CN107987924A - A kind of poly bis urea-base grease and preparation method thereof - Google Patents
A kind of poly bis urea-base grease and preparation method thereof Download PDFInfo
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- CN107987924A CN107987924A CN201711188878.2A CN201711188878A CN107987924A CN 107987924 A CN107987924 A CN 107987924A CN 201711188878 A CN201711188878 A CN 201711188878A CN 107987924 A CN107987924 A CN 107987924A
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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
- 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
-
- 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
- C10M115/00—Lubricating compositions characterised by the thickener being a non-macromolecular organic compound other than a carboxylic acid or salt thereof
- C10M115/08—Lubricating compositions characterised by the thickener being a non-macromolecular organic compound other than a carboxylic acid or salt thereof containing nitrogen
-
- 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
- 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
- C10M2205/0206—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers used as base material
-
- 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
- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/10—Carboxylix acids; Neutral salts thereof
- C10M2207/12—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms
- C10M2207/121—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of seven or less carbon atoms
- C10M2207/123—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of seven or less carbon atoms polycarboxylic
-
- 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
- C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
- C10M2215/02—Amines, e.g. polyalkylene polyamines; Quaternary amines
- C10M2215/06—Amines, e.g. polyalkylene polyamines; Quaternary amines having amino groups bound to carbon atoms of six-membered aromatic rings
- C10M2215/064—Di- and triaryl amines
-
- 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
- C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
- C10M2215/10—Amides of carbonic or haloformic acids
- C10M2215/102—Ureas; Semicarbazides; Allophanates
- C10M2215/1026—Ureas; Semicarbazides; Allophanates used as thickening material
-
- 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
- C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
- C10M2215/22—Heterocyclic nitrogen compounds
- C10M2215/223—Five-membered rings containing nitrogen and carbon only
-
- 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
- C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
- C10M2215/22—Heterocyclic nitrogen compounds
- C10M2215/223—Five-membered rings containing nitrogen and carbon only
- C10M2215/224—Imidazoles
-
- 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
- C10M2219/04—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions containing sulfur-to-oxygen bonds, i.e. sulfones, sulfoxides
- C10M2219/044—Sulfonic acids, Derivatives thereof, e.g. neutral 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
- 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
- C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
- C10N2030/12—Inhibition of corrosion, e.g. anti-rust agents or anti-corrosives
-
- 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
- C10N2040/02—Bearings
-
- 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
- C10N2050/00—Form in which the lubricant is applied to the material being lubricated
- C10N2050/10—Semi-solids; greasy
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Lubricants (AREA)
Abstract
The present invention relates to a kind of composition of allophanamide base grease, it is by oily based on Synthin oil, and the allophanamide for accounting for lubricating grease gross weight 12%~17% is thickening agent, and the auxiliary agents such as antioxidant, antirust agent are added at the same time in component.The allophanamide base grease meets relatively narrow consistency range limitation, works micro- cone penetration in the range of 64~72；There is good high temperature performance and barrier propterty at the same time, can the long-time service under 30 DEG C~120 DEG C scopes, marine environment.
Description
Technical field
The present invention relates to a kind of composition of allophanamide base grease, belong to the preparing technical field of lubriation material.
Background technology
With the continuous development of contemporary industry technology, more and more mechanical equipments need wider temperature range, compared with
Operated under the harsh conditions such as high load.For complicated and diversified mechanical structure and working environment, complexity is proposed to lubricating grease
Comprehensive performance requirement.Polyureas base grease be it is a kind of disclosure satisfy that wider temperature in use demand, excellent lubricating properties it is new
Type lubricating grease, is designed modification to the thickening agent structure of polyureas base grease or different additives is added in system
The lubrication material for the excellent combination property for having excellent extreme pressure property, high temperature performance, mechanical stability and rust-preventing characteristic concurrently can be prepared
Material.High-performance polyureas base grease for meeting different institutions requirement has substantial amounts of related patents to report.But at present this
The research of a little lubricating grease, which more concentrates on, improves polyureas base grease resistance to elevated temperatures, extreme pressure property, mechanical stability etc..Patent
Application No. CN200910191037.6, CN201010505464.X and Patent No. US4026890, US4668411,
US4692255 etc. reports high temperature resistant polyureas base grease；Add borate, alkali metal, the phosphoric acid of alkaline-earth metal of alkali metal
Salt, sulphate complex, Phos acids additive, calcium carbonate etc. improve the extreme pressure property of polyureas base grease, relevant special
Profit have Patent No. US332523, US4065395, US4100081, US4107058, US4155858, US4675121,
The patent of US4787992, US966255 etc..Acylated olefin class amine, polyol etc. is added in polyurea thickening agent molecule
Organic polymer can improve the stability of polyureas molecular structure, relevant report have Patent No. US868839, US4104177,
US4261844, US4436649, US4661276 etc..However, different application condition proposes lubricating grease different performance requirements,
For the relatively low large scale bearing arrangement of running speed, it is desirable to which on the one hand lubricating grease has relatively low staring torque to be transported easy to bearing
Turn, the attachment on the other hand requiring lubricating grease to have certain denseness to maintain it on bearing, ensure that bearing operation process does not get rid of fat,
This just has more stringent restriction for grease consistency, it is therefore desirable to controls the ratio of long-chain organic amine and short chain organic amine.
