DE69926015D1 - Vikositätsveränderer für schmieröle und schmierölzusammensetzung - Google Patents

Vikositätsveränderer für schmieröle und schmierölzusammensetzung

Info

Publication number
DE69926015D1
DE69926015D1 DE69926015T DE69926015T DE69926015D1 DE 69926015 D1 DE69926015 D1 DE 69926015D1 DE 69926015 T DE69926015 T DE 69926015T DE 69926015 T DE69926015 T DE 69926015T DE 69926015 D1 DE69926015 D1 DE 69926015D1
Authority
DE
Germany
Prior art keywords
lubricating oil
range
oil composition
ethylene
properties
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.)
Expired - Lifetime
Application number
DE69926015T
Other languages
English (en)
Other versions
DE69926015T2 (de
Inventor
Keiji Okada
Ryousuke Kaneshige
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.)
Mitsui Chemicals Inc
Lubrizol Corp
Original Assignee
Mitsui Chemicals Inc
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 Mitsui Chemicals Inc, Lubrizol Corp filed Critical Mitsui Chemicals Inc
Application granted granted Critical
Publication of DE69926015D1 publication Critical patent/DE69926015D1/de
Publication of DE69926015T2 publication Critical patent/DE69926015T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • C10M119/00—Lubricating compositions characterised by the thickener being a macromolecular compound
    • C10M119/02—Hydrocarbon polymers; Hydrocarbon polymers modified by oxidation
    • 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
    • C10M177/00—Special methods of preparation of lubricating compositions; Chemical modification by after-treatment of components or of the whole of a lubricating composition, not covered by other classes
    • 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
    • C10M143/00—Lubricating compositions characterised by the additive being a macromolecular hydrocarbon or such hydrocarbon modified by oxidation
    • C10M143/02—Polyethene
    • 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
    • C10M143/00—Lubricating compositions characterised by the additive being a macromolecular hydrocarbon or such hydrocarbon modified by oxidation
    • C10M143/04—Lubricating compositions characterised by the additive being a macromolecular hydrocarbon or such hydrocarbon modified by oxidation containing propene
    • 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
    • C10M157/00—Lubricating compositions characterised by the additive being a mixture of two or more macromolecular compounds covered by more than one of the main groups C10M143/00 - C10M155/00, each of these compounds being essential
    • 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
    • C10M171/00—Lubricating compositions characterised by purely physical criteria, e.g. containing as base-material, thickener or additive, ingredients which are characterised exclusively by their numerically specified physical properties, i.e. containing ingredients which are physically well-defined but for which the chemical nature is either unspecified or only very vaguely indicated
    • 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
    • C10M2205/00—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions
    • 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
    • C10M2205/00—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions
    • C10M2205/02—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers
    • C10M2205/022—Ethene
    • 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
    • C10M2205/00—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions
    • C10M2205/02—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers
    • C10M2205/024—Propene
    • 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
DE69926015T 1998-12-09 1999-12-08 Vikositätsveränderer für schmieröle und schmierölzusammensetzung Expired - Lifetime DE69926015T2 (de)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
JP35027998 1998-12-09
JP35028098 1998-12-09
JP35027998 1998-12-09
JP35028098 1998-12-09
PCT/JP1999/006868 WO2000034420A1 (fr) 1998-12-09 1999-12-08 Modificateur de viscosite pour huile lubrifiante et composition d'huile lubrifiante

Publications (2)

Publication Number Publication Date
DE69926015D1 true DE69926015D1 (de) 2005-08-04
DE69926015T2 DE69926015T2 (de) 2006-05-18

Family

ID=26579168

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69926015T Expired - Lifetime DE69926015T2 (de) 1998-12-09 1999-12-08 Vikositätsveränderer für schmieröle und schmierölzusammensetzung

Country Status (9)

Country Link
US (1) US6525007B2 (de)
EP (1) EP1148115B1 (de)
JP (1) JP4427669B2 (de)
KR (1) KR100615474B1 (de)
CN (1) CN1159419C (de)
AT (1) ATE298780T1 (de)
BR (1) BR9916013B1 (de)
DE (1) DE69926015T2 (de)
WO (1) WO2000034420A1 (de)

