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US 2013/0199482 A1Published application
Motor having improved properties
AssigneeEvonik Oil Additives GmbH
InventorsJustin August Langston, Michael E. Webb, Peter Moore, Trilby Cressman, Jen-Lung Wang
Life of this patent
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Abstract
The present invention describes a motor designed for Fuel compatibility comprising a lubricant composition comprises at least one ester group containing polymer having a high polarity.
Claims22
1:
- A motor, comprising a lubricant composition,
- wherein the motor is suitable for a flexible-fuel vehicle or a dual-fuel vehicle and the lubricant composition comprises at least one ester group containing polymer having a high polarity.
2:
- The motor according to claim 1, comprising a compression rate of at least 10:1.
3:
- The motor according to claim 1, comprising a fuel injection pump.
4:
- The motor according to claim 1, comprising a multi valve.
5:
- The motor according to claim 1,
- wherein the motor meets a requirement of exhaust emission standard Euro 5.
6:
- The motor according to claim 1, comprising an exhaust gas recirculation.
7:
- The motor according to claim 1, comprising a secondary-air system.
8:
- The motor according to claim 1,
- wherein the at least one ester group containing polymer is a statistical copolymer comprising at least 7% by weight of dispersing repeat units derived from a dispersing monomer.
9:
- The motor according to claim 8,
- wherein the at least one ester group containing polymer is a statistical copolymer comprising at least 7% by weight of dispersing repeat units derived from at least one heterocyclic vinyl compound.
10:
- The motor according to claim 1,
- wherein the at least one ester group containing polymer is a graft copolymer having an nonpolar polymer as a graft base and a dispersing monomer as a graft layer.
11:
- The motor according to claim 10,
- wherein the at least one ester group containing polymer comprises at least one heterocyclic vinyl compound as the graft layer.
12:
- The motor according to claim 11
- wherein the at least one ester group containing polymer is the graft copolymer comprising from 0.5 to 10% by weight of dispersing repeat units derived from the at least one heterocyclic vinyl compound.
13:
- The motor according to claim 12,
- wherein the at least one ester group containing polymer is the graft copolymer comprising from 1 to 5% by weight of dispersing repeat units derived from the at least one heterocyclic vinyl compound.
14:
- The motor according to claim 1,
- wherein the at least one ester group containing polymer has a —CO—NR2— peak of 1689 to 1692 cnf1 as measured by FTIR spectroscopy.
15:
- The motor according to claim 1,
- wherein the at least one ester group containing polymer is selected from the group consisting of a polyalkyl (meth)acrylate (PAMA), a polyalkyl fumerate, a polyalkyl maleate, and a combination thereof.
16:
- The motor according to claim 1,
- wherein the at least one ester group containing polymer has a weight-average molecular weight of from 10 000 to 600 000 g/mol.
17:
- The motor according to claim 1,
- wherein the at least one ester group containing polymer is a graft copolymer comprising a graft base obtained by a process comprising polymerizing a monomer composition comprising:
- a) from 0 to 40% by weight, based on a weight of the monomer composition for preparing a nonpolar segment, of an ethylenically unsaturated ester compound of formula (I):
- wherein
- R is hydrogen or methyl,
- R1 is a linear or branched alkyl radical having 1 to 6 carbon atoms, and
- R2 and R3 are each independently hydrogen or a group of formula —COOR′ in which R′ is hydrogen or an alkyl group having 1 to 6 carbon atoms,
- b) from 5 to 100% by weight, based on the weight of the monomer composition for preparing the nonpolar segment, of an ethylenically unsaturated ester compound of formula (II):
- wherein
- R is hydrogen or methyl,
- R4 is a linear or branched alkyl radical having 7 to 15 carbon atoms, and
- R5 and R6 are each independently hydrogen or a group of the formula —COOR′ in which R″ is hydrogen or an alkyl group having 7 to 15 carbon atoms,
- c) from 0 to 80% by weight, based on the weight of the monomer composition for preparing the nonpolar segment, of an ethylenically unsaturated ester compound of formula (III):
- wherein
- R is hydrogen or methyl,
- R7 is a linear or branched alkyl radical having 16 to 30 carbon atoms, and
- R8 and R9 are each independently hydrogen or a group of formula —COOR′″ in which R′″ is hydrogen or an alkyl group having 16 to 30 carbon atoms, and
- d) from 0 to 50% by weight, based on the weight of the monomer composition for preparing the hydrophobic segments, of a comonomer.
15 more elements
18:
- The motor according to claim 1,
- wherein the at least one ester group containing polymer comprises at least one heterocyclic vinyl compound selected from the group consisting of 2-vinylpyridine, 3-vinylpyridine, 2-methyl-5-vinylpyridine, 3-ethyl-4-vinylpyridine, 2,3-dimethyl-5-vinylpyridine, vinylpyrimidine, vinylpiperidine, 9-vinylcarbazole, 3-vinylcarbazole, 4-vinylcarbazole, 1-vinylimidazole, N-vinylimidazole, 2-methyl-1-vinylimidazole, N-vinylpyrrolidone, 2-vinylpyrrolidone, N-vinylpyrrolidine, 3-vinylpyrrolidine, N-vinylcaprolactam, N-vinylbutyrolactam, vinyloxolane, vinylfuran, vinylthiophene, vinylthiolane, a vinylthiazole and a hydrogenated vinylthiazole, a vinyloxazole, a hydrogenated vinyloxazole, and a combination thereof.
19:
- The motor according to claim 1,
- wherein the lubricant composition comprises at least one additional additive which is not a polymer comprising an ester group having a high polarity.
20:
- The motor as claimed in claim 19,
- wherein the at least one additive is a viscosity index improver, a pour point improver, a dispersant, a detergent, a defoamer, a corrosion inhibitor, an antioxidant, an antiwear additive, an extreme pressure additive, a friction modifier, or a combination thereof.
21:
- The motor as claimed in claim 20,
- wherein the antiwear additive, the extreme pressure additive, or both is selected from the group consisting of a phosphorous compound, a compound comprising sulfur and phosphorous, a compound comprising sulfur and nitrogen, a sulfur compound comprising elemental sulfur and ¾S-sulfurized hydrocarbon, a sulfurized glyceride and a fatty acid ester, an overbased sulfonate, a chlorine compound, graphite, molybdenum disulfide, and a combination thereof.
22:
- A process for producing an emulsion stabilizer in a lubricant, comprising:
- contacting the lubricant with a polymer comprising an ester group having a high polarity.