缩二脲多异氰酸酯的合成研究

On synthesis ways of biuret-containing polyisocyanates

缩二脲多异氰酸酯是一类重要的固化剂,目前国内仍依赖进口。对国外采用不同缩二脲试剂合成此类产品的方法和近年来的主要研究方向进行了综述,介绍了各种方案的优点和存在的问题。

Polyisocyanates which contain biuret groups are important curing agents. However, none of the domestic companies can produce such kind of compounds at present and they depend on importation. The overseas techniques of preparing biuret-containing polyisocyanates by different biuretising agents and the focused research aspects in recent years are reviewed in this paper. The benefits and deficiencies in every technique are also introduced,in order to provide reference information for the domestic research.