PREPARATION METHOD OF STYRENE-BASED RESIN HAVING EXCELLENT PROCESSABILITY

摘要

PROBLEM TO BE SOLVED: To provide a preparation method of a styrene-based resin which contains reduced amounts of monomer and oligomers and which has excellent moldability and thermal stability and excellent secondary processability of printability. SOLUTION: In anion polymerization of a styrene-based monomer with an organic lithium initiator, the organic lithium initiator is contacted with the styrene-based monomer under specific conditions.