EP0000697B1 - Gelförmige Schmiermittelzusammensetzung bestehend aus Oel und Polymethylpenten - Google Patents

Gelförmige Schmiermittelzusammensetzung bestehend aus Oel und Polymethylpenten Download PDF

Info

Publication number
EP0000697B1
EP0000697B1 EP78100269A EP78100269A EP0000697B1 EP 0000697 B1 EP0000697 B1 EP 0000697B1 EP 78100269 A EP78100269 A EP 78100269A EP 78100269 A EP78100269 A EP 78100269A EP 0000697 B1 EP0000697 B1 EP 0000697B1
Authority
EP
European Patent Office
Prior art keywords
oil
temperature
lubricating
pmp
weight
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
Application number
EP78100269A
Other languages
English (en)
French (fr)
Other versions
EP0000697A1 (de
Inventor
John Ronald Rumiers
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.)
SKF Industries Inc
Original Assignee
SKF Industries Inc
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 SKF Industries Inc filed Critical SKF Industries Inc
Publication of EP0000697A1 publication Critical patent/EP0000697A1/de
Application granted granted Critical
Publication of EP0000697B1 publication Critical patent/EP0000697B1/de
Expired legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/02Parts of sliding-contact bearings
    • F16C33/04Brasses; Bushes; Linings
    • F16C33/06Sliding surface mainly made of metal
    • F16C33/10Construction relative to lubrication
    • 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
    • C10M111/00Lubrication compositions characterised by the base-material being a mixture of two or more compounds covered by more than one of the main groups C10M101/00 - C10M109/00, each of these compounds being essential
    • C10M111/04Lubrication compositions characterised by the base-material being a mixture of two or more compounds covered by more than one of the main groups C10M101/00 - C10M109/00, each of these compounds being essential at least one of them being a macromolecular organic compound
    • 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
    • C10M143/00Lubricating compositions characterised by the additive being a macromolecular hydrocarbon or such hydrocarbon modified by oxidation
    • C10M143/08Lubricating compositions characterised by the additive being a macromolecular hydrocarbon or such hydrocarbon modified by oxidation containing aliphatic monomer having more than 4 carbon atoms
    • 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
    • C10M2205/00Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions
    • C10M2205/02Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers
    • C10M2205/028Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers containing aliphatic monomers having more than four carbon atoms
    • 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
    • C10M2207/00Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/28Esters
    • C10M2207/282Esters of (cyclo)aliphatic oolycarboxylic 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
    • C10M2207/00Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/28Esters
    • C10M2207/34Esters having a hydrocarbon substituent of thirty or more carbon atoms, e.g. substituted succinic acid derivatives
    • 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
    • C10N2020/00Specified physical or chemical properties or characteristics, i.e. function, of component of lubricating compositions
    • C10N2020/01Physico-chemical properties
    • 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
    • C10N2040/00Specified use or application for which the lubricating composition is intended
    • C10N2040/02Bearings
    • 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
    • C10N2050/10Form in which the lubricant is applied to the material being lubricated semi-solid; greasy

