Process for producing lube oil from solvent refined oils by isomerization over a silicoaluminophosphate catalyst
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United States of America Patent
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May 9, 1995
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app pub date -
Jan 6, 1993
filing date -
Jan 6, 1993
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Abstract
The invention provides for a process for producing lube oil having excellent viscosity and viscosity index properties and a low pour point from a solvent refined gas oil. The process comprises contacting a raffinate having a solvent dewaxed viscosity index of at least 90 and boiling above 350.degree. F. with a catalyst comprising an intermediate pore size silicoaluminophosphate molecular sieve and at least one Group VIII metal under dewaxing and isocracking conditions so as to produce a product having a viscosity index greater than about 110.
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