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Synthesis and Characterization of a Novel Low-Viscosity Unsaturated Hyperbranched Polyester Resin

✍ Scribed by D. Zhang; J. Wang; T. Li; A. Zhang; D. Jia

Publisher
John Wiley and Sons
Year
2010
Tongue
English
Weight
357 KB
Volume
34
Category
Article
ISSN
0930-7516

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✦ Synopsis

Abstract

Hyperbranched thermosetting resin is the best additive for toughening and reinforcing linear thermosetting resin. A novel low‐viscosity unsaturated hyperbranched polyester resin (UHPR) is synthesized by the reaction between maleic anhydride monoisooctyl alcohol ester and a hydroxyl‐ended hyperbranched polyester resin (HPR) prepared from phthalic anhydride (PA) and trimethylolpropane (TMP). The structure of HPR is characterized by FT‐IR and ^1^H NMR, and its degree of branching is deduced by comparing with the ^1^H NMR spectrum of a model compound. The molecular weights of HPR and UHPR are determined by theoretical calculation and MALDI‐TOF MS measurements. This low‐viscosity (< 10 000 cP) novel UHPR can be applied in the field of environment‐friendly coatings and in toughening and reinforcing linear unsaturated polymers.

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