CN103965990B - A kind of method of improving zinc dialkyl dithiophosphate and base oil compatibility - Google Patents
A kind of method of improving zinc dialkyl dithiophosphate and base oil compatibility Download PDFInfo
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- CN103965990B CN103965990B CN201310035978.7A CN201310035978A CN103965990B CN 103965990 B CN103965990 B CN 103965990B CN 201310035978 A CN201310035978 A CN 201310035978A CN 103965990 B CN103965990 B CN 103965990B
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Abstract
The present invention relates to a kind of method of improving zinc dialkyl dithiophosphate and base oil compatibility; Succimide class dispersant is mixed by 1000:15-45:40-80:15-45 weight ratio with methyl benzotriazole, boric acid, water, under the temperature conditions of 100-200 DEG C, heat 2-4 hour, after decompression removes water and volatile materials, obtain modification dispersant; Be that 1:2～1:20 is composite by weight by modification dispersant and zinc dialkyl dithiophosphate, obtain compound additive; Compound additive is added in lubricating oil, and addition is gross weight 1.5%; This method has effectively solved the problem of zinc dialkyl dithiophosphate and hydrogenated base oil or PAO base oil compatibility, has improved lubricating oil storage stability, has improved the extreme pressure property of lubricating oil, its FZG failure level is greater than 12 grades, corrosion resistance is good, saves batching, and process is simple.
Description
Technical field
The present invention relates to a kind of method of improving zinc dialkyl dithiophosphate and base oil compatibility,Particularly one is improved zinc dialkyl dithiophosphate and hydrogenated base oil or polyalphaolefin (PAO)The method of the compatibility of base oil.
Background technology
Zinc dialkyl dithiophosphate (ZDTP) is a kind of purposes lube oil additive very widely,For improving wear resistence and the anti-oxidative stability of IC engine lubricating oil and Industrial Oil.
In internal combustion engine lubrication oil formula, zinc dialkyl dithiophosphate generally will and divide with detersivePowder (the western type dispersant of alkyl alkaline earth sulfonate, phenates, polyalkenyl succimide or Manny),Compound the making such as viscosity index improver, auxiliary antioxidant (shielding phenol, alkyl diphenylamine), pour-point depressantWith. In complexing agent, zinc dialkyl dithiophosphate proportion reaches as high as 25%.
In industrial lubrication oil formula, zinc dialkyl dithiophosphate generally will with auxiliary antioxidant (alkaneBase shielding phenol, alkyl diphenylamine or alkyl naphthylamines etc.), antirust agent (carboxylic acid, imidazolidine derivatives orAmide derivatives etc.), demulsifier (polyethers or silicon oil modified polyethers or amine and epoxy resin condensation product orPhosphate amine salt), anti-foaming agent (polymethacrylates or methylsiloxane), matal deactivator (benzeneTriazole type or thiadiazole derivative) etc. compound use. In complexing agent, dialkyl dithio phosphorusAcid zinc proportion reaches as high as 75%.
In recent years, increasing IC engine lubricating oil and industrial lubricant adopt hydrogenated base oil(APIII class base oil and/or APIIII class base oil) or polyalpha olefin synthetic base oilPAO(APIIV class base oil) be in harmonious proportion preparation with additive, to improve finished lubeAntioxygenic property, improves the high temperature performance of lubricating oil, extends the drain period.
But, as shown in table 1, due to hydrogenated base oil (APIII class and/or APIIII class basisOil) and PAO(APIIV class base oil) saturated hydrocarbon content be not less than 90%, unsaturation hydrocarbonContent is very little, makes the compatibility variation of itself and zinc dialkyl dithiophosphate polar additives, adjustsWith finished lube there is problems of stability in storage, at high temperature or while storing for a long time, lubricatedFry dried food ingredients is raw to be precipitated, and destroys the performance of lubricating oil, affects the result of use of lubricating oil. Especially when twoAlkyl zinc dithiophosphate and matal deactivator are simultaneously as additive, with hydrogenated base oil (APIIIClass and/or APIIII class base oil) while being in harmonious proportion, more easily there is the storage stability of finished lubeProblem.
At present, mainly by adding a certain amount of dispersant (polyisobutene succinimide class chemical combinationThing) improve zinc dialkyl dithiophosphate compatibility. But, when base oil batch or composition are sent outWhile giving birth to small variation, lubricating oil still there will be precipitation, and problems of stability in storage is not still separated completelyCertainly.
The classification of table 1API base oil
Summary of the invention
The object of the present invention is to provide one to improve zinc dialkyl dithiophosphate and hydrogenated base oilOr the method for PAO base oil compatibility, zinc dialkyl dithiophosphate is applicable to various types ofHydrogenated base oil or PAO base oil compatibility, obtain splendid storage stability.
The method of improving zinc dialkyl dithiophosphate compatibility of the present invention, is characterized in that
A, by succimide class dispersant and methyl benzotriazole, boric acid, waterPress 1000:15-45:40-80:15-45 weight ratio and mix, under the temperature conditions of 100-200 DEG C, heat2-4 hour obtains modification dispersant after decompression removes water volatile materials;
B, by modification dispersant and zinc dialkyl dithiophosphate by weight being that 1:2～1:20 is composite,Obtain compound additive.
C, compound additive is added in lubricating oil, to add weight be total amount below 1.5%.
