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First Example of Atom Transfer Radical Polymerization of 1,3-Butadiene
Heo, Seoung Uk,Lee, Do Weon 한국공업화학회 2003 응용화학 Vol.7 No.2
Novel ligands, alkyl (R 〓 methyl (1a), isopropyl (1b), cyclopentyl (1c), cyclohexyl (1d)) pyridine-2-carboximidates, have been prepared by hte reaction of 2-cyanopyridine with the corresponding alcohols. While all these ligands with CuBr showed the polymerization activity of methyl methacrylate, the CuBr/2(1c) catalytic system was very effective in our previous work. Using our new catalytic ligand system, the polymerization of 1,3-butadiene (BD) was carried out successfully. Several effects, such as ligand, solvent, temperature and kinetic study of homopolymerization of 1,3-butadiene have been studied systematically.
Heo, Seoung Uk,Lee, Dong Heon,Lee, Do Weon 한국공업화학회 2004 응용화학 Vol.8 No.2
Atom transfer radical polymerization (ATRP) is one of the most successful methods to polymerize styrenes, (meth)acrylates and a variety of other monomers in a controlled fashion. Novel ligands, 4-alkyl pyridine-2-carboxamides (R = methyl (1a), t-butyl (1b)). have been prepared by the reaction of 4-alkyl-2-cyanopyridine with water in the presence of 0.4 mot% base in ethanol solution. The living free radical polymerization of 1,3-butadiene has been shown to be a facile process in the presence CuBr/1a catalytic system. Several effects, such as ligand, solvent, temperature and kinetic study of ATRP of 1,3-butadiene (BD) have been studied systematically.