Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Polymers from only ethylenic monomers or processes of...
Patent
1989-02-10
1990-11-20
Garvin, Patrick P.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Polymers from only ethylenic monomers or processes of...
502113, 5263482, C08F 4646
Patent
active
049720333
ABSTRACT:
There is disclosed a catalyst composition for the polymerization of olefins, particularly alpha-olefins. The composition is prepared by synthesizing a catalyst precursor and then combining it with a conventional catalyst activator. The precursor is synthesized by: (a) contacting a solid, porous carrier with an aluminum compound; (b) contacting the resulting product with a mixture of vanadium and titanium compounds; (c) contacting the product with an alkyl ether and, (d) pre-activating the product of step (c) with a mixture of a halogenating agent and an aluminum compound.
The catalyst composition is used without a halogenating agent in the polymerization medium to produce narrow molecular weight distribution HDPE and LLDPE products, or with a halogenating agent in the polymerization medium to produce broad molecular weight distribution LLDPE and HDPE products.
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Garvin Patrick P.
McKillop Alexander J.
Mobil Oil Corporation
Speciale Charles J.
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