Patent ID: 6686511
Filing Date: 2004-02-03
Classification: C10G,C10M,C10N,Y10S

Abstract:
A process for making a lube base stock comprising:a) separating an olefinic feedstock with boiling points greater than 180Â° F. in a first separator into fractions comprising at least a light olefin fraction and a medium olefin fraction; b) contacting said light olefin fraction with a first oligomerization catalyst in a first oligomerization zone to produce a first product; c) contacting said medium olefin fraction and said first product with a second oligomerization catalyst in a second oligomerization zone to produce a second product, wherein said first oligomerization catalyst and said second oligomerization catalyst can be the same or different; and d) separating said second product in a second separator into a light byproduct fraction and a heavy product fraction, wherein said heavy product fraction comprises a lube base stock.