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Synthesis and Characterization of Hyperbranched Poly(β-ketoester) by the Michael Addition

✍ Scribed by Yang-Bae Kim; Hyun Kyoung Kim; Haruo Nishida; Takeshi Endo

Publisher
John Wiley and Sons
Year
2004
Tongue
English
Weight
95 KB
Volume
289
Category
Article
ISSN
1438-7492

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✦ Synopsis

Abstract

Summary: A novel hyperbranched poly(β‐ketoester) was synthesized from 2‐(acetoacetoxy)ethyl acrylate by the Michael addition in the presence of 1,8‐diazabicyclo[5.4.0]undec‐7‐ene (DBU) as catalyst. ^1^H NMR integration experiments revealed that the degree of branching in the poly(β‐ketoester) was remarkably high at a level of 82.9%. The number‐average molecular weight of the polymer was between 2 100 and 12 000 and increased with reaction temperature and conversion.

Synthesis of hyperbranched polymer by Michael addition of AAEA.

magnified imageSynthesis of hyperbranched polymer by Michael addition of AAEA.

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