Process for the preparation of 1-olefin polymers

Details Process for the preparation of 1-olefin polymers Process for the preparation of 1-olefin polymers

1991-08-22

1995-05-16

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, 526127, 526132, 526133, 526149, 526150, 526351, 526902, C08F 4602, C08F 1000

Patent

active

054161789

ABSTRACT:
In the case of Ziegler catalysts based on a metallocene as the transition metal component and an aluminoxane as the activator, preactivation of the metallocene with the aluminoxane results in a considerable increase in the activity of the catalyst system. Furthermore, 1-olefin polymers of a high degree of isotacticity and having compact, spherical particles, a very narrow particle size distribution and a high bulk density are obtained by means of a catalyst system of this type.

REFERENCES:
patent: 4522982 (1985-06-01), Ewen
patent: 4542199 (1985-09-01), Kaminsky et al.
patent: 4769510 (1988-09-01), Kaminsky et al.
patent: 4794096 (1988-12-01), Ewen
patent: 4897455 (1990-01-01), Wilborn
Moore, Physical Chemistry, Prentice-Hall, N.J. (1955) p. 116.
Grant & Hackh's Chemical Dictionary (3d.Ed), p. 192.

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