Types of cationic dyesCationic dyes can be classified according to two classification methods: application performance and chemical structure type. According to the application performance, China divides the existing dyes into ordinary type, X type and M type. According to the chemical structure, it Read More
Key points of chemical material operation1. Check the accuracy of the prepared dyes and chemicals according to the prescription list. When disperse dyes are used to make materials, generally use cold water to beat them and mix them evenly (stirring with a mixer for about 20-30 minutes), and then dil Read More
What is Desizing? Desizing (desize) refers to the process of treating fabrics with acids, alkalis, enzymes, etc., to remove the slurry rhyme added to the warp yarns during weaving. The purpose is to facilitate subsequent processing such as refining. Before fabric weaving, warp yarns are generally su Read More
The nature of cationic dyesSolubilityThe salt-forming alkyl and anionic groups in the cationic dye molecule affect the solubility of the dye. In addition, if there are anionic compounds in the dyeing medium, such as anionic surfactants and anionic dyes, they will also combine with cationic dyes to f Read More
ACRÍLICAS: Se disuelve en Ácido Nítrico concentrado en frío. ALGODÓN: Se disuelve en Ácido Sulfúrico concentrado en frío. LANA: Se disuelve en Sosa Cáustica al 10%, ebullición 15 min. NYLON: Se disuelve en Ácido Sulfúrico a la ebullición. POLIÉSTER: Se disuelve en Ácido Sulfúrico concentrado en frío. POLIPROPILENO: Se disuelve en Xileno a la ebullición. RAYÓN ACETATO: Se disuelve en Acetona en frío. RAYÓN VISCOSA: Se disuelve en Ácido Sulfúrico concentrado en frío. DA NATURAL: Se disuelve en Sosa Cáustica al 10%, ebullición 15 min. Read More
1. Check the accuracy of the prepared dyes and chemicals according to the prescription list. When disperse dyes are used to make materials, generally use cold water to beat them and mix them evenly (stirring with a mixer for about 20-30 minutes), and then dilute them with warm water at 40～45°C befor Read More
Purpose of mercerizing:1. Increased gloss and brightness after mercerizing;2. The adsorption capacity, the chemical reaction capacity is enhanced, and the dye color yield is improved;3. Shrinkage rate, dimensional stability, and fabric flatness improved;4. Mechanical properties such as strength and Read More
How to wash off the dyeing of fluorescent fabric clothes?How to wash off the dyeing of fluorescent fabric clothes? It is difficult to deal with clothes being dyed, and clothes of different colors must be washed separately! It is made of high-grade FDY or DTY filament and combed pure cotton sand thre Read More
Why is the wet fastness and rubbing fastness poor when the reactive dyes dye the dark color of cotton? How to deal with it?(1) Reasons for poor fastness. Unlike direct dyes dyeing cotton, neutral (or acid) dyes dyeing nylon, disperse dyes dyeing polyester, reactive dyes dyeing cotton are not combine Read More
How to choose disperse dyes when dyeing nylon light colors with disperse dyes? Nylon/cotton fabrics are dyed lightly in color, and the nylon component is usually dyed with disperse dyes. The reason is: Disperse dyes do not contain water-soluble groups, do not ionize in water, and do not have activ Read More
What is Chelating dispersant and its application? Chelating dispersant is a highly efficient and versatile organic chelate. It can soften water, has strong chelating power and scum dispersing power to metal ions such as Ca2+, Mg2+, Fe3+, and prevents sedimentation during dyeing and finishing. The fo Read More
Advantages and precautions of oily waterproofing agentThe main features of oily waterproof:1. No need to heat, suitable for objects that require waterproof treatment but cannot be heated and dried.2. The storage is stable and will not be invalid or reduced in efficiency due to long-term storage.Perf Read More
