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| 專利名稱 | 1,4-bis(bromodifluoromethyl) tetrafluorobenzene and producing method thereof | | 專利證號 | US7868213B2 | | 國別 | 美國 | | 獲證日期 | 2011-01-11 | | 專利摘要 | A method for producing 1,4-bis(bromodifluoromethyl)tetrafluorobenzene (BFTFB) is disclosed. The target compound is predicted as a very potent monomer for low dielectric constant material. This method comprises the following steps: (a) mixing 1,4-bis(bromodifluoromethyl)tetrafluorobenzene (DFMTFB), a bromination agent, and a solvent (with or without) to form a mixture; (b) heating the mixture under UV radiation; and (c) purifying the resultant to obtain 1,4-bis(bromodifluoromethyl)tetrafluorobenzene (BFTFB) with high purity. | IPC國際分類號 | C07C002200 | C07C001720 |
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