Definitions

  • Scott and Swartz U.S. Patent 3,913,992 issued October 21, 1975, discloses a method and apparatus employing a mass of grease placed on a dispensing surface on a rotating member in such a way that the centrifugal force of the grease against the dispensing surface causes oil to be released from the grease under use conditions.
  • the DOS 1,900,168 teaches a process for thickening oil by heating a specified dispersion of a polymer in oil to a temperature of 130-170°C.
  • the size of the particles dispersed shall be in the range 0,02-0,5 microns. This process does not give any solid gel, but results in a highly viscous grease.
  • a process for the production of a solid lubricating gel which is characterized in blending 50-10% by weight of a polymethylpentene having an average molecular weight of 3.5 millions and a particle size of 105-250 microns with 50-90% by weight and an oil of lubricating viscosity, heating said blend at a temperature in the range of 10-50°C above the initial softening temperature of the polymer until the blend becomes transparent and sticky, and cooling the blend.
  • the oil is preferably a synthetic hydrocarbon oil with a viscosity of 15 to 300 mm 2 /s at 38°C.
  • the oil content is preferably in the range of 65-75% by weight, and the polymethylpentene content is in the range of 35-25% by weight.
  • the most preferred ratio on the components is an oil content of 70% by weight and a polymethylpentene content of 30% by weight.
  • the oil shall then have a viscosity of 30-170 mm 2 /s at 38°C and the polymethylpentene an average molecular weight of 4 millions.
  • compositions obtained through the process according to the invention are provided in the form of firm, tough, solid gels having an oily surface provided by the exudation of oil from the gels.
  • compositions of the invention are made from synthetic hydrocarbon oils having a viscosity in the range from about 20 to about 260 mm 2 /s measured at a temperature of 38°C (100°F).
  • Other known lubricating oils of comparable viscosity may also be employed including the diester oils described in Military Specifications MIL-L-23699B and MIL-L-7808G. These refer to aircraft turbine engine lubricants. Products qualified under these specifications are (respectively) Exxon ETO 2380 and Exxon ETO 2389.
  • Naturally occurring mineral oils may also be employed, but less desirably, since they tend to deteriorate at the high temperatures employed in the preparation of the new lubricating compositions.
  • Especially preferred compositions are obtained from synthetic hydrocarbon oils having a viscosity in the range from about 30 to about 170 mm 2 /s.
  • the polymeric component of the new compositions is known in commerce as polymethylpentene (hereinafter PMP) and generally has an average molecular weight in the range from about 3 to about 5 million; polymer having an average molecular weight of about 4 million having been found to provide excellent products.
  • PMP polymethylpentene
  • This material is available and useful in finely particulate form, i.e. about 105 to 250 microns.
  • the PMP is simply blended with the oil in a conventional blender to form a physical mixture.
  • this mixture may contain about 50 to about 90% oil and about 50 to about 10% PMP, based on the weight of the total mixture.
  • Preferred proportions are about 65 to about 75% oil and about 35 to about 25% PMP; especially desirable products contain about 70% oil and about 30% PMP in the mixture and in the final product.
  • the physical mixture of oil and PMP is then introduced to a mold or into the cavity of a bearing or other article in which it is desired to produce a lubricating mass in situ.
  • the mixture is then cured by heating it to a temperature in the range from about 220°C (428°F) to about 260°C (500°F); the exact temperature in the range from about 10°C (18°F) to about 50°C (90°F) above the initial softening temperature of the particular PMP polymer in the mixture, depending on the liquid phase used.
  • This curing temperature is maintained for about 45 to about 75 minutes until the mixture becomes transparent and sticky. This end point may be determined visually, by trial and error, or by testing the mixture with a metal rod to which the mixture will adhere when properly cured.
  • the final product is then obtained by allowing the cured mixture to cool whereupon it forms a firm, tough, solid gel conforming in shape to the mold or cavity of a bearing or other article in which it was heated.
  • the shaped lubricating mass is formed in situ in a bearing, for example, it is used in that form.
  • Molded shaped articles may be shaped further, if desired, by conventional cutting, abrading or other procedures.
  • the resulting composition or article has an oily surface provided by the exudation of oil from the gel. This exudation of oil continues until the oil supply is exhausted, thus providing prolonged lubrication of any surface in contact with the gel.
  • the new compositions have been found capable of withstanding prolonged use at operating temperatures of up to 145°C (293°F) and, for shorter periods, at up to 160°C (320°F).
  • the oil-polyethylene gel lubricating compositions of the prior art are inoperable at such elevated temperatures, since they become sticky and are discharged from bearings, leaving a dry bearing, at operating temperatures of only about 105°C (221°F) to 110°C (230°F). It will be apparent to those skilled in the art, therefore, that the new PMP containing lubricant compositions and articles constitute a distinct improvement over the prior art for use at operating temperatures above 105°C (221°F).
  • the physical characteristics of the gels of the present invention vary somewhat depending upon the average molecular weight of the PMP and the proportion of that material in the final lubricating composition. Increasing the molecular weight and concentration of PMP in the composition increases the firmness, toughness and rigidity of the gel. These characteristics are correspondingly decreased by decreasing the molecular weight and concentration of the PMP in the composition. It will be seen, therefore, that by varying the molecular weight and concentration of the PMP, lubricating compositions can be produced which are especially adapted for use in particular application.
