CN109852454A - A kind of four polyurea grease of composite calcium-base and preparation method thereof - Google Patents
A kind of four polyurea grease of composite calcium-base and preparation method thereof Download PDFInfo
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- CN109852454A CN109852454A CN201910227265.8A CN201910227265A CN109852454A CN 109852454 A CN109852454 A CN 109852454A CN 201910227265 A CN201910227265 A CN 201910227265A CN 109852454 A CN109852454 A CN 109852454A
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- grease
- calcium
- diisocyanate
- organic
- tetrapolyurea
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- 239000004519 grease Substances 0.000 title claims abstract description 64
- 239000002131 composite material Substances 0.000 title claims abstract description 37
- 238000002360 preparation method Methods 0.000 title claims abstract description 17
- 229920002396 Polyurea Polymers 0.000 title abstract description 37
- 125000005442 diisocyanate group Chemical group 0.000 claims abstract description 18
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims abstract description 17
- 239000011575 calcium Substances 0.000 claims abstract description 17
- 229910052791 calcium Inorganic materials 0.000 claims abstract description 17
- 239000002199 base oil Substances 0.000 claims abstract description 16
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims abstract description 14
- 239000000920 calcium hydroxide Substances 0.000 claims abstract description 12
- 229910001861 calcium hydroxide Inorganic materials 0.000 claims abstract description 12
- 239000002994 raw material Substances 0.000 claims abstract description 12
- 239000002562 thickening agent Substances 0.000 claims abstract description 9
- 150000001412 amines Chemical class 0.000 claims abstract description 8
- 150000008065 acid anhydrides Chemical class 0.000 claims abstract description 6
- 238000006243 chemical reaction Methods 0.000 claims description 27
- 239000000203 mixture Substances 0.000 claims description 19
- 150000004985 diamines Chemical class 0.000 claims description 13
- ZZTCPWRAHWXWCH-UHFFFAOYSA-N diphenylmethanediamine Chemical compound C=1C=CC=CC=1C(N)(N)C1=CC=CC=C1 ZZTCPWRAHWXWCH-UHFFFAOYSA-N 0.000 claims description 10
- FALRKNHUBBKYCC-UHFFFAOYSA-N 2-(chloromethyl)pyridine-3-carbonitrile Chemical group ClCC1=NC=CC=C1C#N FALRKNHUBBKYCC-UHFFFAOYSA-N 0.000 claims description 9
- 239000000654 additive Substances 0.000 claims description 9
- 230000000996 additive effect Effects 0.000 claims description 9
- 229940014800 succinic anhydride Drugs 0.000 claims description 9
- REYJJPSVUYRZGE-UHFFFAOYSA-N Octadecylamine Chemical group CCCCCCCCCCCCCCCCCCN REYJJPSVUYRZGE-UHFFFAOYSA-N 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 238000010438 heat treatment Methods 0.000 claims description 7
- 239000002530 phenolic antioxidant Substances 0.000 claims description 7
- PAYRUJLWNCNPSJ-UHFFFAOYSA-N Aniline Chemical compound NC1=CC=CC=C1 PAYRUJLWNCNPSJ-UHFFFAOYSA-N 0.000 claims description 6
- PAFZNILMFXTMIY-UHFFFAOYSA-N cyclohexylamine Chemical compound NC1CCCCC1 PAFZNILMFXTMIY-UHFFFAOYSA-N 0.000 claims description 6
- 239000012153 distilled water Substances 0.000 claims description 6
- 238000003756 stirring Methods 0.000 claims description 6
- 239000002253 acid Substances 0.000 claims description 4
- PIICEJLVQHRZGT-UHFFFAOYSA-N Ethylenediamine Chemical compound NCCN PIICEJLVQHRZGT-UHFFFAOYSA-N 0.000 claims description 3
- 238000007872 degassing Methods 0.000 claims description 3
- NAQMVNRVTILPCV-UHFFFAOYSA-N hexane-1,6-diamine Chemical compound NCCCCCCN NAQMVNRVTILPCV-UHFFFAOYSA-N 0.000 claims description 3
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 3
- 239000002480 mineral oil Substances 0.000 claims description 3
- 235000010446 mineral oil Nutrition 0.000 claims description 3
- 238000007670 refining Methods 0.000 claims description 3
- GEYOCULIXLDCMW-UHFFFAOYSA-N 1,2-phenylenediamine Chemical compound NC1=CC=CC=C1N GEYOCULIXLDCMW-UHFFFAOYSA-N 0.000 claims description 2
