IMPROVED PROCESS FOR THE PREPARATION OF DICHLORO BUTENES BY CHLORINATION OF BUTADIENE

摘要

1276788 Dichlorobutenes DISTUGIL 9 April 1970 [9 April 1969] 17022/70 Heading C2C 3,4 - Dichloro - butene - 1 and 1,4 - dichlorobutene-2 are prepared by mixing chlorine and gaseous butadiene in a reactor, withdrawing a part of the hot mixed gases and returning it to the reactor with fresh chlorine and butadiene so that the reactor temperature is maintained at 240-300‹ C. The reacting gases are preferably introduced through a nozzle into which compressed chlorine and butadiene are passed concentrically. Excess butadiene may be separated from the product stream and recycled and preheated by a compressor.