[Chemical Knowledge]：Properties, uses, upstream and downstream raw materials, storage methods, synthesis of isohexylene glycol

Isohexanediol Properties

Isohexanediol (2-methyl -2, 4-pentanediol, referred to as MPO) is a colorless transparent liquid, the chemical formula is C6H14O2, molecular weight of 118.17g/mol. It has a high boiling point (about 198°C) and low volatility, which gives it stability in a variety of applications. Isohexanediol has good solubility and is miscible with water and a variety of organic solvents, such as ethanol, ethylene glycol and phenol. Its low toxicity and relatively low vapor pressure make it a safe choice for many industrial applications.

Isohexanediol use

Isohexanediol has a wide range of applications in multiple industries. In the coating industry, it is used as a solvent and plasticizer to manufacture various paints and coatings to improve their fluidity and flexibility. In the cosmetics industry, isohexanediol is used as a humectant and emulsifier in lotions, creams and hair care products to improve their texture and stability. In the textile industry, it is used as a softener and lubricant to improve the softness and durability of textiles. In addition, isohexanediol is also used as an intermediate in organic synthesis and is widely used in the synthesis of pharmaceuticals and pesticides.

Upstream raw materials

The production of isohexanediol depends mainly on ethylene and propylene, which can be obtained by petroleum cracking or steam reforming of natural gas. The specific production process generally comprises the steps of producing ethyl isobutyl ketone by the carbonylation reaction of propylene and then converting the ethyl isobutyl ketone to isohexanediol by a hydrogenation reaction. The process requires the use of nickel or platinum as a catalyst and is carried out at high temperature and pressure. Some processes may also involve alcoholization reactions and separate purification steps to improve the purity and yield of the final product.

Downstream Products

As an important chemical intermediate, isohexanediol is widely used in the production of various downstream products. For example, in the polyurethane industry, it is used as a raw material for polyols to produce flexible and rigid foams, coatings, adhesives and elastomers. In the plastics industry, isohexanediol is used as a plasticizer to improve the flexibility and durability of plastics. It is also used in the production of lubricating oil, brake fluid and antifreeze and other products, providing excellent wear resistance and low temperature performance.

Isohexanediol storage method

Due to the relatively stable chemical properties of isohexanediol, storage conditions are relatively simple. It should be stored in a dry, well-ventilated environment, avoiding contact with strong oxidants, acids and bases to prevent chemical reactions. Storage vessels shall be stainless steel, aluminium or tanks lined with anti-corrosion coatings to prevent corrosion and contamination. Isohexanediol should be kept sealed during storage to prevent moisture absorption and oxidation, and ensure product quality and stability. During transportation, safety measures such as leak-proof, fire-proof and explosion-proof shall be taken to ensure safe transportation.

Market demand and development trend

With the acceleration of industrialization and urbanization, the market demand for isohexanediol is increasing. In particular, the development of downstream industries such as coatings, cosmetics and polyurethane has promoted the market demand for isohexanediol. With the enhancement of environmental awareness and increasingly stringent regulations, low-toxicity and environmentally friendly chemical products have received more and more attention and favor. Isohexanediol has a good market prospect due to its low toxicity and versatility.

Production Process Improvement and Innovation

In recent years, with the advancement of technology and continuous improvement of the process, the production efficiency and product quality of isohexanediol have been significantly improved. The application of new catalysts and reaction processes makes the production process more efficient and environmentally friendly. For example, the improvement of the catalyst not only increases the reaction rate, but also reduces the formation of by-products, thereby improving the purity of the product. The optimization of the process and the improvement of the degree of automation also reduce the production cost and energy consumption, and improve the competitiveness of enterprises.

Environmental and safety considerations

In the production and use of isohexanediol, environmental and safety issues must be paid great attention. Waste gas, waste water and solid waste generated in the production process should be strictly treated to prevent pollution to the environment. Enterprises should strengthen safety management, formulate and implement strict safety operation procedures to prevent the occurrence of fire, explosion and leakage accidents. Safety training for operators to improve their safety awareness and emergency response capabilities is also an important measure to ensure production safety.

Conclusion

As an important chemical product, isohexanediol has broad application prospects and market demand. In the future development, through technological innovation and process improvement, improving production efficiency and product quality, while paying attention to environmental protection and safety management, will further promote the healthy development of the isohexanediol industry. Enterprises should grasp market opportunities, actively respond to challenges, and constantly enhance their competitiveness to achieve sustainable development.