Recovery of inert hydrocarbon diluents used in preparation of catalysts
A process is described for preparation of a catalyst for the polymerization of olefins which comprises mixing a metal halide compound and a transition metal compound, allowing the thus mixed compounds to react to produce a reaction product and then contacting the reaction product with a precipitating agent to produce a solid reaction product and further contacting the solid reaction product with a transition metal tetrahalide to produce a solid catalyst product. All the above steps are conducted in a suitable organic diluent and the solid catalyst product is washed at least once in a suitable organic diluent, the purification of effluent organic diluent. The process consists of the following steps: (a) collecting separate portions of the organic diluents which have been respectively contacted with the precipitating agent and the transition metal tetrahalide, (b) combining the separate portions of the organic diluent in a volume ratio range between 30:70 to about 70:30 with an amount of water equal to at least about 1.5 times the volume of the thus combined separate portions of the organic diluent to produce an acidic combined diluent mixture, (c) separating the resulting organic and aqueous phases of the combined diluent mixture, and (d) recovering treated organic diluent from the organic phase for further purification and recycling in the process for preparation of a catalyst.
- Assignee:
- Phillips Petroleum Co., Bartlesville, OK
- Patent Number(s):
- US 4588704
- OSTI ID:
- 5571190
- Resource Relation:
- Patent File Date: Filed date 30 Apr 1985
- Country of Publication:
- United States
- Language:
- English
Similar Records
SUMMARY TECHNICAL REPORT FOR THE PERIOD JANUARY 1, 1959 TO MARCH 31, 1959
Supported polyolefin catalyst components and methods of making and using same
Related Subjects
37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
ALKENES
POLYMERIZATION
CATALYSTS
CHEMICAL PREPARATION
CHEMICAL REACTION YIELD
HALIDES
MIXING
ORGANIC SOLVENTS
PRECIPITATION
PURIFICATION
QUANTITY RATIO
RECYCLING
TRANSITION ELEMENTS
WATER
CHEMICAL REACTIONS
ELEMENTS
HALOGEN COMPOUNDS
HYDROCARBONS
HYDROGEN COMPOUNDS
METALS
ORGANIC COMPOUNDS
OXYGEN COMPOUNDS
SEPARATION PROCESSES
SOLVENTS
SYNTHESIS
YIELDS
360401* - Polymers & Plastics- Preparation & Fabrication- (-1987)
400201 - Chemical & Physicochemical Properties