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US 5,057,235 AGranted
Sulfur-phosphorus adducts of chromium catalyzed polyalphaolefins
AssigneeMobil Oil Corporation
InventorsLiehpao O. Farng, Andrew G. Horodysky, Derek A. Law
Life of this patent
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Abstract
Phosphorodithioate derivatives of oligomers of polyalphaolefins of high viscosity index for use as lubricants and lubricant additives is described.
Claims30
A liquid derivative of an oligomer of an alpha-olefin, having a methyl group to methylene group branch ratio of less than 0.19, wherein the derivative has an empirical formula of ##STR7## where X can be R which is a hydrocarbon group of 3 to 30 carbon atoms which is unsubstituted or substituted by O, S or N;
- and where each of R.sub.1, R.sub.2, R.sub.3 and R.sub.4 is hydrogen or alkyl or alkenyl of 1 to 500 carbon atoms.
Dependencies are inferred from the claim text.