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US 2006/0189492 A1Published application
Soot dispersants and lubricating oil compositions containing same
AssigneeInfineum International Limited
InventorsTushar Bera, Nancy Diggs, Rolfe Hartley, Jacob Emert, Michael Alessi, Jun Hua
Life of this patent
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Abstract
Linked aromatic compounds found to act as potent soot dispersants in lubricating oil compositions; lubricating oil compositions containing such soot dispersants and precursor compounds from which the soot dispersants are derived.
Claims48
A compound of the formula:
- wherein:
- each Ar independently represents an aromatic moiety having 0 to 3 substituents selected from the group consisting of alkyl, alkoxy, alkoxyalkyl, hydroxy, hydroxyalkyl, halo and combinations thereof;
- each L is independently a linking moiety comprising a carbon-carbon single bond or a linking group;
- each Y is independently a moiety of the formula H(O(CR2)n)yX—, wherein X is selected from the group consisting of (CR′2)z, O and S;
- R and R′ are each independently selected from H, C1 to C6 alkyl and aryl;
- z is 1 to 10;
- n is 0 to 10 when X is (CR′2)z, and 2 to 10 when X is O or S;
- and y is 1 to30;
- each a is independently 0 to 3, with the proviso that at least one Ar moiety bears at least one group Y;
- and
- m is 1 to 100.
8 more elements
A compound of the formula:
- wherein:
- each Ar independently represents an aromatic moiety having 0 to 3 substituents selected from the group consisting of alkyl, alkoxy, alkoxyalkyl, hydroxy, hydroxyalkyl, acyloxy, acyloxyalkyl, aryloxy, aryloxy alkyl, halo and combinations thereof;
- each L is independently a linking moiety comprising a carbon-carbon single bond or a linking group;
- each Y is independently a moiety of the formula Z(O(CR2)n)yX—, wherein X is selected from the group consisting of (CR′2)z, O and S;
- R and R′ are each independently selected from H, C1 to C6 alkyl and aryl;
- z is 1 to 10;
- n is 0 to 10 when X is (CR′2)z, and 2 to 10 when X is O or S;
- y is 1 to 30;
- Z is H, an acyl group, an alkyl group or an aryl group;
- each a is independently 0 to 3, with the proviso that at least one Ar moiety bears at least one group Y in which Z is not H;
- and
- m is 1 to 100.
9 more elements
Dependencies are inferred from the claim text.