There is more report both at home and abroad for allophanamide base grease, CN201380010619.4, CN201280009920.9,
CN201210114760.6、CN201010505464.X、CN200780040185.7、CN200810063346.0、
CN99106163.2、JP20070074897、EP96302647、US9601981、JP19920042228、US07547880、
JP19820069141, two urea-base greases in these patent reports are emphasized the resistance to elevated temperatures of lubricating grease, therefore, are being moistened
Organic amine includes aromatic amine in consistent lubricant.For meeting lubricating grease by controlling the ratio of long-chain organic amine and short chain organic amine
The research of certain consistency requirement is rarely reported.
The object of the present invention is to provide a kind of new grease composition.The lubricating grease is allophanamide base grease, passes through control
Organic amine ratio, can meet relatively narrow consistency range requirement, work micro- cone penetration in the range of 64~72 so that bearing
Operating staring torque is low, and operation process does not get rid of fat.
There can be good high temperature performance it is also another object of the present invention to provide a kind of grease composition, can
The long-time service in the range of -30 DEG C~120 DEG C.
It is a further object to provide a kind of grease composition, it has good rustless property, mechanically stable concurrently
The comprehensive performances such as property, and prepare easy, safe and non-toxic.
Technology contents
The present invention be exactly for above-mentioned prior art situation and need and design provide a kind of allophanamide base grease and its
Preparation method, makes lubricating grease disclosure satisfy that relatively narrow consistency range requirement, and has excellent mechanical stability so that bearing is transported
It is low to turn staring torque, operation process does not get rid of fat.It is comprehensive to have good high temperature performance, rustless property etc. concurrently for polyureas base grease at the same time
Performance is closed, and is prepared easy, safe and non-toxic.
The purpose of the present invention is what is be achieved through the following technical solutions：
A kind of 1. allophanamide base grease, it is characterised in that：Chemical composition and the percetage by weight ratio of the lubricating grease is：Thickening
Agent 12~17%, rust-inhibiting additive 4~8%, diphenylamines 0.1~0.3%, oil based on surplus；
Thickening agent is two urea groups, and the chemical general formula of two urea groups is：
Wherein n=1, is prepared, wherein long-chain fat amine by the aliphatic organic amine and MDI reactions of two class different chain lengths
For octadecylamine, short-chain fat amine is eight amine or decyl amine, the molar ratio of long-chain organic amine and short chain organic amine wherein in thickening agent
For 1.5~3:1, organic amine and MDI ratios are 1.1~1.2：1.Wherein rust-inhibiting additive is dinonyl naphthalene sulfonate barium, laurylene
One or more in 17 alkenyl imidazoline alkenyl succinic acid of base succinic acid, benzotriazole or 2- aminoethyls mix；
Base oil is Synthin oil, is typically polyalphaolefin oils, 40 ± 0.5 DEG C of kinematic viscosity range is in 20~30mm2/s.
2. the preparation method for polyureas base grease described in the claims 1, it is characterised in that：The step of this method
It is：
(1) base oil, 4,4 dimethyl benzene group diisocyanates and organic monoamine are weighed by the percentage by weight of lubricating grease, had
Machine amine can be the compound or the compound of octadecylamine and eight amine of octadecylamine and decyl amine；
(2) base oil being divided into two parts, portion is added in 4,4 dimethyl benzene group diisocyanates, is heated to 55~65 DEG C,
Stir evenly, obtain isocyanates oil solution；Another is added by octadecylamine, decyl amine is compound or octadecylamine, eight amine are combined
Organic amine in, be heated to 60~80 DEG C, stir evenly, obtain organic amine oil solution；
(3) by isocyanates oil solution and organic amine oil solution hybrid reaction, and reaction temperature is maintained at 90~120 DEG C
Between, the reaction time is 1.5~3h, and the reaction time after 1h more than adding diphenylamines；
(4) after reaction, by reaction product in 100~180 DEG C of condition 1~3h of constant temperature, cooled to room temperature, then
Rust-inhibiting additive is added, mixes, be ground to uniformly, obtain polyureas base grease.
