EP4396311A1 - Schmiermittelzusammensetzung mit verbesserten kaltverdickungseigenschaften - Google Patents

Schmiermittelzusammensetzung mit verbesserten kaltverdickungseigenschaften

Info

Publication number
EP4396311A1
EP4396311A1 EP22773193.2A EP22773193A EP4396311A1 EP 4396311 A1 EP4396311 A1 EP 4396311A1 EP 22773193 A EP22773193 A EP 22773193A EP 4396311 A1 EP4396311 A1 EP 4396311A1
Authority
EP
European Patent Office
Prior art keywords
group
meth
lubricating composition
monomers
polymer
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP22773193.2A
Other languages
English (en)
French (fr)
Inventor
Mickaël Debord
David SENARD
Jérôme VALADE
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
TotalEnergies Onetech SAS
Original Assignee
TotalEnergies Onetech SAS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by TotalEnergies Onetech SAS filed Critical TotalEnergies Onetech SAS
Publication of EP4396311A1 publication Critical patent/EP4396311A1/de
Pending legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M145/00—Lubricating compositions characterised by the additive being a macromolecular compound containing oxygen
    • C10M145/02—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • C10M145/10—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds containing monomers having an unsaturated radical bound to a carboxyl radical, e.g. acrylate
    • C10M145/12—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds containing monomers having an unsaturated radical bound to a carboxyl radical, e.g. acrylate monocarboxylic
    • C10M145/14—Acrylate; Methacrylate
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M169/00—Lubricating compositions characterised by containing as components a mixture of at least two types of ingredient selected from base-materials, thickeners or additives, covered by the preceding groups, each of these compounds being essential
    • C10M169/04—Mixtures of base-materials and additives
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
    • C10M2209/02—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • C10M2209/08—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds containing monomers having an unsaturated radical bound to a carboxyl radical, e.g. acrylate type
    • C10M2209/084—Acrylate; Methacrylate
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2219/00—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
    • C10M2219/06—Thio-acids; Thiocyanates; Derivatives thereof
    • C10M2219/062—Thio-acids; Thiocyanates; Derivatives thereof having carbon-to-sulfur double bonds
    • C10M2219/066—Thiocarbamic type compounds
    • C10M2219/068—Thiocarbamate metal salts
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2010/00—Metal present as such or in compounds
    • C10N2010/04—Groups 2 or 12
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2020/00—Specified physical or chemical properties or characteristics, i.e. function, of component of lubricating compositions
    • C10N2020/01—Physico-chemical properties
    • C10N2020/071—Branched chain compounds
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
    • C10N2030/02—Pour-point; Viscosity index
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
    • C10N2030/04—Detergent property or dispersant property
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
    • C10N2030/08—Resistance to extreme temperature
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/25—Internal-combustion engines