  • a shaped mass of lubricating gel was prepared containing 70% oil and 30% PMP by weight of the total composition. More specifically 40 grams of PMP was mixed with 93 grams of lubricating oil in a conventional blender for about one minute until a homogeneous mixture was obtained.
  • the PMP was in the form of a 105-215 microns powder which is commercially available under the trade name "TPX Polymer” from Mitsui Petrochemical Inudstries, Mitsui Et Company Incorporated. This PMP has an average molecular weight of 4 million.
  • the oil was a synthetic hydrocarbon oil available from Mobil Oil Corporation under the trade name "SHC624" and had a viscosity of 33 m 2 /s at 38°C (100°F).
  • the oil-PMP mixture was charged to suitable mold with provision for heating, heated to 218°C (425°F) and maintained at that temperature for 60 minutes. The end is reached when the mixture becomes transparent and self-cohesive.
  • Example 1 The general procedure of Example 1 was repeated with the exception that 10% PMP was mixed with 90% Mobil SHC624. The resulting shaped lubricating gel mass was similar to that obtained in Example 1 but was much more flexible due to the decreased percentage of polymer present.
  • Example 2 The general procedure of Example 2 was repeated with the exception that 50% PMP was mixed with 50% Mobil SHC624. The cure temperature was again 218°C (425°F). However, the end point was not obtained until 180 minutes of cure, the resulting shaped lubricating gel mass was similar to that obtained in Example 1 but was much harder and less oil exuding. These effects are attributable to the increase in polymer content.
  • Example 3A The general procedure of Example 3A was repeated with the exception that the cure was 232°C (450°F) for one hour. A similar lubricating gel mass was obtained. The reduction in curing time was related to the increase in curing temperature.
  • Example 1 The general procedure of Example 1 was repeated using the same PMP but substituting Mobil "SHC 629" for the oil used previously. This oil differs primarily in having a viscosity of 160 mm 2 /s at 38°C (100°F). No end point of the cure cycle was reached after 240 minutes using a 218°C (425°F) cure temperature. No shaped mass was formed. This is attributable to the greatly increased viscosity of the lubricant which hinders intimate mixing during the cure cycle at 218°C (425°F).
  • Example 4 The general procedure of Example 4 was repeated except a cure temperature of 254°C (490 0 F) was employed. An end point was reached in 45-50 minutes. The resulting shaped lubricating gel was similar to that obtained in Example 1.
  • Example 1 The general procedure of Example 1 was repeated with the exception that diester lubricant Exxon 2380 was substituted for the previously used oil.
  • the cure cycle was 252°C (485°F) for 60 minutes.
  • the resultant shaped mass was obtained in the form of a tough, resilient solid gel with an oily surface caused by the exudation of oil from the gel.
  • Example 2 The general procedure of Example 1 was repeated with the exception that Mobil DTE XH, a mineral oil based lubricant, with a viscosity of 138 mm 2 /s at 38°C (100°F) was substituted for the previously used oil.
  • Mobil DTE XH a mineral oil based lubricant, with a viscosity of 138 mm 2 /s at 38°C (100°F) was substituted for the previously used oil.
  • the resultant shaped mass was grainy and discolored due to substantial oxidation of the Mobil DTE XH.
  • the speed of rotation of the inner ring of the bearing was increased step-wise in 3600 rpm increments, allowing the apparatus to run until the operating temperature had stabilized at each step. No extraneous heat was supplied, i.e. the test was run under ambient temperature conditions.
  • the bearing speed reached 7200 rpm at which speed the oil-polyethylene gel lubricant failed by the lubricant mass being expelled from the bearing.
  • the bearing temperature was 49°C (120°F) at 7200 rpm.
  • oils of lubricating viscosity in the range of 15 to 300 mm 2 /s or more can be employed in the compositions of the present invention.
  • the invention is operable with lubricants having a mineral oil base, diester oil base, or synthetic hydrocarbon oil base and all three types are represented in the examples.
  • the PMP-oil mixtures can be stabilized so that they may be shipped in that form prior to being fully gelled by the purchaser or final user. This is done by partially curing the PMP-oil mixture by heating to a temperature of about 28° to 42°C (50° to 75°F) below the curing temperature of the particular mixture and maintaining this temperature for a period of about 15 to 20 minutes to form a partially gelled and stabilized product of grease-like consistency. After shipping and/or storage such stabilized products are curable in the usual way to provide the shaped relatively rigid gels of the invention.
  • the PMP oil mixture of Example 5, containing Mobil SHC 629 which cured at 254°C (490°F) would be heated to about 224°C (435°F) for 15 to 20 minutes to obtain a stabilized mixture for shipping.
  • the curing temperature of the PMP-oil mixtures varies somewhat depending on the identity of the particular oil and its viscosity. In general the higher the viscosity of the oil, the higher the temperature required to achieve an adequate cure.
  • the optimum curing temperature for any particular PMP-oil mixture can of course, be determined by trial and error or by experience. Inasmuch as the compositions of the present invention are curable at temperatures within the range of about 220°C (428°F) to about 260°C (500°F), they may be stabilized by heating for 15 to 20 minutes at temperature within the range from about 178°C (353°F) to about 218°C (425°F).

