Emulsion polymerization inhibitor and suspension polymerization method using the agent

摘要

A suspension polymerization of a polymerizable monomer in the presence of an emulsion polymerization inhibitor is disclosed. The inhibitor is an aromatic series compound having a NO2 group, a SO3Na group, and a secondary amino group, representatively, the following compound. In this suspension polymerization, the production of by-produced microfine particles caused by the emulsion polymerization as the secondary polymerization scheme is repressed. <IMAGE> (I) <IMAGE>