Polymerization catalyst, method of making and use therefor

Patent · Tue Oct 28 00:00:00 EST 1986

OSTI ID:7151251

McDaniel, M P; Smith, P D

A process is described for (co) polymerizing ethylene which comprises contacting ethylene and 0-10 mole % of at least one mono-1-olefin having 3-10 carbon atoms at a temperature of 20/sup 0/-300/sup 0/C. and a pressure ranging from 0 to 1000 psia in the presence of a catalyst consisting essentially of: (a) a predominantly silica-containing support treated with in the range of about 0.1-20 mole %, calculated as the metal. The support is based on the untreated support, of at least one compound selected from the group consisting of Group IIA oxide or compounds convertible to the oxide form, a Group VA or VB oxide or compounds convertible to the oxide form or sulfuric acid. The support is then calcined in an oxygen-containing atmosphere at a temperature in the range of 300/sup 0/-800/sup 0/C for a time in the range of 0.5-20 hours, and thereafter contacted with (b) 0.01 to 10 wt. % of at least one zerovalent chromium compound, calculated as chromium metal and based on the weight of the treated support prepared as described in (a).

• Assignee: Phillips Petroleum Co., Bartlesville, OK
• Patent Number(s): US 4619980
• OSTI ID: 7151251
• Resource Relation: Patent File Date: Filed date 1 Apr 1985
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
CATALYSTS
CHEMICAL PREPARATION
ETHYLENE
POLYMERIZATION
ALKENES
CALCINATION
CATALYST SUPPORTS
CHROMIUM COMPOUNDS
HIGH TEMPERATURE
MEDIUM PRESSURE
MEDIUM TEMPERATURE
METALS
OXIDES
OXYGEN
QUANTITY RATIO
SILICA
SULFURIC ACID
TIME DEPENDENCE
CHALCOGENIDES
CHEMICAL REACTIONS
DECOMPOSITION
ELEMENTS
HYDROCARBONS
HYDROGEN COMPOUNDS
INORGANIC ACIDS
MINERALS
NONMETALS
ORGANIC COMPOUNDS
OXIDE MINERALS
OXYGEN COMPOUNDS
PYROLYSIS
SILICON COMPOUNDS
SILICON OXIDES
SYNTHESIS
THERMOCHEMICAL PROCESSES
TRANSITION ELEMENT COMPOUNDS
400201* - Chemical & Physicochemical Properties