Development of dye industry

China total production of dye industry is 917,200t in 2014, it is 70% of total world production, which 78.15% products are mainly used for consumption in the domestic market. Now, Chinese dyestuff industry basically reaches balance of supply and demand. In 2014, domestic high-end dyes increase, import demand decrease.

According to customs statistics, the national dyes import 25100 tones from January to September in 2014. Among them, the sulfur dyes and sulphur black reduced more.

With the rapid development of economic in recent years, the optimize of the industrial structure is also apparent in the textile industry in China, and three end-product consumption structure of fiber are more reasonable. In 2011, the percentage of fiber consumption of three end products in clothing, household and industrial is 49:30:21. Application of dyestuffs in China has a rapid expand, the demand increased rapidly in home textile, automotive interiors, industrial textile market areas, and so on. For textiles and fabrics in these areas, certain aspects of the staining requirement is particularly high, such as curtains, automotive interiors for dye fastness requirements are very stringent. As a result, some niche specialization of dye products market will develop rapidly, they will access to a broader market spaces with the rise of home textile, automobile Interior textiles market.

China dyestuff exports mainly in South-East Asia, disperse dye is the main export dye. 95,000 tons disperse dye are exported in 2005, ranking first in the various types of dyes. This shows China disperse dyes in the international market has a strong competitive. At present, the dye quality and variety still has a gap compared with developed countries.

In order to adapt to the international market situation and change the disadvantage in the market competition, the dyes company all over the world are more focused on research and development of dye. Environmental protection issues have become the focus of world attention, States increasingly high standards for environmental protection, for some carcinogenic dyes and allergic dyes have been banned or restricted production and application, and are actively looking for alternative species.

Especially American and European countries have passed stringent product standards. This trend for dyestuffs in China to compete in the international market on the one hand put forward higher requirements; on the other, the banned low-end products provide a broader market spaces for environmental protection and other competitive products. More information, please click here!

Something about dyes

Dye is the substance that is able to make fibers and other materials coloring. Dyes are colored substances, but color material is not necessarily a dye. Dye is able to make a certain color attached to the fibers of the material, and they are usually soluble in water, some dyes require a mordant agent to make a dye adhered on fiber. Archaeological data shows that dyeing technology has over 5,000 years of history in the Middle East and India. But that time of dye came from the flora and fauna or minerals with very little processing.

In 1856, Perkin invented the first synthetic dye purple ponytail to make the organic chemistry identified a new discipline - chemical dyes. In the 1950s, Pattee and Stephen found that dye contains Dichloro-triazine groups bonded with the hydroxyl groups of fibers in alkaline conditions. It marked dyes make fibers colored development from physics process to chemical processes, creating a synthesis application time of reactive dyes. Dyes are not only used in the dyeing and printing of textiles, but also applied to paint, plastic, leather, optical communications, food and many other sectors.

Dyes can be divided into the following categories according to application:

1. Direct dye Such dyes and fibers combined with Vanderbilt and hydrogen bonding between molecules, molecules containing sulfonic acid groups, carboxyl and soluble in water. It exsit in water as anionic form, and can make fiber dyed directly.

2. Acid dyes In acidic medium, the dyes molecules containing sulfonic acid groups, carboxyl and amino of protein fibers bonding by ionic. It mainly for the protein fibers (wool, silk, leather) staining.

3. Disperse dyes Small soluble and using dispersants to make hydrophobic fibers (polyester, nylon, etc) staining.

4. VAT dyes VAT dyes are divided into insoluble and soluble two kinds. Insoluble dye can vat into soluble in alkaline solution, oxidation to make the dyeing resumed its insoluble in fibers, then the fibers coloring. Soluble do not need the restore step. This dye is mainly used for dyeing and printing of cellulose fibers.

5. Reactive dyes Dye molecules exist groups that can have chemical reactions with of hydroxyl and amino of fiber molecules. Mainly used for dyeing of cotton, linen, synthetic fiber, as well as the colouring of the protein fibers.

6. Cationic dyes Used for the dyeing of acrylic fibers. It often incorporated into the basic dye class.

7. Azoic dyes It is a insoluble azo dye. It is dyed in freezing conditions（0-5℃）. Click here to get more!

Dye and textile industry

The textile industry is a global industry. As we know, textile industry provides one of the most fundamental necessities of the people, for they processing and manufacture clothes, garments, denim, leather, fabric, technical textiles and home textile that we need. No doubt that it plays a significant role in shaping the industry's development.

The textile industry has been in existence for centuries in many countries, such as China, India, etc. The textile industry need large water resources and energy consumption. About 60% of energy consumption in textile washing step during textile processing. Utilization of water resources, industry requirements dyeing, fabric energy consumption up to 200 liters of water per kg level. In addition, the industry also requires increased use of water and energy saving new technology, such as rope dyeing, foam processing, dyeing liquid recycling and application of digital printing technology.

The market trends of textile chemicals are close to textile manufacturing industries. Currently, textile chemicals are divided into two categories: dyes and auxiliaries. market for high quality textile products and industrial fabrics market demand growth. They occupy a more important market share of textile chemicals market. At present, the United States, the European textile market increasing demand for high quality products, India textiles export is growing, India Textile auxiliaries market due to the growing scale of textile exports is growing.

In recent years, our country pay a highly attention to dye industry of pollution problem. some pollutants emissions not reach the standard of enterprise will be eliminated in the competition, environmental enterprises are expected to be benefit from this. So many enterprises work to create environmentally friendly textiles. In fact, green supply chain is green manufacturing, and green manufacturing based on chemical control. At present, accounting for about 1/4 of the chemicals used in the textile industry, while China accounted for the amount of 45% in the global textile chemicals, alarming volume determines the priority is set to effectively identify the usage of chemicals in the supply chain traceability system in order to improve chemicals management capacity.

Auxiliaries are used in textile printing and dyeing. It can enhance the effect of printing and dyeing, including printing auxiliaries and dyeing auxiliaries. And printing auxiliaries include thickeners, adhesives, cross-linking agent, emulsifiers, dispersant additives and other printing auxiliaries. In recent years, the production and development of China dyes, additives and organic pigment industry are healthy and rapidly. The rapid development of textile industry has greatly increased demand for textile chemicals in dye, the dye industry and the textile industry relies on means of dyestuff industry in China has a huge market. More information, please visit our web OKCHEM.