Manufacture of synthetic lubricant additives from low molecular

Details Manufacture of synthetic lubricant additives from low molecular Manufacture of synthetic lubricant additives from low molecular

1982-04-26

1983-11-01

David, Curtis R.

Chemistry of hydrocarbon compounds

Adding hydrogen to unsaturated bond of hydrocarbon, i.e.,...

With preliminary diverse conversion

585 10, 585255, 585525, 585 18, C07C 500

Patent

active

044131569

ABSTRACT:
An improved process for the manufacture of synthetic lubricant additives from olefins having two or three carbon atoms is described. The low molecular weight olefins are converted to internal olefins having 9 to 24 carbon atoms via isomerization and disproportionation. The process utilizes boron trifluoride catalysis with a promoter to produce from the C.sub.9 -C.sub.24 internal olefins oligomer mixtures that have surprisingly low viscosities at low temperatures and surprisingly high viscosity indexes as compared with the oligomers found in other methods. It is important that internal olefins be used almost exclusively in the second step of the method of this invention.

REFERENCES:
patent: 3152998 (1964-10-01), Moss
patent: 3726938 (1973-04-01), Berger
patent: 4045508 (1977-08-01), Cupples et al.
patent: 4167534 (1979-09-01), Petrillo et al.
patent: 4218330 (1980-08-01), Shubkin

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