Process for preparing conjugate diolefins, and means suitable fo

Details Process for preparing conjugate diolefins, and means suitable fo Process for preparing conjugate diolefins, and means suitable fo

1983-04-14

1985-06-25

Michl, Paul R.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526 98, 526100, 526137, 526138, 526142, 252429R, 252429B, 252430, C08F 552

Patent

active

045255490

ABSTRACT:
A new process is described for polymerizing and copolymerizing conjugate diolefins characterized 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 ionizable 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.

REFERENCES:
patent: 3803053 (1974-04-01), Yoo
patent: 4242232 (1980-12-01), Sylvester
patent: 4299937 (1981-11-01), Columberg
patent: 4384982 (1983-05-01), Martin

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