Diketopyrrolopyrroles (DPPs) are organic dyes and pigments based on the heterocyclic dilactam 2,5-dihydropyrrolo[3,4-c]pyrrole-1,4-dione, DPP has high stability to heat but not to acid and base. The alkylation of amide groups improves their solubility.
Diketopyrrolopyrroles (DPPs) are organic dyes and pigments based on the heterocyclic dilactam 2,5-dihydropyrrolo[3,4-c]pyrrole-1,4-dione, DPP has high stability to heat but not to acid and base. The alkylation of amide groups improves their solubility.
Source: Wikipedia "Diketopyrrolopyrrole dye" · CC BY-SA 4.0
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