EP0140274A3 - Lubricating oil additives - Google Patents

Lubricating oil additives Download PDF

Info

Publication number: EP0140274A3
Authority: EP; European Patent Office
Prior art keywords: lubricating oil; oil additives; additives; lubricating; oil
Prior art date: 1983-10-28
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.): Granted

Application number

EP84112445A

Other languages

German (de)

Other versions

EP0140274B1 (en

EP0140274A2 (en

EP0140274B2 (en

Inventor

Horst Dr. Dipl.-Chem. Pennewiss

Heinz Jost

Helmut Knoll

Ulrich Dr. Dipl.-Phys. Schodel

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.)

Roehm GmbH Darmstadt

Original Assignee

Roehm GmbH Darmstadt

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.)

1983-10-28

Filing date

1984-10-16

Publication date

1987-05-13

Family has litigation

First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6212932&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0140274(A3) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.

1984-10-16 Application filed by Roehm GmbH Darmstadt filed Critical Roehm GmbH Darmstadt

1985-05-08 Publication of EP0140274A2 publication Critical patent/EP0140274A2/en

1987-05-13 Publication of EP0140274A3 publication Critical patent/EP0140274A3/en

1990-12-05 Publication of EP0140274B1 publication Critical patent/EP0140274B1/en

1994-06-22 Application granted granted Critical

1994-06-22 Publication of EP0140274B2 publication Critical patent/EP0140274B2/en

2004-10-16 Anticipated expiration legal-status Critical

Status Expired - Lifetime legal-status Critical Current

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
- C10M143/00—Lubricating compositions characterised by the additive being a macromolecular hydrocarbon or such hydrocarbon 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
- C10M149/00—Lubricating compositions characterised by the additive being a macromolecular compound containing nitrogen
- C10M149/02—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- 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
- 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
- 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
- C10M2205/06—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing conjugated dienes
- 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
- C10M2217/00—Organic macromolecular compounds containing nitrogen as ingredients in lubricant compositions
- C10M2217/02—Macromolecular compounds obtained from nitrogen containing monomers by reactions only involving carbon-to-carbon unsaturated bonds
- 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
- C10M2217/00—Organic macromolecular compounds containing nitrogen as ingredients in lubricant compositions
- C10M2217/02—Macromolecular compounds obtained from nitrogen containing monomers by reactions only involving carbon-to-carbon unsaturated bonds
- C10M2217/022—Macromolecular compounds obtained from nitrogen containing monomers by reactions only involving carbon-to-carbon unsaturated bonds containing monomers having an unsaturated radical bound to an amino group
- C10M2217/023—Macromolecular compounds obtained from nitrogen containing monomers by reactions only involving carbon-to-carbon unsaturated bonds containing monomers having an unsaturated radical bound to an amino group the amino group containing an ester bond
- 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
- C10M2217/00—Organic macromolecular compounds containing nitrogen as ingredients in lubricant compositions
- C10M2217/02—Macromolecular compounds obtained from nitrogen containing monomers by reactions only involving carbon-to-carbon unsaturated bonds
- C10M2217/024—Macromolecular compounds obtained from nitrogen containing monomers by reactions only involving carbon-to-carbon unsaturated bonds containing monomers having an unsaturated radical bound to an amido or imido group
- 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
- C10M2217/00—Organic macromolecular compounds containing nitrogen as ingredients in lubricant compositions
- C10M2217/02—Macromolecular compounds obtained from nitrogen containing monomers by reactions only involving carbon-to-carbon unsaturated bonds
- C10M2217/028—Macromolecular compounds obtained from nitrogen containing monomers by reactions only involving carbon-to-carbon unsaturated bonds containing monomers having an unsaturated radical bound to a nitrogen-containing hetero ring
- 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
- C10M2217/00—Organic macromolecular compounds containing nitrogen as ingredients in lubricant compositions
- C10M2217/06—Macromolecular compounds obtained by functionalisation op polymers with a nitrogen containing compound

