Catalyst – solid sorbent – or support therefor: product or process – Catalyst or precursor therefor – Plural component system comprising a - group i to iv metal...
Patent
1997-05-14
1999-10-12
Bell, Mark L.
Catalyst, solid sorbent, or support therefor: product or process
Catalyst or precursor therefor
Plural component system comprising a - group i to iv metal...
502115, 502121, 502122, 502123, 502124, 502125, 502126, 502127, 502134, B01J 3100, B01J 3700, C08F 402, C08F 460
Patent
active
059654775
ABSTRACT:
This invention is directed to a process for the preparation of a supported metallocene catalyst, said process comprising preparing a precursor catalyst material by dissolving a magnesium halide in an electron donor solvent in which the magnesium halide is completely soluble, heating the solution to a temperature in the range of 20.degree. C. to the boiling point of the respective electron donor for a period ranging between 10 to 60 minutes, separately preparing a solution of the metallocene compound into the same electron donor solvent, heating the solution to a temperature in the range of 25.degree. C. to 70.degree. C. for a period ranging between 0.1 to 0.5 hrs., mixing the two solutions to obtain a homogenous solution of catalyst precursor compound, stirring and maintaining this resulting homogenous solution at a temperature in the range of 50.degree. C. to 70.degree. C. for a period of 0.5 to 2 hrs., separately preparing a slurry of support in a liquid hydrocarbon medium, heating the slurry to a temperature in the range of 50.degree. C. to 70.degree. C. and stirring it for a period of 0.25 to 2 hrs., mixing the homogenous solution of the catalyst precursor compound with the slurry of the support, stirring the resulting slurry for 0.5 to 3 hrs. maintaining at a temperature ranging between 50.degree. C to 70.degree. C., cooling the resultant slurry to room temperature under an inert atmosphere, separating the solid by conventional methods, washing the solid with a hydrocarbon solvent and drying the solid under vacuum to obtain the product.
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patent: 5397757 (1995-03-01), Mink et al.
Sensarma Soumen
Sivaram Swaminathan
Bell Mark L.
Council of Scientific & Industrial Research
Pasterczyk J.
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