Olefin polymerization process

Details Olefin polymerization process Olefin polymerization process

1974-08-12

1976-06-01

Holler, Alan

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526104, 526106, 526194, 526348, 526352, C08F 402, C08F 424, C08F 1002, C08F 1000

Patent

active

039608263

ABSTRACT:
An olefin polymerization process for the preparation of polyolefins having relatively low molecular weights and high melt indexes without loss of catalyst activity, utilizing a catalyst comprising a silica xerogel support having a pore volume greater than about 2.0 cc/g, the major portion of which volume is provided by pores having pore diameters ranging from 300 to 600 A and a surface area ranging from 200 to 500 m.sup.2 /g, and having deposited thereon a metal-containing catalytic material, such as chromium oxide, or other metal oxide. The process is designed for the preparation of polymers and copolymers of 1-olefins having a maximum of 8 carbon atoms in the chain and having no branching nearer the double bond than the 4-position, e.g., ethylene polymers.

REFERENCES:
patent: 3225023 (1965-12-01), Hogan et al.
patent: 3819598 (1974-06-01), Galiano et al.

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