Landscapes

Chemical & Material Sciences (AREA)
Chemical Kinetics & Catalysis (AREA)
General Chemical & Material Sciences (AREA)
Oil, Petroleum & Natural Gas (AREA)
Organic Chemistry (AREA)
Lubricants (AREA)

EP84112445A 1983-10-28 1984-10-16 Lubricating oil additives Expired - Lifetime EP0140274B2 (en)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
DE19833339103 DE3339103A1 (en)	1983-10-28	1983-10-28	ADDITIVES FOR LUBRICANTS
DE3339103		1983-10-28

Publications (4)

Publication Number	Publication Date
EP0140274A2 EP0140274A2 (en)	1985-05-08
EP0140274A3 true EP0140274A3 (en)	1987-05-13
EP0140274B1 EP0140274B1 (en)	1990-12-05
EP0140274B2 EP0140274B2 (en)	1994-06-22

Family

ID=6212932

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP84112445A Expired - Lifetime EP0140274B2 (en)	1983-10-28	1984-10-16	Lubricating oil additives

Country Status (4)

Country	Link
US (1)	US4968444A (en)
EP (1)	EP0140274B2 (en)
JP (1)	JPH0631382B2 (en)
DE (2)	DE3339103A1 (en)

Families Citing this family (41)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE3544061A1 (en) *	1985-12-13	1987-06-19	Roehm Gmbh	HIGHLY STABLE MULTI-RANGE LUBRICANTS WITH IMPROVED VISCOSITY INDEX
DE3607444A1 (en) *	1986-03-07	1987-09-10	Roehm Gmbh	ADDITIVES FOR MINERAL OILS WITH IMPROVEMENT EFFECT
DE3613992C2 (en) *	1986-04-25	2000-05-04	Roehm Gmbh	Additives for paraffinic lubricating oils
JPH078990B2 (en) *	1987-08-19	1995-02-01	ペンゾイル・プロダクツ・カンパニー	Methacrylate pour point depressants and compositions
US4956111A (en) *	1987-08-19	1990-09-11	Pennzoil Products Company	Methacrylate pour point depressants and compositions
US4844829A (en) *	1987-08-19	1989-07-04	Pennzoil Products Company	Methacrylate pour point depressants and compositions
US5349019A (en) *	1988-12-24	1994-09-20	Hoechst	New copolymers, mixtures thereof with poly(meth)acrylate esters and the use thereof for improving the cold fluidity of crude oils
DE3905681A1 (en) *	1989-02-24	1990-08-30	Basf Ag	CONCENTRATED MIXTURES OF GAPPOPOLYMERISATS FROM ESTERS OF UNSATURATED ACIDS AND ETHYLENE-VINYLESTER COPOLYMERISATS
DE3930142A1 (en) *	1989-09-09	1991-03-21	Roehm Gmbh	DISPERGING VISCOSITY INDEX IMPROVERS
US5149452A (en) *	1990-12-19	1992-09-22	Exxon Research And Engineering Company	Wax isomerate having a reduced pour point
FR2679444B1 (en) *	1991-07-25	1995-04-07	Oreal	USE AS OIL THICKENING AGENTS, IN AN OILY COSMETIC COMPOSITION, OF A COMBINATION OF TWO COPOLYMERS.
US5229021A (en) *	1991-12-09	1993-07-20	Exxon Research & Engineering Company	Wax isomerate having a reduced pour point
US5534175A (en) *	1992-12-28	1996-07-09	The Lubrizol Corporation	Copolymers of unsaturated fatty esters, their use as viscosity improver and lubricating oil containing said copolymers
HUT69298A (en)	1993-07-23	1995-09-28	Rohm & Haas	Method of making a copolymer useful as viscosity index improving additive for hydraulic fluids
US5416162A (en) *	1993-09-20	1995-05-16	Rohm And Haas Company	Compatibilizer for a viscosity index improving polymer blend
JP2748104B2 (en) *	1994-03-08	1998-05-06	三洋化成工業株式会社	Viscosity index improver and lubricating oil