Definitions

  • the present invention relates to lubricating compositions having improved cold properties. More particularly, the present application relates to the use of a specific polymer to improve the cold thickening properties of a lubricating composition.
  • Another object of the present invention is to provide a lubricating composition having good cold thickening properties.
  • R4 groups represent, independently, a C2-C4 alkylene group
  • m is an integer ranging from 0 to 4, more preferably from 0 to 2.
  • each A can be the same or different, and the fragments (AO) m can be linked randomly or in blocks.
  • the hydrocarbon-based polymer may also contain at least one structural unit distinct from the isobutylene or 1,2-butylene units.
  • the hydrocarbon polymer may for example comprise one or more of the following units:
  • this double bond can be partially or totally hydrogenated by hydrogenation.
  • the total number of butylene units (isobutylene and/or 1,2 butylene), relative to the total number of structural units of the hydrocarbon polymer, can be determined by analyzing the hydrocarbon polymer by 13 C nuclear magnetic resonance spectroscopy and using the following equation:
  • the number-average molecular weight (Mn) of each of the (co)polymers (Y) is preferably from 1,000 to 25,000 g. mol -1 , more preferably from 2,000 to 20,000 g. mol -1 , particularly preferably from 3,000 to 15,000 g. mol -1 , more preferably from 4,000 to 10,000 g. mol -1 .
  • n-dodecyl (meth)acrylate n-tridecyl (meth)acrylate, n-tetradecyl (meth)acrylate, (meth) n-pentadecyl acrylate, n-hexadecyl (meth)acrylate, n-octadecyl (meth)acrylate, n-icosyl (meth)acrylate, n-tetracosyl (meth)acrylate, n-triacontyl (meth)acrylate and n-hexatriacontyl (meth)acrylate.
  • monomers (e) mention may in particular be made of: 2-octyldecyl (meth)acrylate, an ester of ethylene glycol mono-2-octylpentadecyl ether and (meth)acrylic acid, ( 2-octyldodecyl meth)acrylate, 2-n-decyltetradecyl (meth)acrylate, 2-n-dodecylhexadecyl (meth)acrylate, 2-tetradecyloctadecyl (meth)acrylate, 2-dodecylpentadecyl (meth)acrylate , 2-tetradecylheptadecyl (meth)acrylate, 2-hexadecylheptadecyl (meth)acrylate, 2-heptadecylicosyl (meth)acrylate, 2-hexadecyldocosyl (meth)acrylate, 2-eicosy
  • the monomers (e) are chosen from alkyl (meth)acrylates in which the alkyl group is chosen from branched C12-C36, more preferably C14-C32, typically C16-C28 alkyl groups.
  • Example of monomer (f2) 4-nitrostyrene.
  • monoalkylaminoalkyl (meth)acrylates in particular those comprising a C2-C6 aminoalkyl group in which a C1-C6 alkyl group is linked to a nitrogen atom, such as ( N-t-butylaminoethyl meth)acrylate and N-methylaminoethyl (meth)acrylate; C6-C12 dialkenylamines, for example di(meth)allylamine;
  • polyoxyalkylene glycols in which the alkylene group is C2-C4 and the degree of polymerization is from 2 to 50; polyoxyalkylene polyols such as, for example, polyoxyalkylene ethers of polyhydric alcohols comprising from 3 to 8 hydroxyl groups, the alkylene group being C2-C4, and the degree of polymerization ranging from 2 to 100; mono(meth)acrylates of C1-C4 alkyl ethers of polyoxyalkylene glycols or of polyoxyalkylene polyols such as, for example, polyethylene glycol (Mn from 100 to 300 g.mol- 1 ), polypropylene glycol mono(meth)acrylate (Mn: from 130 to 500 g.mol -1 ), methoxy polyethylene glycol mono(meth)acrylate (Mn: from 110 to 310 g.mol -1 ), the product of the addition of lauryl alcohol with oxide of ethylene (2 to 30 moles), and polyoxyethylene mono(meth)acrylate
  • monomers (h2) (meth)acryloyloxy alkyl C2-C4 phosphonic acids such as for example (meth)acryloyloxyethyl phosphonic acid; alkenyl C2-C12 phosphonic acids such as vinylphosphonic acid, allylphosphonic acid and octenylphosphonic acid.
  • the monomers (h) are chosen from monomers (h1), more preferably from (meth)acryloyloxyalkyl C2-C4 phosphate esters, advantageously the monomers (h) are (meth)acryloyloxyethyl phosphate.
  • Examples of monomer (j) C2-C20 alkenes such as ethylene, propylene, butene, isobutylene, pentene, heptene, diisobutylene, octene, dodecene and octadecene .
  • Examples of monomer (k) cyclopentene, cyclohexene, cycloheptene, cyclooctene and pinene.
  • monomers (I) examples include styrene, ⁇ -methylstyrene, vinyltoluene, 2,4-dimethylstyrene, 4-ethylstyrene, 4-isopropylstyrene, 4-butylstyrene, 4- phenylstyrene, 4-cyclohexylstyrene, 4-benzylstyrene, 4-crotylbenzene, indene and 2-vinylnaphthalene.
  • alkyl, cycloalkyl or aralkyl esters of unsaturated polycarboxylic acids [C1-C8 alkyl diesters (dimethyl maleate, dimethyl fumarate, diethyl maleate and maleate dioctyl) of unsaturated dicarboxylic acids (such as maleic acid, fumaric acid and itaconic acid)].
  • the monomers (b) represent from 1% to 80% by weight, relative to the total weight of the (co)polymer, more preferably from 5% to 60% by weight, in particular from 10% to 35% by weight, typically 10% to 30% by weight.
  • the monomers (a) and (b) together represent at least 10% by weight of the total weight of the (co)polymer, more preferably from 15% to 90% by weight, in particular from 20% to 80% by weight, typically 20% to 50% by weight.
  • the monomers (e) represent from 0% to 40% by weight, relative to the total weight of the (co)polymer, more preferably from 1% to 30% by weight, in particular from 1% to 25% by weight.
  • the monomers (f), (h) and (h) each represent from 0% to 15% by weight, relative to the total weight of the (co)polymer, more preferably from 1% to 12% by weight, in particular from 2% to 10% by weight.
