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US 12,351,774 B2Granted
Friction reducing additives and process for preparing the same
AssigneeENI S.p.A.
InventorsGiulio Assanelli, Marcello Notari, Paolo Cambise, Andrea Pucci, Giuseppe Iasilli
Life of this patent
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Abstract
A friction reducing additive is described formed by a mixture that is obtainable by autocatalytic condensation reaction of fatty acids with alkanolamines. The mixture includes an amide, one or more esters of carboxylic acids, and an oxazoline in an amount greater than 7% by weight with respect to the total weight of the mixture, wherein the additive may be used both in lubricants and in fuels.
Claims11
A friction reducer additive (OFR) suitable to be used in lubricating oils, including “Low Saps” and “Mid Saps”, and in fuels,
- said additive not containing metals, sulfur and phosphorus, and being in the form of a mixture of organic compounds comprising
- an amide, and/or
- one or more esters of carboxylic acids, and
- an oxazoline in an amount which varies from 20 to 70% by weight with respect to the total weight of the mixture,
- wherein
- the amide (AM-AO) has general formula (III),
- the esters (E-AO) have general formula (IV)
- oxazoline (OX-AO) has general formula (V)
- wherein R is a group selected from the group consisting of a linear or branched alkyl, or a linear or branched alkenyl, having a number of carbon atoms between 2 and 40;
- R1 and R2 groups, which can be the same or different from each other, are independently selected from the group consisting of hydrogen, a hydroxy methyl group (—CH2OH) and hydrocarbon groups based on carbon and hydrogen (and free of heteroatoms), linear or branched, having formula CnH2n+1, CnH2n, CnHn wherein “n” is an integer that can vary from 1 to 40.
7 more elements
Dependencies are inferred from the claim text.