US6228819B1 (en)	1994-04-14	2001-05-08	Rohm And Haas Company	Process for making a viscosity index improving copolymer
IT1270673B (en) *	1994-10-19	1997-05-07	Euron Spa	MULTIFUNCTIONAL ADDITIVE FOR LUBRICANTS COMPATIBLE WITH FLUOROELASTOMERS
US5520832A (en) *	1994-10-28	1996-05-28	Exxon Research And Engineering Company	Tractor hydraulic fluid with wide temperature range (Law180)
US5821313A (en)	1995-06-19	1998-10-13	The Lubrizol Corporation	Dispersant-viscosity improvers for lubricating oil compositions
US5969068A (en) *	1995-06-19	1999-10-19	The Lubrizol Corporation	Dispersant-viscosity improvers for lubricating oil compositions
US6140431A (en) *	1997-02-27	2000-10-31	Rohm And Haas Company	Process for preparing continuously variable-composition copolymers
US5807815A (en) *	1997-07-03	1998-09-15	Exxon Research And Engineering Company	Automatic transmission fluid having low Brookfield viscosity and high shear stability
KR100517190B1 (en)	1997-08-22	2005-09-28	로막스 아디티페스 게엠베하	Method for maintaining low-temperature fluidity of lubricating oil composition, a concentrate for use in lubricating oil composition and a lubricating oil composition
US6124249A (en)	1998-12-22	2000-09-26	The Lubrizol Corporation	Viscosity improvers for lubricating oil compositions
US6255261B1 (en) *	1999-09-22	2001-07-03	Ethyl Corporation	(Meth) acrylate copolymer pour point depressants
US6323164B1 (en)	2000-11-01	2001-11-27	Ethyl Corporation	Dispersant (meth) acrylate copolymers having excellent low temperature properties
US20040077509A1 (en) *	2002-08-02	2004-04-22	Tsuyoshi Yuki	Viscosity index improver and lube oil containing the same
US7378379B2 (en) *	2003-06-10	2008-05-27	The Lubrizol Corporation	Functionalized polymer composition for grease
US20060252660A1 (en) *	2005-05-09	2006-11-09	Akhilesh Duggal	Hydrolytically stable viscosity index improves
CN101679902B (en) *	2007-06-08	2013-06-12	东邦化学工业株式会社	Pour point depressant for lubricant
WO2011084997A1 (en) *	2010-01-05	2011-07-14	Novomer Inc.	Hydrocarbon additives
US9481849B2 (en)	2010-04-26	2016-11-01	Evonik Oil Additives Gmbh	Polymer useful as viscosity index improver
WO2012056022A1 (en)	2010-10-29	2012-05-03	Evonik Rohmax Additives Gmbh	A diesel motor having improved properties
WO2012076285A1 (en)	2010-12-10	2012-06-14	Evonik Rohmax Additives Gmbh	A lubricant composition
WO2013062924A2 (en) *	2011-10-27	2013-05-02	The Lubrizol Corporation	Lubricating composition containing an esterified polymer
US20130340325A1 (en) *	2012-06-22	2013-12-26	Baker Hughes Incorporated	Charged Block Co-polymers as Pour Point Depressants
EP3097167B1 (en) *	2014-01-21	2019-06-19	Evonik Oil Additives GmbH	Pour point depressants for improving the low-temperature viscosity of aged lubricating oil
CN105524209B (en) *	2014-10-24	2017-09-29	中国石油化工股份有限公司	Acrylate based copolymer and its application and pour depressant for lubricating oil and preparation method thereof
CN105585657B (en) *	2014-10-24	2018-03-20	中国石油化工股份有限公司	A kind of pour depressant for lubricating oil and preparation method thereof
JP6438069B2 (en) *	2016-04-26	2018-12-12	三洋化成工業株式会社	Lubricating oil composition

