Process for preparing conjugate diolefins, and means...

Details Process for preparing conjugate diolefins, and means... Process for preparing conjugate diolefins, and means...

C - Chemistry, Metallurgy

08

F

402/400, 402/429

C08F 4/52 (2006.01) C08F 36/02 (2006.01) C08F 36/04 (2006.01)

Patent

CA 1205446

PROCESS FOR PREPARING CONJUGATE DIOLEFINS, AND MEANS SUITABLE FOR THIS PURPOSE. ABSTRACT OF THE DISCLOSURE A new process is described for polymerising and copolymerising conjugate diolefins characterised by the use of a catalytic system comprising at least one compound of Group III B of the periodic system, at least one non-halogenated aluminium alkyl, at least one compound containing one or more hydroxyls of acid or neutral type, and possibly an inorganic compound containing Cl or Br in ionisable form or an organic halogen derivative. The new process allows the preparation, both in the absence and in the presence of an inert diluent, of polydiolefins of essentially entirely 1,4-cis structure which even in the absence of a purification stage contain a very small quantity of catalytic residues.

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