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Stereospecific polymerization of isobutyl vinyl ether by AlR3–VCln catalysts. I. Influence of preparative conditions of the catalysts

✍ Scribed by Joh, Yasushi ;Yuki, Heimei ;Murahashi, Shunsuke

Publisher
Wiley (John Wiley & Sons)
Year
1970
Tongue
English
Weight
862 KB
Volume
8
Category
Article
ISSN
0449-296X

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Polymerization of 4-methyl -1,3-pentad iene with MAO/Ti(OnBu)4. The influence of preparation/ageing temperature upon the stereospecificity of the catalyst
✍ Giovanni Ricci; Lido Porri 📂 Article 📅 1997 🏛 Elsevier Science 🌐 English ⚖ 343 KB

4-Methyl-l,3-pentadiene has been polymerized with the system Ti(OnBu)4/MAO at different temperatures in the range +20°C to -78°C, using aged and unaged catalysts. The polymers obtained have a 1,2 syndiotactic or a mixed 1,2 syndiotactic/1,2 isotactic structure, depending on the polymerization temper