- CBCKQZAAMUWICA-UHFFFAOYSA-N 1,4-phenylenediamine Chemical compound NC1=CC=C(N)C=C1 CBCKQZAAMUWICA-UHFFFAOYSA-N 0.000 claims description 2
- PNPCRKVUWYDDST-UHFFFAOYSA-N 3-chloroaniline Chemical compound NC1=CC=CC(Cl)=C1 PNPCRKVUWYDDST-UHFFFAOYSA-N 0.000 claims description 2
- 150000004982 aromatic amines Chemical class 0.000 claims description 2
- JRBPAEWTRLWTQC-UHFFFAOYSA-N dodecylamine Chemical compound CCCCCCCCCCCCN JRBPAEWTRLWTQC-UHFFFAOYSA-N 0.000 claims description 2
- 239000003921 oil Substances 0.000 claims description 2
- 235000019198 oils Nutrition 0.000 claims description 2
- 235000015112 vegetable and seed oil Nutrition 0.000 claims description 2
- 239000008158 vegetable oil Substances 0.000 claims description 2
- RZXMPPFPUUCRFN-UHFFFAOYSA-N p-toluidine Chemical compound CC1=CC=C(N)C=C1 RZXMPPFPUUCRFN-UHFFFAOYSA-N 0.000 claims 2
- UPMLOUAZCHDJJD-UHFFFAOYSA-N 4,4'-Diphenylmethane Diisocyanate Chemical compound C1=CC(N=C=O)=CC=C1CC1=CC=C(N=C=O)C=C1 UPMLOUAZCHDJJD-UHFFFAOYSA-N 0.000 claims 1
- AFBPFSWMIHJQDM-UHFFFAOYSA-N N-methyl-N-phenylamine Natural products CNC1=CC=CC=C1 AFBPFSWMIHJQDM-UHFFFAOYSA-N 0.000 claims 1
- PLZVEHJLHYMBBY-UHFFFAOYSA-N Tetradecylamine Chemical compound CCCCCCCCCCCCCCN PLZVEHJLHYMBBY-UHFFFAOYSA-N 0.000 claims 1
- DFCSFNUXZBPPTD-UHFFFAOYSA-N benzene-1,3-dicarbonyl isocyanate Chemical compound O=C=NC(=O)C1=CC=CC(C(=O)N=C=O)=C1 DFCSFNUXZBPPTD-UHFFFAOYSA-N 0.000 claims 1
- 235000010290 biphenyl Nutrition 0.000 claims 1
- 239000004305 biphenyl Substances 0.000 claims 1
- 239000000460 chlorine Substances 0.000 claims 1
- 229910052801 chlorine Inorganic materials 0.000 claims 1
- 238000001816 cooling Methods 0.000 claims 1
- 238000005260 corrosion Methods 0.000 claims 1
- ZBCBWPMODOFKDW-UHFFFAOYSA-N diethanolamine Chemical compound OCCNCCO ZBCBWPMODOFKDW-UHFFFAOYSA-N 0.000 claims 1
- 238000000227 grinding Methods 0.000 claims 1
- 239000003112 inhibitor Substances 0.000 claims 1
- 238000002156 mixing Methods 0.000 claims 1
- ZUOUZKKEUPVFJK-UHFFFAOYSA-N phenylbenzene Natural products C1=CC=CC=C1C1=CC=CC=C1 ZUOUZKKEUPVFJK-UHFFFAOYSA-N 0.000 claims 1
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 claims 1
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 claims 1
- DVKJHBMWWAPEIU-UHFFFAOYSA-N toluene 2,4-diisocyanate Chemical group CC1=CC=C(N=C=O)C=C1N=C=O DVKJHBMWWAPEIU-UHFFFAOYSA-N 0.000 claims 1
- 238000005303 weighing Methods 0.000 claims 1
- 239000007921 spray Substances 0.000 abstract 1
- 238000010792 warming Methods 0.000 description 8
- 239000013556 antirust agent Substances 0.000 description 6
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 239000000344 soap Substances 0.000 description 5
- 238000004090 dissolution Methods 0.000 description 4
- 230000001050 lubricating effect Effects 0.000 description 4
- -1 para-totuidine Chemical compound 0.000 description 4
- 239000000047 product Substances 0.000 description 4
- 230000007547 defect Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Natural products CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 150000002148 esters Chemical class 0.000 description 2
- 239000012948 isocyanate Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- FKTHNVSLHLHISI-UHFFFAOYSA-N 1,2-bis(isocyanatomethyl)benzene Chemical compound O=C=NCC1=CC=CC=C1CN=C=O FKTHNVSLHLHISI-UHFFFAOYSA-N 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 1
- 230000003026 anti-oxygenic effect Effects 0.000 description 1
- HIFVAOIJYDXIJG-UHFFFAOYSA-N benzylbenzene;isocyanic acid Chemical class N=C=O.N=C=O.C=1C=CC=CC=1CC1=CC=CC=C1 HIFVAOIJYDXIJG-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 239000004202 carbamide Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- CZZYITDELCSZES-UHFFFAOYSA-N diphenylmethane Chemical compound C=1C=CC=CC=1CC1=CC=CC=C1 CZZYITDELCSZES-UHFFFAOYSA-N 0.000 description 1
- 150000002513 isocyanates Chemical class 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 1
