Catalytic complexes based on lanthanides for the (co) polymeriza

Details Catalytic complexes based on lanthanides for the (co) polymeriza Catalytic complexes based on lanthanides for the (co) polymeriza

1998-11-16

2000-09-19

Nazario-Gonzalez, Porfirio

Organic compounds -- part of the class 532-570 series

Organic compounds

Rare earth containing

556 1, 526131, 526164, 526173, 526335, C07F 500, C08F 406

Patent

active

061214299

ABSTRACT:
Complexes of lanthanides are described, which are effective in the polymerization of conjugated dienes, obtained by reacting LnX.sub.3 with at least one Lithium compound selected from:

REFERENCES:
patent: 4801666 (1989-01-01), Marks et al.
R. Taube, et al., Journal of Organometallic Chemistry, vol. 1, No. 513, pp. 37-47, "XLVII. Darstellung und Charakterisierung Eininger Anionischer Allylneodym(III)-Komplexe Als Katalysatoren Fur Die Stereospezifische Butadienopolymerisation: Li[Nd(.eta..sup.3 -C.sub.3 H.sub.5).sub.4 ] .cndot. 1,5Dioxan, Li[Nd(.pi.-C.sub.5 H.sub.5 )(.eta.-C.sub.3 H.sub.5).sub.3 ] .cndot. 2Dioxan Und Li[Nd(.eta..sup.5 -C.sub.5 Me.sub.5)(.eta..sup.3 -C.sub.3 H.sub.5).sub.3 ] .cndot. 3Dimethylglykolether", May 3, 1996.

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