The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 23, 1993
Filed:
Dec. 13, 1991
Peter Hopp, Hofheim am Taunus, DE;
Rolf-Michael Jansen, Kelkheim, DE;
Hoechst Aktiengesellschaft, Frankfurt am Main, DE;
Abstract
The invention relates to a process for the removal of olefins of the formula C.sub.n H.sub.x F.sub.y A.sub.z, 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 equal to 2n, from hydrochlorofluorocarbons of the formula C.sub.2 H.sub.m F.sub.p A.sub.q, 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 C.sub.2 H.sub.m F.sub.p A.sub.q which are contaminated with the olefins mentioned, in the presence of oxygen-containing phase-transfer catalysts with complex hydrides and/or strong bases.