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METHOD FOR PRODUCING 1,2,3,4-TETRACHLOROHEXAFLUOROBUTANE AND METHOD FOR PURIFYING 1,2,3,4-TETRACHLOROHEXAFLUOROBUTANE
METHOD FOR PRODUCING 1,2,3,4-TETRACHLOROHEXAFLUOROBUTANE AND METHOD FOR PURIFYING 1,2,3,4-TETRACHLOROHEXAFLUOROBUTANE
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机译:制备1,2,3,4-四氟六氟硼烷的方法和纯化1,2,3,4-四氟六氟硼烷的方法
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摘要
Disclosed is a method for producing 1,2,3,4-tetrachlorohexafluorobutane, which is characterized in that 1,2,3,4-tetrachlorobutane is reacted with fluorine in the presence of a solvent containing hydrogen fluoride. The 1,2,3,4-tetrachlorobutane may be obtained by chlorination of 3,4-dichlorobutene-1. Also disclosed is a method for purifying the thus-obtained 1,2,3,4-tetrachlorohexafluorobutane. This method enables to commercially efficiently produce 1,2,3,4-tetrachlorohexafluorobutane, which is useful as a synthesis material for hexafluoro-1,3-butadiene that is used, for example, as an etching gas for semiconductors, by using 1,2,3,4-tetrachlorobutane which has been conventionally discarded as a by-product of chloroprene.;COPYRIGHT KIPO & WIPO 2010
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