采用聚醚改性MDI，特别是高活性聚醚改性MDI，操作简便，产品质量好。
The modification of MDI by polyether, especially high active polyether, was simple in operation and superior in quality of product.
醇固化体系必须用高活性聚醚，但是固化体系受环境水分的影响比较大，产物性能比较差。
High activity polyol is required for system cured by ol-chain-extender, but this system is easily influenced by ambient moisture and its physical properties are poor.
采用氨基丁酸酯法合成了可用于喷涂聚脲弹性体的高活性端氨基聚醚。
Some novel polyoxyalkyleneamine with specific structure and high reaction activity used in sprayed polyurea elastomer have been synthesized.
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