Citations (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US2655479A (en) *	1949-01-03	1953-10-13	Standard Oil Dev Co	Polyester pour depressants
FR2407259A1 (en) *	1977-10-26	1979-05-25	Shell Int Research	COMPOSITIONS OF LUBRICATING OILS CONTAINING CERTAIN POLYALCOYLACRYLATES OR METHACRYLATES

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Publication number	Priority date	Publication date	Assignee	Title
US2114233A (en) *	1933-05-22	1938-04-12	Rohm & Haas	Polymeric materials
US2091627A (en) *	1934-06-08	1937-08-31	Rohm & Haas	Composition of matter and process
US2100993A (en) *	1934-12-14	1937-11-30	Rohm & Haas	Process for preparing esters and products
US3251775A (en) *	1962-05-24	1966-05-17	Rohm & Haas	Lubricating oil compositions
US3386998A (en) *	1964-05-19	1968-06-04	Rohm & Haas	Nu-alkenoyloxy-2-morpholinones and their corresponding hydrolysis products
US3513096A (en) *	1968-12-03	1970-05-19	Exxon Research Engineering Co	Oil concentrate containing a compatible mixture of polyisobutylene and ethylene-alpha olefin copolymer
US3772196A (en) *	1971-12-03	1973-11-13	Shell Oil Co	Lubricating compositions
PH10685A (en) *	1972-12-29	1977-08-10	Texaco Development Corp	Oil compositions having improved viscosity index and pour paint properties
US4146492A (en) *	1976-04-02	1979-03-27	Texaco Inc.	Lubricant compositions which exhibit low degree of haze and methods of preparing same
US4071407A (en) *	1976-11-16	1978-01-31	The Board Of Trustees Of The University Of Alabama	Novel maltase enzyme produced by a new yeast strain
DE2657570C3 (en) *	1976-12-18	1980-11-20	Bayer Ag, 5090 Leverkusen	Electrochemical cell for the detection of hydrogen sulfide in a gas mixture
DE2835192C2 (en) *	1978-08-11	1986-12-11	Röhm GmbH, 6100 Darmstadt	Lubricating oil additives
DE2905954C2 (en) *	1979-02-16	1982-10-28	Röhm GmbH, 6100 Darmstadt	Concentrated polymer emulsions as viscosity index improvers for mineral oils
DE3544061A1 (en) *	1985-12-13	1987-06-19	Roehm Gmbh	HIGHLY STABLE MULTI-RANGE LUBRICANTS WITH IMPROVED VISCOSITY INDEX

1983
- 1983-10-28 DE DE19833339103 patent/DE3339103A1/en not_active Ceased
1984
- 1984-10-16 EP EP84112445A patent/EP0140274B2/en not_active Expired - Lifetime
- 1984-10-16 DE DE8484112445T patent/DE3483714D1/en not_active Expired - Lifetime
- 1984-10-24 JP JP59222331A patent/JPH0631382B2/en not_active Expired - Fee Related
1988
- 1988-12-27 US US07/291,387 patent/US4968444A/en not_active Expired - Lifetime

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US2655479A (en) *	1949-01-03	1953-10-13	Standard Oil Dev Co	Polyester pour depressants
FR2407259A1 (en) *	1977-10-26	1979-05-25	Shell Int Research	COMPOSITIONS OF LUBRICATING OILS CONTAINING CERTAIN POLYALCOYLACRYLATES OR METHACRYLATES

Also Published As

Publication number	Publication date
US4968444A (en)	1990-11-06
DE3483714D1 (en)	1991-01-17
EP0140274B1 (en)	1990-12-05
EP0140274A2 (en)	1985-05-08
DE3339103A1 (en)	1985-05-09
EP0140274B2 (en)	1994-06-22
JPH0631382B2 (en)	1994-04-27
JPS60110790A (en)	1985-06-17

