5521-31-3Relevant articles and documents
A perylene pigment preparation method
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Paragraph 0026-0028, (2019/04/11)
The present invention provides a perylene pigment preparation method, is to adopt the N - substituted - 1, 8 - naphthalene imide as the starting material, in order to N - methyl imidazole with DBU or DBN N - methyl imidazole with the mixed solvent as reaction medium, sodium alcoholate or polysiloxane as catalyst, through 130 - 170 °C reaction 3 - 10 hours, after the reaction, the reaction system cooling, concentrated under reduced pressure, recycling the reaction solvent, collects the product make the perylene pigment. Preparation of perylene pigment coloring high, bright color, good dispersibility, and this process is simple, time consuming and short, the reaction temperature is low, to reduce the use of strong alkali and concentrated sulfuric acid, the production cost is reduced, the reduction of the waste water and the solid waste discharge.
Method for preparing C.I. pigment red 179
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Paragraph 0035; 0036, (2016/12/01)
The invention relates to a method for preparing N,N'-dimethyl-3,4,9,10-perylenetetracarboxylic diimide (C.I. pigment red 179). A reaction is conducted on N-methyl-1,8-naphthalimide in a system composed of a mixed base composed of caesium hydroxide or hydrate thereof and DBU and polar aryl halide at 140 DEG C-190 DEG C, and N,N'-dimethyl-3,4,9,10-perylenetetracarboxylic diimide can be obtained. After pigment-based processing is conducted on N,N'-dimethyl-3,4,9,10-perylenetetracarboxylic diimide, the crystal form of N,N'-dimethyl-3,4,9,10-perylenetetracarboxylic diimide is the same as that of a C.I. pigment red 179 product.
Perylene derivatives formation in reaction of 3-bromobenzanthrone and 4-bromonaphthalic acid derivatives with a reduction system NiCl2 - 2,2′bipyridyl (or 1,10-phenathroline) - Zn
Adonin,Ryabinin,Starichenko
, p. 861 - 865 (2007/10/03)
The reaction of 3-bromobenzanthrone and 4-bromonaphthalic acid derivatives with a reduction system NiCl2-2,2′bipyridyl (or 1,10-phenathroline)-Zn gives rise to compounds containing perylene fragment. Under similar conditions was established a possibility to transform substituted 1,1′-binaphthyls into the corresponding perylene derivatives.