Process for polymerizing olefins to form polymers of narrow mole

Details Process for polymerizing olefins to form polymers of narrow mole Process for polymerizing olefins to form polymers of narrow mole

1989-09-08

1991-01-08

Garvin, Patrick P.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526124, 526129, 526142, 526148, 526151, 526156, 526159, 502120, C08F 402, C08F 5643

Patent

active

049836943

ABSTRACT:
An olefin, particularly alpha-olefin, supported catalyst composition, containing a transition metal or a compound thereof and an activator, has an average pore diameter of about 20 to about 300 Angstroms, at a substantially constant catalyst particle size for a given range of average pore diameters. The catalyst produces polymers having gradually decreasing molecular weight distribution with decreasing pore size of the catalyst at a constant particle size.

REFERENCES:
patent: 4481301 (1984-11-01), Nowlin et al.
patent: 4521573 (1985-06-01), Lee et al.
patent: 4670413 (1987-06-01), Furtek
Shida et al., A Study of Supported Magnesium Titanium Catalysts, (ACS Division of Polymer Chemistry) 24, 1, pp. 110-111 (1983).
Journal of Polymer Science, Polymer Chemistry Edition, vol. 19, 1967-1976 (1981) M. P. McDaniel Fracturing Silica Based Catalysts During Ethylene Polymerization.
Journal of Applied Polymer Science: Applied Polymer Symposium 36. 49-60 (1981) J. P. Hogan et al., Phillips Petroleum Company Loop Reactor Polyethylene Technology.

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