High viscosity index olefin oligomer process

Details High viscosity index olefin oligomer process High viscosity index olefin oligomer process

1988-11-14

1990-03-06

Davis, Curtis R.

Chemistry of hydrocarbon compounds

Product blend, e.g., composition, etc., or blending process...

Component of indefinite molecular weight greater than 150

585 12, 585 18, 585255, 585510, 585532, C07C 202, C10L 116

Patent

active

049067982

ABSTRACT:
A high viscosity index olefin oligomer is made by feeding an olefin monomer near the top of a distillation column, maintaining the overhead temperature near the boiling point of the olefin monomer at system pressure and maintaining the bottom of the column and the reboiler at a temperature just above the boiling point of the highest boiling oligomer that is to be excluded from the product. An oligomerization catalyst (e.g. AlCl.sub.3) is introduced into the column. The catalyst has a boiling point or sublimation temperature which is too low to permit passage out the bottom of the column and too high to cause it to escape out the top of the column.

REFERENCES:
patent: 4242530 (1980-12-01), Smith
patent: 4282392 (1981-08-01), Cupples et al.
patent: 4319064 (1982-03-01), Heckelsberg et al.
patent: 4420646 (1983-12-01), Darden et al.
patent: 4827064 (1989-05-01), Wu

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