Side-chain chlorination of ethylpolychlorobenzenes

Claim 1

IN A METHOD OF CHLORINATION WHEREIN MOLECULAR CHLORINE AND AN ETHYLPOLYCHLOROBENZENE STARTING MATERIAL ARE INTERACTED TO FORM A SIDE-CHAIN CHLORINATED ETHYLPOLYCHLOROBENZENE, THE IMPROVEMENT THAT COMPRISES FEEDING A FLUID STREAM OF CHLORINE, AND A LIQUID STREAM OF THE ETHYLPOLYCHLOROBENZENE STARTING MATERIAL TO AN UPPER PART OF AN ELONGATED AND VERTICALLY DISPOSES REACTION ZONE CONTAINING A PERMEABLE BED OF ADSORBENT CARBON, THE RELATIVE RATES OF FEEDING SUCH STREAMS CORRESPONDING TO FROM 0.5 TO 2 WEIGHT-MOLES OF CHLORINE PER WEIGHT-MOLE OF ETHLYPOLYCH''OROBENZENE COMPOUND, INTERMNINGLING THE STARTING MATERIALS AND PASSING THE RESULTING MIXTURE AND THE PRODUCTS OF CHEMICAL INTERACTION THEREOF DOWNWARD IN NONFLOODING FLOW THROUGH THE PERMEABLE BED OF ADSORBENT CARBON, CONTACTING THE REACTION MIXTURE WITH THE ADSORBENT CARBON AT REACTION TEMPERATURES IN THE RANGE OF FROM 30* TO 150*C. TO OBTAIN CHEMICAL INTERACTION OF THE STARTING MATERIALS IN CONTACT WITH THE ADSORBENT CARBON, AND WITHDRAWING FROM THE LOWER PART OF THE REACTION ZONE A REACTION MIXTURE WHEREIN THE ORGANIC PRODUCT OF INTERACTION OF THE STARTING MATERIALS COMPRISES AT LEAST ONE SIDE-CHAIN CHLORINATED ETHYLPOLYCHLOROBENZENE COMPOUND AND IS SUBSTANTIALLY FREE OF ANY B,B-DICHLOROETHYLPOLYCHLOROBENZENE COMPOUND.