Group 4 metal amidinate catalysts and addition polymerization pr

Details Group 4 metal amidinate catalysts and addition polymerization pr Group 4 metal amidinate catalysts and addition polymerization pr

1994-12-12

1996-03-26

Zitomer, Fred

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

502349, 502351, 526126, 526347, 5263471, C08F 442, C08F11208, B01J 3138

Patent

active

055021280

ABSTRACT:
Amidinate Group 4 metal complexes wherein the metal is in the +2, +3 or +4 formal oxidation state and activating cocatalysts or activating techniques are used to produce catalysts useful for polymerizing olefins. In particular, vinylaromatic monomers are polymerized to form highly syndiotactic polymers.

REFERENCES:
patent: 5045517 (1991-09-01), Campbell, Jr. et al.
patent: 5066741 (1991-11-01), Campbell, Jr.
patent: 5206197 (1993-04-01), Campbell, Jr.
A. N. Chernega et al, J. Chem. Soc., Chem. Commun. (1993) 1415-17.
D. Fenske et al, Z. Naturforsch (1988) 43b, 1611-15.
H. W. Roesky, et al., Chem Ber., 1988, 121, 1403-6.

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