- GGHDAUPFEBTORZ-UHFFFAOYSA-N propane-1,1-diamine Chemical compound CCC(N)N GGHDAUPFEBTORZ-UHFFFAOYSA-N 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- AGGKEGLBGGJEBZ-UHFFFAOYSA-N tetramethylenedisulfotetramine Chemical compound C1N(S2(=O)=O)CN3S(=O)(=O)N1CN2C3 AGGKEGLBGGJEBZ-UHFFFAOYSA-N 0.000 description 1
- 125000003944 tolyl group Chemical group 0.000 description 1
Landscapes
- Lubricants (AREA)
Abstract
本发明公开了一种复合钙基四聚脲润滑脂及其制备方法，按照质量百分含量，其原料由以下组分组成：基础油70‑82％、稠化剂15‑30％、添加剂1‑4％；其中，所述稠化剂由二异氰酸酯、有机胺、酸酐、氢氧化钙组成。本发明所制备的复合钙基四聚脲润滑脂具有良好的润滑性、粘附性、耐高温性和优异的机械安定性、极压抗磨性和抗水淋性。本发明有效地改善了聚脲润滑脂的相关性能，扩大其应用范围，制备方法简单易于操作，具有很好的市场推广与应用潜力。The invention discloses a composite calcium-based tetrapolyurea grease and a preparation method thereof. According to the mass percentage, the raw materials are composed of the following components: 70-82% of base oil, 15-30% of thickener, and 1 ‑4%; wherein, the thickening agent is composed of diisocyanate, organic amine, acid anhydride, and calcium hydroxide. The complex calcium-based tetrapolyurea grease prepared by the invention has good lubricity, adhesion, high temperature resistance and excellent mechanical stability, extreme pressure and anti-wear properties and water-spray resistance. The invention effectively improves the relevant properties of the polyurea grease, expands its application range, has a simple preparation method and is easy to operate, and has good market promotion and application potential.
Description
Technical field
The invention belongs to lubriation material technical field, a kind of four polyurea grease of composite calcium-base and its preparation side are provided
Method.
Background technique
With the fast development of modern industry, the harsh working condition such as various high/low temperatures, high revolving speed is to industrial lubrication material
More stringent requirements are proposed for material, and in recent years, all kinds of lubricating grease have obtained quick development.Wherein, compositing lithio ester, composite sulfoacid
The high dropping point such as calcium grease, polyurea grease, long-life lubricating grease are studied extensively by scholars.
Metal soap base grease such as lithium base grease, Ba-grease, calcium-base grease etc. has lubricity good, inexpensive
The advantages of, it is widely applied in industrial circle, but in use, the metal ion in metal soap base grease is often
Catalysed oxidn can be generated to lubricating grease, so that the antioxygenic property of metal soap base grease is poor, so that working life contracts
It is short, machinery rouge high frequency of replacement.
Polyurea grease has many excellent performances, but its there is also the defects of itself, after working at high temperature for a long time, gather
Urea grease can generate hardening phenomenon, this needs to concentrate in the high-temperature mechanical equipment for rouge some, often make line clogging,
To influence mechanical normal use, which also limits the uses of polyurea grease
In order to improve existing metal soap base grease and polyurea grease existing shortcoming and defect in use, expand
The demand for the grease product that the use scope of big existing grease product develops higher performance is constantly increasing.
Summary of the invention
The object of the present invention is to provide a kind of four polyurea greases of composite calcium-base and preparation method thereof, to improve existing metal
Soap base grease and polyurea grease existing shortcoming and defect in use, expand existing grease product uses model
It encloses.
To achieve the above object, the technical solution adopted by the present invention are as follows:
A kind of four polyurea grease of composite calcium-base, according to mass percentage, raw material is composed of the following components:
Base oil 70-82%, thickening agent 15-30%, additive 1-4%；
Wherein, the thickening agent is made of diisocyanate, organic amine, binary acid, calcium hydroxide.
