Production null of melting processed possible acrylonitrile/methacrylonitrile

摘要

PURPOSE: To obtain the title polymer providing a film with good barrier properties by a method wherein acrylonitrile and methacrylonitrile are added into a reaction mixture so as to make the monomer ratio of unreacted acrylonitrile to unreacted methacrylonitrile in the reaction mixture constant. ;CONSTITUTION: An aimed polymer is obtd. by a method wherein while polymn. reaction of a mixture of 95-20% acrylonitrile and 5-80% methacrylonitrile proceeds until the polymn. of the mixture is finished to at least 60% in the presence of 0.1-10 (wt.)% emulsifier or dispersant, 0.01-5% mol.wt. controller and 0.01-5% initiator under stirring at 40-80°C (pref. 60°C), the above described monomers are added in a reaction container so as to make the monomer ratio of unreacted acrylonitrile to unreacted methacrylonitrile const. during reaction.;COPYRIGHT: (C)1993,JPO