Polymerization and catalysts

Patent · Tue Jun 27 04:00:00 EDT 1989

OSTI ID:5568148

Short, J N; McDaniel, M P

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
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020400* -- Petroleum-- Processing
ALKALINE EARTH METAL COMPOUNDS
ALKENES
BROMIDES
BROMINE COMPOUNDS
CATALYST SUPPORTS
CATALYSTS
CHALCOGENIDES
CHEMICAL COMPOSITION
CHEMICAL REACTIONS
CHLORINE
ELEMENTS
ETHYLENE
HALIDES
HALOGEN COMPOUNDS
HALOGENS
HYDROCARBONS
IODINE COMPOUNDS
MAGNESIUM COMPOUNDS
MINERALS
NONMETALS
ORGANIC COMPOUNDS
OXIDE MINERALS
OXIDES
OXYGEN COMPOUNDS
POLYMERIZATION
SILICA
SILICON COMPOUNDS
SILICON OXIDES
TITANIUM COMPOUNDS
TRANSITION ELEMENT COMPOUNDS