Latest News and Updates on Textile Auxiliaries and Dyes

Pad dyeing is to immerse the fabric in the dye solution for a short period of time (usually a few seconds or tens of seconds), and then immediately press it with a roller to squeeze the dye solution into the tissues and gaps of the fabric, while rolling away the excess The dye liquor makes the dye e Read More

Detailed introduction about direct dyesDirect dyes are dyes that can be heated and boiled in neutral and weak bond phase media without the help of mordants. Direct dyes are formed by the hydrogen bonding van der Waals force between the direct dye and cotton fiber. Mainly used in fiber, silk, cotton Read More

Un colorante es un compuesto orgánico que al aplicarlo a un sustrato (generalmente una fibra textil pero también a cuero, papel, plástico o alimento) le confiere un color más o menos permanente. Un colorante se aplica en disolución o emulsión y el sustrato debe tener cierta afinidad para absorberlo. Read More

① Cotton fiber burns when it encounters a fire. It burns quickly and produces a yellow flame with an odor; it has a slight off-white smoke, which can continue to burn after leaving the fire. After the flame is blown out, there are still sparks that continue to burn, but the burning time is not long; Read More

What is the role of fixing agent in fabric fixing?Fixing agent can be used to improve the color fastness of dyes on fabrics. It can form insoluble colored substances with dyes on the fabric to improve the washing and perspiration fastness of the color, and sometimes the light fastness. In the catego Read More

When it comes to the detection of fluorescent whitening agents, the first thing everyone thinks of is to use a currency detector to irradiate it, which is the ultraviolet lamp method. Since the principle of the fluorescent whitening agent is that the blue light excited by the ultraviolet light neutr Read More

1 Sampling and pretreatment The key steps to identify the types of dyes on cellulose fibers are sampling and sample pretreatment. When taking the sample, the part of the same dye should be taken. If the sample contains several shades, each shade should be taken. If fiber identification is required, Read More

Fixing principle of fixing agentThe current fixing agents can be roughly divided into cationic polymer type fixing agents, resin type fixing agents (containing formaldehyde resin type fixing agents, containing polyamine resin type fixing agents), and crosslinking reaction type fixing agents.The fixi Read More

Let us first understand the fluorescent brightener. It is a type of fluorescent dye, which belongs to a separate category in the Colour Index (C.I.). The molecular structure of fluorescent whitening agent is mainly composed of a continuous conjugated system containing an aromatic ring and one or mor Read More

Application of Disperse Dye Leveling Agent in DyeingDisperse dyes are mainly used in the dyeing of hydrophobic fibers such as polyester, spandex, nylon, and acetate fibers. With the continuous progress of fiber dyeing technology, various types of levelling agents have been developed by leaps and bou Read More

1 Sampling and pretreatment The key steps to identify the types of dyes on cellulose fibers are sampling and sample pretreatment. When taking the sample, the part of the same dye should be taken. If the sample contains several shades, each shade should be taken. If fiber identification is required, Read More

El colorante índigo es una tintura de color azul (ver índigo). El compuesto químico constituyente del índigo es la indigotina.En la antigüedad el colorante natural índigo se extraía de diversas especies de plantas, como también de especies animales como el caracol Hexaplex trunculus, pero actualment Read More