Process for the conversion of boron trifluoride dimethyl ether complex to the boron trifluoride dialkyl ether complex
Patent 4371707 Issued on February 1, 1983. Estimated Expiration Date: 
December 15, 2000. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
December 15, 2000. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 2751285 2796330 2834717 2906771 InventorsApplicationNo. 06/216045 filed on 12/15/1980US Classes:568/6Sulfur, oxygen, halogen or Group IA or IIA light metal containingExaminersPrimary: Sneed, Helen M. S.Attorney, Agent or FirmInternational ClassesC07F 5/00 (20060101)C07F 5/02 (20060101) AbstractA process for the conversion of boron trifluoride dimethyl ether complex to boron trifluoride dialkyl ether complex substantially free of dimethyl ether impurities, which comprises reacting the boron trifluoride-dimethyl ether complex, in the liquid phase, in the presence of dialkyl ether wherein at least one of the alkyl groups contains at least two carbon atoms, in a restricted vapor equilibration region, while simultaneously sweeping the said vapor equilibration region with a substantially inert gas, and heating to distill off the dimethyl ether. High purity of the boron trifluoride dialkyl ether complex is attained with this method, with only minimal traces of the boron trifluoride dimethyl ether complex, dimethyl ether remaining. The preferred product is boron trifluoride diethyl ether.Other References
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