Sulfurized polyisobutylene based wear and oxidation inhibitors

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

2005-04-26

2005-04-26

Cheung, William K. (Department: 1713)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

C526S085000, C526S348700, C528S023000

Reexamination Certificate

active

06884855

ABSTRACT:
Sulfurized olefin compositions and components are prepared from sulfurizing high methylvinylidene polyisobutylene(s) having at least 25% methylvinylidene and a number average molecular weight in the range of about 120 to about 600, at suitable temperatures and pressures. The resulting sulfurized reaction product and polyisobutyl-1,2-dithiole-4-cyclopentene-3-thione compounds and derivatives are useful in lubricating oils.

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