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One-Pot Synthesis of Hyperbranched Polyethylenes Tethered with Pendant Acryloyl Functionalities by Chain Walking Copolymerizations

✍ Scribed by Shawn Morgan; Zhibin Ye; Kejian Zhang; Ramesh Subramanian

Book ID
102486703
Publisher
John Wiley and Sons
Year
2008
Tongue
English
Weight
461 KB
Volume
209
Category
Article
ISSN
1022-1352

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✦ Synopsis

Abstract

Chain walking copolymerization of ethylene with 1,4‐butanediol diacrylate at elevated concentrations for the synthesis of low‐viscosity hyperbranched polyethylenes tethered with a controllable amount of acryloyl functionality is reported. At concentrations much higher than the critical gelation concentrations, the diacrylate comonomer is copolymerized predominantly following the mono‐insertion pattern. A range of hyperbranched polyethylenes tethered with acryloyl functionality (1.3–4.8 mol‐%) and having low melt viscosity (ca. 25 Pa · s at 25 °C) and low glass transition temperature (T~g~ = −69 °C) has been synthesized. This unique method is specific to the Pd‐diimine‐catalyzed chain‐walking copolymerization system.

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