Recently, the 1,000 tons transesterification process of diethyl carbonate produced by Chaoyang Chemical Factory in Tangshan City has been successfully developed and put into industrial trial production. The product quality of diethyl carbonate reaches more than 99.5% (capillary column gas chromatographic inspection). Cogeneration of ethyl methyl carbonate products. The annual production capacity of 3,000 tons of solid phosgene co-production of diethyl carbonate has been completed in the pilot test, and is expected to reach the scale of 3,000 tons/year by the end of 2003. Transesterification Diphenyl carbonate process has been completed a small test.
According to reports, diethyl carbonate is mainly used as a solvent for nitrocellulose, cellulose ethers, synthetic resins and natural resins, as well as intermediates for pyrethroids and phenobarbital. Used in the instrumentation industry for the manufacture of fixed paints for cathode coatings in electronic tubes. Methyl ethyl carbonate as a solvent for special flavors and intermediates can also be used as a lithium battery electrolyte solvent. Diphenyl carbonate is mainly used as a synthetic raw material for engineering plastics, polycarbonates, and poly-parabens, as well as a plasticizer and solvent for nitrocellulose. In addition, it can also be used as a solvent and a heating medium in chemical production. Bis(trichloromethyl)carbonate, also known as triphosgene and solid phosgene, is a new type of solid compound and has extremely wide applications in medicine, pesticides, dyes, organic synthesis, and polymer materials.
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