Benzimidazolone Pigment Orange

The chemistry and manufacture of the coupling components for yellow/orange and red benzimidazolone pigments are treated separately. 

Yellow and Orange Benzimidazolone Pigments -Coupling Component... 

Commercially Available Benzimidazolone Pigments 361 Pigment Orange 62... 

Pigment Orange 36 [12236-62-3] 11780 monoaZo benzimid- azolone coupling of diazotized 2-nitro-4-chloro-aniline with acetoacetyl-5-amino-benzimidazolone... 

Benzimidazolone orange R036O Benzimidazolone orange HL. See Pigment orange 36... 

While the acetoacetyl derivative 1 provides greenish yellow to orange products, the naphthoylamino compound 2 affords colorants having medium red to carmine, maroon, bordeaux or brown shades. Figure 10-2 summarizes the Colour Index data, shades and structural formulae of commercial available benzimidazolone pigments. 

F ure 10-2a Colour Index data, shades and structural formulae of commercially available benzimidazolone pigments (yellow and orange). 

After Wodd War II the most important discovery was the family of red—violet quinacridone pigments, followed by the mosdy yellow-orange benzimidazolone and isoindolinone pigments, and the most recent development of the red diaryl pyrrolopyrroles. On a value basis, polycyclic pigments, excluding copper phthalocyanines, represent about 17% of the wodd oiganic pigment market (4). 

Synonyms Benzimidazolone yellow FI3G Empirical C18FI14F3N5O3 Properties Orange solid m.w. 405.33 Uses Pigment in paints, plastics ManufJDistrib. Rampak Group... 

Suzuki, E. M., and W. P. Marshall. "Infrared Spectra of U5. Automobile Origincd Topcoats (1974-1989) III. In Situ Identification of Some Organic Pigments Used in Yellow, Orange, Red, eind Brown Noiunetallic and Brown Metallic Finishes—Benzimidazolones." Journal of Forensic Sciences 42 (1997), 619-648. 

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