Back to results
US 2019/0249099 A1Published application
Copolymers as additives for fuels and lubricants
AssigneeBASF SE
InventorsMaxim PERETOLCHIN, Ivette GARCIA CASTRO, Aaron FLORES-FIGUEROA, Dieter FAUL
Life of this patent
Estimating the term…
Abstract
The present invention relates to novel uses of copolymers for removing and/or reducing the level of deposits in the fuel system and/or injection system of direct injection diesel and/or gasoline engines.
Claims12
A process of removing and/or preventing a deposit in a fuel system and/or injection system of an engine, the process comprising operating the engine with a fuel,
- wherein the engine is a direct injection diesel and/or gasoline engine, and
- the fuel comprises a copolymer obtained by
- (I) copolymerizing.;
- (A) at least one ethylenically unsaturated mono- or dicarboxylic acid or derivatives thereof,
- (B) at least one α-olefin having from at least 12 up to and including 30 carbon atoms,
- (C) optionally at least one fofther aliphatic or cycloaliphatic olefin which has at least 4 carbon atoms and is different than (B), and
- (D) at least one (meth)acrylic ester of an alcohol having at least 5 carbon atoms,
- wherein (A) comprises maleic anhydride, and then
- (II) partly or fully hydrolyzing the anhydride functionalities present in the copolymer obtained from (I) and/or partly hydrolyzing carboxylic ester functionalities present in the copolymer obtained from (I), where at least 10% of the anhydride functionalities are hydrolyzed.
6 more elements
10-11. (canceled)
An additive concentrate, comprising:
- at least one copolymer obtained by
- (I) copolymerizing;
- (A) at least one ethylenically unsaturated mono- or dicarboxylic acid or derivatives thereof,
- (B) at least one α-olefin having from at least 12 up to and including 30 carbon atoms,
- (C) optionally at least one futthet aliphatic or cycloaliphatic olefin which has at least 4 carbon atoms and is different than (B), and
- (D) at least one (meth)acrylic ester of an alcohol having at least 5 carbon atoms,
- wherein (A) comprises maleic anhydride, and then
- (II) partly or fully hydrolyzing the anhydride functionalities present in the copolymer obtained from (I) and/or partly hydrolyzing carboxylic ester functionalities present in the copolymer obtained from (I), where at least 10% of the anhydride functionalities are hydrolyzed;
- and
- at least one further diesel or gasoline fuel additive or lubricant additive.
7 more elements
A composition, comprising:
- a copolymer obtained by
- (I) copolymerizing;
- (A) at least one ethylenically unsaturated mono- or dicarboxylic acid or derivatives thereof,
- (B) at least one α-olefin having from at least 12 up to and including 30 carbon atoms,
- (C) optionally at least one further aliphatic or cycloaliphatic olefin which has at least 4 carbon atoms and is different than (B), and
- (D) at least one (meth)acrylic ester of an alcohol having at least 5 carbon atoms,
- wherein (A) comprises maleic anhydride, and then
- (II) partly or fully hydrolyzing the anhydride functionalities present in the copolymer obtained from (I) and/or partly hydrolyzing carboxylic ester functionalities present in the copolymer obtained from (I), where at least 10% of the anhydride functionalities are hydrolyzed;
- wherein the composition is of a fuel, lubricant, or kerosene;
- and
- if the composition is of a fuel, then optionally wherein the fuel is a diesel fuel.
8 more elements
Dependencies are inferred from the claim text.