Publication	Publication Date	Title
EP0140274A3 (en)	1987-05-13	Lubricating oil additives
DE3379663D1 (en)	1989-05-24	Lubricating oil additives
GB8432105D0 (en)	1985-01-30	Lubricant additives
JPS57177095A (en)	1982-10-30	Lubricant oil additive
PL246163A1 (en)	1985-01-30	Anhydrous oil lubricant
DE3363432D1 (en)	1986-06-12	Lubricating oil composition
DE3375156D1 (en)	1988-02-11	Lubricating oil composition
DE3370819D1 (en)	1987-05-14	Lubricating oil composition
JPS57185392A (en)	1982-11-15	Lubricant oil composition
GB8320546D0 (en)	1983-09-01	Lubricating oil compositions
DE3571642D1 (en)	1989-08-24	Lubricant additives
HK61894A (en)	1994-07-01	Lubricant oil additive
GB2134538B (en)	1986-03-12	Lubricating oils
DE3378730D1 (en)	1989-01-26	Lubricating oil composition
DE3460770D1 (en)	1986-10-23	Lubricant compositions containing solid additives
ZA897889B (en)	1991-06-26	Lubricating oil additives
GB8623649D0 (en)	1986-11-05	Additives for lubricating oils
GB8314039D0 (en)	1983-06-29	Lubricating oil additives
GB8404402D0 (en)	1984-03-28	Stabilization of lubricating oil additives
ZA834111B (en)	1984-03-28	Lubricating oil composition
GB8612865D0 (en)	1986-07-02	Oil additives
GB8505261D0 (en)	1985-04-03	Lubricant additive
GB2127431B (en)	1985-11-20	Lubricating oil composition
GB2124624B (en)	1986-04-16	Lubricating oil additive
GB8325549D0 (en)	1983-10-26	Lubricating oil

Legal Events

Date	Code	Title	Description
1985-03-09	PUAI	Public reference made under article 153(3) epc to a published international application that has entered the european phase	Free format text: ORIGINAL CODE: 0009012
1985-05-08	AK	Designated contracting states	Designated state(s): BE DE FR GB IT NL
1987-03-26	PUAL	Search report despatched	Free format text: ORIGINAL CODE: 0009013
1987-05-13	AK	Designated contracting states	Kind code of ref document: A3 Designated state(s): BE DE FR GB IT NL
1987-10-07	17P	Request for examination filed	Effective date: 19870807
1988-05-04	17Q	First examination report despatched	Effective date: 19880322
1990-10-20	GRAA	(expected) grant	Free format text: ORIGINAL CODE: 0009210
1990-12-05	AK	Designated contracting states	Kind code of ref document: B1 Designated state(s): BE DE FR GB IT NL
1990-12-20	ITF	It: translation for a ep patent filed
1991-01-11	ET	Fr: translation filed
1991-01-17	REF	Corresponds to:	Ref document number: 3483714 Country of ref document: DE Date of ref document: 19910117
1991-04-10	GBT	Gb: translation of ep patent filed (gb section 77(6)(a)/1977)
1991-09-09	PLBI	Opposition filed	Free format text: ORIGINAL CODE: 0009260
1991-10-30	26	Opposition filed	Opponent name: BASF AKTIENGESELLSCHAFT, LUDWIGSHAFEN Effective date: 19910829
1991-12-16	NLR1	Nl: opposition has been filed with the epo	Opponent name: BASF AG.
1992-10-31	ITTA	It: last paid annual fee
1994-05-06	PUAH	Patent maintained in amended form	Free format text: ORIGINAL CODE: 0009272
1994-05-06	STAA	Information on the status of an ep patent application or granted ep patent	Free format text: STATUS: PATENT MAINTAINED AS AMENDED
1994-06-22	27A	Patent maintained in amended form	Effective date: 19940622
1994-06-22	AK	Designated contracting states	Kind code of ref document: B2 Designated state(s): BE DE FR GB IT NL
1994-07-06	GBTA	Gb: translation of amended ep patent filed (gb section 77(6)(b)/1977)	Effective date: 19940608
1994-08-16	NLR2	Nl: decision of opposition
1994-08-19	ET3	Fr: translation filed ** decision concerning opposition
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