Imidazol-Farbstoffe X. Über die Kondensation der 2,6- und 2,7-Dichlornaphthalin-1,4,5,8-tetracarbonsäure mit o-Phenylendiamin

Arient, J.; Dvořák, J.; Šnobl, D.

doi:10.1135/cccc19632479

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Perylene-perinonf Pigments1

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1967

1971

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“…Arient et al (56) have investigated the effect of a chlorine atoin in the naphthalene ring on the proportion of cis-isomer to trans-isomer obtained. They found that 2,6-dichloronaphthalene-1,4,5,8-tetracarboxylic acid favoured the formation of the transisomer (82 ·5 % trans-isomer), whereas 2, 7-dichloronaphthalene-1,4,5,8-tetracarboxylic acid gave almost equal amounts of each isomer (42 % trans-isomer).…”

Section: Perylene-perinonf Pigmentsmentioning

confidence: 99%

Recent Developments in Organic Pigments

Shah¹

1967

Journal of the Society of Dyers and Colourists

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Azo, vat and phthalocyanine pigments are discussed briefly. The demand for high‐grade pigments has led to the development of new classes of organic pigments, viz. quinacridone, dioxazine, perylene—perinone, fluorubine, pyrrocoline, and isoindolinone pigments. The preparation and properties of these pigments are discussed, particular attention being paid to the range of colours and the fastness properties obtained and to the prospects of commercial development.

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Section: Perylene-perinonf Pigmentsmentioning

confidence: 99%