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公开(公告)号:EP1559702A1
公开(公告)日:2005-08-03
申请号:EP05000864.8
申请日:2005-01-18
申请人: Solvay S.A.
IPC分类号: C07C17/386 , C07C17/42 , C07C19/08
CPC分类号: C07C17/42 , C07C17/386 , C07C19/08
摘要: Method of manufacture of a hydrofluoroalkane comprising the use of a Lewis base as stabilizer of the hydrofluoroalkane.
In the method according to the invention, the Lewis base is preferably employed during purification of the hydrofluoroalkane, in particular during a distillation stage.摘要翻译: 包括使用路易斯碱作为氢氟烷烃的稳定剂的氢氟烷烃的制造方法。 在根据本发明的方法中,优选在纯化氢氟烷烃期间使用路易斯碱,特别是在蒸馏阶段期间。
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公开(公告)号:EP1754697A1
公开(公告)日:2007-02-21
申请号:EP05017930.8
申请日:2005-08-18
申请人: Solvay S.A.
IPC分类号: C07C51/093 , C07C53/21 , C07C53/15
CPC分类号: C07C51/093 , C07C53/21 , C07C53/15
摘要: Carboxylic acids can be prepared by reacting compounds comprising a -CCl 2 F group, a CCIF 2 group or a CCl 3 group with sulfur trioxide and sulfuric acid. The reaction is especially suitable for the preparation of 3,3,3-trifluoropropionic acid from CF 3 -CH 2 -CCl 2 F, CF 3 -CH 2 -CCIF 2 , CF 3 -CH 2 -CCl 3 or a mixture of one or two thereof as starting material. Usually, oleum is used as the source for sulfur trioxide.
In a preferred embodiment, the starting material comprises CF 3 -CH 2 -CCl 2 F and/or CF 3 -CH 2 -CCIF 2 which is or are prepared in a fluorination reaction between CCl 3 -CH 2 -CCl 3 and HF. As a source for CCl 3 -CH 2 -CCl 2 , the product of the reaction between CH 2 =CCl 2 and CCl 4 is advantageously used.摘要翻译: 羧酸可以通过使包含-CCl 2 F基团,CCIF 2基团或CCl 3基团的化合物与三氧化硫和硫酸反应来制备。 该反应特别适用于由CF 3 -CH 2 -CCl 2 F,CF 3 -CH 2 -CCIF 2,CF 3 -CH 2 -CCl 3或其混合物制备3,3,3-三氟丙酸 或其两个作为起始材料。 通常,使用发烟硫酸作为三氧化硫的来源。 在优选的实施方案中,原料包含在CCl 3 -CH 2 -CCl 3和HF之间的氟化反应中制备的或CF 3 -CH 2 -CCl 2 F和/或CF 3 -CH 2 -CClF 2。 作为CCl 3 -CH 2 -CCl 2的来源,有利地使用CH 2 = CCl 2和CCl 4之间的反应的产物。
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