Polymerization of .alpha.-olefins with transition metal catalyst

Details Polymerization of .alpha.-olefins with transition metal catalyst Polymerization of .alpha.-olefins with transition metal catalyst

1995-04-17

1997-06-10

Nagumo, Mark

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526161, 526170, 526172, 5263486, 526352, 526943, 502103, 502117, 502154, 502153, 556 32, 556 56, 556 52, C08F 4642

Patent

active

056376600

ABSTRACT:
Disclosed is a novel bidentate pyridine transition metal catalyst having the general formula ##STR1## where Y is O, S, NR, ##STR2## each R is independently selected from hydrogen or C.sub.1 to C.sub.6 alkyl, each R' is independently selected from C.sub.1 to C.sub.6 alkyl, C.sub.1 to C.sub.6 alkoxy, C.sub.6 to C.sub.16 aryl, halogen, or CF.sub.3, M is titanium, zirconium, or hafnium, each X is independently selected from halogen, C.sub.1 to C.sub.6 alkyl, C.sub.1 to C.sub.6 alkoxy, or ##STR3## L is X, cyclopentadienyl, C.sub.1 to C.sub.6 alkyl substituted cyclopentadienyl, indenyl, fluorenyl, or ##STR4## and "n" is 1 to 4. Also disclosed is a method of making a poly-.alpha.-olefin comprising polymerizing an .alpha.-olefin monomer using that catalyst or a catalyst that has the general formula ##STR5## where Y, M, L, X, and R' were previously defined.

REFERENCES:
patent: 3900452 (1975-08-01), Valvassori et al.
Article, M.J. Frazer et al., "Reactions of 8-Quinolinol with Covalent Halides. Part I. Tin and Titanium Tetrachloride," J. Chem. Soc. (A), 1966, pp. 544-549.
Article, M.J. Frazer et al., "Reactions of 8-Quinolinol with Covalent Halides. Part II. Tin (IV) Antitanium (IV) Halides," J. Chem Soc. (A), 1968, pp. 69-74.

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