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Anionic synthesis of in‐chain 3° amine‐functionalized polybutadienes
Author(s) -
Quirk Roderic P.,
Kuang Jianxin
Publication year - 1994
Publication title -
macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 1022-1360
DOI - 10.1002/masy.19940850120
Subject(s) - anisole , triethylamine , ether , chemistry , reactivity (psychology) , anionic addition polymerization , polymer chemistry , copolymer , styrene , amine gas treating , butyllithium , benzene , monomer , medicinal chemistry , organic chemistry , catalysis , polymer , medicine , alternative medicine , pathology
Anionic copolymerizations of butadiene (M 1 ) with excess 1‐(4‐dimethylaminophenyl)‐1‐phenylethylene (M 2 ) were conducted in benzene at room temperature for 24–48h using sec‐butyllithium as initiator. Anisole, triethylamine and t‐butyl methyl ether were added in ratios of [B]/[RLi] = 60, 20, 30, respectively, to promote copolymerization. Narrow molecular weight distribution copolymers with M̄n = 14 × 10 3 to 32 × 10 3 g/mol (M̄ w /M̄n =1.02–1.03) and 8,12 and 30 amine groups per chain for anisole, triethylamine and t‐butyl methyl ether, respectively, were obtained. The butadiene monomer reactivity ratios (r1) were 42, 33 and 14 for anisole, triethylamine and t‐butyl methyl ether, respectively.