Loading patent…
AssigneeAkademie der Wissenschaften der DDR
InventorsPeter Dietrich, Gunter Engler, Armin Ferse, Harald Grimm, deceased, Udo Gross, Dietmar Handte, Klaus Lunkwitz, Ulrich Muller, Dietrich Prescher, Jurgen Schulze
Estimating the term…
Straight chain perfluoroolefins compounds of medium length with terminal or double bonds and a minor proportion of trifluoromethyl side chains or mixtures of such perfluoroolefins with perfluoro paraffins of equal chain length and corresponding structure, the perfluoroolefins being present in the mixture in an amount of 40 to 70%. The compounds are valuable as highly reactive intermediate products in the production of surface active agents. The compounds are made by subjecting a highly fluorinated organic compound to degradation by means of a high energy radiation of a density of 0.3 to 3.0 W/cm.sup.2 effected in a radiation chamber which has been subjected to a preceding rinsing with an inert gas or with a monomeric highly fluorinated organic compound.
Straight chain perfluoroolefin compounds of medium chain length having terminal double bonds and only a minor proportion of trifluoromethyl side chains per se or in admixture with perfluoroparaffins of equal chain length and corresponding structure, the perfluoroolefin compounds being present in such mixture in an amount of from 40 to 70%.
A process for making straight chain perfluoroolefin compounds of medium chain length having terminal double bonds and only a minor proportion of trifluoromethyl side chains per se or in admixture with perfluoroparaffins of equal chain length and corresponding structure, the perfluoroolefin compounds being present in such mixture in an amount of from 40 to 70% which comprises subjecting a highly fluorinated organic compound to degradation by means of a high energy radiation of a density of 0.3 to 3.0 W/cm.sup.2 in a radiation chamber which has been subjected to a preceding rinsing with an inert gas or with a monomeric highly fluorinated organic compound.
Dependencies are inferred from the claim text.