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The Synthesis of Pentaerythritol-based Hyperbranched Unsaturated Poly(amide ester)

WANG Xiu-xia,MA Jia-ju,WANG Zhan-si(Chemical Engineering School,Anhui University of Science and Technology,Huainan 232001,China)  
AB2 type-hyperbranched poly(amide ester)monomer were synthesized by use of maleic anhydride(MA) and diethanolamine(DEA).The hyperbranched unsaturated poly(amide ester)(HBP)was synthesized by pentaerythritol and AB2 type-monomer.The affection of the reaction conditions,such as the amount of catalyst,temperature and the reaction time on the reaction were studied.The experimental result showed that the optimum conditions were as follows:pentaerythritol reacted with AB2 type-monomer for 5h at 140℃ with p-toluenesulfonic acid which quality was 1.5% of reactants'.
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