2379-77-3

Usage

Uses

Used in Textile Industry:
Vat Red 32 is used as a dye for cotton fabrics. It is particularly useful for direct printing, resist and discharge printing due to its medium levelness and affinity for cotton. The dye is known for its good fastness properties, including ironing fastness, chlorine bleach fastness, light fastness, oxygen bleach fastness, and soaping fastness. It has been assigned the standard C.I. Pigment Red 189.
The fastness properties of Vat Red 32 are as follows:
Ironing Fastness: ISO 4, AATCC 5
Chlorine Bleach: ISO 3, AATCC 4-5
Light Fastness: ISO 5, AATCC 6
Mercerized: N/A
Oxygen Bleach: ISO 4, AATCC 4
Soaping: ISO 4, AATCC 4
Fading: N/A
Stain: N/A
These properties make Vat Red 32 a versatile and reliable dye for various applications in the textile industry.

Preparation

Perylene-3,4,9,10-tetracarboxylic acid and 4-Chlorobenzenamine condensation.

Flammability and Explosibility

Notclassified

Standard

Ironing Fastness

Fading

Stain

ISO

4

AATCC

5

InChI:InChI=1/C36H16Cl2N2O4/c37-17-1-5-19(6-2-17)39-33(41)25-13-9-21-23-11-15-27-32-28(36(44)40(35(27)43)20-7-3-18(38)4-8-20)16-12-24(30(23)32)22-10-14-26(34(39)42)31(25)29(21)22/h1-16H

Upstream product

• 81-32-3 perylene-3,4,9,10-tetracarboxylic acid 
• 106-47-8 4-chloro-aniline 
• 150106-94-8 2,9-diaza-3,8-dioxo-2,9-di(4-chlorophenyl)-1,2,3,8,9,10-hexahydrodibenzo[cd,lm]1,10-diolate 
• 6915-00-0 2-(4-chlorophenyl)-1H-benzo[de]isoquinoline-1,3(2H)-dione 
• 128-69-8 perylene-3,4,9,10-tetracarboxylic acid 3,4:9,10-dianhydride 

Downstream Products

• 131692-30-3 C₃₆H₁₈Cl₂N₂O₄^(2-) 
• 131692-31-4 C₃₆H₁₉Cl₂N₂O₄^(3-) 
• 1200827-15-1 N,N'-bis(4-chlorophenyl)-1,7-(disulfuric acid)perylene-3,4,9,10-tetracarboxy diimide 

Relevant academic research and scientific papers

HIGH-SATURATION SCARLET COLOR DYE INK FOR HIGH-SPEED INKJET PROCESS

Highly saturated scarlet dye ink for a high-speed inkjet process and a method of preparing the highly saturated scarlet dye ink are disclosed. In particular, an ink composition according to the present invention includes a dye including a compound represented by Formula 1, and further includes, in addition to the dye, distilled water, a surfactant, and an additive. The ink composition develops a highly saturated scarlet color that is unable to be developed by existing inks for digital textile printing (DTP), and has high water solubility, excellent heat resistance, and light-fastness, and thus may be effectively used as dye and ink for a high-speed inkjet process.

The synthesis and characterisation of the perylene acid dye inks for digital textile printing

Five perylene acid dyes were synthesized to manufacture water-based inks for the high-speed ink jet printing process, including digital textile printing. All the synthesized perylene dyes exhibited superior stability and optical properties compared to a commercially used azo dye. Their water solubility was efficiently enhanced by introducing bulky and hydrophilic substituents to ensure excellent long-term stability when formulated as water-based inks. The water-based inks with these perylene dyes showed outstanding print clarity with the colours different from the basic colour composition of the existing digital textile printing inks. They also exhibited good ejection performance and helped conduct well-controlled pattern printing when used in a commercial ink jet printing machine.

A perylene pigment preparation method

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.

The synthesis of thermally-stable red dyes for LCD color filters and analysis of their aggregation and spectral properties

Three thermally-stable red dyes of azo, quinacridone and perylene derivatives were synthesized and dye-based color filters were manufactured for use in liquid crystal displays. The aggregation behavior of the dyes and their spectral properties in film sta

A "green" route to perylene dyes: Direct coupling reactions of 1,8-naphthalimide and related compounds under mild conditions using a "new" base complex reagent, t-BuOK/DBN

The direct coupling reactions of 1,8-naphthalimide compounds efficiently occurred at 130 or 170 °C without the intervention of the leuco form dyes in the presence of base complex reagent, t-BuOK/1,5-diazabicyclo[4.3.0]non-5-ene (DBN), to give the corresponding perylene dyes in good yields with >95% purities. A possible mechanistic speculation for these oxidative coupling reactions is briefly discussed.

PRODUCTION AND PROPERTIES OF A NUMBER OF PRODUCTS FROM REDUCTIVE CUBOGEN CYCLIZATION IN ALKALINE AQUEOUS SOLUTION

This paper examines the conditions for isolation of the end products of reductive cyclization of red cubogen in an alkaline aqueous medium and gives data on product identification.