In research work, final lubricating grease group has been obtained by deep theoretical research and substantial amounts of experimental exploring
Into and preparation process condition.Since application conditions propose relatively narrow cone penetration area requirement for lubricating grease, need to examine
Examining influences the correlative factor of lubricating grease cone penetration, main to include the forming of organic amine in raw material, different organic amine proportionings, thickening agent
Dosage, reaction temperature and reaction time.Research shows that the reaction time influences almost ignore for lubricating grease final performance
Disregard.Influence of the organic amine mixture composition to lubricating grease cone penetration has been investigated, has been answered using single octadecylamine, octadecylamine and ten amine
Close and octadecylamine is reacted under the same conditions with the compound three classes organic amine mixture of eight amine with diisocyanate, study
It was found that with dissymmetrical structure two urea structures, it is stronger for the thickening ability of base oil, can be thickened agent content it is less when from
To the effect of thickening base oil, and symmetrical structure thickening agent, thickening ability are poor, existing less than 25% appearance point oil in thickening agent content
As.And then lubricating grease is prepared with di-isocyanate reaction, the results showed that using octadecylamine and eight amine are compound in organic amine mixture
The content of middle increase octadecylamine, can improve thickening ability, while improve cone penetration, reduce denseness, increase thickening agent segment
Flexibility, is conducive to adjusting cone penetration and reaches required scope.In the timing of raw material proportioning one, reduce thickening agent dosage can improve bore into
Degree, reduces denseness, but this effect is limited, and thickening agent dosage reduces to be influenced to diminish for cone penetration to a certain extent,
In addition continuing, which reduces thickening agent dosage, can produce a point oily phenomenon.In raw material proportioning, when thickening agent dosage determines, temperature is for system
Denseness influence it is extremely limited, when reaction temperature is relatively low, there is considerable influence so that grease consistency improve it is more, reacting
When temperature is higher, the influence to denseness can almost be ignored.Continued submarine polyureas base grease preparation process and
Additive additive amount.
The advantages of technical solution of the present invention is：
The polyureas base grease that technical solution of the present invention provides, the present invention are exactly to be directed to above-mentioned prior art situation and needs
And design and provide a kind of allophanamide base grease and preparation method thereof, lubricating grease is disclosure satisfy that relatively narrow consistency range requirement,
Micro- cone penetration work in the range of 64~72 so that bearing operation staring torque is low, and operation process does not get rid of fat.Polyureas Ji Run at the same time
Consistent lubricant has the comprehensive performances such as good high temperature performance, mechanical stability, rustless property concurrently, and prepares easy, safe and non-toxic.
Embodiment
Technical solution of the present invention is further described below with reference to embodiment：
Table 1 is the chemical composition and percentage by weight of polyureas base grease of the present invention
1 embodiment of table forms (mass percent)
The step of method for preparing the polyureas base grease is：
(1) base oil, 4,4 dimethyl benzene group diisocyanates and organic monoamine are weighed by the percentage by weight of lubricating grease, had
Machine amine can be the compound or the compound of octadecylamine and eight amine of octadecylamine and decyl amine；
(2) base oil is divided into two parts, portion adds 4,4 dimethyl benzene group diisocyanates, is heated to 55~65 DEG C, stirs
Mix uniformly, obtain isocyanates oil solution；
The organic amine that another is added by octadecylamine, decyl amine is compound or octadecylamine, eight amine are combined, is heated to 60~80
DEG C, stir evenly, obtain organic amine oil solution；
(3) by isocyanates oil solution and organic amine oil solution hybrid reaction, and reaction temperature is maintained at 90~120 DEG C
Between, the reaction time is 1.5~3h, and the reaction time after 1h more than adding diphenylamines；
(4) after reaction, by reaction product in 100~180 DEG C of condition 1~3h of constant temperature, cooled to room temperature, then
Rust-inhibiting additive is added, mixes, be ground to uniformly, obtain two urea-base greases.
