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Influence of Dibenzo-18-crown-6 Ether on the Kinetics of Anionic Polymerization of β-Propiolactone

✍ Scribed by Slomkowski, Stanislaw; Penczek, Stanislaw

Book ID
126417819
Publisher
American Chemical Society
Year
1976
Tongue
English
Weight
356 KB
Volume
9
Category
Article
ISSN
0024-9297

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✍ A. Warshawsky; A. Deshe; L. Shechtman; O. Kedem 📂 Article 📅 1990 🏛 Elsevier Science ⚖ 539 KB

Dibenzo-18-crown-6 and formaldehyde polycondensate (PDBCO, M w = 6760, was synthesized by condensation in NMP using formic acid as catalyst. Alternatively, a sequence of reaction steps, involving sodium bromide salts, for solubilization (see Scheme 1) was worked up. PDBC as its sodium bromide comple