Synthesis of Novel Free Radical Initiator Dimethyl Azobisisobutyrate(AIBME) and Its Application in Polymeric Polyol Production

The properties and synthesis processes of novel free radical initiator dimethyl azobisisobutyrate(AIBME) are introduced in detail.The application of AIBME in polymeric polyol production is also introduced and compared with traditional free radical initiator azobisisobutyronitrile(AIBN).By using AIBME as initiator,the conversion of vinyl monomers increased,the polymerization reaction rate and product viscosity can be well controlled,and the agglomeration can be avoided.It meets the environmental protection requirement and expands the application scope of downstream products due to absence of toxic -CN in AIBME molecules.