CN114106907A - Composite lithium-based grease type damping high-temperature bearing lubricant - Google Patents

Composite lithium-based grease type damping high-temperature bearing lubricant Download PDF

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CN114106907A
CN114106907A CN202111519709.9A CN202111519709A CN114106907A CN 114106907 A CN114106907 A CN 114106907A CN 202111519709 A CN202111519709 A CN 202111519709A CN 114106907 A CN114106907 A CN 114106907A
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parts
lubricant
base oil
agent
types
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龚航
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Nobein Chemical Co ltd
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Nobein Chemical Co ltd
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    • 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
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    • 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
    • C10M2205/026—Butene
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    • C10M2205/00—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions
    • C10M2205/04—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing aromatic monomers, e.g. styrene
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    • 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
    • C10M2207/1236—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 used as thickening agent
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    • C10M2207/10—Carboxylix acids; Neutral salts thereof
    • C10M2207/12—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms
    • C10M2207/125—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of eight up to twenty-nine carbon atoms, i.e. fatty acids
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    • C10M2207/1265—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of eight up to twenty-nine carbon atoms, i.e. fatty acids monocarboxylic used as thickening agent
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    • C10M2207/10—Carboxylix acids; Neutral salts thereof
    • C10M2207/12—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms
    • C10M2207/125—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of eight up to twenty-nine carbon atoms, i.e. fatty acids
    • C10M2207/127—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of eight up to twenty-nine carbon atoms, i.e. fatty acids polycarboxylic
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    • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/28—Esters
    • C10M2207/281—Esters of (cyclo)aliphatic monocarboxylic acids
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    • C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
    • C10M2209/02—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • C10M2209/023—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds used as base material
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    • C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
    • C10M2209/02—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • C10M2209/08—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds containing monomers having an unsaturated radical bound to a carboxyl radical, e.g. acrylate type
    • C10M2209/084—Acrylate; Methacrylate
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    • 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
    • C10M2215/066—Arylene diamines
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    • C10M2219/00—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
    • C10M2219/02—Sulfur-containing compounds obtained by sulfurisation with sulfur or sulfur-containing compounds
    • C10M2219/022—Sulfur-containing compounds obtained by sulfurisation with sulfur or sulfur-containing compounds of hydrocarbons, e.g. olefines
    • C—CHEMISTRY; METALLURGY
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    • C10M2219/00—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
    • C10M2219/02—Sulfur-containing compounds obtained by sulfurisation with sulfur or sulfur-containing compounds
    • C10M2219/024—Sulfur-containing compounds obtained by sulfurisation with sulfur or sulfur-containing compounds of esters, e.g. fats
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    • 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
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    • C10M2219/00—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
    • C10M2219/08—Thiols; Sulfides; Polysulfides; Mercaptals
    • C10M2219/082—Thiols; Sulfides; Polysulfides; Mercaptals containing sulfur atoms bound to acyclic or cycloaliphatic carbon atoms
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    • C10M2223/00—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions
    • C10M2223/02—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions having no phosphorus-to-carbon bonds
    • C10M2223/04—Phosphate esters
    • C10M2223/045—Metal containing thio derivatives
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    • C10M2223/00—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions
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    • C10M2223/049—Phosphite
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Abstract

The invention relates to a composite lithium-based grease type damping high-temperature bearing lubricant, which is characterized in that the proportions of raw materials in the lubricant are optimized, so that the performances of a finished product in dropping point, extreme pressure resistance, metal adhesion and the like are remarkably improved, good high-temperature resistance and good mechanical stability are shown, and the composite lithium-based grease type damping high-temperature bearing lubricant is particularly suitable for high-temperature heavy-load working condition environments.