Feature of the present invention is: modification dispersant and zinc dialkyl dithiophosphate are mixed with compoundAdditive, is applied in lubricating oil, efficiently solves zinc dialkyl dithiophosphate and hydrogenation basisThe problem of oil or PAO base oil compatibility, has improved lubricating oil storage stability. Improve lubricatedThe extreme pressure property of oil, its FZG failure level is greater than 12 grades. Do not add the lubricating oil of matal deactivatorStill there is good corrosion resistance, save batching. Process is simple.
Detailed description of the invention
Embodiment 1
Succimide class dispersant T154 and methyl benzotriazole, boric acid, water are pressed to 1000:15:40:15Weight ratio is mixed, and heats 2 hours under the temperature conditions of 200 DEG C, removes water and volatility through decompressionAfter material, obtain modification dispersant. By modification dispersant and zinc dialkyl dithiophosphate in mass ratioComposite for 0.2:0.4, obtain compound additive.
Compound additive and saturated hydrocarbon content are greater than to 90%, and sulfur content is less than 0.03% II classHydrogenated base oil and other additives are mixed with hydraulic transmission oil, and compound additive consumption is gross weight0.6%.
Embodiment 2
Succimide class dispersant HITECE644 and methyl benzotriazole, boric acid, water are pressed1000:45:60:30 weight ratio is mixed, and heats 4 hours under the temperature conditions of 100 DEG C, de-through reducing pressureDewater and volatile materials after obtain modification dispersant. By modification dispersant and dialkyl dithio phosphorusAcid zinc is that 0.2:0.6 is composite in mass ratio, obtains compound additive.
Compound additive and saturated hydrocarbon content are greater than to 90%, and sulfur content is less than 0.03% III classPAO base oil and other additives are mixed with hydraulic transmission oil, and compound additive consumption is gross weight0.8%.
Embodiment 3
Succimide class dispersant T161 and methyl benzotriazole, boric acid, water are pressed to 1000:30:80:45Weight ratio is mixed, and heats 3 hours under the temperature conditions of 150 DEG C, removes water and volatility through decompressionAfter material, obtain modification dispersant. By modification dispersant and zinc dialkyl dithiophosphate in mass ratioComposite for 0.5:10, obtain compound additive.
Compound additive and saturated hydrocarbon content are greater than to 90%, and sulfur content is less than 0.03% III classHydrogenated base oil and other additives are mixed with hydraulic transmission oil, and compound additive consumption is gross weight1.5%.
The invention is not restricted to above-described embodiment, can in the parameter area limiting, join in any proportionSystem.
Following table has provided under same stored condition, the comparative result of the present invention and comparative example.
Other additives comprise detersive, anti-foaming agent, antirust agent, auxiliary antioxidant, demulsifier etc.
Experimental result surface, embodiment 1-3 does not precipitate, storage stability excellence, and copper sheet corruptionErosion experiment reaches 1b level, and FZG failure level reaches 12 grades, has absolutely proved superiority of the present invention.Comparative example 1 containing metal passivator and antirust agent, containing dispersant, although copper corrosion experiment is aobviousGood corrosion resistance is shown, but has precipitation, have problems of stability in storage. Comparative example 2-3 is containing generalReduction of fractions to a common denominator powder, matal deactivator and antirust agent, corrosion resistance is good, but has precipitation to occur, existsProblems of stability in storage. Comparative example 4-5 is containing metal passivator not, without precipitation, there is no storage stabilityProblem, but copper corrosion experiment is 3a level, and corrosion resistance is poor.
Claims (1)
1. a method of improving zinc dialkyl dithiophosphate and base oil compatibility, is characterized in that:
A, succimide class dispersant and methyl benzotriazole, boric acid, water are pressed1000:15-45:40-80:15-45 weight ratio is mixed, and under the temperature conditions of 100-200 DEG C, heats 2-4Hour, after removing water and volatile materials, decompression obtains modification dispersant;
B, by modification dispersant and zinc dialkyl dithiophosphate by weight being that 1:2～1:20 is composite,Obtain compound additive;
C, compound additive is added in lubricating oil, addition is gross weight 1.5%;
The saturated hydrocarbon content of described base oil is not less than 90%.
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| CN201310035978.7A CN103965990B (en) | 2013-01-30 | 2013-01-30 | A kind of method of improving zinc dialkyl dithiophosphate and base oil compatibility |
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| CN201310035978.7A CN103965990B (en) | 2013-01-30 | 2013-01-30 | A kind of method of improving zinc dialkyl dithiophosphate and base oil compatibility |
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| CN103965990A CN103965990A (en) | 2014-08-06 |
| CN103965990B true CN103965990B (en) | 2016-05-11 |
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| CN110484332B (en) * | 2019-09-16 | 2021-08-31 | 辽宁百特润滑科技有限责任公司 | Hydraulic oil composite additive, preparation method thereof and hydraulic oil |
| CN113214317B (en) * | 2021-05-07 | 2024-02-02 | 新乡市瑞丰新材料股份有限公司 | High-stability zinc dialkyl dithiophosphate and preparation method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0359522A1 (en) * | 1988-09-16 | 1990-03-21 | Ethyl Petroleum Additives, Inc. | Oil-soluble phosphorus antiwear additives for lubricants |
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- 2013-01-30 CN CN201310035978.7A patent/CN103965990B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0359522A1 (en) * | 1988-09-16 | 1990-03-21 | Ethyl Petroleum Additives, Inc. | Oil-soluble phosphorus antiwear additives for lubricants |
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