Catalytic system and process for the production of poydiolefins

Details Catalytic system and process for the production of poydiolefins Catalytic system and process for the production of poydiolefins

1995-02-03

1997-05-06

Beck, Shrive

Catalyst, solid sorbent, or support therefor: product or process

Catalyst or precursor therefor

Organic compound containing

502102, 502154, 502155, 502157, 502170, 502171, 502202, B01J 3114

Patent

active

056271190

ABSTRACT:
A catalytic system to polymerize diolefinic monomers consists of a lanthanide salt, an organometallic compound of a metal belonging to groups I, II and III of the periodic table of elements and an organometallic compound of boron. The polymers obtained are characterized in that they have a high degree of 1,4 chain units and ratio between 1.4-cis/1,4-trans units which can vary as desired, and also a narrow molecular weight distribution.

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International Polymer Science and Technology, vol. 10, No. 6, 1983, pp. T/83-T/84, N.N. Chigir, et al., "Stereospecificity of Systems Based on Organo-Neodymium Compounds and (iso-C4H9)3Al for the Polymerisation of Dienes" (No Month).

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