Finely divided highly transparent diketopyrrolopyrrole pigments

Details Finely divided highly transparent diketopyrrolopyrrole pigments Finely divided highly transparent diketopyrrolopyrrole pigments

C - Chemistry, Metallurgy

09

B

C09B 57/00 (2006.01) C07D 487/04 (2006.01) C08K 5/3415 (2006.01) C08K 5/3417 (2006.01)

Patent

CA 2128916

Novel finely divided highly transparent diketopyrrolopyrrole pigments Abstract Finely divided 1,4-diketopyrrolo[3,4-c]pyrroles of the formula Image (I), where A and B are each independently of the other a radical of the formula Image (II), wherein at least 84 % by weight of the particles have a Stokes equivalent diameter of ? 0.25 µm, and mixtures thereof. The substituents R1 and R2 are defined in claim 1. These pigments are notable for a very pure hue and outstanding transparency.

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