Process for polymerizing alpha-olefins

Details Process for polymerizing alpha-olefins Process for polymerizing alpha-olefins

1986-10-30

1988-09-06

Garvin, Patrick P.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526 90, 526125, 526142, 526151, 526156, 526159, 5263482, 5263486, 526352, C08F 462, C08F 464, C08F 468

Patent

active

047694297

ABSTRACT:
A supported solid catalyst composition for polymerizing alpha-olefins is prepared by treating a carrier with a transition metal compound. The carrier utilized in the synthesis must have such an average pore diameter that the resulting catalyst composition has an average pore diameter of at least about 170 Angstroms. The catalyst composition has higher productivity than similar catalyst compositions of lower average pore diameter, and it produces polymers of lower density and higher melt and high load melt indexes than such similar catalyst compositions of lower average pore diameter. Also disclosed is a process for polymerizing alpha-olefins in the presence of the catalyst of the invention.

REFERENCES:
patent: 4481301 (1984-11-01), Nowlin et al.
Shida et al., Polymer Preprints (ACS Div. Poly. Chem.), 24(1), pp. 110-111, Mar. 1983.
McDaniel, Journal of Polymer Science; Polymer Chemistry Edition, vol. 19, 1967-1976 (1981).
Hogan et al., Journal of Applied Polymer Science: Applied Polymer Symposium, 36, 49-60 (1981).

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