Process for the direct preparation of pyrrolo¬3,4-c|pyrroles

Details Process for the direct preparation of pyrrolo¬3,4-c|pyrroles Process for the direct preparation of pyrrolo¬3,4-c|pyrroles

C - Chemistry, Metallurgy

07

D

C07D 487/04 (2006.01) C07D 491/04 (2006.01) C09B 57/00 (2006.01) C09B 67/22 (2006.01) C09K 11/06 (2006.01)

Patent

CA 2457710

The present invention relates to a process for the direct preparation of pyrrolo[3,4-c]pyrroles (DPPs) of the formula (1) , pigment compositions containing them and their use for coloring high molecular weight organic materials, such as plastics and paints. The obtained DPPs of the formula (I) possess a higher colour strength, a higher chroma, a purer shade and a higher opacity versus corresponding commercially available DPPs.

La présente invention concerne un procédé permettant la préparation directe de pyrrolo[3,4-c]pyrroles (DPP) de formule (I), des compositions pigmentaires les contenant, et leur utilisation pour la coloration de matières organiques à poids moléculaire élevé, telles que des plastiques ou des peintures. Les DPP de formule (I) obtenus ont une intensité de couleur supérieure, une saturation supérieure, une teinte plus pure, et une opacité supérieure vis-à-vis des DPP disponibles dans le commerce.

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