 2; L IS 2,2-ISOPROPYL; N IS FROM 0 TO 1. POLYMER BLENDS BASED ON FROM 65 TO 98 WEIGHT PERCENT CARBONATE POLYMER, FROM 2 TO 25 PERCENT BY WEIGHT MONOVINYLIDENE AROMATIC COPOLYMER, PREFERABLY RUBBER MODIFIED, AND FROM 0 TO 10 PERCENT BY WEIGHT OF A RUBBERY CORE/SHELL GRAFT COPOLYMER IMPACT MODIFIER ARE SUITBALE FOR PREPARATION OF THESE COMPOSITIONS. IT HAS BEEN FOUND DESIREBLE TO EMPLOY FROM 1 TO 20 PERCENT BY WEIGHT LOW MOLECULAR WEIGHT HALOGENATED EPOXY COMPOUND, AND FROM 0.01 TO 2 PERCENT BY WEIGHT OF A TETRAFFLUOROETHYLENE POLYMER. |