Table 2 is the main performance of embodiment 6.
2 embodiment of table, 6 PERFORMANCE OF GREASES
Gained lubricating grease is homogeneous paste it can be seen from the PERFORMANCE OF GREASES prepared, into fat better performances；Its dropping point exists
210 DEG C, 100 DEG C of points of oil mass ＜ 1%, 120 DEG C of evaporation capacity ＜ 5%, high-temperature behavior is excellent, and can meet 120 DEG C of long-time services will
Ask；Its corrosion resistance, salt spray resistance are excellent to meet use demand.In addition, lubricating grease cryogenic property is excellent, -30 DEG C similar
Viscosity is 368PaS, and micro- cone penetration is 67, can meet the needs of low detent torque.
Claims (2)
- A kind of 1. allophanamide base grease, it is characterised in that：Chemical composition and the percetage by weight ratio of the lubricating grease is：Thickening agent 12 ~17%, rust-inhibiting additive 4~8%, diphenylamines 0.1~0.3%, oil based on surplus；Thickening agent is two urea groups, and the chemical general formula of two urea groups is：Wherein n=1, is prepared, wherein long-chain fat amine is ten by the aliphatic organic amine and MDI reactions of two class different chain lengths Eight amine, short-chain fat amine are eight amine or decyl amine, and the molar ratio of long-chain organic amine and short chain organic amine is 1.5 wherein in thickening agent ~3:1, organic amine and MDI ratios are 1.1~1.2：1.Wherein rust-inhibiting additive is dinonyl naphthalene sulfonate barium, laurylene base fourth two One or more in acid, 17 alkenyl imidazoline alkenyl succinic acid of benzotriazole or 2- aminoethyls mix；Base oil It is typically polyalphaolefin oils, 40 ± 0.5 DEG C of kinematic viscosity range is in 20~30mm2/s for Synthin oil.
- 2. the preparation method for polyureas base grease described in the claims 1, it is characterised in that：The step of this method is：(1) base oil, 4,4 dimethyl benzene group diisocyanates and organic monoamine, organic amine are weighed by the percentage by weight of lubricating grease Can be the compound or the compound of octadecylamine and eight amine of octadecylamine and decyl amine；(2) base oil is divided into two parts, portion is added in 4,4 dimethyl benzene group diisocyanates, is heated to 55~65 DEG C, stirring Uniformly, isocyanates oil solution is obtained；Another is added by octadecylamine, decyl amine is compound or what octadecylamine, eight amine were combined has In machine amine, 60~80 DEG C are heated to, is stirred evenly, obtain organic amine oil solution；(3) by isocyanates oil solution and organic amine oil solution hybrid reaction, and reaction temperature is maintained between 90~120 DEG C, Reaction time is 1.5~3h, and the reaction time after 1h more than adding diphenylamines；(4), after reaction, by reaction product in 100~180 DEG C of condition 1~3h of constant temperature, cooled to room temperature, then adds Rust-inhibiting additive, mixes, is ground to uniformly, obtain polyureas base grease.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711188878.2A CN107987924A (en) | 2017-11-23 | 2017-11-23 | A kind of poly bis urea-base grease and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201711188878.2A CN107987924A (en) | 2017-11-23 | 2017-11-23 | A kind of poly bis urea-base grease and preparation method thereof |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0280493A (en) * | 1988-09-16 | 1990-03-20 | Nippon Guriisu Kk | Urea grease composition for conical roller bearing |
| CN1539935A (en) * | 2003-04-24 | 2004-10-27 | 协同油脂株式会社 | Grease compsns. |
| CN1723268A (en) * | 2002-12-10 | 2006-01-18 | 国际壳牌研究有限公司 | Urea grease composition |
-
2017
- 2017-11-23 CN CN201711188878.2A patent/CN107987924A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0280493A (en) * | 1988-09-16 | 1990-03-20 | Nippon Guriisu Kk | Urea grease composition for conical roller bearing |
| CN1723268A (en) * | 2002-12-10 | 2006-01-18 | 国际壳牌研究有限公司 | Urea grease composition |
| CN1539935A (en) * | 2003-04-24 | 2004-10-27 | 协同油脂株式会社 | Grease compsns. |
Non-Patent Citations (1)
| Title |
|---|
| 刘磊: "聚脲润滑脂的研究进展", 《化工进展》 * |
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