Colloid systems and wetting agents; subcombinations thereof; pro – Compositions containing an agent for breaking ; processes of... – Continuous liquid phase colloid system and discontinuous...
Reexamination Certificate
2011-01-04
2011-01-04
Choi, Ling-Siu (Department: 1796)
Colloid systems and wetting agents; subcombinations thereof; pro
Compositions containing an agent for breaking ; processes of...
Continuous liquid phase colloid system and discontinuous...
C516S162000, C516S181000, C516S191000
Reexamination Certificate
active
07863339
ABSTRACT:
A synergistic demulsifier composition for the improvement of demulsification properties and method of making said composition is disclosed along with a lubricant composition containing same. The demulsifier composition consists of effective amounts of one or more demulsifier additives and one or more dispersants. The demulsifier additives consist of a first copolymer of propylene oxide and ethylene oxide and a second copolymer of propylene oxide and ethylene oxide. The dispersant can be an untreated polyalkene succinimide type dispersant, preferably an untreated polyisobutylene succinimide type dispersant.
REFERENCES:
patent: 6498129 (2002-12-01), Meny et al.
Choi Ling-Siu
ExxonMobil Research and Engineering Company
Wang Chun-Cheng
LandOfFree
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