Description

Composite lithium-based grease type damping high-temperature bearing lubricant
Technical Field
The invention relates to a bearing lubricant, in particular to a composite lithium-based grease type damping high-temperature bearing lubricant.
Background
In the production activities of industrial and mining enterprises in ferrous metallurgy, petroleum refining and the like, bearings of equipment of the industrial and mining enterprises generally need to use a damping and high-temperature-resistant lubricant, and currently, a universal lithium-based grease and an extreme pressure composite lithium-based grease type lubricant are frequently used. Compared with the traditional lithium base grease, the dropping point of the composite lithium base grease is higher (>260 ℃), and the composite lithium base grease can be used under the high-temperature condition which cannot be applied by the traditional lithium base grease. Meanwhile, the composite lithium soap thickener can thicken most of mineral oil and synthetic oil, has good sensitivity to additives, and the prepared composite lithium base grease is more stable in grease forming structure, so that various lubricating requirements can be met according to different working conditions. Therefore, since the development of the last 60 th century, people are receiving more and more attention and attention. In the 70 s, the U.S. rapidly develops in the research and application patents of the composite lithium base grease, is mainly used as automobile general grease, aviation multi-effect grease, industrial bearing wear-resistant grease and the like for working conditions such as high-temperature lubrication, high rotating speed, high speed and heavy load and the like, and develops the composite lithium base grease with special performance such as noise reduction and the like. In contrast, the lithium complex grease in China only accounts for a very small amount of the total amount of the grease, so that the lithium complex grease in China has huge development space and potential. Meanwhile, compared with the imported products, the performance of the domestic composite lithium-based grease needs to be improved.
The current dropping point of the composite lithium-based grease lubricant is about 260 ℃, and the problems of lubricant loss, coking, failure and the like are easy to occur under severe working conditions of high temperature, heavy load, water steam, dust and the like, so that the wear, sintering and fracture of parts and components such as bearings and the like are caused, and the stability and safety of production are greatly damaged.
Disclosure of Invention
The invention aims to provide a composite lithium-based grease type damping high-temperature bearing lubricant with a high dropping point.
The purpose of the invention is realized by the following technical scheme: a composite lithium-based grease type damping high-temperature bearing lubricant comprises the following raw materials by weight,
20-60 parts of base oil;
10-15 parts of a composite lithium thickening agent;
3-5 parts of an antioxidant;
3-5 parts of an extreme pressure agent;
3-5 parts of an oiliness agent;
3-5 parts of an antiwear agent;
10-15 parts of an adhesive;
1-3 parts of an anticoagulant;
1-5 parts of an antirust agent.
Further, the base oil is a blend of three types of base oil and four types of base oil, and the weight ratio of the three types of base oil to the four types of base oil is 1:1-1: 3.
In the invention, the three types of base oil and the four types of base oil can be realized by selecting any commercial product. If any hydrogenated refined oil can be selected as the three types of base oil of the invention, and the poly-alpha-olefin is selected as the four types of base oil of the invention. The two base oils are mixed, so that the viscosity index can be improved, and the viscosity change of the whole system is small when the oil temperature is increased. The antioxidant can be one or more of zinc dialkyl dithiophosphate, a phenol antioxidant, an amine antioxidant (N, N' -di-sec-butyl-p-phenylenediamine, p-diisooctyl diphenylamine), a benzotriazole derivative deactivator and a thiadiazole derivative deactivator). The oiliness agent can be one or more of sulfurized cottonseed oil, phosphonate, dialkyl molybdenum dithiophosphate, stearyl alcohol laurate and oleic acid isomeric stearate. The antiwear agent can be realized by any one of sulfurized isobutylene, di-n-butyl phosphite and borate additive. The anticoagulant can be realized by any one of alkyl naphthalene type, polymethacrylate type and poly alpha-olefin. The antirust agent can be realized by any one of sulfonate type (barium dinonylnaphthalene sulfonate and barium heavy alkyl benzene sulfonate), carboxylic acid type (alkenyl succinic acid and derivatives thereof), organic amine and imidazoline type.
Further, the extreme pressure agent is one or more of chlorinated paraffin, sulfurized olefin, phosphate and phosphorus-nitrogen compound.
The English name of the extreme pressure additive (called extreme pressure agent for short) is: the extreme pressure agent is an additive which can form a high melting point chemical reaction film with the metal surface under the condition of high temperature and high pressure boundary lubrication, and can play a lubricating role under the condition of failure of an oiliness agent.