  • the monomers (i) represent from 0.01 ppm to 200 ppm by weight, relative to the total weight of the (co)polymer, more preferably from 0.005 ppm to 50 ppm by weight, in particular from 0.1 ppm to 20 ppm by weight.
  • the monomers (j) to (p) each represent from 0 ppm to 10% by weight, relative to the total weight of the (co)polymer, more preferably from 1% to 7% by weight, in particular from 2% to 5% by weight.
  • the (co)polymer preferably has a crystallization temperature of less than or equal to -30°C, more preferably less than or equal to -40°C, in particular less than or equal to -50°C, typically less than or equal to -60 °C.
  • copolymer implemented according to the invention can be synthesized according to any method well known to those skilled in the art or can be found commercially.
  • Specific examples include a method in which the monomers are subjected to solution polymerization in a solvent in the presence of a polymerization catalyst.
  • solvent examples include toluene, xylene, C9-C10 alkylbenzenes, methyl ethyl ketone and mineral oils.
  • the quantity of molybdenum element, in particular of MoDTC compounds, of the lubricating composition according to the invention can be measured according to standard ASTM D5185.
  • the lubricating composition comprises from 0.01% to 10% by weight, preferably from 0.1% to 5% by weight, more preferably from 0.5% to 3% by weight, of modifier (s) molybdenum friction, based on the total weight of the lubricating composition.
  • the friction modifier(s) comprising molybdenum are chosen from organomolybdenum compounds, in particular chosen from molybdenum dithiocarbamate derivatives (MoDTC), molybdenum dithiophosphate derivatives (MoDTP) or sulfur-free molybdenum complexes, preferably still among molybdenum dithiocarbamate derivatives (MoDTC).
  • Molybdenum dithiocarbamate compounds are complexes formed from a metal nucleus bonded to one or more ligands independently chosen from alkyl dithiocarbamate groups.
  • the MoDTC compound used according to the invention can be chosen from compounds whose core comprises two molybdenum atoms (dimeric MoDTC) and compounds whose core comprises three molybdenum atoms (trimeric MoDTC).
  • ⁇ k represents an integer at least equal to 4, preferably ranging from 4 to 10, advantageously from 4 to 7;
  • ⁇ n represents an integer ranging from 1 to 4.
  • the lubricating composition according to the invention may comprise a mixture of at least one symmetrical MoDTC compound and at least one asymmetric MoDTC compound.
  • R 1 and R 2 which are identical, then represent an alkyl group comprising from 5 to 15 carbon atoms and R 3 and R 4 , which are identical to and different from R 1 and R 2 , represent an alkyl group comprising from 5 to 15 carbon atoms.
  • R 1 and R 2 which are identical, represent an alkyl group comprising from 6 to 10 carbon atoms and R 3 and R 4 represent an alkyl group comprising from 10 to 15 carbon atoms.
  • the MoDTC compound is a mixture:
  • MoDTP compounds As examples of MoDTP compounds, mention may be made of the Molyvan L® product marketed by the company R.T Vanderbilt Company or the Sakura-lube 300® or Sakura-lube 310G® products marketed by the company Adeka.
  • a source of molybdenum chosen from molybdenum trioxide or molybdates, preferably ammonium molybdate, in an amount sufficient to provide from 0.1 to 30%, preferably from 2 to 8.5%, in mass of molybdenum relative to the mass of complex.
  • the organomolybdenum complex comprises at least one compound of formula (D1) or of formula (D2) or their mixture: in which Q 1 independently represents a linear or branched, saturated or unsaturated alkyl group, comprising from 3 to 30 carbon atoms, preferentially from 3 to 20 carbon atoms, advantageously from 7 to 17 carbon atoms.
  • the lubricating composition of the invention comprises calcium-based detergent so as to have from 1200 to 2000 ppm of calcium relative to the total mass of the lubricating composition and/or comprises magnesium-based detergent so as to to have from 0 to 600 ppm of magnesium, based on the total mass of the lubricating composition.
  • the base oils of the lubricating compositions used according to the invention can also be chosen from synthetic oils, such as certain esters of carboxylic acids and alcohols, polyalkylene glycols (PAG), as well as from polyalphaolefins.
  • synthetic oils such as certain esters of carboxylic acids and alcohols, polyalkylene glycols (PAG), as well as from polyalphaolefins.
  • the base oil or oils represent at least 50% by weight, preferably at least 60% by weight, more preferably at least 70% by weight, even more preferably at least 75% by weight, of the total weight of the lubricating composition.
  • the lubricating composition also comprises one or more other additives.
  • the other preferred additives for the lubricating composition according to the invention are chosen from detergent additives, anti-wear additives, friction modifier additives with the exception of molybdenum-based friction modifiers, extreme pressure additives, dispersants other than the boron dispersants defined above, pour point improvers, viscosity index improvers, anti- foam, thickeners and mixtures thereof.
  • the lubricating compositions (CC1 comparative compositions, CL1 to CL4 compositions according to the invention), all of grade 0W-20, are prepared by mixing the compounds described in Table 2, at a temperature of the order of 60°C. The percentages indicated correspond to percentages by mass relative to the total mass of the composition. [Table 2]

