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US 10,479,953 B2Granted
Emulsifier for use in lubricating oil
AssigneeAfton Chemical Corporation
InventorsAndrew Yeung, Anthony Jarvis, Matthew Ross
Life of this patent
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Abstract
The present disclosure relates to emulsifying agents produced from succinic acids or anhydrides and polyalkylene glycols. The present disclosure also relates to lubricating oils containing such emulsifying agents. The emulsifying agent provides a lubricating oil that is substantially free of an aqueous layer after about 24 hours when tested according to ASTM D7563-10.
Claims10
A lubricating oil composition comprising
- a major amount of a base oil;
- about 0.001 to about 0.15 weight percent of an emulsifying agent including a compound of Formula I
- wherein
- each X is independently a polyalkylene oxide group of the formula —[OA]p-;
- Y is a hydroxyl group or a polyalkylene oxide group of the formula —[OA]p-OH;
- each A is independently an alkylene selected from the group consisting of ethylene, propylene, and butylene, and mixtures thereof;
- Rb is H or a chemical moiety having the structure
- R is a linear or branched aliphatic group having a number average molecular weight of about 750 to about 2500;
- and
- p is an integer to independently provide each X and/or each Y with a number average molecular weight of about 150 to about 250;
- and
- m is an integer to provide a weight average molecular weight of the compound of Formula I from about 7,000 to about 50,000.
9 more elements
Dependencies are inferred from the claim text.