Further, the adhesive is one or more of polymethacrylate, polyisobutylene and hydrogenated styrene isoprene copolymer.
Further, the oiliness agent is one or more of sulfurized cottonseed oil, phosphonate, molybdenum dialkyl dithiophosphate, stearyl alcohol laurate and oleic acid isostearate.
Further, 0.2-0.8 part by weight of viscosity modifier is also included; the viscosity modifier is a blend of 4' -bromomethyl-2-methyl formate, 3-tert-butyldimethylsiloxy glutaric anhydride and polyisobutylene with the weight ratio of 1:2.6: 1.5.
Through long-term screening and experiments of the inventor, a proper amount of 4' -bromomethyl-2-methyl formate, 3-tert-butyldimethylsilyloxy glutaric anhydride and polyisobutylene are added into a reaction system of the composite lithium-based grease lubricant as raw materials, so that the dropping point can be effectively increased by 20-40 ℃, and the extreme pressure resistance of the product can be obviously improved.
Preferably, the extreme pressure agent is C3H7-S3-C3H7。
Preferably, the raw materials of the composite lithium thickening agent comprise C15-C20 monocarboxylic acid, lithium hydroxide and C5-C10 dicarboxylic acid; the molar ratio of the monocarboxylic acid, the lithium hydroxide and the dicarboxylic acid is 1: 1.1: 0.3.
the monocarboxylic acid and the dicarboxylic acid can be realized by selecting any carboxylic acid with a carbon chain length meeting the requirement. When preparing the composite lithium thickening agent, firstly, 40 wt% lithium hydroxide solution is dripped into monocarboxylic acid at 40-50 ℃, when the lithium hydroxide solution is consumed by 50%, dicarboxylic acid is added, the rest lithium hydroxide solution is dripped after mixing, and a powdery substance, namely the composite lithium thickening agent is obtained after drying.
According to the invention, the ratio of the raw materials in the lubricant is optimized, so that the performances of the finished product such as dropping point, extreme pressure resistance and metal adhesion are remarkably improved, and the lubricant shows good high-temperature resistance and mechanical stability, and is especially suitable for high-temperature working condition environments.
Detailed Description
The present invention will be described in further detail with reference to specific examples.
Example 1
This example provides a lithium-complex grease-based damping high-temperature bearing lubricant, which comprises the following raw materials by weight,
41 parts of base oil;
13 parts of a composite lithium thickener;
3.2 parts of zinc dialkyl dithiophosphate;
3.5 parts of extreme pressure agent;
4.6 parts of sulfurized cottonseed oil;
3.4 parts of sulfurized isobutylene;
11 parts of adhesive;
2.6 parts of poly alpha-olefin;
2.5 parts of barium dinonyl naphthalene sulfonate.
Further, the base oil is a blend of three types of base oil and four types of base oil, and the weight ratio of the three types of base oil to the four types of base oil is 1:2.
Further, the adhesive is a mixture of polyisobutylene and hydrogenated styrene isoprene copolymer, and the weight ratio of the polyisobutylene to the hydrogenated styrene isoprene copolymer is 1: 1.2.
further, 0.3 part by weight of viscosity modifier is also included; the viscosity modifier is a blend of 4' -bromomethyl-2-methyl formate, 3-tert-butyldimethylsiloxy glutaric anhydride and polyisobutylene with the weight ratio of 1:2.6: 1.5.
Preferably, the extreme pressure agent is C3H7-S3-C3H 7.
Preferably, the raw materials of the composite lithium thickener comprise stearic acid, lithium hydroxide and adipic acid; the molar ratio of octadecadienoic acid to lithium hydroxide to adipic acid is 1: 1.1: 0.3.
in this embodiment, when preparing the composite lithium thickening agent, a 40 wt% lithium hydroxide solution should be added dropwise to a monocarboxylic acid at 40 ℃ to 50 ℃, when the lithium hydroxide solution is consumed by 50%, a dicarboxylic acid is added, and after mixing, the remaining lithium hydroxide solution is added dropwise, and after drying, a powdery substance, that is, the composite lithium thickening agent of the present invention is obtained.
The data of the finished product of the lithium complex grease type damping high-temperature bearing lubricant of the embodiment are shown in the following table:
Figure BDA0003407138690000061
Figure BDA0003407138690000071
example 2
A composite lithium-based grease type damping high-temperature bearing lubricant comprises the following raw materials by weight,
50 parts of base oil;
14 parts of a composite lithium thickener;
3 parts of N, N' -di-sec-butyl-p-phenylenediamine;
3.2 parts of extreme pressure agent;
3 parts of an oiliness agent;
3 parts of di-n-butyl phosphite;
12 parts of an adhesive;
1 part of polymethacrylate type anticoagulant;
1 part of barium dinonyl naphthalene sulfonate.
Further, the base oil is a blend of three types of base oil and four types of base oil, and the weight ratio of the three types of base oil to the four types of base oil is 1: 2.2.
Further, the adhesive is hydrogenated styrene isoprene copolymer.
Further, the oiliness agent is isomeric stearic acid oleic acid.
Preferably, the extreme pressure agent is C3H7-S3-C3H7。
The raw materials also comprise 0.28 part of viscosity modifier by weight; the viscosity modifier is a blend of 4' -bromomethyl-2-methyl formate, 3-tert-butyldimethylsiloxy glutaric anhydride and polyisobutylene with the weight ratio of 1:2.6: 1.5.
