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Dyeing and production of sulphur black dyes
Sulphur Black dyes are insoluble in water. Sodium sulfide or other reductants are used to reduce the dyes to soluble leuco. Sulphur Black has affinity to the fibers, and after dyeing then oxidizes to restore their insoluble state and fix them on the fibers. So sulphur dyes are also a kind of VAT...Read more -
There are a lot of refractory dyes and toxic substances in sulphur black wastewater.
As we all know, sulphur black dye is an important sulphur dyes for textile especially for denim or jeans yarn dyeing. As the sulhpur black has advantages of low purchasing cost and easy operation, more and more users prefer to buy in bulk quantity. However, the dyeing wastewater contains more res...Read more -
Reasons for uneven dyeing of 310 Rhodamine B
In the dyeing of leather, cotton, linen, paper and other materials, a dye called Basic Rhodamine B is often needed. It belongs to a synthetic dye and is suitable for many industries. When using Basic Rhodamine B to dye material, uneven dyeing often occurs, so what is the cause? In order to ensure...Read more -
Reasons for brittleness of yarns dyed with sulphur black dyes
The reason for brittleness of yarn dyed with Sulphur Black dye is that Sulphur Black dye is a high molecular compound with unstable structure. It can be oxidized in air under certain temperature and humidity conditions and further reacts with water molecules in air to produce sulfuric acid. The a...Read more -
Basic Rhodamine B manufacturer take you understand performance of Rhodamine B
Rolling-drying-steaming process is a common process of Basic Rhodamine B. Urea is often used in this process, which brings many environmental problems. In addition, the application of Basic Rhodamine B is also affected by its migration, low fixation rate and high energy consumption. According to ...Read more -
Sorry ! Cationic blue dyes price increased by 3000RMB/TON, followed by Disperse dyes, reactive dyes!
Due to the rising raw materials in the upstream, environmental pressure and other factors, the cationic blue dyes in Cangzhou Xincheng Weiye Co., Ltd. (XCWY Chemical)have increased by 3000RMB/TON since this month. Varieties involved: » Cationic yellow X-GL 250% » Cationic Red X-GRL 250% » Cation...Read more -
Sulphur Black BR is insoluble in water, but can be reduced to dark color in sodium sulfide solution and dissolved.
The jeans made of Sulphur Black BR are very popular among young and middle-aged people because of their rough and unique style. The dyeing equipment we adopt adopts the method of continuous dyeing by warp axes, and the production process is relatively mature. Sulphur Black BR is insoluble in wate...Read more -
What is the use of Solvent Red 135?
Solvent Red 135 Application Solvent red 135 CAS 20749-68-2/71902-17-5, also known as transparent red with melting point 318 ℃, is a kind of high-grade plastic colorant which belongs to oil-soluble dyes. Its physicochemical properties are yellowish powder, insoluble in water. What is the use of So...Read more -
Pay attention to the taboo of using Rhodamine B to avoid affecting product performance
Basic Rhodamine B is a common industrial dyestuff, which has a wide range of applications. However, it can not be used as food additive because its components contain toxic substances. As a daily dyeing agent, Rhodamine B has the “taboo” for the use of the environment. In order to avo...Read more -
Sulphur Black BR wastewater is not untreatable, but its treatment process has special requirements.
Dyeing wastewater is produced in the production of Sulphur Black BR dyes, which has dark color, high concentration and large amount of water. If it is treated, it will cause serious pollution to the environment. At present, physical and chemical methods are used to treat printing and dyeing waste...Read more -
Professional basic rhodamine b manufacturer introduce drying methold for you
In the production process of Basic Rhodamine B, drying is an important link. The dried dyes can reach the standard set by users and enterprises. How about the drying method? In view of this problem, today we invite the technical staff of XCWY Chemical to introduce the specific details of Basic Rh...Read more -
Relevant Components of Environmental-friendly Sulphur Black Liquid Dyes
The environmentally friendly Sulphur Black Liquid dye is one of the substitutes for banned dyes, especially black. Commonly used sulfur dyes are not allergic dyes, carcinogenic dyes and acute toxic dyes. They do not contain heavy metals and adsorbable organic halides. They use less salt and consu...Read more
