Selective hydrogenation of conjugation diolefin polymers with ra

Details Selective hydrogenation of conjugation diolefin polymers with ra Selective hydrogenation of conjugation diolefin polymers with ra

1991-05-13

1993-01-05

Lipman, Bernard

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

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

5253328, 5253329, 5253331, 5253332, 525339, C08F 804

Patent

active

051771551

ABSTRACT:
This invention provides a catalyst and a process for the hydrogenation of conjugated diolefin polymers which first involves the polymerization or copolymerization of such monomers with an organo alkali metal polymerization initiator in a suitable solvent thereby creating a living polymer. The living polymer can be terminated by the addition of hydrogen. Finally, selective hydrogenation of the unsaturable double bonds in the conjugated diolefin units of the terminated polymer is carried out in the presence of an initiator and at least one rare earth compound of the formula

REFERENCES:
patent: Re27145 (1971-06-01), Jones
patent: 3032569 (1962-05-01), Freeman et al.
patent: 3494942 (1970-02-01), Miki et al.
patent: 3634594 (1970-08-01), Hiyama et al.
patent: 3670054 (1972-06-01), De La Mare et al.
patent: 3700633 (1972-10-01), Wald et al.
patent: 4501857 (1985-02-01), Kishimoto et al.
patent: 4668773 (1987-05-01), Marks et al.
patent: 4673714 (1987-06-01), Kishimoto et al.
patent: 4716257 (1987-12-01), Marks et al.
patent: 4801666 (1989-01-01), Marks et al.
patent: 4845201 (1989-07-01), Chauvin et al.
patent: 4929699 (1990-05-01), Wilson et al.
"Highly Reactive Organolanthanides" by Jeske et al., Journal of American Chemical Society, 1985, vol. 107.
Advances in Organometallic Chemistry edited by Stone and West, vol. 24, published in 1985 by Academic Press Inc., pp. 131-177.

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