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研究了苯酐残渣组份，反应配比，合成条件，测试了其性能，主要指标达到国家有关标准，初步开发出了一种新品种，同时为工业废弃物的处理及升值探索了一条新途径。
The residues of phthalic anhydride, reaction ratio and synthesis conditions were studied. Their properties were tested. The main indexes reached the national standards and a new variety was initially developed. At the same time, a new approach for the treatment and appreciation of industrial wastes was explored.