Through the peculiarity contact-coat,composes the ethoxy methylene propane dioic acid dio-ethylest which improves the quality and yield of the product.

• 根据缩合原理，研究并提出了“克兰逊”催化缩合法，通过特性触煤合成了乙氧基甲叉基丙二酸二乙酯产品，提高了产品质量及回收率。