Diketopyrrolopyrrole

C - Chemistry – Metallurgy – 09 – B

Patent

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Details

C09B 57/00 (2006.01) C08K 5/3415 (2006.01) C09B 67/00 (2006.01) C09B 67/10 (2006.01)

Patent

CA 2326005

An alpha-II form of a 1,4-diketo-3,6-di(4'-tertiary butyl phenyl)-2,5-dihydro pyrrolo[3,4-c]pyrrole pigment characterized by C.I.E color space values, particularly a high chroma value and yellow hue, in masstone, and a process for its preparation is disclosed. The 1,4-diketo-3,6-di(4'-tertiary butyl phenyl)-2,5-dihydro pyrrolo[3,4-c]pyrrole pigment is especially useful for coloring coating compositions, such as automotive paints, and plastics.

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