Latest News and Updates on Textile Auxiliaries and Dyes

The recent overseas situation is not optimistic. BASF declared force majeure, Mitsui Chemicals closed its factories, and the supply of various chemicals plummeted.BASF: The 400,000-ton/year MDI unit at the Geismar plant in North America suffered from an unexpected equipment failure that affected the Read More

1. Methods and ways to improve the color fixing rateImproving the fixation rate of reactive dyes can be considered from the selection of dyes and the dyeing process: dyes with high directness and low reactivity have a large amount of adsorption by fibers and are not easy to be hydrolyzed. Fixation r Read More

2.2 Factors affecting color fastnessDyeing fastness refers to the ability of dyed products to maintain their original color and luster under the action of external factors during use or post-dyeing processing.There are many factors that affect the color fastness, mainly including the chemical compos Read More

①Innumerable products of any type of dye have been developed, but not many products are suitable for the commercial market. If the global dye companies that are suitable for commercialization are competing to imitate them, some of them only slightly change the chemical structure of the dye in order Read More

(1) Physical properties of disperse dyes:Wetting, dispersibility, particle fineness, dispersion stability, etc. These properties will affect the preparation of the dye solution and are the main factors for the formation of dyeing spots.(2) High temperature dispersion stability of disperse dyes:Repre Read More

1. Water inlet and liquid level control before the fabric is put into the tank During airflow dyeing, before the fabric enters the tank, the water inlet valve is first opened through the control system to enter the water. The amount of water entering is automatically controlled by the electrical con Read More

Light fastness Sunlight has wave-particle duality, and the sunlight that transfers energy in the form of photons has a strong impact on the molecular structure of the dye. When the basic structure of the coloring part in the dye structure is destroyed by photons, the color of the light emitted by th Read More

According to the review of freight forwarders in some markets, as well as the newly launched price increase notices of many shipping companies, sea freight in Southeast Asia is beginning to take off! It is reported that the reason for the surge may be related to the cancellation of multiple flights Read More

In the polyester dyeing process, the heating rate, the holding temperature and the pH value of the dyeing bath have a greater impact on the dyeing quality. Theoretically, under the condition of ensuring that the fabric does not appear colored, the shorter the dyeing process, the lower the dyeing cos Read More

Nylon is a thermoplastic fiber. Therefore, the dyeing rate of the fiber has a great relationship with the temperature, and the dyeing temperature must be higher than the glass transition temperature of the fiber (35～50℃). Nylon fiber starts to absorb dyes at 40℃. As the temperature rises, the dyeing Read More

1. Solubility High-quality reactive dyes have good water solubility in commercial applications. The solubility and the concentration of the dye solution are related to the selected bath ratio, the amount of electrolyte added, the dyeing temperature and the amount of urea and other factors. The react Read More

Unreasonable formulation of the process or improper operation produces color fretting;The process is unreasonable (for example, the temperature rises and falls too fast)Poor operation, knotting during dyeing, and power outage during dyeing;The temperature rises too fast and the heat preservation tim Read More