Process for selective production of trans-1,4-polybutadiene

Details Process for selective production of trans-1,4-polybutadiene Process for selective production of trans-1,4-polybutadiene

1993-07-22

1994-09-20

Teskin, Fred

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526128, 526139, 526140, 526141, 526142, 526165, 526335, 502121, 502122, 502123, 502125, 502126, C08F 4649, C08F13606

Patent

active

053490347

ABSTRACT:
A catalyst for production of 1,4-polybutadiene which comprises
as the catalyst component (A) a transition metal compound represented by the formula M(R)l(OR')m X.sub.n-(l+m), wherein M denotes a transition metal atom, R and R' each denote a hydrocarbon group of 1-20 carbon atoms, X denotes a halogen atom, and l, m and n denote numerals satisfying the equations l.gtoreq.0, m.gtoreq.0 and n-(l+m).gtoreq.0, n corresponding to the valence of the transition metal,
as the catalyst component (B) an organoaluminum compound represented by the formula AlR.sup.1.sub.a X'.sub.3-a, wherein R.sup.1 denotes a hydrocarbon group of 1-20 carbon atoms, X denotes a halogen atom, and a denotes a numeral satisfying the equation 1.ltoreq.a.ltoreq.3, or an aluminoxane obtained by the reaction of said organoaluminum compound with water, and
as the catalyst component (C) an organic compound having at least two hydroxyl groups.

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patent: 4098980 (1978-07-01), Markle et al.
patent: 4528339 (1985-07-01), Coleman, III et al.
patent: 4555497 (1985-11-01), Coleman, III et al.
patent: 4622309 (1986-11-01), Coleman, III et al.
Natta et al, "Stereospecific Polymerization of Conjugated Diolefins . . .", Chimica e Industria, 40, 362 (1957).
Synthesis of Syndiotactic Poly-1,2-(4-methyl-1,3-pentadiene) Adolfo Zambelli et al, Macromolecules 1989, 22, pp. 2126-2128.

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