公开(公告)号：US5346594A

公开(公告)日：1994-09-13

申请号：US2765

申请日：1993-01-12

Applicant: Paul Lechaude ,  Gilles Darago ,  Philippe Krafft ,  Jean-Pierre Catinat

Inventor： Paul Lechaude ,  Gilles Darago ,  Philippe Krafft ,  Jean-Pierre Catinat

IPC: C07C17/38 ,  C07C17/395 ,  C07C19/08 ,  B01D3/34

CPC classification number: C07C17/395

Abstract: A process for purification of crude, 1,1-dichloro-1-fluoroethane includes the steps of treating a mixture of crude, 1,1-dichloro-1-fluoroethane and hydrogen fluoride with chlorine in the presence of a Lewis acid, and distilling to recover purified 1,1-dichloro-1-fluoroethane, wherein hydrogen fluoride is present during the treatment with chlorine at a ratio of at least 5% by weight with respect to the mixture of crude, 1,1-dichloro-1-fluoroethane and hydrogen fluoride.

Abstract translation: 粗制1,1-二氯-1-氟乙烷的纯化方法包括在路易斯酸存在下处理粗制1,1-二氯-1-氟乙烷和氟化氢与氯的混合物的步骤，并蒸馏 回收纯化的1,1-二氯-1-氟乙烷，其中在氯处理过程中氟化氢的存在比例相对于粗制1,1-二氯-1-氟乙烷的混合物为至少5重量％ 和氟化氢。