process for the preparation of copolymeres research base

摘要

the invention refers to a process for the preparation of copolymers of styrene based copolymers of acrylonitrile styrene through mixture and / or methyl methacrylate or by copolimerizareain the mass of styrene with acrylonitrile modified cucauciuc, at a temperature of 90..135 degree c in a reactor cascade of not completely filled, where n is 1 to 8, preferably 2.4 by a distance on parts of the polymerization reactors of i, in a cooling zone connected with each of these provided that when n is 1, m is zero,when n is 2, m is zero or 1, and when n is 3 8 m, to be 1 or 2, the ratio between the quantity of mass of distant and ability falls as 1 / 1 15 / 1. preferably 2 / 1.12 / 1,the cooling of this mass through evaporation of a part of the component with low boiling point with mass polymerization removed and cooled in the polymerisation reactor recirculation respectivelythe recirculation of reactorsi portion removed from being so obedient racirii contents in the polymer in the reaction to be 28..75%, pressure of evaporation to be 0065.0080 mpa, temperature at the exit of the evaporator to be 75..125 degree c.