Families Citing this family (50)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4558951B2 (ja) * 1999-03-30 2010-10-06 三井化学株式会社 潤滑油用粘度調整剤および潤滑油組成物
BR0106323B1 (pt) 2000-05-10 2011-09-06 modificador de viscosidade para óleo lubrificante e composições de óleo lubrificante.
AU8087901A (en) * 2000-07-31 2002-02-13 Lubrizol Corp Viscosity improver compositions providing improved low temperature characteristics to lubricating oils
JP2002356693A (ja) * 2001-05-29 2002-12-13 Mitsui Chemicals Inc 潤滑油組成物
JP4606644B2 (ja) * 2001-05-29 2011-01-05 三井化学株式会社 潤滑油用粘度調整剤および潤滑油組成物
JP4717264B2 (ja) * 2001-05-31 2011-07-06 三井化学株式会社 潤滑油用粘度指数向上剤および潤滑油組成物
JP5248728B2 (ja) * 2001-09-27 2013-07-31 三井化学株式会社 潤滑油粘度調整剤および潤滑油組成物
AU2003258223A1 (en) * 2002-10-01 2004-04-23 The Lubrizol Corporation Organic acid salts as thickeners
WO2004044108A1 (ja) * 2002-11-12 2004-05-27 Mitsui Chemicals, Inc. 潤滑油組成物および内燃機関用潤滑油
CN1333057C (zh) * 2002-11-12 2007-08-22 三井化学株式会社 润滑油组合物和适用于内燃机的润滑油
ES2584163T3 (es) * 2003-03-28 2016-09-26 The Lubrizol Corporation Composiciones mejoradoras de la viscosidad que proporcionan al aceite lubricante características mejoradas a baja temperatura
US7776804B2 (en) 2005-03-16 2010-08-17 The Lubrizol Corporation Viscosity improver compositions providing improved low temperature characteristics to lubricating oil
JP4540963B2 (ja) * 2003-10-20 2010-09-08 三井化学株式会社 潤滑油用粘度調整剤および潤滑油組成物
JP4620966B2 (ja) * 2004-04-26 2011-01-26 三井化学株式会社 駆動系潤滑油組成物
JPWO2006028169A1 (ja) 2004-09-10 2008-05-08 三井化学株式会社 潤滑油用粘度調整剤、潤滑油用添加剤組成物および潤滑油組成物
US20070191242A1 (en) * 2004-09-17 2007-08-16 Sanjay Srinivasan Viscosity modifiers for lubricant compositions
JP4749747B2 (ja) * 2005-03-25 2011-08-17 三井化学株式会社 潤滑油用粘度調整剤
WO2006101206A1 (ja) * 2005-03-25 2006-09-28 Mitsui Chemicals, Inc. 動力伝達系用潤滑油の粘度調整剤および動力伝達系用潤滑油組成物
EP2075268B1 (de) * 2006-10-20 2015-07-08 Mitsui Chemicals, Inc. Copolymer, schmieröl-viskositätsmodifikator und schmierölzusammensetzung
US20120028865A1 (en) * 2010-07-28 2012-02-02 Sudhin Datta Viscosity Modifiers Comprising Blends of Ethylene-Based Copolymers
US8378042B2 (en) * 2009-04-28 2013-02-19 Exxonmobil Chemical Patents Inc. Finishing process for amorphous polymers
US9045574B2 (en) 2009-09-28 2015-06-02 Mitsui Chemicals, Inc. Viscosity modifier for lubricating oils, additive composition for lubricating oils, and lubricating oil composition
US8415284B2 (en) * 2009-11-05 2013-04-09 Afton Chemical Corporation Olefin copolymer VI improvers and lubricant compositions and uses thereof
CN102741303B (zh) 2010-01-22 2015-05-06 埃克森美孚化学专利公司 润滑油组合物及其制造方法
US9534188B2 (en) 2012-04-12 2017-01-03 Mitsui Chemicals, Inc. Lubricating oil composition
EP3019536B1 (de) * 2013-07-09 2024-01-24 Dow Global Technologies LLC Ethylen/alpha-olefin-interpolymere mit verbesserter pelletfliessfähigkeit
