Process for the removal of olefinic impurities from...

Details Process for the removal of olefinic impurities from... Process for the removal of olefinic impurities from...

C - Chemistry, Metallurgy

07

C

C07C 17/38 (2006.01) C07C 17/395 (2006.01)

Patent

CA 2058278

HOE 90/F 377 Abstract of the disclosure: Process for the removal of olefinic impurities from hydrochlorofluorocarbons The invention relates to a process for the removal of olefins of the formula CnHxFyAz, in which A is chlorine and/or bromine and n is a number from 2 to 4, x and y are each a number from 1 to 6 and z is a number from 1 to 4, the sum of x+y+z being aqual to 2n, from hydrochloro- fluorocarbons of the formula CzHmFpAq, in which A is chlorine and/or bromine and m and p are each a number from 1 to 5 and q is a number from 0 to 4, the sum of m+p+q being equal to 6, which comprises reacting the hydrochlorofluorocarbons C2HmFpAq which are contaminated with the olefins mentioned, in the presence of oxygen- containing phase-transfer catalysts with complex hydrides and/or strong bases.

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