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Preparation and properties of stat-copoly-(oxyethylene-oxypropylene)-block-poly (oxyethylene): 1. Use of crown ether in the anionic copolymerization of propylene oxide and ethylene oxide

✍ Scribed by Yulin Deng; Jifeng Ding; Gaer Yu; Richard H. Mobbs; Frank Heatley; Colin Price; Colin Booth

Publisher: Elsevier Science
Year: 1992
Tongue: English
Weight: 456 KB
Volume: 33
Category: Article
ISSN: 0032-3861
DOI: 10.1016/0032-3861(92)90500-v

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Use of crown ether in the anionic polymerization of propylene oxide—3. Preparation and micellization of diblock-copoly(oxypropylene/oxyethylene)

✍ Jifeng Ding; David Attwood; Colin Price; Colin Booth 📂 Article 📅 1991 🏛 Elsevier Science 🌐 English ⚖ 467 KB

Diblock-copoly(oxypropylene/oxyethylene)s with moderately-long P-blocks (about 200 P units) and narrow block-length distributions were prepared by use of 18-crown-6 ether and the potassium salt of methoxypropanol in the sequential anionic polymerization of bulk propylene oxide at room temperature an