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US 6,602,832 B2Granted
Oil-soluble additive compositions for lubricating oils
AssigneeCrompton Corporation
InventorsRavindranath Mukkamala, Rajiv Manohar Banavali
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Abstract
An oil-soluble lubricant additive composition comprising: (a) at least one compound of formula I: wherein R1, R2, R3 and R4 are independently hydrogen, alkyl, alkenyl, aryl or aralkyl; or R1 and R2, or R3 and R4, combine with the carbon atom to which they are attached to form an alkyl or alkenyl ring; and (b) an acid having the formula RCO2H, wherein R is C1-C25 alkyl, C2-C25 alkenyl, C2-C25 alkynyl, C5-C25 aryl or C5-C25 aralkyl.
Claims10
An oil-soluble lubricant additive composition comprising:
- (a) at least one compound of formula
- wherein R1, R2, R3 and R4 are independently hydrogen, alkyl, alkenyl, aryl or aralkyl;
- or R1 and R2, or R3 and R4, combine with the carbon atom to which they are attached to form an alkyl or alkenyl ring;
- and
- (b) an acid having the formula RCO2H, wherein R is C1-C25 alkyl, C2-C25 alkenyl, C2-C25 alkynyl, C5-C25 aryl or C5-C25 aralkyl.
2 more elements
A composition comprising:
- (a) at least one compound of formula
- wherein R1, R2, R3 and R4 are independently hydrogen, alkyl, alkenyl, aryl or aralkyl;
- or R1 and R2, or R3 and R4, combine with the carbon atom to which they are attached to form an alkyl or alkenyl ring;
- (b) an acid having the formula RCO2H, wherein R is C1-C25 alkyl, C2-C25 alkenyl, C2-C25 alkynyl, C5-C25 aryl or C5-C25 aralkyl;
- and
- (c) a lubricating oil;
- wherein components (a) and (b) are present in a total amount from 0.1% to 20% based on total weight of the composition.
4 more elements
A composition produced by blending:
- (a) at least one compound of formula
- wherein R1, R2, R3 and R4 are independently hydrogen, alkyl, alkenyl, aryl or aralkyl;
- or R1 and R2, or R3 and R4, combine with the carbon atom to which they are attached to form an alkyl or alkenyl ring;
- (b) an acid having the formula RCO2H, wherein R is C1-C25 alkyl, C2-C25 alkenyl, C2-C25 alkynyl, C5-C25 aryl or C5-C25 aralkyl;
- and
- (c) a lubricating oil;
- wherein components (a) and (b) are added in a total amount from 0.1% to 20% based on total weight of the composition.
4 more elements
Dependencies are inferred from the claim text.