Dye intermediates are key raw materials for synthesizing dyes. The upstream industry is petrochemical, and the price of petrochemicals directly affects the procurement cost of the industry. In recent years, the decline in oil prices has reduced the production cost of dye intermediates. However, due to factors such as the epidemic and environmental protection, the supply is relatively tight, and the prices of some dye intermediates such as disperse dye intermediates have skyrocketed. In the downstream industry, affected by environmental protection, the supply of dyestuffs has shrunk, prices have risen, and the income of the dyestuff industry has increased. In the printing and dyeing industry, the management efficiency has declined due to rising costs.
Dye intermediates generally refer to various aromatic derivatives used in the production of dyes and organic pigments, and are important raw materials for synthesizing dyes. Aromatic hydrocarbons such as benzene, toluene, naphthalene, and anthracene from the coal chemical industry and petrochemical industry are used as basic raw materials, and dye intermediates are prepared through a series of organic synthesis.
With the development of the chemical industry, the application scope of dye intermediates has been extended to the pharmaceutical industry, pesticide industry, explosives industry, information recording material industry, and production sectors such as auxiliaries, surfactants, fragrances, plastics, and synthetic fibers.
There are varieties of dyestuff intermediates, hundreds of which are more important. There are four main categories of benzene-based intermediates, toluene-based intermediates, naphthalene-based intermediates, and anthraquinone-based intermediates.
In addition, there are some heterocyclic intermediates. The reaction processes commonly used in producing intermediates mainly include nitration, sulfonation, halogenation, reduction, amination, hydrolysis, oxidation, condensation, etc. The synthesis of an intermediate with a complex structure often requires many unit processes. Sometimes different base materials and different synthetic routes can be used.
The upstream industries of the dyestuff manufacturing industry are petrochemical, coal chemical, and basic chemical industries. Among them, the petrochemical industry provides raw materials such as benzene and aromatic derivatives, the coal chemical industry provides important raw materials coal tar, and the basic chemical industry provides raw materials such as soda ash and nitric acid.
Petrochemical, coal chemical, and basic chemical industry are important pillar industries and basic industries of the national economy, occupying a very important position in the national economy. At present, China has become a major producer and consumer of the above industries.
Dye intermediates, as semi-finished products, are located in the middle and upper reaches of the industrial chain. The downstream industries are mainly the dye industry, printing and dyeing processing, garment industry, etc.
AOLISENCHEM produces various chemical intermediates and can provide customized services. The services include sales, synthetic route design, R&D, and manufacturing, and products include pharmaceutical intermediates, agrochemical intermediates, pharmaceutical intermediates, dye intermediates, and active pharmaceutical ingredients. If necessary, you are welcome to consult us.