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Lubricants (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Claims (7)

1. Verfahren zur Herstellung eines festen, gelförmigen Schmiermittels, dadurch gekennzeichnet, dass 50-10 Gewichtsprozent Polymethylpenten mit einem durchschnittlichen Molekulargewicht von 5-5 Millionen und einer Partikelgrösse von 105-250 Mikron mit 50-90 Gewichtsprozent eines Öls mit einer zum Schmieren geeigneten Viskosität gemischt wird, worauf dieses Gemisch auf eine Temperatur von 10-50°C über der beginnenden Erweichungstemperatur des Polymers erwärmt wird bis das Gemisch transparent und zäh wird, wonach das Gemisch gekühlt wird.
2. Verfahren nach Patentanspruch 1, dadurch gekennzeichnet, dass das Gemisch 45-75 Minuten auf einer Temperatur von 220-260°C gehalten wird.
3. Verfahren nach Patentanspruch 1, dadurch gekennzeichnet, dass das 01 ein synthetisches Kohlenwasserstofföl ist.
4. Verfahren nach Patentanspruch 3, dadurch gekennzeichnet, dass das Öl eine Viskosität von 15-300 mm2/s bei 38°C hat.
5. Verfahren nach Patentanspruch 4, dadurch gekennzeichnet, dass der Gehalt von Öl 65-75 Gewichtsprozent und von Polymethylpenten 35-25 Gewichtsprozent ist.
6. Verfahren nach Patentanspruch 4, dadurch gekennzeichnet, dass der Gehalt von Öl 70 Gewichtsprozent und von Polymethylpenten 30 Gewichtsprozent ist.
7. Verfahren nach Anspruch 4, dadurch gekennzeichnet, dass das Öl eine Viskosität von 30-170 mm2/s und das Polymethylpenten ein durchschnittliches Molekulargewicht von 4 Millionen hat.
EP78100269A 1977-07-20 1978-06-29 Gelförmige Schmiermittelzusammensetzung bestehend aus Oel und Polymethylpenten Expired EP0000697B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US05/817,147 US4146487A (en) 1977-07-20 1977-07-20 Lubricating composition
US817147 1977-07-20

Publications (2)

Publication Number Publication Date
EP0000697A1 EP0000697A1 (de) 1979-02-21
EP0000697B1 true EP0000697B1 (de) 1984-11-14

Family

ID=25222434

Family Applications (1)

