Catalyst systems for polymerization and copolymerization of olef

Details Catalyst systems for polymerization and copolymerization of olef Catalyst systems for polymerization and copolymerization of olef

1991-07-12

1993-11-02

Smith, Edward J.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

502117, 526150, 526160, 5263485, 526352, 556179, C08F 4622, C08F 1002

Patent

active

052584755

ABSTRACT:
The catalyst systems of this invention consist of catalyst precursors which are metallocene derivatives and cocatalysts. The cocatalysts comprise mixtures of: (i) trimethylaluminum, and (ii) at least one organotin compound selected from the group consisting of those with a general formulae:

REFERENCES:
patent: 4404344 (1983-09-01), Sinn et al.
patent: 4542199 (1985-09-01), Kaminsky et al.
patent: 4874734 (1989-10-01), Kioka et al.
patent: 4897455 (1990-01-01), Welborn
patent: 4952714 (1990-08-01), Welborn
patent: 5128295 (1992-07-01), Porri et al.
Racanelli et al, European Polymer Journal, 1970, vol. 6, pp. 751-761.
Porri et al. European Polymer Journal, 1969, vol. 5, pp. 1-13.
H. Sinn et al, Adv. Organomet. Chem., 18, 99 (1980).

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