Preferably, each component of the thickening agent accounts for the percentage composition of four polyurea grease raw material of composite calcium-base are as follows:
Diisocyanate 6-10%, organic amine 4-7.1%, binary acid 1.5-3.5%, calcium hydroxide 5-7%.
The base oil is one of mineral oil, synthetic oil, vegetable oil or a variety of mixtures, preferably mineral oil.
The diisocyanate is toluene di-isocyanate(TDI), methyldiphenyl diisocyanate, diphenylmethane diisocyanates
One of ester, xylylene diisocyanate, 4,4- methyl diphenylene diisocyanate are a variety of, preferably diphenyl-methane two
Isocyanates.
The organic amine is the mixture of organic monoamine and organic diamine；The organic monoamine is octadecylamine, lauryl amine, ten
One of tetramine, para-totuidine, cyclohexylamine, parachloroanilinum, m-chloroaniline, aniline or a variety of mixtures, preferably octadecylamine,
Para-totuidine, cyclohexylamine；The organic diamine be p-phenylenediamine, o-phenylenediamine, the aromatic amine of 4,4- benzidine, ethylenediamine,
One of propane diamine, the straight-chain fatty amine of 1,6- hexamethylene diamine, diaminodiphenylmethane or a variety of mixtures, preferably diamino
Diphenyl-methane.
The acid anhydrides is succinic anhydride.
The additive is organic amine-phenolic antioxidant and anticorrosive antirust agent.
As optimal technical scheme, according to mass percentage, the raw material of four polyurea grease of composite calcium-base of the invention
It is composed of the following components: base oil 72-80%, diisocyanate 6.5-9.5%, organic monoamine 4-5.5%, organic diamine 1-
2%, succinic anhydride 1.5-2.5%, calcium hydroxide 5.5-7%, additive 1-3%.
A kind of preparation method of four polyurea grease of composite calcium-base, comprising the following steps:
(1) base oil and organic diamine are added to reaction kettle, are warming up to 80 DEG C of progress heating stirring dissolutions；
(2) diisocyanate is added in the mixture that step (1) obtains, and dissolved, is transferred in reaction kettle, 80
DEG C carry out isothermal reaction 60min；
(3) organic monoamine is added in the mixture that step (2) obtains, and dissolved, in a kettle, in 80 DEG C of temperature
Degree reaction 40min, is then warming up to 95 DEG C for reaction kettle and adds distilled water and react 40min under the conditions of this temperature；
(4) acid anhydrides is added in the mixture that solution is obtained to step (3), and dissolved, be then warming up to 120 in reaction kettle
DEG C, carry out isothermal reaction 60min；
(5) calcium hydroxide and distilled water are weighed and be added to after Hybrid Heating dissolution reaction kettle, while by additive
It is added in reaction kettle, the isothermal reaction 40min at 120 DEG C；
(6) reaction kettle is warming up to 205 DEG C of progress high temperature refining 15min, cools down, grind by stirring, degassing obtains institute
State four polyurea grease of composite calcium-base.
The preparation principle of four polyurea grease of composite calcium-base of the invention are as follows:
The utility model has the advantages that four polyurea grease of composite calcium-base and preparation method thereof of the invention, has double phenyl ring using one kind
The diaminodiphenylmethane of rock-steady structure is as the organic diamine in the preparation of four polyurea compounds and passes through a kind of method of simplicity
Carboxylic acid calcium salt is introduced into four polyureas molecules to prepare a kind of four polyurea grease of composite calcium-base.Prepared composite calcium-base
Four polyurea greases have good lubricity, adhesiveness, heat-resisting quantity and excellent mechanical stability, extreme pressure anti-wear and resist
Water washout characteristics.Four polyurea grease of composite calcium-base of the invention not only increases technical deficiency existing for existing lubricating grease and expansion
The application range of grease product.
Specific embodiment
The present invention is further elaborated below with reference to embodiment.
Embodiment 1
Four polyurea grease of composite calcium-base of the present embodiment, according to mass percentage, raw material is composed of the following components:
Base oil 76%, diisocyanate 8.7%, octadecylamine 4.7%, diaminodiphenylmethane 1%, succinic anhydride 2%, calcium hydroxide
6.6%, organic amine-phenolic antioxidant 0.5%, anticorrosive antirust agent 0.5%；
Above-mentioned four polyurea grease of composite calcium-base the preparation method is as follows:
(1) base oil and organic diamine are added to reaction kettle, are warming up to 80 DEG C of progress heating stirring dissolutions；
(2) diisocyanate is added in the mixture that step (1) obtains, and dissolved, is transferred in reaction kettle, 80
DEG C carry out isothermal reaction 60min；
(3) organic monoamine is added in the mixture that step (2) obtains, and dissolved, in a kettle, in 80 DEG C of temperature
Degree reaction 40min, is then warming up to 95 DEG C for reaction kettle and adds distilled water and react 40min under the conditions of this temperature；
(4) acid anhydrides is added in the mixture that solution is obtained to step (3), and dissolved, be then warming up to 120 in reaction kettle
DEG C, carry out isothermal reaction 60min；
(5) calcium hydroxide and distilled water are weighed and be added to after Hybrid Heating dissolution reaction kettle, while by additive
It is added in reaction kettle, the isothermal reaction 40min at 120 DEG C；
(6) reaction kettle is warming up to 205 DEG C of progress high temperature refining 15min, cools down, grind by stirring, degassing obtains institute
State four polyurea grease of composite calcium-base.
Embodiment 2
Four polyurea grease of composite calcium-base of the present embodiment, according to mass percentage, raw material is composed of the following components:
Base oil 78%, diisocyanate 8%, octadecylamine 4.2%, diaminodiphenylmethane 0.9%, succinic anhydride 1.9%, hydroxide
Calcium 6%, organic amine-phenolic antioxidant 0.5%, anticorrosive antirust agent 0.5%.
The preparation method is the same as that of Example 1.
Embodiment 3
Four polyurea grease of composite calcium-base of the present embodiment, according to mass percentage, raw material is composed of the following components:
Base oil 75%, diisocyanate 8.8%, octadecylamine 4.8%, diaminodiphenylmethane 1.1%, succinic anhydride 2.2%, hydrogen-oxygen
Change calcium 7%, organic amine-phenolic antioxidant 0.6%, anticorrosive antirust agent 0.5%.
The preparation method is the same as that of Example 1.
Embodiment 4
Four polyurea grease of composite calcium-base of the present embodiment, according to mass percentage, raw material is composed of the following components:
Base oil 72%, diisocyanate 9.5%, octadecylamine 5.5%, diaminodiphenylmethane 2%, succinic anhydride 2.5%, hydroxide
Calcium 5.5%, organic amine-phenolic antioxidant 1.5%, anticorrosive antirust agent 1.5%.
The preparation method is the same as that of Example 1.
Embodiment 5
Four polyurea grease of composite calcium-base of the present embodiment, according to mass percentage, raw material is composed of the following components:
Base oil 80%, diisocyanate 6.5%, octadecylamine 4%, diaminodiphenylmethane 1%, succinic anhydride 1.5%, calcium hydroxide
6%, organic amine-phenolic antioxidant 0.5%, anticorrosive antirust agent 0.5%.
The preparation method is the same as that of Example 1.
Comparative example
Using the mass ratio of base oil and thickening agent used when preparing four polyurea grease of composite calcium-base in embodiment 3
And used preparation method prepares four polyurea grease of composite calcium-base, by the organic diamine in the synthesis of four polyurea compounds
Diaminodiphenylmethane replaces with ethylenediamine to prepare four polyurea grease of composite calcium-base.
Prepared composite calcium in four polyurea grease of composite calcium-base prepared by the embodiment of the present invention 1-3 and comparative example
The performance test results of four polyurea grease of base are as shown in table 1 below:
Table 1
The four polyurea grease data of composite calcium-base as prepared by products obtained therefrom detection data of the present invention and common organic diamine
Comparison is it can be seen that a kind of four polyurea grease of composite calcium-base of the present invention has good lubricity, adhesiveness, resistance to height
Warm nature and excellent mechanical stability, extreme pressure anti-wear and anti-water drenching.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (10)
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111303977A (en) * | 2020-03-24 | 2020-06-19 | 青岛中科润美润滑材料技术有限公司 | Lubricating grease for continuous casting machine and preparation method thereof |
| CN115247094A (en) * | 2022-08-12 | 2022-10-28 | 福建优立盛油脂有限公司 | Polyurea-anhydrous calcium-based lubricating grease and preparation method thereof |
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| US3920571A (en) * | 1974-09-16 | 1975-11-18 | Chevron Res | Grease composition and method of preparing the same |
| US5158694A (en) * | 1989-03-31 | 1992-10-27 | Amoco Corporation | Railroad grease |
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Application publication date: 20190607 |