IT8547681A0 - Composizioni contenenti azoto e fosforo in particolare per lubrificanti e concentrati acquosi che le con tengono - Google Patents

Composizioni contenenti azoto e fosforo in particolare per lubrificanti e concentrati acquosi che le con tengono

Info

Publication number
IT8547681A0
IT8547681A0 IT8547681A IT4768185A IT8547681A0 IT 8547681 A0 IT8547681 A0 IT 8547681A0 IT 8547681 A IT8547681 A IT 8547681A IT 4768185 A IT4768185 A IT 4768185A IT 8547681 A0 IT8547681 A0 IT 8547681A0
Authority
IT
Italy
Prior art keywords
lubricants
contain
compositions containing
containing nitrogen
aqueous concentrates
Prior art date
Application number
IT8547681A
Other languages
English (en)
Other versions
IT8547681A1 (it
IT1182198B (it
Inventor
John Wesley Forsberg
Original Assignee
Lubrizol Corp
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 Lubrizol Corp filed Critical Lubrizol Corp
Publication of IT8547681A0 publication Critical patent/IT8547681A0/it
Publication of IT8547681A1 publication Critical patent/IT8547681A1/it
Application granted granted Critical
Publication of IT1182198B publication Critical patent/IT1182198B/it

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10MLUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M159/00Lubricating compositions characterised by the additive being of unknown or incompletely defined constitution
    • C10M159/12Reaction products
    • C10M159/123Reaction products obtained by phosphorus or phosphorus-containing compounds, e.g. P x S x with organic compounds
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07FACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
    • C07F9/00Compounds containing elements of Groups 5 or 15 of the Periodic Table
    • C07F9/02Phosphorus compounds
    • C07F9/06Phosphorus compounds without P—C bonds
    • C07F9/16Esters of thiophosphoric acids or thiophosphorous acids
    • C07F9/165Esters of thiophosphoric acids
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10MLUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M137/00Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing phosphorus
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10MLUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M173/00Lubricating compositions containing more than 10% water
    • C10M173/02Lubricating compositions containing more than 10% water not containing mineral or fatty oils
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10MLUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2201/00Inorganic compounds or elements as ingredients in lubricant compositions
    • C10M2201/02Water
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10MLUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2215/00Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10MLUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2215/00Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
    • C10M2215/24Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions having hydrocarbon substituents containing thirty or more carbon atoms, e.g. nitrogen derivatives of substituted succinic acid
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10MLUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2223/00Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10MLUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2223/00Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions
    • C10M2223/02Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions having no phosphorus-to-carbon bonds
    • C10M2223/04Phosphate esters
    • C10M2223/043Ammonium or amine salts thereof
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10MLUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2223/00Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions
    • C10M2223/02Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions having no phosphorus-to-carbon bonds
    • C10M2223/04Phosphate esters
    • C10M2223/047Thioderivatives not containing metallic elements
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10MLUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2223/00Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions
    • C10M2223/06Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions having phosphorus-to-carbon bonds
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10MLUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2223/00Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions
    • C10M2223/06Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions having phosphorus-to-carbon bonds
    • C10M2223/061Metal salts
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10MLUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2223/00Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions
    • C10M2223/06Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions having phosphorus-to-carbon bonds
    • C10M2223/065Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions having phosphorus-to-carbon bonds containing sulfur
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10MLUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2227/00Organic non-macromolecular compounds containing atoms of elements not provided for in groups C10M2203/00, C10M2207/00, C10M2211/00, C10M2215/00, C10M2219/00 or C10M2223/00 as ingredients in lubricant compositions
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10NINDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2050/00Form in which the lubricant is applied to the material being lubricated
    • C10N2050/01Emulsions, colloids, or micelles
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10NINDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2070/00Specific manufacturing methods for lubricant compositions
    • C10N2070/02Concentrating of additives

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Molecular Biology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Lubricants (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Catalysts (AREA)
IT47681/85A 1984-02-14 1985-02-13 Composizioni contenenti azoto e fosforo in particolare per lubrificanti e concentrati acquosi che le contengono IT1182198B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US58003384A 1984-02-14 1984-02-14

Publications (3)

Publication Number Publication Date
IT8547681A0 true IT8547681A0 (it) 1985-02-13
IT8547681A1 IT8547681A1 (it) 1986-08-13
IT1182198B IT1182198B (it) 1987-09-30

Family

ID=24319381

Family Applications (1)

Application Number Title Priority Date Filing Date
IT47681/85A IT1182198B (it) 1984-02-14 1985-02-13 Composizioni contenenti azoto e fosforo in particolare per lubrificanti e concentrati acquosi che le contengono

Country Status (14)