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Chemistry (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
  • Lubricants (AREA)
EP22773193.2A 2021-09-03 2022-09-02 Schmiermittelzusammensetzung mit verbesserten kaltverdickungseigenschaften Pending EP4396311A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR2109231A FR3126711A1 (fr) 2021-09-03 2021-09-03 Composition lubrifiante présentant des propriétés d’épaississement à froid améliorées
PCT/EP2022/074489 WO2023031417A1 (fr) 2021-09-03 2022-09-02 Composition lubrifiante présentant des propriétés d'épaississement à froid améliorées

Publications (1)

Publication Number Publication Date
EP4396311A1 true EP4396311A1 (de) 2024-07-10

Family

ID=79018396

Family Applications (1)

Application Number Title Priority Date Filing Date
EP22773193.2A Pending EP4396311A1 (de) 2021-09-03 2022-09-02 Schmiermittelzusammensetzung mit verbesserten kaltverdickungseigenschaften

Country Status (7)

Country Link
US (1) US20250051677A1 (de)
EP (1) EP4396311A1 (de)
JP (1) JP2024533156A (de)
KR (1) KR20240054340A (de)
CN (1) CN117897469A (de)
FR (1) FR3126711A1 (de)
WO (1) WO2023031417A1 (de)

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4316973A (en) 1979-09-10 1982-02-23 The University Of Akron Novel telechelic polymers and processes for the preparation thereof
US4889647A (en) 1985-11-14 1989-12-26 R. T. Vanderbilt Company, Inc. Organic molybdenum complexes
DE3700363A1 (de) 1987-01-08 1988-07-21 Basf Ag Kraft- oder schmierstoffzusammensetzung und verwendung von polybutyl- oder polyisobutylderivaten in denselben
US5137647A (en) 1991-12-09 1992-08-11 R. T. Vanderbilt Company, Inc. Organic molybdenum complexes
US5412130A (en) 1994-06-08 1995-05-02 R. T. Vanderbilt Company, Inc. Method for preparation of organic molybdenum compounds
JPH0931483A (ja) 1995-07-20 1997-02-04 Tonen Corp 潤滑油組成物
JP4533973B2 (ja) 1996-12-13 2010-09-01 エクソンモービル リサーチ アンド エンジニアリング カンパニー 有機モリブデン錯体を含有する潤滑油組成物
JP4391014B2 (ja) * 1997-08-22 2009-12-24 エボニック ローマックス アディティヴス ゲゼルシャフト ミット ベシュレンクテル ハフツング 高−及び低分子量ポリマー添加剤混合物を用いる潤滑油の低温流動性の改良法
WO2001009242A1 (fr) 1999-07-30 2001-02-08 Sanyo Chemical Industries, Ltd. Composition de polyol polymere, son procede de production et procede de production de resine polyurethanne
US7205423B1 (en) 2005-09-23 2007-04-17 R.T. Vanderbilt Company, Inc. Process for the preparation of organo-molybdenum compounds
ES2613527T3 (es) 2011-04-15 2017-05-24 Vanderbilt Chemicals, Llc Método para producir composiciones de dialquilditiocarbamato de molibdeno y composiciones lubricantes que contienen las mismas
FR2998303B1 (fr) 2012-11-16 2015-04-10 Total Raffinage Marketing Composition lubrifiante
FR3014898B1 (fr) 2013-12-17 2016-01-29 Total Marketing Services Composition lubrifiante a base de triamines grasses
EP3093334A4 (de) * 2014-02-25 2017-12-13 Sanyo Chemical Industries, Ltd. Viskositätsindexverbesserer für schmierölzusammensetzung
CN110462009B (zh) * 2017-03-23 2021-12-07 三洋化成工业株式会社 粘度指数改进剂和润滑油组合物
US10738258B2 (en) * 2017-03-24 2020-08-11 Exxonmobil Research And Engineering Company Method for improving engine fuel efficiency and energy efficiency
US11214754B2 (en) * 2017-10-20 2022-01-04 Chevron Japan Ltd. Low viscosity lubricating oil composition

Also Published As

Publication number Publication date
KR20240054340A (ko) 2024-04-25
WO2023031417A1 (fr) 2023-03-09
US20250051677A1 (en) 2025-02-13
CN117897469A (zh) 2024-04-16
JP2024533156A (ja) 2024-09-12
FR3126711A1 (fr) 2023-03-10

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