Atom Transfer Polymerization of Methyl Methacrylate Mediated by Alkylpyridylmethanimine Type Ligands, Copper(I) Bromide, and Alkyl Halides in Hydrocarbon Solution

摘要: Schiff bases of types 1, 2, and 3, easily prepared by the condensation primary amines with pyridine-2-carboxaldehyde, glyoxal, or 2-acetylpyridine, respectively, are described as ligands for a copper(I) catalyst in atom transfer polymerization range methacrylates toluene xylene solution. Increasing length alkyl group on type 1 increases solubility nonpolar solvents. The rate going from R = ethyl to propyl; however, increasing further, we see no effect rate. molecular weight distribution is narrow all where n-alkyl, number-average (Mn) linearly conversion. A decrease loss control observed when branching introduced α-position side chain. approximately first order initiator, 0.90 ± 0.22, CuBr, 0.13, methyl methacrylate, 0.93 0.01. Polymerization Cu...