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Direct Synthesis of Polycarbonate from Carbon Monoxide and Bisphenol A Using Efficient Pd Complex Catalyst Systems
Author(s) -
Ishii Hirotoshi,
Goyal Meenakshi,
Ueda Mitsuru,
Takeuchi Kazuhiko,
Asai Michihiko
Publication year - 2001
Publication title -
macromolecular rapid communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.348
H-Index - 154
eISSN - 1521-3927
pISSN - 1022-1336
DOI - 10.1002/1521-3927(20010301)22:5<376::aid-marc376>3.0.co;2-x
Subject(s) - polycarbonate , carbon monoxide , catalysis , bisphenol a , carbonylation , yield (engineering) , ligand (biochemistry) , chemistry , polymer chemistry , medicinal chemistry , organic chemistry , materials science , receptor , epoxy , biochemistry , metallurgy
A direct oxidative carbonylation procedure of Bisphenol A to polycarbonate catalyzed with efficient Pd complex systems has been developed. Pd/2,2′‐bipyridyl complexes possessing 6,6′‐dimethyl substituents, Pd/2,2′‐biquinoline complexes, and dinuclear Pd complexes bridged with a pyridylphosphine ligand were found to give higher molecular weights and yields than conventional Pd catalyst systems. Highest molecular weight ( M̄ n = 5 600, M̄ w = 12 900) and yield (86%) were obtained using the Pd/6,6′‐dimethyl‐2,2′‐bipyridyl complex system.