ES2690644T3 (es) 2013-07-11 2018-11-21 Mitsui Chemicals, Inc. Material de amortiguación de vibraciones y composición de polímero
FR3011246A1 (fr) * 2013-09-27 2015-04-03 Total Marketing Services Composition lubrifiante a base de copolymeres ethylene/propylene
SG11201607626WA (en) * 2014-03-19 2016-10-28 Lubrizol Corp Lubricants containing blends of polymers
BR112016021008A2 (pt) 2014-03-28 2017-10-03 Mitsui Chemicals Inc Modificador de viscosidade para óleos lubrificantes , composição de aditivo para óleos lubrificantes , e composição de óleo lubrificante
US20180320102A1 (en) 2015-11-09 2018-11-08 Mitsui Chemicals, Inc. Viscosity modifier for lubricating oils, additive composition for lubricating oils, and lubricating oil compositions
US11279780B2 (en) * 2016-05-27 2022-03-22 Cornell University Polyethylene and polypropylene block copolymers
US11299567B2 (en) 2016-07-14 2022-04-12 Exxonmobil Chemical Patents Inc. Lubricating oil compositions comprising dual metallocene-catalyzed bimodal copolymer compositions useful as viscosity modifiers
WO2018044275A1 (en) 2016-08-30 2018-03-08 Dow Global Technologies Llc Ethylene/c3-c6 alpha-olefin interpolymers with improved pellet flowability
US11162050B2 (en) 2016-12-27 2021-11-02 Mitsui Chemicals, Inc. Lubricating oil composition, viscosity modifier for lubricating oil, and additive composition for lubricating oil
US20200362263A1 (en) 2017-11-21 2020-11-19 Exxonmobil Chemical Patents Inc. Bimodal Copolymer Compositions Useful as Oil Modifiers
JP7295112B2 (ja) 2017-12-13 2023-06-20 シェブロン・オロナイト・カンパニー・エルエルシー 油改質剤として有用なバイモーダルコポリマー組成物及びそれを含む潤滑油
EP3783087B1 (de) 2018-04-17 2022-11-09 Mitsui Chemicals, Inc. Schmierölzusammensetzung und viskositätsmodifikator für schmieröl
EP3856805A1 (de) * 2018-09-28 2021-08-04 Dow Global Technologies LLC Tetrafunktionelle langkettige verzweigte polymere auf ethylenbasis
KR20210139401A (ko) 2019-03-26 2021-11-22 미쓰이 가가쿠 가부시키가이샤 윤활유 조성물 및 그의 제조 방법
EP3950899A4 (de) 2019-03-26 2022-08-17 Mitsui Chemicals, Inc. Schmierölzusammensetzung und verfahren zu ihrer herstellung
EP3950893A4 (de) 2019-03-26 2022-08-17 Mitsui Chemicals, Inc. Schmierölzusammensetzung für industriegetriebe und verfahren zu deren herstellung
KR20210139402A (ko) 2019-03-26 2021-11-22 미쓰이 가가쿠 가부시키가이샤 내연 기관용 윤활유 조성물 및 그의 제조 방법
KR20210139404A (ko) 2019-03-26 2021-11-22 미쓰이 가가쿠 가부시키가이샤 내연 기관용 윤활유 조성물 및 그의 제조 방법
KR102580620B1 (ko) 2019-03-29 2023-09-19 미쓰이 가가쿠 가부시키가이샤 수지 조성물
JP7219663B2 (ja) * 2019-04-16 2023-02-08 三井化学株式会社 潤滑油用粘度調整剤および潤滑油組成物
US11873462B2 (en) 2019-08-29 2024-01-16 Mitsui Chemicals, Inc. Lubricating oil composition
WO2021070811A1 (ja) 2019-10-07 2021-04-15 三井化学株式会社 エチレン・α－オレフィン共重合体組成物およびその用途
CN113024702B (zh) * 2019-12-25 2023-02-24 中国石油天然气股份有限公司 乙烯-α-烯烃共聚物、其制备方法及含有其的润滑油粘度指数改进剂
JP7341256B2 (ja) 2020-01-30 2023-09-08 三井化学株式会社 ポリアミド組成物

