The invention relates to a process for the purification of brominated styrenic homo-polymers and co-polymers. The purification process reduces or removes contained aliphatic bromine, and free bromine resulting from the reaction of the brominated reagent with the polystyrene backbone. In addition, the method optionally removes occluded inorganic halide impurities from the polymer. These impurities are considered undesirable due to their adverse effects on thermal aging and stability of the final end use resin formulations.
申请公布号
WO9113915(A1)
申请公布日期
1991.09.19
申请号
WO1991US01648
申请日期
1991.03.12
申请人
GREAT LAKES CHEMICAL CORPORATION
发明人
FAVSTRITSKY, NICOLAI, A.;FIELDING, WILLIAM, R.;SANDS, JOHN, L.;STAHL, ROBERT, J.