Vat Yellow 2 is a very important anthraquinone vat dyes, also known as Shilin Yellow G or C.I. Vat Yellow 2. Its core features are bright color and excellent fastness, especially to sunlight.

Its main uses and characteristics are as follows:

1. Main application areas: Textile dyeing and printing

This is the most essential and traditional use of restoring Yellow 2. It is mainly used for dyeing cellulose fibers, such as:

·Cotton

·Linen

·Adhesive fiber (artificial cotton, artificial silk)

Due to its excellent performance, it is often used in textiles that require extremely high fastness, such as:

·Outdoor textiles: tents, sunshades, canvas, etc., require resistance to prolonged sun exposure.

·Automotive interior fabrics: need to resist UV exposure and friction.

·High end workwear and uniforms: require resistance to washing and friction.

·Decorative fabrics: such as sofa fabrics, curtains, etc.

2. Used as an organic pigment

After specific post-treatment processes such as acid dissolution and particle surface treatment, Vat yellow 2 can be converted into the pigment form of Vat yellow 2. In this form, it is called Pigment Yellow 24. As a pigment, it is widely used in:

·Advanced paints and coatings, especially industrial paints and automotive paints that require high weather resistance.

·Plastic coloring: used for coloring PVC, polyolefin and other plastics, with good migration resistance and heat resistance.

·Advanced ink: such as metal decorative printing ink, etc.

3. Iconic varieties of the vat dyes family

Vat Yellow 2 is a classic and representative variety of reducing dyes. Its molecular structure and dyeing mechanism (insoluble in water, needs to be Vat to soluble chromophores in alkaline sodium hydroxide solution to dye fibers, and then oxidized to restore insoluble dyes fixed on fibers) are important cases for learning and understanding the characteristics of reducing dyes.

Summary of main features:

·Advantages:

·Extremely high sun fastness: This is its most prominent advantage.

·Bright green light yellow: The color light is pure and bright.

·Excellent wet treatment fastness: Good resistance to washing, friction, and chlorine bleaching (partially).

In summary, Vat yellow 2 is a high-performance vat dyes mainly used for dyeing and printing high-end cellulose fiber textiles with extremely high requirements for color vividness and various fastness (especially sun resistance). It is also an important organic pigment.

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