Country Link
US (2) US4772739A (it)
EP (1) EP0172225B1 (it)
JP (1) JPH0826340B2 (it)
BR (1) BR8505671A (it)
CA (1) CA1258267A (it)
DE (1) DE3572492D1 (it)
ES (1) ES8606366A1 (it)
FI (1) FI79547C (it)
IN (1) IN163405B (it)
IT (1) IT1182198B (it)
MX (1) MX166753B (it)
NO (1) NO168179C (it)
WO (1) WO1985003709A1 (it)
ZA (1) ZA85940B (it)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0826340B2 (ja) * 1984-02-14 1996-03-13 ザ▲ルーブリゾル コーポレイション 窒素およびりんを含有する組成物類、および該組成物類を含有する水性系類
US4618450A (en) * 1984-11-07 1986-10-21 The Lubrizol Corporation Aqueous systems containing amino sulfonic acid derivatives of carboxylic acids
US4770803A (en) * 1986-07-03 1988-09-13 The Lubrizol Corporation Aqueous compositions containing carboxylic salts
US4919178A (en) * 1986-11-14 1990-04-24 The Lubrizol Corporation Explosive emulsion
US5527491A (en) 1986-11-14 1996-06-18 The Lubrizol Corporation Emulsifiers and explosive emulsions containing same
US5129972A (en) 1987-12-23 1992-07-14 The Lubrizol Corporation Emulsifiers and explosive emulsions containing same
US5080813A (en) * 1990-03-26 1992-01-14 Ferro Corporation Lubricant composition containing dialkyldithiophosphoric acid neutralized with alkoxylated aliphatic amines
EP0450208B1 (en) * 1990-04-02 1999-12-01 Ethyl Petroleum Additives Limited Lubricant compositions and additives therefor
US5260051A (en) * 1990-12-17 1993-11-09 Lever Brothers Company, Division Of Conopco, Inc. Compositions comprising phosphate ester compounds containing a beneficial reagent component
US5328619A (en) * 1991-06-21 1994-07-12 Ethyl Petroleum Additives, Inc. Oil additive concentrates and lubricants of enhanced performance capabilities
EP0712434B1 (en) * 1993-08-03 2000-03-22 Infineum USA L.P. Low molecular weight basic nitrogen-containing reaction products as enhanced phosphorus/boron carriers in lubrication oils
FR2710918B1 (fr) * 1993-10-06 1995-12-01 Inst Francais Du Petrole Compositions lubrifiantes contenant un phosphate d'amine comportant un cycle imide terminal.
CA2176570C (en) * 1993-12-20 2004-03-30 Raymond Frederick Watts Oil soluble friction increasing additives for power transmission fluids
DE69432153T2 (de) * 1993-12-20 2003-11-27 Infineum Usa Lp Erhöhung der reibungsbeständigkeit von kraftübertragungsflüssigkeiten durch die verwendung von öllöslichen konkurierenden additiven
US5520831A (en) * 1993-12-20 1996-05-28 Exxon Chemical Patents Inc. Increasing the friction durability of power transmission fluids through the use of oil soluble competing additives