Application Number Title Priority Date Filing Date
EP78100269A Expired EP0000697B1 (de) 1977-07-20 1978-06-29 Gelförmige Schmiermittelzusammensetzung bestehend aus Oel und Polymethylpenten

Country Status (10)

Country Link
US (1) US4146487A (de)
EP (1) EP0000697B1 (de)
JP (1) JPS5422415A (de)
AU (1) AU515161B2 (de)
CA (1) CA1096367A (de)
DE (1) DE2830136A1 (de)
DK (1) DK153085C (de)
IT (1) IT1112280B (de)
NL (1) NL7806999A (de)
SE (1) SE442872B (de)

Families Citing this family (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4239632A (en) * 1979-03-14 1980-12-16 Skf Industries, Inc. Lubricant composition
JPS55137198A (en) * 1979-04-13 1980-10-25 Ntn Toyo Bearing Co Ltd Lubricating composition for ball-and-roller bearing
EP0036692A1 (de) * 1980-03-24 1981-09-30 SKF Industrial Trading & Development Company B.V. Schmiereinsatzstück für Wälzlager
US4534871A (en) * 1980-03-24 1985-08-13 Skf Industries, Inc. Lubricant insert for rolling bearings
JPS57160595A (en) * 1981-03-31 1982-10-02 Nippon Radiator Co Ltd Manufacture of heat exchanger made of aluminum material
JPS5813930A (ja) * 1981-07-20 1983-01-26 Matsushita Electric Ind Co Ltd 加熱調理器
US4492415A (en) * 1982-03-03 1985-01-08 Skf Industries, Inc. Unitary full complement bearing components containing rolling elements in a self-supporting lubricating matrix
US4915856A (en) * 1987-07-10 1990-04-10 Durafilm Corporation Solid lubricant composition
JP2846398B2 (ja) * 1990-03-15 1999-01-13 古河電気工業株式会社 真空ろう付け用ブレージングシートコイルの製造方法
JP3489586B2 (ja) * 1991-10-25 2004-01-19 オイレス工業株式会社 固体潤滑剤ならびに該固体潤滑剤を埋込んだ摺動部材
US5415791A (en) * 1990-08-02 1995-05-16 Oiles Corporation Lubricating composition and a sliding member comprising the composition
JP2866457B2 (ja) * 1990-08-02 1999-03-08 オイレス工業株式会社 固体潤滑剤ならびに該固体潤滑剤を埋込んだ摺動部材
US6228813B1 (en) 1993-04-30 2001-05-08 Nsk Ltd. Rolling bearing filled with a lubricant-containing polymer and process of the same
JPH07238940A (ja) * 1994-02-28 1995-09-12 Ntn Corp ころ軸受
US5591808A (en) 1994-10-03 1997-01-07 E/M Corporation Acetal-based self lubricating compositions
JP3925579B2 (ja) 1998-02-03 2007-06-06 日本精工株式会社 潤滑剤供給体、並びに前記潤滑剤供給体を備える転がり軸受、リニアガイド装置及びボールねじ装置
US6062271A (en) * 1998-05-22 2000-05-16 Markel Corporation Polymethylpentene cable liner
JP2002212581A (ja) * 2001-01-23 2002-07-31 Koyo Seiko Co Ltd 固形潤滑組成物およびポリマ潤滑剤封入転がり軸受
US7683014B2 (en) * 2001-04-13 2010-03-23 Mitrovich Michael J Process for making a two-part solid lubricant stick
FR2913740B1 (fr) * 2007-03-14 2009-09-04 Cie Engrenages Et Reducteurs M Dispositif d'accouplement flexible
FR2913742B1 (fr) * 2007-03-14 2009-10-30 Cie Engrenages Et Reducteurs M Ressort de liaison pour un dispositif d'accouplement flexible
DE102007013934A1 (de) 2007-03-23 2008-09-25 Schaeffler Kg Transport- und Montagevorrichtung für Wälzkörpersätze
DE102007041549A1 (de) 2007-08-31 2009-03-05 Schaeffler Kg Wälzlager
US20140087980A1 (en) 2012-09-21 2014-03-27 Mpl Technology, Inc. Lubricant compositions
GB2551712A (en) * 2016-06-24 2018-01-03 Titus D O O Dekani Improvements in movement control devices
US10849192B2 (en) * 2017-04-26 2020-11-24 Agc Automotive Americas R&D, Inc. Enclosure assembly for window electrical connections