Preferably, the raw materials of the composite lithium thickening agent comprise heptadecanoic acid, lithium hydroxide and pimelic acid; the molar ratio of the heptadecanoic acid to the lithium hydroxide to the pimelic acid is 1: 1.1: 0.3.
the data of the finished product of the lithium complex grease type damping high-temperature bearing lubricant of the embodiment are shown in the following table:
Figure BDA0003407138690000081
Figure BDA0003407138690000091
example 3
This example provides a lithium-complex grease-based damping high-temperature bearing lubricant, which comprises the following raw materials by weight,
55 parts of base oil;
14 parts of a composite lithium thickener;
4.7 parts of zinc dialkyl dithiophosphate;
4.1 parts of extreme pressure agent;
3.1 parts of phosphonate;
4.6 parts of di-n-butyl phosphite;
11 parts of adhesive;
1.5 parts of poly alpha-olefin;
1.5 parts of antirust agent.
Further, the base oil is a blend of three types of base oil and four types of base oil, and the weight ratio of the three types of base oil to the four types of base oil is 1: 2.2.
Further, the extreme pressure agent is a mixture of chlorinated paraffin and phosphate ester according to the mass ratio of 3: 1.
Further, the adhesive is a blend of polymethacrylate and polyisobutylene in a ratio of 1: 0.1.
Preferably, the raw materials also comprise 0.2 to 0.8 part by weight of viscosity modifier; the viscosity modifier is a blend of 4' -bromomethyl-2-methyl formate, 3-tert-butyldimethylsiloxy glutaric anhydride and polyisobutylene with the weight ratio of 1:2.6: 1.5.
Preferably, the raw materials of the composite lithium thickener comprise 19-alkanoic acid, lithium hydroxide and pimelic acid; the molar ratio of the 19-alkanoic acid to the lithium hydroxide to the pimelic acid is 1: 1.1: 0.3.
the data of the finished product of the lithium complex grease type damping high-temperature bearing lubricant of the embodiment are shown in the following table:
Figure BDA0003407138690000101
example 4
This example provides a lithium-complex grease-based damping high-temperature bearing lubricant, which comprises the following raw materials by weight,
60 parts of base oil;
15 parts of a composite lithium thickener;
5 parts of zinc dialkyl dithiophosphate;
5 parts of an extreme pressure agent;
5 parts of an oiliness agent;
3 parts of di-n-butyl phosphite;
15 parts of an adhesive;
3 parts of polymethacrylate;
and 5 parts of barium dinonyl naphthalene sulfonate.
Further, the base oil is a blend of three types of base oil and four types of base oil, and the weight ratio of the three types of base oil to the four types of base oil is 1:1.
Further, the extreme pressure agent is a blend of sulfurized olefin and phosphate ester with the mass ratio of 1: 0.5.
Preferably, the adhesive is a hydrogenated styrene isoprene copolymer.
Preferably, the oiliness agent is a blend of sulfurized cottonseed oil and molybdenum dialkyl dithiophosphate with the mass ratio of 1: 0.1.
Preferably, the raw materials of the composite lithium thickening agent comprise 12-hydroxystearic acid, lithium hydroxide and glutaric acid; the molar ratio of the 12-hydroxystearic acid to the lithium hydroxide to the glutaric acid is 1: 1.1: 0.2.
the data of the finished product of the lithium complex grease type damping high-temperature bearing lubricant of the embodiment are shown in the following table:
Figure BDA0003407138690000121
example 5
A composite lithium-based grease type damping high-temperature bearing lubricant comprises the following raw materials by weight,
52 parts of base oil;
14 parts of a composite lithium thickener;
3 parts of N, N' -di-sec-butyl-p-phenylenediamine;
3.5 parts of extreme pressure agent;
3 parts of an oiliness agent;
3 parts of di-n-butyl phosphite;
13 parts of an adhesive;
1 part of polymethacrylate type anticoagulant;
1 part of barium dinonyl naphthalene sulfonate.
Further, the base oil is a blend of three types of base oil and four types of base oil, and the weight ratio of the three types of base oil to the four types of base oil is 1: 2.2.
Further, the adhesive is hydrogenated styrene isoprene copolymer.
Further, the oiliness agent is isomeric stearic acid oleic acid.
Preferably, the extreme pressure agent is chlorinated paraffin.
The raw material also comprises 0.4 part by weight of 4' -bromomethyl-2-methyl formate.
Preferably, the raw materials of the composite lithium thickening agent comprise heptadecanoic acid, lithium hydroxide and pimelic acid; the molar ratio of the heptadecanoic acid to the lithium hydroxide to the pimelic acid is 1: 1.1: 0.3.
the data of the finished product of the lithium complex grease type damping high-temperature bearing lubricant of the embodiment are shown in the following table:
Figure BDA0003407138690000131
Figure BDA0003407138690000141
the lubricant can be prepared by any method, and is not described in detail.
While the invention has been described in conjunction with the specific embodiments set forth above, it is evident that many alternatives, modifications, and variations will be apparent to those skilled in the art in light of the foregoing description. Accordingly, it is intended to embrace all such alternatives, modifications, and variations that fall within the spirit and scope of the appended claims.

