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| 專利名稱 | Method and device for purifying 1,4-bis (bromodifluoromethyl) benzene | | 專利證號 | US7465841B2 | | 國別 | 美國 | | 獲證日期 | 2008-12-16 | | 專利摘要 | A method and a device for purifying 1,4-bis(bromodifluoromethyl)benzene are disclosed. In order to solve the problem of hard to purify and separate 1,4-bis(bromodifluoromethyl)benzene crude products, diphenylmethane that has a higher boiling point and does not interact with 1,4-bis(bromodifluoromethyl)benzene is mixed with the 1,4-bis(bromodifluoromethyl)benzene crude products for evaporation. Afterwards, the purity of the vaporized product is detected and only that reaching an expected purity is collected to obtain high-purity 1,4-bis(bromodifluoromethyl)benzene. | IPC國際分類號 | C07C001700 | C07C0017386 | B01D000308 | B01D000310 | B01D000500 | C07C001714 | C07C001738 | C07C001900 | C07C002100 | C07C002208 | C07C002300 | C07C002500 |
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