Sulfurized polyisobutylene based wear and oxidation inhibitors

Details Sulfurized polyisobutylene based wear and oxidation inhibitors Sulfurized polyisobutylene based wear and oxidation inhibitors

2004-11-23

2008-08-19

Calddarola, Glenn (Department: 1797)

Solid anti-friction devices, materials therefor, lubricant or se

Lubricants or separants for moving solid surfaces and...

Heterocyclic ring compound; a heterocyclic ring is one...

C508S302000, C508S308000

Reexamination Certificate

active

07414013

ABSTRACT:
Sulfurized olefin compositions and compounds of the formula:wherein R1is hydrogen or methyl; X is sulfur or oxygen; m is an integer from 1 to 9; and n is 0 or 1, and when n is 0 then R1is methyl, and when n is 1 then R1is hydrogen are disclosed. The resulting compounds are particularly the polyisobutyl-1,2-dithiole-4-cyclopentene-3-thione compounds and derivatives are useful in lubricating oils.

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