A novel hyperbranched polymer with aryl borate backbone was obtained by a facile A2+B3 method. Thermal analysis revealed that HBb exhibited excellent thermal stability with a Tg of 221 °C and a weight residue of 71.3% at 800 °C under nitrogen atmosphere. HBb displayed good solubility with readily soluble in common polar solvents. By blending 10 wt % HBb with phenolic resins, the weight residue of the cured thermoset resins was greatly improved.
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Liu et al. (2007) studied this question.
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