Process for producing ethylene polymers

Details Process for producing ethylene polymers Process for producing ethylene polymers

1992-01-28

1993-05-25

Schofer, Joseph L.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526125, 526352, 502116, C08F 206, C08F 4656

Patent

active

052141144

ABSTRACT:
A process for preparing an ethylene polymer which comprises polymerization of ethylene or ethylene and an .alpha.-olefin having 3 to 10 carbon atoms over a catalyst comprising the following components (A) and (B): (A) which is a solid component for a Ziegler catalyst obtained by bringing (2) into contact with (1) and bringing the contact product into contact with (3) and (4) wherein (1) is a solid catalyst component comprising (i)-(iii) where (i): MgX.sub.2, (ii): titanium tetraalkoxide and/or a polytitanate ester, (iii): a polymeric silicon compound, having a formula of ##STR1## R.sup.1 being a hydrocarbyl group, (2) is a halogenated Si compound; (3) is a halohydrocarbon; (4) is an organo-Al compound; and (B) is an organo-Al compound.
An ethylene polymer having a moderately broad molecular weight distribution can be prepared in a high activity by use of the catalyst. The ethylene polymer is suited for the production of fibers or tapes.

REFERENCES:
patent: 4593010 (1986-06-01), Malpass
patent: 5082818 (1992-01-01), Matsuura et al.

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