Triketoimidazolidine polymers

Closely related to the polyhydantoins are the 2,4,5-triketoimidazolidine polymers, known as polyfparabanic acids) and produced by Exxon (Tradlon) and Hoechst. They contain the basic structure... 

Poly(parabanic acids) are close relatives of poly(hydantoins). They are also known as 2,4,5-triketoimidazolidine polymers. They can be produced by several processes, for example, from oxamidic esters and (capped) isocyanates ... 

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