A process for the continuous substitutionary chlorination of mono-olefines

    公开(公告)号:GB906419A

    公开(公告)日:1962-09-19

    申请号:GB4241360

    申请日:1960-12-09

    Applicant: BASF AG

    Abstract: Mono-olefines containing 2-5 carbon atoms are chlorinated by substitution by reaction with chlorine in the gas phase at 250-600 DEG C. in the presence of a moving solid inert heat carrier, the chlorine and olefine being premixed and the mixture reacting in an upwardly moving stream in the presence of the heat carrier which also moves upwardly and which enters the reaction zone at 250-600 DEG C., the residence time of the reactants in the reaction zone being 0.05-5 seconds; separating the heat carrier and recovering the chlorination products. Preferred sets of conditions are the use of ethylene or propylene at 450-550 DEG C. and an olefine: chlorine ratio of 2-5:1; and the use of butene-2 at 350-550 DEG C. and a butene:chlorine ratio of 1-3:1. Other specified starting materials are butene-1, isobutene and pentene-2. In examples (1) ethylene gives vinyl chloride, vinylidene chloride and dichloroethylenes; (2) propylene gives allyl chloride, 1-chloropropene and 1,2-dichloropropane; and butene-2 gives 1,4-dichlorobutene-2, 1-chlorobutene-2 and 2,3-dichlorobutene.

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