Patent ID: 6437043
Filing Date: 2002-08-20
Classification: C08F

Abstract:
A process for forming an impact-resistant rubber-modified monovinylaromatic compound comprising the steps of:a. flowing a stream of reactive elastomer monomer through a first reactor assembly; b. adding a stream of diluent containing monovinylaromatic monomer to said elastomer monomer stream during said flowing step; c. adding a polymerization initiator to said combined streams of monomers, said initiator consisting of an elastomer polymerization initiator, during said flowing step; d. subjecting said combined streams of monomers to flow shear in said reactor assembly until a significant portion of said elastomer monomer has polymerized into elastomer polymer; e. adding a neutralizer compound to said combined monomer stream to,stop polymerization of said elastomer; f. flowing said combined monomer stream into a solvent exchange assembly to remove diluent by exchange with styrene monomer; and, g. flowing said combined monomer stream into a second reactor assembly and adding monovinylaromatic monomer to said stream to react therewith and form a transparent elastomer-modified polymer.