It is used as a surface penetrating agent and bridging agent in cleaning agents. It has a very low surface tension and can be used as a miscible bridging agent for grease and non-pearlescent pigment compatible polar solvents such as water and isopropyl alcohol. (For example, if you pour isopropyl alcohol and white electric oil together directly, you will find that they are incompatible with each other and clearly separated into separate layers. However, if you add BCS, the separation will disappear and the two will dissolve into a clear solution, which can both dissolve each other and reduce surface tension. There are also water-soluble organic solvents with excellent defoaming effects, which are effective in cleaning oil stains.
A good high-boiling point solvent; used as a solvent and colorant; in metal surface treatment, used as a metal cleaning agent to remove oil, paint and other contaminants; cleaning agent for integrated circuits and electronic components; pesticide dispersant; organic synthesis Intermediate; mild, non-irritating household liquid detergent; fiber wetting agent; colorless liquid of resin plasticizer. Melting point -68.1℃, boiling point 230.4℃, relative density 0.9536 (20/20℃), refractive index 1.4258 (27℃), 1.4321. Flash point 100℃. Easily soluble in alcohol and ether, soluble in water and oil. It is mainly used as a solvent for coatings, dyes, resins, etc. It is also used as an intermediate for plasticizers and a diluent for hydraulic brake fluids.
Uses and features
Purpose 1]
Due to its higher boiling point and lower volatilization rate, ethanol can be used as a solvent for paints, inks, resins, etc. It can dissolve grease, dyes, resins, nitrocellulose, etc., and is also used in organic synthesis.
[Purpose 2]
Diethylene glycol butyl ether (112-34-5) is mainly used as a solvent in coatings, dyes, resins, etc. It is also used as an intermediate for plasticizers and a diluent for hydraulic brake fluids. In addition, it is also used to produce piperonyl butoxy compounds.
[Purpose 3]
Diethylene glycol butyl ether (112-34-5) is mainly used as a solvent for coatings, printing inks, stamp pad inks, oils, resins, etc. It can also be used as metal detergents, paint removers, and strippers. Lubricants, car engine detergents, dry cleaning solvents, epoxy resin solvents, pharmaceutical extractants; used as stabilizers for latex paints, evaporation inhibitors for aircraft coatings, surface processing improvers for high-temperature baking enamels, etc.
[Purpose 4]
Solvent for nitrocellulose, varnish, printing ink, oil, resin, etc. Plastic intermediates
Industry development opportunities and challenges
Foreword
Ethylene glycol ether is produced by the catalytic reaction of adding corresponding alcohols to ethylene oxide. Therefore, the ethylene glycol ether molecule contains the structure of both ether and alcohol, and has good solubility properties of alcohol and ether. It is a Excellent solvent, widely used in coatings, inks, electronic cleaning and other industries. According to Zhuochuang statistics, China’s designed glycol ether production capacity reached about 240,000 tons in 2019, industry output was about 117,250 tons, actual downstream demand was about 298,300 tons, and ethylene oxide consumption was about 50,000 tons. Although domestic production is far less than downstream demand, the gap in imported supply is supplemented. With the continuous development of downstream water-based coatings and electronics industries, the glycol ether industry still has good development prospects. However, at the same time, competition between domestic and imported products is intensifying, and 2020 will face severe challenges. Given the current economic development situation, what will be the development of China’s glycol ether industry?
Development opportunities and challenges
Ethylene glycol butyl ether series products have the highest weight among glycol ethers. The designed production capacity of ethylene glycol butyl ether series products is 100,000 tons, accounting for 43.47% of the industry. The cumulative output is about 59,500 tons, accounting for the industry share. Reaching 50.74%, the actual downstream consumption is about 227,300 tons, accounting for 76.19% of the industry. Therefore, most of the following analysis uses ethylene glycol butyl ether series products as examples.
Advantages and Opportunities: Maturity of Production Technology
Before 2000, most domestic manufacturers of glycol ethers still used the kettle-type intermittent homogeneous alkali catalytic reaction process. The catalysts used were mainly sodium alkoxides or potassium alkoxides. The reaction products were separated by continuous distillation devices to obtain qualified product. At present, the industry mostly uses continuous tubular reactors to produce glycol ethers. In the continuous tubular reaction, the reaction materials EO, ethanol (or methanol), and the configured catalyst solution enter the static mixer at the same time, and then enter the static mixer after mixing. In the tubular reactor, the materials enter the intermediate tank after reaction or directly enter the distillation tower for separation, and different fractions are collected as products. At present, the domestic glycol ether industry’s production technology has been highly matured. In terms of product quality, it is similar to imported goods, and its downstream acceptance is good.