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT513721A (de) * 1953-01-27 1900-01-01
US3076764A (en) * 1960-09-30 1963-02-05 California Research Corp Isotactic polymers of 4-methyl-1-pentene as grease thickeners
US3547819A (en) * 1964-04-28 1970-12-15 Joseph E Ferri Lubricating composition
US3541011A (en) * 1964-04-28 1970-11-17 Joseph E Ferri Lubricating composition
US3729415A (en) * 1964-04-28 1973-04-24 Ferri J Lubricating composition
FR1604349A (en) * 1968-01-02 1971-10-11 Alkene polymer particles as thickening agents for ointments
JPS4833004A (de) * 1971-08-27 1973-05-07

Also Published As

Publication number Publication date
IT1112280B (it) 1986-01-13
JPS5625480B2 (de) 1981-06-12
EP0000697A1 (de) 1979-02-21
DK153085C (da) 1988-11-07
DE2830136A1 (de) 1979-02-01
DK153085B (da) 1988-06-13
NL7806999A (nl) 1979-01-23
AU515161B2 (en) 1981-03-19
SE7807345L (sv) 1979-01-21
DK322578A (da) 1979-01-21
US4146487A (en) 1979-03-27
JPS5422415A (en) 1979-02-20
SE442872B (sv) 1986-02-03
CA1096367A (en) 1981-02-24
IT7825740A0 (it) 1978-07-17
AU3745578A (en) 1980-01-03

Similar Documents

Publication Publication Date Title
EP0000697B1 (de) Gelförmige Schmiermittelzusammensetzung bestehend aus Oel und Polymethylpenten
US4239632A (en) Lubricant composition
US4357249A (en) Self-lubricating bearing and the like, and method of making same
US4041002A (en) Thermoplastic resin composition
US5714444A (en) Grease composition
DE850047C (de) Abschmierfette
JPH08170091A (ja) 高温使用に適したグリース
US3194762A (en) Extreme pressure lubricant and method for making the same
US3247116A (en) Lubricants containing degraded polytetrafluoroethylene
US3432511A (en) Processing of plastic materials
CA1148926A (en) Lubricating composition
US5908815A (en) Heat resistant grease
US3839209A (en) Organometallic anti-friction compositions and their method of manufacture
GB2249811A (en) High temperature sliding bearing
US3852203A (en) Sliding bearing member
US3717576A (en) Graphite fluoride-synthetic resin composite material
JPH02248496A (ja) 潤滑グリース
US3170878A (en) Grease composition
JP2831541B2 (ja) 摺動シール組成物
EP0108172B1 (de) Dimensionsstabile Strukturelemente mit niedrigem Reibungskoeffizient, und eine Mischung und Verfahren zur Herstellung derselben
US2756212A (en) Siloxyglycol
CA1041076A (en) Friable composition and process
USRE29064E (en) Sliding bearing member
JPS6036180B2 (ja) 潤滑性にすぐれた合成樹脂組成物
JPH05209623A (ja) 焼結含油軸受

Legal Events

Date Code Title Description
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

AK Designated contracting states

Designated state(s): BE CH FR GB LU

17P Request for examination filed
GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Designated state(s): BE CH FR GB LU

ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: LU

Payment date: 19910508

Year of fee payment: 14

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19910520

Year of fee payment: 14

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 19910523

Year of fee payment: 14

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 19910527

Year of fee payment: 14

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19910530

Year of fee payment: 14

EPTA Lu: last paid annual fee
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Effective date: 19920629

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19920629

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Effective date: 19920630

Ref country code: CH

Effective date: 19920630

BERE Be: lapsed

Owner name: SKF INDUSTRIES INC.

Effective date: 19920630

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19920629

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Effective date: 19930226

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST