CN1493670A - Ureido lubricating grease and its preparation method - Google Patents
Ureido lubricating grease and its preparation method Download PDFInfo
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- CN1493670A CN1493670A CNA021463824A CN02146382A CN1493670A CN 1493670 A CN1493670 A CN 1493670A CN A021463824 A CNA021463824 A CN A021463824A CN 02146382 A CN02146382 A CN 02146382A CN 1493670 A CN1493670 A CN 1493670A
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Abstract
An carbamide-base lubricating grease contains hydrogenated mineral oil, plant oil and carbamide-base thickening agent. Its advantages are high thickening power and dripping point, and low vibration and noise of bearing.
Description
Technical field
The present invention relates to lubricating grease and preparation method thereof, specifically urea-base grease and preparation method thereof.
Technical background
Urea-base grease is a kind of high-performance lubricating grease, and it has dropping point height, characteristics that oxidation stability is good, is widely used in automobile and the Iron And Steel Industry, and the application in bearing is also more and more.Most Dormant oils commonly used or the synthetic oils of adopting of urea-base grease prepare, and the impurity that Dormant oils is introduced is more, causes bearing to produce abnormal vibrations when using, and makes the wearing and tearing increase, and bearing life shortens; And use the synthetic oil price expensive partially.Also have and use refining hydrogenation Dormant oils to prepare urea-base grease, to retrieve the patent of using refining hydrogenation Dormant oils to prepare urea-base grease at present have two pieces.One piece is JP 06108078, and its composition is the high-purity absolute oil that contains 20% (weight) in the base oil at least, has following character: (A) kinematic viscosity is at 100 ℃ of 2-20mm
2In/s the scope; (B) viscosity index is at least 120; (C) aromatic carbon content must not surpass 1% of total carbon; (D) the straight chain carbon content accounts for total carbon and is at least 85%.Another piece of writing is JP 02194095, and 40 ℃ of kinematic viscosity of base oil were 50-500mm during it was formed
2/ s, viscosity index is 80 at least, zero pour is at least to-30 ℃.
But the thickening ability through overtesting discovery, hydrogenated oil is relatively poor, under the identical situation of viscosifying agent consumption, is separately that the lubricating grease of base oil preparation is softer rarer with the hydrogenated oil, can not satisfy specification requirement, and splash easily in bearing operation.
Summary of the invention
The object of the present invention is to provide a kind of new urea-base grease to form, this urea-base grease can reduce bear vibration, and has certain biodegradability.
Another object of the present invention is to provide a kind of preparation method of above-mentioned urea-base grease.
The composition of urea-base grease provided by the invention comprises (is benchmark with the lubricating grease gross weight):
1) mineral hydrogenated oil 40-65%, preferred 45-60%;
2) vegetables oil 10-35%, preferred 15-30%;
3) carbamido thickening agent 10-40%, preferred 15-30%.
This grease base plinth oil is the mixing oil of refining mineral hydrogenated oil and vegetables oil, and refining mineral hydrogenated oil forms through Tuo La and hydrofining, and its range of viscosities is 100 ℃ of viscosity 5-15mm
2/ s, preferred 8-12mm
2/ s, aromaticity content preferably are no more than 1%; The range of viscosities of vegetables oil is that 100 ℃ of viscosity are 6-20mm
2/ s, preferred 8-15mm
2/ s.The preferred Viscotrol C of said vegetables oil, rape seed oil, soya-bean oil etc. can be vegetable oil, perhaps the mixing oil of more than one vegetables oil.
Said carbamido thickening agent is generated by organic amine and isocyanate reaction, and organic amine wherein is that carbon number is 8～18 aliphatic amide, as amino dodecane, stearylamine etc., also can be Cycloalkyl amine; Isocyanic ester is 4,4 '-diphenylmethanediisocyanate or 2, vulcabond such as 4-toluenediisocyanate.Organic amine and isocyanic ester are pressed chemical reaction dosage and are added.
The preparation method of urea-base grease provided by the invention comprises: at 50-100 ℃, organic amine is mixed in the hydrogenation Dormant oils with isocyanic ester and react, continue to be heated to 180-220 ℃, add vegetables oil, cooling, grind.
Specifically, urea-base grease provided by the invention can prepare by the following method: organic amine and isocyanic ester are melted in respectively in the hydrogenation Dormant oils, at 50-100 ℃, preferred 60-80 ℃ is mixed and reaction, continue to be heated to 180-220 ℃, preferred 200-210 ℃, add vegetables oil as quenching oil, be cooled to room temperature and grinding.Can in basic fat, add conventional additives as required, as oxidation inhibitor, rust-preventive agent etc.
Urea-base grease provided by the invention adopts the mixing oil of hydrogenated oil and vegetables oil as base oil, not only overcome the defective of hydrogenated oil thickening ability difference, and prepared lubricating grease has the dropping point height, the characteristics that bearing vibration value is little, noise is low, be suitable for using on bearing, this lubricating grease also has certain biodegradability in addition.
Embodiment
The reactant composition of embodiment and Comparative Examples sees Table 1
Table 1 reactant is formed
| Vegetables oil | Hydrogenated oil: vegetables oil | Amine | Isocyanic ester | |
| Embodiment 1 | Viscotrol C | ????3∶1 | Amino dodecane | ????TDI |
| Embodiment 2 | Rapeseed oil | ????2∶1 | Stearylamine | ????MDI |
| Embodiment 3 | Viscotrol C+rapeseed oil | ????3∶1 | Amino dodecane | ????MDI |
| Comparative Examples 1 | Mineral oil | Amino dodecane | ????MDI | |
| Comparative Examples 2 | Mineral oil | Stearylamine | ????MDI | |
| Comparative Examples 3 | Hydrogenated oil | Stearylamine | ????MDI |
Embodiment 1
Preparation 100g lubricating grease, multiviscosisty dosage 30%.Take by weighing 52.5g hydrogenated oil (viscosity 10mm
2/ s) and be divided into two parts, amino dodecane and TDI are put into the hydrogenated oil heating and melting respectively, treat that temperature reaches 80 ℃ of hybrid reactions and stirs, continue heating up to 210 ℃, add 17.5g Viscotrol C (viscosity 8mm
2/ s), be cooled to grinding at room temperature twice.Prepared lubricating grease numbering LBG-1.Analytical results sees Table 2.
Embodiment 2
Preparation 100g lubricating grease, multiviscosisty dosage 20%.Take by weighing 54g hydrogenated oil (viscosity 12mm
2/ s) and be divided into two parts, stearylamine and MDI are put into the hydrogenated oil heating and melting respectively, treat that temperature reaches 70 ℃ of hybrid reactions and stirs, continue heating up to 210 ℃, add 26g rapeseed oil (viscosity 10mm
2/ s), be cooled to grinding at room temperature twice.Prepared lubricating grease numbering LBG-2.Analytical results sees Table 2.
Embodiment 3
Preparation 100g lubricating grease, multiviscosisty dosage 20%.Take by weighing 60g hydrogenated oil (viscosity 10mm
2/ s) and be divided into two parts, stearylamine and MDI are put into the hydrogenated oil heating and melting respectively, treat that temperature reaches 80 ℃ of hybrid reactions and stirs, continue heating up to 210 ℃, add 10g rapeseed oil and 10g Viscotrol C, be cooled to grinding at room temperature twice.Prepared lubricating grease numbering LBG-3.Analytical results sees Table 2.
Comparative Examples 1
Preparation 100g lubricating grease, multiviscosisty dosage 20%.With the Dormant oils is base oil, makees viscosifying agent with amino dodecane and MDI reaction product.Take by weighing the 80g Dormant oils and be divided into two parts, amino dodecane and MDI are put into the Dormant oils heating and melting respectively, treat that temperature reaches 80 ℃ of hybrid reactions and stirs, continue heating, be cooled to room temperature and grind twice up to 180 ℃.Prepared lubricating grease numbering LDG-1.Analytical results sees Table 2.
