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本文利用环氧基功能团与羟基反应，使聚酯分子扩链，合成了A—B—A型嵌段共取物，其耐酸碱性比普通型不饱和聚酯强可与3301双酚A型不饱和聚酯媲美，提高了聚酯的耐碱性。
In this paper, epoxy functional groups and the hydroxyl reaction, the polyester molecule chain extension, the synthesis of A-B-A-type block copolymer, its acid-base than the average unsaturated polyester can be strong and 3301 bisphenol A-type unsaturated polyester comparable to improve the polyester’s alkali resistance.