Preparation of olefinc-aromatic feeds for solvent extraction

Claim 1

PROCESS FOR SELECTIVELY REMOVING REACTIVE DIENES AND TERTIARY ALKENES FROM A C5 TO C8 HYDROCARBON FRACTION IN WHICH THEY ARE PRESENT WITH CYCLIC DIENES, PRIMARY ALKENE AND AROMATIC HYDROCARBONS, WHICH COMPRISES HEATING THE FRACTING AT ABOUT 80 TO 120*C. TO SELECTIVELY DIMERIZE THE CYCLIC DIENES, DISTILLING UNREACTED ACYLIC DIENES, ALKENE AND AROMATIC COMPONENTS FROM THE DIMERIZED CYCLIC DIENES, REMOVING COMPONENTS LOWER BOILING THAN 38*C . FROM THE DISTILLED COMPONENTS BY FRACTIONATION SELECTIVELY POLYMERIZING TERTIARY ALKENES AND ACYCLIC DIENES IN SAID DISTILLED AND FRACTIONATED COMPONENTS BOILING ABOVE 38*C. MIXED WITH 0.25 TO 2 WT. PERCENT ALCL3 AT -10 TO 70*C. UNTIL 1 TO 10WT. PERCENT OF THE ACYCLIC DIENES REMAIN UNREACTED, STOPPING THE POLYMERIZING BEFORE MORE THAN 20% OF PRIMARY ALKENES PRESENT ARE REACTED, THEN DISTILLING THE REMAINING UNREACTED AROMATIC, ACYCLIC DIENEAND ALKENE COMPONENTS FROM HIGHER BOILING POLYMERS AND RESINS FORMED FROM THE TERTIARY ALKENES AND THE DIENES.