Manufacturer Dimethoxyethane CAS 534-15-6

Dimethoxy-ethane can be used as an intermediate in drug synthesis, and can also be used in the preparation of batteries such as lithium batteries and cleaning agents. An application example is as follows:

1) Preparation of ultra-low temperature discharge electrolyte and lithium ion battery, ultra-low temperature discharge lithium ion battery comprises a positive electrode, a negative electrode, a separator and an electrolyte, the electrolyte is lithium hexafluorophosphoric acid, lithium tetrafluoroborate and a mixture of solvents, the solvent including vinyl carbonate, dimethyl carbonate, methyl carbonate and dimethoxyethane. The weight ratio of sodium hexafluorophosphate and lithium tetrafluoroborate is between 1:5 and 10:1, and the concentration of composite salt formed by mixing lithium hexafluorophosphate and lithium tetrafluoroborate is 0.7 to 1.2 mol/L. Ethylene carbonate, dimethyl carbonate, methyl carbonate in proportion to the preparation, dimethoxy-ethane accounted for 0.5% ~ 10%. The total weight of lithium hexafluorophosphate, lithium tetrafluoroborate, vinyl carbonate, and mixtures of dimethyl carbonate and methyl carbonate. Compared with the prior art, the lithium-ion battery of the invention can work normally under -40℃ environment, has stable performance and excellent cycle index.

2) Prepare an efficient and pollution-free industrial water-based cleaning agent, which is composed of 40-45% tetramethoxypropane, 40-50% dimethoxyethane, 3-10% surfactant, 1-2.5% ethylenediamine tetraacetic acid, 1-2.5% o-xylene thiourea; Raw materials weighed by mass ratio: tetramethoxypropane 40-45%, dimethoxyethane 40-50%, surfactant 3-10%, ethylenediamine tetraacetic acid 1-2.5%, o-xylene thiourea 1-2.5% for use; The weighed tetramethoxypropane and dimethoxyethane were mixed evenly. C Add the surfactant ethylenediamine tetraacetic acid and weighed o-xylene thiourea into the mixed solution prepared in step B, stir fully and mix evenly to obtain an efficient and pollution-free industrial water-based total cleaning agent. The invention has the advantages of good cleaning effect, simple operation process, no damage to equipment materials, no adverse effect on catalysts, recyclable utilization, and no pollution to the environment.

3) Preparation of lithium-ion battery and ultra-low temperature discharge lithium-ion battery electrolyte. At present, there is no lithium-ion battery that can be powered down at ultra-low temperatures, with stable performance and excellent cycle performance. The invention is characterized that the electrolyte of the lithium-ion battery is composed of lithium hexafluorophosphate, triethoxyboron, low melting point additive and quaternary solvent. The low melting point additives are nitroethane and/or nitropropane, and the quaternary solvent consists of ethylene carbonate, dimethyl carbonate, methyl carbonate, and dimethoxy-ethane. Dimethoxy-ethane accounted for 0.8% ~ 10% of the total weight of the seasonal solvent. In the lithium-ion battery electrolyte, the concentration of lithium hexafluorophosphate is 0.8~1.3mol/L, the mass percentage of triethoxyboron is 0.2~8wt%, the mass percentage of low-melting point additives is 2~20wt%, and the mass percentage of quarterly solvents is 70~90wt%. The invention has the advantages of reasonable structure design, ultra-low temperature discharge and stable performance.

4) A fuel tail gas purification fusion agent is prepared. The raw materials of the fusion agent are as follows: 2.5-4.5% tert-butanol, 70-80% methanol, 15-20% toluene diisocyanate, 0.5-2.5% oleic acid, 1.5-3.5% dimethoxyethane, 0.5-2.5% paraffin, 0.5-2.5% naphthylamine by weight ratio. The preparation method was as follows: 3.5% tert-butanol was added into 17% toluene diisocyanate and fully stirred; Add 1.5% naphthylamine, stir well and let stand for 15-25 minutes; Add 1.5% oleic acid, 2.5% dimethoxy-ethane and 1.5% paraffin successively and stir for 10-20 minutes. The prepared components were added to 75% methanol and stirred for 25-35 minutes and left for 1.5-2.5 hours to get the finished product. The raw material of the invention is easy to obtain, does not pollute the environment, has the advantages of simple process and good cleaning effect.

5) Preparation of automobile ternary catalytic reactor maintenance agent, no need to disassemble cleaning. The ternary catalytic reactor is the most important external purification device installed in the automobile exhaust system. The failure of the ternary catalytic reactor is due to the high sensitivity of the catalyst to sulfur, lead, phosphorus, zinc and other elements. Sulfur and lead come from harmful substances in fuels; Phosphorus and zinc come from lubricants. The invention is composed of 30 ~ 60 parts according to weight