PROCESS FOR PRODUCING HIGH IMPACT STYRENE RESIN BY CONTINUOUS BULK POLYMERIZATION

摘要

7566-1045 Disclosed is a process for producing a high impact styrene resin by continuous bulk polymerization and a high impact styrene resin produced by the process. The resin is produced in the presence of a rubbery polymer in a tubular reactor having static mixing means such as a static mixer without using a stirred tank reactor. A part of an initial-stage polymer solution is recycled and joined with a feed material solution. The rubbery polymer and the recycled initial-stage polymer solution are easily divided into fine particles uniformly dispersed. As a result, the grafting ratio is increased and a high impact styrene resin having excellent strength is obtained in which the grafted rubbery polymer is contained with a narrow particle size distribution.