Cationic Red 3R

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Cationic Red 3R is a cationic dye, the physical and chemical properties of Cationic Red 3R are dark red powder, when dyed at high temperature (120℃), the shade is yellower. Compatibility value K=1.5. The cationic dyes produced by Milestone Inudstrial Co. Ltd. have stable performance and have been praised by users.

Name: Cationic Red 3R

C.I. Basic Violet 16;

CAS NO.: 6359-45-1

EINECS NO.: 228-799-3

Molecular formula: C23H29ClN2

Molecular weight: 368.9428

The purpose of Cationic Red 3R:

• Cationic Red 3R is mainly used for the dyeing of acrylic fiber, the pH value is below 5 and the color is stable.
• Cationic Red 3R can also be dyed with diacetate and nylon, but it has poor light fastness.
• Cationic Red 3R is also used for direct printing of acrylic, diacetate, and acid-modified polyester fabrics.

Therefore, Cationic Red 3R is mainly used for dyeing acrylic loose fibers, fiber strips and acrylic yarn.

Production method of Cationic Red 3R

Cationic Red 3R uses triples and p-N,N-diethylamino*benzaldehyde as raw materials, and the product is obtained by condensing the two.

Influencing factors of Cationic Red 3R

Cationic Red 3R has a high affinity for acrylic fibers. It is easy to produce uneven dyeing due to fast adsorption and slow diffusion during dyeing. Once uneven dyeing occurs, it is difficult to correct it by extending the dyeing time. In addition to the types of acrylic fibers, the factors affecting the dyeing rate of Cationic Red 3R are as follows:

1) Temperature: Temperature is an important factor in controlling levelling

2) Electrolyte: Adding electrolyte, such as sodium sulfate, salt, etc. to the dye bath, can reduce the dyeing rate of cationic dyes and have a slow dyeing effect.

3) Retarder: In Cationic Red 3R dyeing, a retarder is often added to reduce the dyeing rate and obtain a uniform dyeing effect. Cationic Red 3R has two types of retarders: cationic retarders and anionic retarders.