Family Cites Families (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1205243A (en) 1966-09-23 1970-09-16 Du Pont Oil compositions
US3551336A (en) 1969-06-30 1970-12-29 Exxon Research Engineering Co Lubricant containing ethylene-alpha-olefin polymer
NL170019C (nl) 1970-06-02 Exxon Research Engineering Co Werkwijze ter bereiding van een smeeroliemengsel.
US4146492A (en) * 1976-04-02 1979-03-27 Texaco Inc. Lubricant compositions which exhibit low degree of haze and methods of preparing same
US4933099A (en) * 1979-01-09 1990-06-12 Exxon Research And Engineering Company Oil compositions containing ethylene copolymers
DE3270823D1 (en) * 1981-01-13 1986-06-05 Mitsui Petrochemical Ind Novel ethylene/alpha-olefin copolymer
US4959436A (en) * 1983-06-15 1990-09-25 Exxon Research And Engineering Co. Narrow MWD alpha-olefin copolymers
US4540753A (en) * 1983-06-15 1985-09-10 Exxon Research & Engineering Co. Narrow MWD alpha-olefin copolymers
US4507515A (en) 1983-12-21 1985-03-26 Exxon Research & Engineering Co. Lubricating oil compositions containing ethylene-alpha-olefin polymers of controlled sequence distribution and molecular heterogeneity
US4666619A (en) 1984-12-17 1987-05-19 Exxon Research & Engineering Co. Ethylene polymer useful as a lubricating oil viscosity modifier E-25
EP0200351B2 (de) * 1985-03-26 1996-10-16 Mitsui Petrochemical Industries, Ltd. Flüssiges statisches Ethylencopolymer, Verfahren zur Herstellung und Anwendung desselben
JPH086113B2 (ja) * 1986-07-11 1996-01-24 三井石油化学工業株式会社 作動油
US5328624A (en) * 1987-06-16 1994-07-12 Exxon Chemical Patents Inc. Stabilized grafted ethylene copolymer additive useful in oil compositions
US4804794A (en) * 1987-07-13 1989-02-14 Exxon Chemical Patents Inc. Viscosity modifier polymers
US5218071A (en) * 1988-12-26 1993-06-08 Mitsui Petrochemical Industries, Ltd. Ethylene random copolymers
US4963279A (en) 1989-02-28 1990-10-16 Exxon Chemical Patents Inc. C14-carboxylate polymer and viscosity index improver containing oleaginous compositions
US5068047A (en) * 1989-10-12 1991-11-26 Exxon Chemical Patents, Inc. Visosity index improver
US5151204A (en) * 1990-02-01 1992-09-29 Exxon Chemical Patents Inc. Oleaginous compositions containing novel ethylene alpha-olefin polymer viscosity index improver additive
US5094766A (en) * 1990-07-02 1992-03-10 Texaco Inc. Dispersant-antioxidant viscosity index improver
US5217636A (en) * 1992-03-10 1993-06-08 Albright & Wilson Americas Inc. Lubricating oil viscosity index improver composition
JPH0696624A (ja) 1992-09-11 1994-04-08 Furukawa Electric Co Ltd:The 水密性絶縁電線
CA2127918A1 (en) * 1993-08-02 1995-02-03 Maria Magdalena Kapuscinski Dimensionally stable solid polymer blend and a lubricating oil composition containing same
US5641736A (en) * 1995-09-28 1997-06-24 Mobil Oil Corporation Synergistic pour point depressant combinations and hydrocarbon lube mixtures
IT1290848B1 (it) 1996-12-12 1998-12-14 Additivi Per Carburanti Srl So Copolimeri etilene/alfa-olefine
EP0902081B1 (de) 1997-01-31 2003-12-03 Mitsui Chemicals, Inc. Schmieröl oder schmierölzusammensetzung und heizölzusammensetzung
US6124513A (en) * 1997-06-20 2000-09-26 Pennzoil-Quaker State Company Ethylene-alpha-olefin polymers, processes and uses
US6110880A (en) * 1997-06-24 2000-08-29 Exxon Chemical Patents Inc Polyolefin block copolymer viscosity modifier

Also Published As

Publication number Publication date
DE69926015T2 (de) 2006-05-18
WO2000034420A1 (fr) 2000-06-15
KR20010112228A (ko) 2001-12-20
KR100615474B1 (ko) 2006-08-25
BR9916013A (pt) 2001-12-18
EP1148115A1 (de) 2001-10-24
ATE298780T1 (de) 2005-07-15
CN1329656A (zh) 2002-01-02
EP1148115A4 (de) 2002-05-29
US6525007B2 (en) 2003-02-25
US20020055445A1 (en) 2002-05-09
CN1159419C (zh) 2004-07-28
BR9916013B1 (pt) 2011-11-01
EP1148115B1 (de) 2005-06-29
JP4427669B2 (ja) 2010-03-10

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