Lead compound, preparation method and application thereof and lubricating oil composition

A lead compound and compound technology, applied in lubricating compositions, carboxylate preparation, organic chemistry, etc., can solve the problems of poor oil solubility, affecting extreme pressure and anti-wear effects, etc., to ensure normal work, good solubility, The effect of good lubricity

Pending Publication Date: 2022-05-06
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] However, the existing lead naphthenate has poor oil solubility in polyalkylcyclopentane, and after dissolution, there will be phenomena such as stratification and precipitation, which will affect its extreme pressure and anti-wear effect.
[0008] At the same time, the extreme pressure anti-wear and anti-friction properties of existing lead-containing anti-wear agents used in land machinery transmission lubricants need to be further improved

Method used

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  • Lead compound, preparation method and application thereof and lubricating oil composition
  • Lead compound, preparation method and application thereof and lubricating oil composition
  • Lead compound, preparation method and application thereof and lubricating oil composition

Examples

Experimental program
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preparation example Construction

[0083] 1) preparation of tetradecylacetophenone

[0084] In a 1000 ml three-necked flask with temperature-controlled stirring, add 350 ml of CCl 4 , 50 grams of anhydrous AlCl 3 and 50 grams of acetyl chloride (0.637mol), add 174 grams of tetradecylbenzene (0.634mol) dropwise, control the rate of addition so that the temperature of the material is between 0 and 5°C, and react at 20 to 25°C after the addition is complete 1h, then the organic layer was separated from the reaction mixture, washed with acid and water until neutral, dried with anhydrous sodium sulfate, filtered, and evaporated to remove the solvent to obtain tetradecylacetophenone.

[0085] 2) Oxidation of Tetradecyl Acetophenone to Alkyl Benzoic Acid

[0086] At room temperature, 200 ml of chloroform, 120 ml of NaOCl and 20 g of NaOH were added to a 1000 ml three-necked flask. 31.65 g (0.1 mol) of p-tetradecylacetophenone was added dropwise, and after the addition was completed, the temperature was raised to re...

preparation example 1

[0101] This preparation example is used to illustrate the preparation method of the polyalkylcyclopentane used in the following examples.

[0102] Mix n-decyl alcohol, solid potassium hydroxide and dicyclopentadiene and put them into a flask equipped with a stirrer, a separatory funnel, a condenser tube, a water separator and a thermometer for heating reaction. The reaction temperature is 220-250°C, When no more water is generated in the water vessel, the reaction is stopped, and the reaction product is washed with water, dried and filtered to obtain poly-n-decylcyclopentadiene. Poly-n-decylcyclopentadiene and n-heptane are made into a solution with a dilution rate of 10%. After mixing 200g of this solution with 3.6g of amorphous nickel catalyst, put it into an autoclave, and feed hydrogen until the hydrogen pressure reaches 5MPa , heated to 155°C under stirring, reacted for 20h, filtered the reaction product after cooling, and removed the solvent to obtain poly-n-decylcyclope...

Embodiment 1

[0104] In 1000 milliliters of there-necked flasks with temperature control, water cooling, stirring, add 127.5 grams (0.27mol) of naphthenic acid A earlier, tetradecylbenzoic acid (total acid value is 167mgKOH / g, mass fraction is 95%, the average relative The molecular weight is 318) 63.6 grams (0.2mol), stir the material, when the temperature of the material rises to 115°C, slowly add 35.7 grams (0.16mol) of lead oxide and 1.7 grams of propanol within 30 minutes. After 2 hours of constant temperature reaction, then add 100 grams of naphthenic acid A (0.21mol), slowly add lead oxide 35.7 grams (0.16mol) in 30 minutes, then react for 4 hours, treat that there is no lead oxide solid particle in the material, the material Cool down when it is transparent, add 200 grams of No. 120 solvent gasoline at 60 ° C, filter after dilution, and distill the filtrate to obtain 348 grams of extreme pressure antiwear agent A (theoretical product amount is 357 grams) of viscous dark brown. The r...

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Abstract

The invention provides a lead compound, a preparation method and application thereof and a lubricating oil composition containing the lead compound. The structure of the lead compound is shown as a formula (I), wherein a group A in the formula (I) is selected from a group shown as a formula (II) and/or a group shown as a formula (III); in the formula (II), the R0 group is a straight chain or branched chain alkylene group of C1-6; x is an integer between 0 and 4, and x R1 groups are respectively and independently selected from C2-40 straight-chain or branched-chain alkyl groups; the ring group is a (x + 1)-valence C3-20 cycloalkyl group, and the ring group is a 1-5-ring cycloalkyl group; and in the formula (III), the R2 group is a C2-30 straight chain or branched chain alkyl group. The lead compound has excellent oil solubility, wear resistance, friction reduction and oxidation resistance, is an anti-wear agent with excellent performance, and can be used for lubrication of vehicle gears, industrial gears and space moving parts and lubrication of transmission of other mechanical parts.

Description

technical field [0001] The invention relates to a lead compound, in particular to a lead compound with excellent wear resistance and oxidation resistance and a preparation method thereof. Background technique [0002] Lead naphthenate is an extreme pressure and antiwear agent with excellent performance. It forms a lead-containing extreme pressure film on the surface of the friction pair through chemical reaction, which can reduce the shear strength of the contact surface of the friction pair and the friction coefficient during relative motion. The purpose is to make the mechanical equipment work normally. Therefore, it is widely used in industrial lubricants, greases and space lubricants. [0003] Chinese patent 201410581489.6 "An Anti-Oxidation Lubricating Oil for Automobiles" discloses an anti-oxidation lubricating oil for automobiles, including dienyl succinimide, alkylated diphenylamine, lead naphthenate, polymethacrylate, petroleum Barium borate, polyalphaolefin, meth...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C63/04C07C53/134C07C53/136C07C51/41C10M129/50C10M169/04C10N30/06C10N30/10C10N40/04
CPCC07C63/04C07C53/134C07C53/136C10M129/50C10M169/04C07C2601/08C07C2601/14C07C2602/28C07C2602/22C07C2602/24C07C2603/16C07C2603/10C10M2203/045C10M2207/141C10M2207/16
Inventor 刘依农梁宇翔尹开吉马静
Owner CHINA PETROLEUM & CHEM CORP
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