Claims (8)

1. The composite lithium-based grease type damping high-temperature bearing lubricant is characterized in that: the raw materials of the material comprise, by weight,
20-60 parts of base oil;
10-15 parts of a composite lithium thickening agent;
3-5 parts of an antioxidant;
3-5 parts of an extreme pressure agent;
3-5 parts of an oiliness agent;
3-5 parts of an antiwear agent;
10-15 parts of an adhesive;
1-3 parts of an anticoagulant;
1-5 parts of an antirust agent.
2. The lubricant as set forth in claim 1, characterized in that: the base oil is a blend of three types of base oil and four types of base oil, and the weight ratio of the three types of base oil to the four types of base oil is 1:1-1: 3.
3. The lubricant as set forth in claim 1, characterized in that: the extreme pressure agent is one or a mixture of more of chlorinated paraffin, sulfurized olefin, phosphate and phosphorus-nitrogen compound.
4. The lubricant as set forth in claim 1, characterized in that: the adhesive is one or more of polymethacrylate, polyisobutylene and hydrogenated styrene isoprene copolymer.
5. The lubricant as set forth in claim 1, characterized in that: the oiliness agent is one or more of sulfurized cottonseed oil, phosphonate, dialkyl molybdenum dithiophosphate, stearyl alcohol laurate and oleic acid isostearate.
6. The lubricant of claim 4, wherein: the raw materials also comprise 0.2 to 0.8 weight part of viscosity modifier; the viscosity modifier is a blend of 4' -bromomethyl-2-methyl formate, 3-tert-butyldimethylsiloxy glutaric anhydride and polyisobutylene with the weight ratio of 1:2.6: 1.5.
7. The lubricant of claim 3, wherein: the extreme pressure agent is C3H7-S3-C3H7。
8. The lubricant as set forth in claim 1, characterized in that: the raw materials of the composite lithium thickening agent comprise C15-C20 monocarboxylic acid, lithium hydroxide and C5-C10 dicarboxylic acid; the molar ratio of the monocarboxylic acid, the lithium hydroxide and the dicarboxylic acid is 1: 1.1: 0.3.
CN202111519709.9A 2021-12-13 2021-12-13 Composite lithium-based grease type damping high-temperature bearing lubricant Pending CN114106907A (en)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1052891A (en) * 1989-12-23 1991-07-10 中国石油化工总公司石油化工科学研究院 Composite lithium-base grease
CN103134893A (en) * 2013-01-25 2013-06-05 峨眉山天梁星制药有限公司 High performance liquid chromatography of 3-tert-butyl dimethyl silica glutaric anhydride
CN111423920A (en) * 2020-04-17 2020-07-17 广研德孚科技发展(深圳)有限公司 High-dropping-point high-mechanical-stability composite lithium-based grease and preparation process thereof

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1052891A (en) * 1989-12-23 1991-07-10 中国石油化工总公司石油化工科学研究院 Composite lithium-base grease
CN103134893A (en) * 2013-01-25 2013-06-05 峨眉山天梁星制药有限公司 High performance liquid chromatography of 3-tert-butyl dimethyl silica glutaric anhydride
CN111423920A (en) * 2020-04-17 2020-07-17 广研德孚科技发展(深圳)有限公司 High-dropping-point high-mechanical-stability composite lithium-based grease and preparation process thereof

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Title
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Application publication date: 20220301