Catalyst – solid sorbent – or support therefor: product or process – Catalyst or precursor therefor – Plural component system comprising a - group i to iv metal...
Patent
1991-06-19
1992-05-12
Garvin, Patrick P.
Catalyst, solid sorbent, or support therefor: product or process
Catalyst or precursor therefor
Plural component system comprising a - group i to iv metal...
502108, 502115, 502116, 502118, 502125, 502133, 502134, 526125, C08F 4656
Patent
active
051127865
ABSTRACT:
A catalyst for polymerization of olefin monomers, comprising Component (A) which is a solid catalytic compound obtained by subjecting at least the following three compounds to a contact reaction; Sub-component (i) which is a component for Ziegler catalysts comprising titanium, magnesium and a halogen; Sub-component (ii) which is a silicon compound represented by the formula R.sup.1 .sub.4-n SiX.sub.n wherein R.sup.1 is a hydrocarbyl group having 1 to 20 carbon atoms, X is a halogen, and n is a number in the range of 0<n.ltoreq.4, and Sub-component (iii) which is divinylbenzene, the amount of said Sub-component (iii) polymerized in the course of the contact reaction being from 0.01 to 10 g per 1 g of the Sub-component (i), and Component (B) which is an organoaluminum compound.
When polymerizing .alpha.-olefin monomers having three or more carbon atoms, the catalyst of this invention does not require a process of preliminary polymerization of the monomers, which process is substantially needed when the monomers are polymerized in the presence of a conventional catalyst.
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Garvin Patrick P.
Mitsubishi Petrochemical Company Limited
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