1) Synthesis of polyketones by direct polycondensation of dicarboxylic acids with diaryl compounds using phosphorus pentoxide/methanesulfonic acid as condensing agent and solvent
M Ueda, T Kano
Die Makromolekulare Chemie, Rapid Communications
Volume 5 Issue 12, Pages 833 - 836
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http://dx.doi.org/10.1002/marc.1984.030051210M Ueda
Die Makromolekulare Chemie, Rapid Communications
Volume 6 Issue 4, Pages 271 - 274
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http://dx.doi.org/10.1002/marc.1985.030060410M Ueda, M Oda
Polymer Journal
Vol. 21 (1989) , No. 9 pp673-679
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http://dx.doi.org/10.1295/polymj.21.673M Ueda, H Sugita, T Waragai
Polymer Journal
Vol. 20 (1988) , No. 5 pp433-437
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http://dx.doi.org/10.1295/polymj.20.433