Family Cites Families (38)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2737492A (en) * 1952-03-26 1956-03-06 American Cyanamid Co Lubricating oil compositions
US3103492A (en) * 1958-07-30 1963-09-10 Lubricating composition
US3058910A (en) * 1958-10-24 1962-10-16 Hall Stewart Oil additive concentrate
US3074990A (en) * 1958-12-29 1963-01-22 Universal Oil Prod Co Alkylthiophosphoric acid salt of polymeric condensation product and use thereof
GB1009197A (en) * 1961-08-30 1965-11-10 Lubrizol Corp Stable water-in-oil emulsion
US3197405A (en) * 1962-07-09 1965-07-27 Lubrizol Corp Phosphorus-and nitrogen-containing compositions and process for preparing the same
US3133787A (en) * 1962-09-04 1964-05-19 Socony Mobil Oil Co Inc Corrosion inhibition
US3184412A (en) * 1962-09-28 1965-05-18 California Research Corp Lubricants inhibited against oxidation
US3185645A (en) * 1962-09-28 1965-05-25 California Research Corp Oxidation inhibited lubricants
US3201447A (en) * 1962-11-29 1965-08-17 Universal Oil Prod Co Ether amine salts of dithiophosphoric acid mono and diesters
GB1044810A (en) * 1963-05-14 1966-10-05 Lubrizol Corp Organic phosphinodithioate-amine reaction products
GB1054093A (it) * 1963-06-17
US3484504A (en) * 1963-12-12 1969-12-16 Universal Oil Prod Co Addition reaction product of oxyalkylenated phosphorus compounds and n-containing polymers and use thereof
US3359347A (en) * 1963-12-12 1967-12-19 Universal Oil Prod Co Addition reaction products of oxyalkylenated phosphorus compounds and nu-containing polymers
US3484374A (en) * 1963-12-12 1969-12-16 Universal Oil Prod Co Stabilization or organic substances
GB1084036A (it) * 1963-12-12 1900-01-01
US3320164A (en) * 1965-07-14 1967-05-16 Brunel Henri Non-corrosive, lubricating, cutting and cooling additives
US3519563A (en) * 1967-10-31 1970-07-07 Chevron Res Thiophosphate salts of aralkylene diamines as antiwear,extreme pressure and oxidation inhibitor agents
DE1719543B2 (de) * 1968-02-17 1976-06-16 Verfahren zur antielektrostatischen ausruestung von faeden, fasern und textilien aus polyester oder polyamid
GB1357745A (en) * 1971-05-05 1974-06-26 Exxon Research Engineering Co Lubricating oil compositions
US3826745A (en) * 1972-06-30 1974-07-30 Exxon Research Engineering Co Compositions containing metal dialkyl dithiophosphates are inhibited against haze and precipitates by amine salts of mixed acid phosphates
US4160089A (en) * 1973-10-18 1979-07-03 Aquila S.P.A. Utilization of orthophosphoric esters for the production of aqueous fluids for working metals
US4085054A (en) * 1973-10-18 1978-04-18 Giancarlo Bussi Utilization of orthophosphoric esters for the production of aqueous fluids for working metals
US3926821A (en) * 1973-12-12 1975-12-16 Lubrizol Corp Phosphorus, nitrogen and sulfo-containing additives
CA1025878A (en) * 1973-12-12 1978-02-07 The Lubrizol Corporation Phosphorus, nitrogen and sulfo-containing additives
DE2608836C3 (de) * 1976-03-04 1982-02-18 Rhein-Chemie Rheinau Gmbh, 6800 Mannheim Geschwefelte Phosphorsäure-ester-salze
US4257902A (en) * 1976-08-04 1981-03-24 Singer & Hersch Industrial Development (Pty.) Ltd. Water-based industrial fluids
US4101427A (en) * 1977-02-09 1978-07-18 Exxon Research & Engineering Co. Lubricant composition
US4215002A (en) * 1978-07-31 1980-07-29 Texaco Inc. Water-based phosphonate lubricants
US4329249A (en) * 1978-09-27 1982-05-11 The Lubrizol Corporation Carboxylic acid derivatives of alkanol tertiary monoamines and lubricants or functional fluids containing the same
EP0014288B1 (en) * 1978-12-07 1983-06-08 Exxon Research And Engineering Company Process for producing oil soluble derivatives of unsaturated c4-c10 dicarboxylic acid materials
US4234435A (en) * 1979-02-23 1980-11-18 The Lubrizol Corporation Novel carboxylic acid acylating agents, derivatives thereof, concentrate and lubricant compositions containing the same, and processes for their preparation
US4368133A (en) * 1979-04-02 1983-01-11 The Lubrizol Corporation Aqueous systems containing nitrogen-containing, phosphorous-free carboxylic solubilizer/surfactant additives
US4253975A (en) * 1979-08-27 1981-03-03 Mobil Oil Corporation Aqueous lubricants containing metal hydrocarbyl dithiophosphates
JPS6050398B2 (ja) * 1980-03-22 1985-11-08 本田技研工業株式会社 水溶性油剤
US4338205A (en) * 1980-08-25 1982-07-06 Exxon Research & Engineering Co. Lubricating oil with improved diesel dispersancy
US4721802A (en) * 1983-01-07 1988-01-26 The Lubrizol Corporation Dithiophosphorus/amine salts
JPH0826340B2 (ja) * 1984-02-14 1996-03-13 ザ▲ルーブリゾル コーポレイション 窒素およびりんを含有する組成物類、および該組成物類を含有する水性系類

Also Published As

Publication number Publication date
BR8505671A (pt) 1986-02-18
JPS61501210A (ja) 1986-06-19
EP0172225A1 (en) 1986-02-26
NO168179B (no) 1991-10-14
NO168179C (no) 1992-01-22
EP0172225B1 (en) 1989-08-23
ZA85940B (en) 1985-10-30
DE3572492D1 (en) 1989-09-28
CA1258267A (en) 1989-08-08
IT8547681A1 (it) 1986-08-13
FI853835L (fi) 1985-10-03
ES8606366A1 (es) 1986-04-16
NO854044L (no) 1985-10-11
IN163405B (it) 1988-09-17
FI79547C (fi) 1990-01-10
FI853835A0 (fi) 1985-10-03
US5041598A (en) 1991-08-20
US4772739A (en) 1988-09-20
JPH0826340B2 (ja) 1996-03-13
WO1985003709A1 (en) 1985-08-29
IT1182198B (it) 1987-09-30
ES540379A0 (es) 1986-04-16
FI79547B (fi) 1989-09-29
MX166753B (es) 1993-02-01

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