Comparative Examples 2
Preparation 100g lubricating grease, multiviscosisty dosage 20%.With the Dormant oils is base oil, makees viscosifying agent with stearylamine and MDI reaction product.Take by weighing the 80g Dormant oils and be divided into two parts, stearylamine and MDI are put into the Dormant oils heating and melting respectively, treat that temperature reaches 80 ℃ of hybrid reactions and stirs, continue heating, be cooled to room temperature and grind twice up to 180 ℃.Prepared lubricating grease numbering LDG-2.Analytical results sees Table 2.
Comparative Examples 3
Preparation 100g lubricating grease, multiviscosisty dosage 20%.With the hydrogenated oil is base oil, makees viscosifying agent with stearylamine and MDI reaction product.Take by weighing the 80g hydrogenated oil and be divided into two parts, stearylamine and MDI are put into the hydrogenated oil heating and melting respectively, treat that temperature reaches 80 ℃ of hybrid reactions and stirs, continue heating, be cooled to room temperature and grind twice up to 180 ℃.Prepared lubricating grease numbering LDG-3.Analytical results sees Table 2.
Table 2 analytical results
| Sample number into spectrum | Cone penetration (1/4), 0.1mm | Dropping point, ℃ | Bearing vibration value | |||
| Low frequency | Intermediate frequency | High frequency | ||||
| Embodiment 1 | ??LBG-1 | ????65 | ??300 | ????21 | ????22 | ????13 |
| Embodiment 2 | ??LBG-2 | ????53 | ??＞280 | ????24 | ????20 | ????14 |
| Embodiment 3 | ??LBG-3 | ????74 | ??＞280 | ????23 | ????20 | ????14 |
| Comparative Examples 1 | ??LDG-1 | ????60 | ??＞280 | ????27 | ????20 | ????15 |
| Comparative Examples 2 | ??LDG-2 | ????55 | ??260 | ????30 | ????21 | ????16 |
| Comparative Examples 3 | ??LDG-3 | ????80 | ??250 | ????32 | ????20 | ????16 |
Claims (8)
1. a urea-base grease comprises following component: 1) mineral hydrogenated oil 40-65%; 2) vegetables oil 10-35%; 3) carbamido thickening agent 10-40%.
2. according to the described urea-base grease of claim 1, it is characterized in that, comprising: 1) mineral hydrogenated oil 45-60%; 2) vegetables oil 15-30%; 3) carbamido thickening agent 15-30%.
3. according to the described urea-base grease of claim 1, it is characterized in that the range of viscosities of mineral hydrogenated oil is 100 ℃ of viscosity 5-15mm
2/ s, the range of viscosities of vegetables oil are that 100 ℃ of viscosity are 6-20mm
2/ s.
4. according to the described urea-base grease of claim 1, it is characterized in that the range of viscosities of mineral hydrogenated oil is 100 ℃ of viscosity 8-12mm
2/ s, the range of viscosities of vegetables oil are 100 ℃ of viscosity 8-15mm
2/ s.
5. according to the described urea-base grease of claim 1, it is characterized in that said vegetables oil is selected from a kind of in Viscotrol C, rape seed oil and the soya-bean oil or more than one mixing oil.
6. according to the described urea-base grease of claim 1, it is characterized in that, said carbamido thickening agent is generated by organic amine and isocyanate reaction, organic amine wherein is that carbon number is 8～18 aliphatic amide, isocyanic ester is 4,4 '-diphenylmethanediisocyanate or 2, vulcabond such as 4-toluenediisocyanate.
7. the preparation method of the described urea-base grease of claim 1 comprises: at 50-100 ℃, organic amine is mixed in the hydrogenation Dormant oils with isocyanic ester and react, continue to be heated to 180-220 ℃, add vegetables oil, cooling, grind.
