Polymerization and catalysts
This patent describes a process for the production of ethylene homopolymer which comprises contacting ethylene under polymerization conditions with a catalyst comprising (1) a solid complex titanium-containing catalyst A obtained by mixing (a) a pretreated particulate silica-containing supporting containing at least 80 wt. % silica formed by reacting the support with an oroganoboron compound comprising in a trihydrocarbyl boron compound having the formula B(R/sup 3/)/sub 3/ in which R/sup 3/ is selected from among hydrogen, alkyl, aryl and cycloalkyl, at least one R/sup 3/ in each compound being a hydrocarbon radical containing from 1 to about 6 carbon atoms under conditions such that at least a portion of the OH group on the surface of the silica-containing support is reacted with the treating agent with (b) an organomagnesium compound of the formula MgR/sub 2/ wherein R is a hydrocarbon radical having from 1 to 12, inclusive, carbon atoms and (c) a halogenated tetravalent titanium compound of the formula TiX/sub n/(OR')/sub 4-n/ in which X is a bromide, chlorine, or iodine, R' is a hydrocarbon radical selected from saturated aliphatic, saturated cycloaliphatic and aromatic groups containing from 1 to about 12,m inclusive, carbon atoms, and n in an integer of 3 to 4.
- Assignee:
- Phillips Petroleum Co., Bartlesville, OK
- Patent Number(s):
- US 4843133
- OSTI ID:
- 5568148
- Resource Relation:
- Patent File Date: 10 Jun 1985
- Country of Publication:
- United States
- Language:
- English
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Polymerization catalyst, production and use
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Related Subjects
CATALYSTS
CHEMICAL COMPOSITION
ETHYLENE
POLYMERIZATION
BROMIDES
CATALYST SUPPORTS
CHLORINE
IODINE COMPOUNDS
MAGNESIUM COMPOUNDS
ORGANIC COMPOUNDS
SILICA
TITANIUM COMPOUNDS
ALKALINE EARTH METAL COMPOUNDS
ALKENES
BROMINE COMPOUNDS
CHALCOGENIDES
CHEMICAL REACTIONS
ELEMENTS
HALIDES
HALOGEN COMPOUNDS
HALOGENS
HYDROCARBONS
MINERALS
NONMETALS
OXIDE MINERALS
OXIDES
OXYGEN COMPOUNDS
SILICON COMPOUNDS
SILICON OXIDES
TRANSITION ELEMENT COMPOUNDS
020400* - Petroleum- Processing