C - Chemistry – Metallurgy – 09 – B
Patent
C - Chemistry, Metallurgy
09
B
C09B 57/00 (2006.01) C07D 487/04 (2006.01) C08K 5/315 (2006.01) C08K 5/3415 (2006.01)
Patent
CA 2128927
Novel finely particulate cyano-substituted diketopyrrolopyrrole pigments and thepreparation thereof Abstract of the Disclosure Finely particulate 1,4-diketopyrrolo[3,4-c]pyrroles of formula Image (I), wherein A is a radical of formula Image (II) wherein R1 is 3-CN, 4-CN Image , in which at least 84 % of the pigment particles have a Stokes equivalent diameter of ? 0.40 µm, These pigments are distinguished by exceptional purity of shade, transparency, high gloss, good dispersibility and good rheology.
Ciba Specialty Chemicals Holding Inc.
Fetherstonhaugh & Co.
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