Diaryl yellow
Diaryl yellow , or Diarylidgelb , is a group of green to reddish yellow, synthetic organic disazo pigments . Benzidine derivatives - in many cases 3,3'-dichlorobenzidine - are used as diazo components, and acetoacetic anilides, which are obtained by reacting the correspondingly substituted anilines with diketene , are used as coupling components . They are used for paints , plastics and printing inks .
The first patent of this pigment group, CI Pigment Yellow 13, was filed in 1911 but was not used until 1935.
Examples
Color Index (CI) hue Ref. Surname number R 1 R 2 R 3 X Y Pigment yellow 12 21090 H H H Cl H Warm, reddish yellow Pigment yellow 13 21100 CH 3 CH 3 H Cl H Red or greenish yellow Pigment yellow 14 21095 CH 3 H H Cl H Greenish yellow Pigment yellow 17 21105 OCH 3 H H Cl H Greenish yellow, lemon yellow Pigment yellow 55 21096 H CH 3 H Cl H Reddish yellow Pigment yellow 83 21108 OCH 3 Cl OCH 3 Cl H Reddish yellow
Individual evidence
- ↑ a b c d e f g Clayton, M. Raw Materials: Yellow Pigments In: Leach, R. The Printing Ink Manual. Van Nostrand Reinhold, 1988. ISBN 9789401170970 . Retrieved July 20, 2016.
- ↑ a b c d e f g The Color of Art Pigment Database: Pigment Yellow artiscreation.com , David Myers. Retrieved July 20, 2016.
- ↑ Entry on diaryl yellow pigments. In: Römpp Online . Georg Thieme Verlag, accessed on March 2, 2019.
- ↑ Schäning, A. et al. (2010). Synthetic organic pigments in artists' colors of the early 20th century Institute for Natural Sciences and Technology in Art, Academy of Fine Arts, Vienna. Retrieved July 20, 2016.