Method for recovering and separating unsaturated fluorinated hydrocarbons

A process for recovering and upgrading unsaturated fluorinated hydrocarbons, comprising the steps of:

• a) providing a foam M1 consisting of pores containing a composition C1 comprising at least one unsaturated fluorinated hydrocarbon;
• b1) optionally grinding or compressing said foam M1 provided in step a) to form a ground foam or a compressed foam;
• b2) optionally recovering at least a portion of said composition C1 released during step b1), wherein released composition C1 is in a gaseous phase;
• c) depolymerizing or dissolving said foam M1 provided in step a) or said ground or compressed foam obtained in step b1);
• d) recovering at least a portion of said composition C1 released during step c), wherein released composition C1 is in a gaseous phase, and optionally mixing it with said at least a portion of the composition C1 recovered in step b2) to form a stream A comprising at least one unsaturated fluorinated hydrocarbon;
• and
• e) recovering and separating said stream A formed in step d) into a plurality of streams of which at least one stream B1 comprises said at least one unsaturated fluorinated hydrocarbon.