CONTINUOUS PROCESS FOR THE PREPARATION OF ABS POLYBLENDS

摘要

APPLICATION FOR LETTERS PATENT FOR A CONTINUOUS PROCESS FOR THE PREPARATION OF ABS TYPE POLYBLENDS This invention relates to a continuous process for the production of ABS type polyblends comprising the polymerization of a monomer composition comprising monoalkenyl aromatic and alkenyl nitrile monomers in a single reaction zone forming a matrix copolymer dissolved in said monomers as a liquid phase; removing said liquid phase from said reaction zone and dispersing a first and second grafted diene rubber in said liquid phase followed by separating said matrix copolymer and said grafted diene rubbers from said liquid phase forming an ABS polyblend having a bimodal rubber particle size distribution and a matrix copolymer having a uniform monomer composition and molecular weight.