What is Remazol dyes?
Remazols are reactive dyes suitable for dyebath, printing and painting on Cotton, Rayon and other regenerated cellulose materials. Remazol dyes will also dye Silk and Wool in a HOT dyebath with a weakly acid pH of 4.5 to 5.0.
What is the difference between direct dye and reactive dye?
Reactive dyes are most commonly used in dyeing of cellulose like cotton or flax, but also wool is dyeable with reactive dyes. Reactive dyes are usually used when dyeing dark colors. Direct Dye is a dye used in a process in which dye molecules are attracted by physical forces at the molecular level to the yarn.
What is reactive dye in textile?
Reactive dye is the dye that can react with a fibre to form a covalent link, that is forming a permanent attachment in the fibre and could not be removed by repeated treatment with boiling water under neutral conditions. Consequently, the dyes become parts of the fibre, leading to outstanding colour fastness to wash.
What is the difference between a dye and a pigment?
Colorants are either dyes or pigments. Technically speaking, the difference is that dyes are soluble in the host material—typically water—while pigments are not. Another difference is that dyes do not scatter light and look transparent. On the other hand, pigments do scatter light and, thus, they are opaque (see Fig.
What are fiber reactive dyes made of?
Fiber-reactive dyes, which are produced from petrochemicals, molecularly bond with fabric, creating colorfast, long-lasting shades. They’re used on cellulosic fabrics such as cotton, linen, hemp, rayon and Tencel. They can also be used with wool and some synthetic fibers including nylon.
What are types of dyeing?
Different Types of Dyes with Chemical Structure
| Name of Dyes | Application |
|---|---|
| Basic dye | Jute, Acrylic |
| Reactive dye | Cotton, Wool, Silk, Viscose, Nylon |
| Sulfur dye | Cotton, Viscose |
| Mordant dye | Cotton, Wool, Silk |
What are the two types of dyes?
1. Anionic dyes: Reactive dye, acid dye, etc. 2. Cationic dyes: Basic dye.
Why the wash fastness of reactive dyes is better than direct dyes?
Textile materials dyed with reactive dyes have very good wash fastness with rating about 4-5 due to strong covalent bonds formed between fibre polymer and reactive group of dye. Reactive dye gives brighter shades and has moderate rubbing fastness. Dyeing method of reactive dyes is easy.
What is the difference between pigment and reactive dye?
The reactive dye particles form a covalent bond with the fabric and essentially stain it the desired color. Pigment dyes on the other hand, are insoluble molecules that sit on top of the fiber. No chemical reaction takes place. The pigment adheres to the fabric with the help of binders.
Why is reactive dye so called?
The term reactive signifies that the dyes react rapidly with an inert fiber like cotton and produces co-valent bond formation with an excellent color fastness. So, this dye stuff is called reactive dye.
What are the examples of reactive dyes?
Reactive dyes
| Chemical Name | CAS | MF |
|---|---|---|
| Reactive Brown 2 | 12236-93-0 | C31H20ClN9Na4O12S4 |
| Reactive Blue 74 | 12677-16-6 | C28H23ClN6O9S2.2Na |
| Reactive Orange 5 | 70210-21-8 | C26H17ClN7Na3O10S3 |
| PROCION YELLOW H-E3G | 59112-78-6 | C52H34Cl2N18O20S6.6Na |
What are the new Remazol Sam reactive dyes?
The new Remazol SAM package contains 11 new reactive dyes for pale to medium and for critical shades as well as dyes for economical dark shades. In addition it includes 2 dyes for very bright Orange and Royal shades.
Can you mix Royal Sam with Remazol RR?
All Remazol SAM dyes can be combined with each other (except Royal SAM) and offer good combinability, level dyeing behavior and high RFT results. Of course they can also be combined with most other Remazol, Remazol RR and Remazol RGB/Ultra RGB dyes.
Which is the best color for Remazol terracotta Sam?
Remazol TerraCotta SAM is a brownish yellow component for deep ternary dyeings together with e.g. Maroon SAM and Pacific or Space SAM. Remazol Orange SAM is a very bright and reddish orange which should mainly be used as self shade are in combination with other bright dyes for high brilliancy shades.
Which is the best Remazol for pale shades?
Remazol Red SAM is the recommended red component for pale to medium and critical shades. It’s leveling properties as well as high light fastness level makes it a perfect partner for this shade area.