8. according to the preparation method of the described urea-base grease of claim 7, it is characterized in that, aliphatic amide and isocyanic ester are melted in respectively in the hydrogenation Dormant oils, mix and reaction at 60-80 ℃, continue to be heated to 200-210 ℃, add vegetables oil, be cooled to room temperature and grinding as quenching oil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02146382 CN1239685C (en) | 2002-10-30 | 2002-10-30 | Ureido lubricating grease and its preparation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02146382 CN1239685C (en) | 2002-10-30 | 2002-10-30 | Ureido lubricating grease and its preparation method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1493670A true CN1493670A (en) | 2004-05-05 |
| CN1239685C CN1239685C (en) | 2006-02-01 |
Family
ID=34232709
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02146382 Expired - Lifetime CN1239685C (en) | 2002-10-30 | 2002-10-30 | Ureido lubricating grease and its preparation method |
Country Status (1)
| Country | Link |
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| CN (1) | CN1239685C (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102417844A (en) * | 2011-10-18 | 2012-04-18 | 中国石油化工股份有限公司 | Lubricating grease composition for seat slide rails of automobile |
| CN102417843A (en) * | 2010-09-27 | 2012-04-18 | 中国石油化工股份有限公司 | Hexaurea lubricating grease and preparation method thereof |
| CN102417854A (en) * | 2010-09-27 | 2012-04-18 | 中国石油化工股份有限公司 | 8-uril grease lubricant and its preparation method |
| CN101629121B (en) * | 2009-08-12 | 2012-08-29 | 中国石油化工股份有限公司 | Novel lubricating grease and preparation method thereof |
| CN101649243B (en) * | 2009-09-15 | 2012-12-12 | 安庆市中天石油化工有限公司 | High and low temperature lubricating grease and preparation method thereof |
| CN103052702A (en) * | 2010-07-30 | 2013-04-17 | 雪佛龙美国公司 | Method of preparing greases |
-
2002
- 2002-10-30 CN CN 02146382 patent/CN1239685C/en not_active Expired - Lifetime
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101629121B (en) * | 2009-08-12 | 2012-08-29 | 中国石油化工股份有限公司 | Novel lubricating grease and preparation method thereof |
| CN101649243B (en) * | 2009-09-15 | 2012-12-12 | 安庆市中天石油化工有限公司 | High and low temperature lubricating grease and preparation method thereof |
| CN103052702A (en) * | 2010-07-30 | 2013-04-17 | 雪佛龙美国公司 | Method of preparing greases |
| CN103052702B (en) * | 2010-07-30 | 2015-09-23 | 雪佛龙美国公司 | Prepare the method for lubricating grease |
| US9347012B2 (en) | 2010-07-30 | 2016-05-24 | Chevron U.S.A. Inc. | Method of preparing greases |
| CN102417843A (en) * | 2010-09-27 | 2012-04-18 | 中国石油化工股份有限公司 | Hexaurea lubricating grease and preparation method thereof |
| CN102417854A (en) * | 2010-09-27 | 2012-04-18 | 中国石油化工股份有限公司 | 8-uril grease lubricant and its preparation method |
| CN102417854B (en) * | 2010-09-27 | 2013-12-25 | 中国石油化工股份有限公司 | 8-uril grease lubricant and its preparation method |
| CN102417843B (en) * | 2010-09-27 | 2014-03-26 | 中国石油化工股份有限公司 | Hexaurea lubricating grease and preparation method thereof |
| CN102417844A (en) * | 2011-10-18 | 2012-04-18 | 中国石油化工股份有限公司 | Lubricating grease composition for seat slide rails of automobile |
| CN102417844B (en) * | 2011-10-18 | 2014-08-20 | 中国石油化工股份有限公司 | Lubricating grease composition for seat slide rails of automobile |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1239685C (en) | 2006-02-01 |
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