Polymerising carboxyl and/or nitrile gp.-contg. vinyl monomer(s) - using catalyst system contg. radical-forming initiator and manganic cpd. accelerator

摘要

Radical polymerisation of COOH and CN-contg. vinyl monomers is released with a system comprising, by wt. w.r.t. monomer wt., 0.01-2% each of a radical-forming initiator, (I), and an Mn (III) cpd. (II). Initiator system is used partic. for polymerising acrylic- or methacrylic acid and/or their nitriles, copolymerising methacrylic acid and methacrylonitrile, and copolymerising (meth)acryonitrile with other (meth)acrylic acid derivs., e.g. Me methacrylate. (II)-addn. accelerates radical polymerisation and suppresses the inhibition period. Conversions, at a given temp., are increased by 5-8%. Polymerisation time to complete vinyl monomer polymerisation reduced.