Perylenes and Perinones

Perinones are structurally similar to perylenes being made by condensing naphthalene tetracarboxylic dianhydride with amines, but in this case 1,2-diamines, e.g. Cl Pigment Orange 43 (2.71), or its cis isomer. The isomers can be separated by fractionation of their salts. They offer orange to bordeaux shades with similar properties to perylenes, but are less commercially important. 

Both perylenes and perinones show significant fluorescent behaviour and have found outlets based on this characteristic (See Chapter 3, section 3.5.1.3). 

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Perylene and perinone pigments are chemically related. The group of perylene pigments is derived from perylene-3,4,9,10-tetracarboxylic acid 67, while perinone pigments are derivatives of napthalene-l,4,5,8-tetracarboxylic acid 68 ... 

Perylene and perinone pigments are closely related chemically and are manufaemred by essentially the same route. Perylenes are diimide derivatives of perylene-3,4,9,10-tetracarboxylic acid, while perinones are derivatives of naphthalene-1,4,5,8-tetracarboxylic acid (Herbst and Hunger, 1997). 

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