Look as though the polydiketoenamines themselves are also quite easy to make;

>"Surprisingly, polydiketoenamines could be made simply by mixing ketones and amines. ‘It’s a click reaction that works at room temperature, without needing catalysts, additives or even a solvent,’ says Helms. ‘They just require a few minutes in a ball mill.’"

https://www.chemistryworld.com/news/new-family-of-polymers-c...