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Special additive for wear-resistant hydraulic oil with excellent thermal stability and preparation method thereof

A technology of anti-wear hydraulic oil and additives, which is applied in the field of hydraulic oil, can solve the problems of not meeting the requirements of thermal stability, failing to meet the requirements of hydraulic oil, and poor thermal stability of hydraulic oil, so as to improve thermal stability and reduce Post-waste treatment, thermal stability improvement effect

Active Publication Date: 2019-01-08
XINXIANG RICHFUL LUBE ADDITIVE CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] According to the patents CN102250139A and CN1144223A, the products made into hydraulic oil have poor thermal stability and cannot meet the requirements of hydraulic oil
Patent CN1144223A zinc oxide excess of 25 to 30%, the cost is relatively large, and the waste slag generated later causes higher processing costs; both patents CN102250139A and CN1144223A need to add propellants, patent CN102250139A adds glacial acetic acid, and patent CN1144223A adds concentrated ammonia water, This will increase production costs, increase the burden on subsequent processing, and the thermal stability will not meet the requirements
[0008] The patents and documents currently found are all about the synthesis process of products such as ZDDP (zinc dialkyl dithiophosphate), but the patents and documents specific to the product zinc di-n-dodecyl dithiophosphate hardly

Method used

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  • Special additive for wear-resistant hydraulic oil with excellent thermal stability and preparation method thereof
  • Special additive for wear-resistant hydraulic oil with excellent thermal stability and preparation method thereof

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preparation example Construction

[0029] Such as figure 1 As shown, the present invention also provides a preparation method of a special additive for anti-wear hydraulic oil with excellent thermal stability, comprising:

[0030] Step 1, adding phosphorus pentasulfide in n-dodecyl alcohol in stages, and reacting to generate sulfuric acid:

[0031] Add the weighed n-dodecyl alcohol (n-dodecyl alcohol is added to the excess of 0.5% of the standard reaction mole to observe the stop time of the reaction) in the four-necked flask, and connect the tail gas treatment device, and heat up to 80 ° C to 90 ° C. ℃, preferably warming up to 85 ℃, with the weighed phosphorus pentasulfide, the P content of phosphorus pentasulfide is 28.11~28.2%, preferably the P content of phosphorus pentasulfide is 28.15~28.2%; The time interval for adding phosphorus pentasulfide is 15 minutes, and when adding phosphorus pentasulfide, ensure that the system temperature does not exceed 95°C. After adding phosphorus pentasulfide, raise the s...

Embodiment 1

[0035] Step 1, add weighed n-dodecyl alcohol (0.5% in excess) in the four-necked flask, and connect the tail gas treatment device, heat up to 85°C, weigh 122.0 g of phosphorus pentasulfide solids with a P content of 28.15%, and divide into 4 Add in n-dodecyl alcohol on average every time, the time interval for each addition of phosphorus pentasulfide is 15 minutes, and ensure that the system temperature does not exceed 95°C. After adding phosphorus pentasulfide, raise the system temperature to 110°C and keep it for 7 hours. Stop when the solid of phosphorus pentasulfide no longer decreases. Reaction, then suction filtration while hot, after the reaction finishes, detect qualified sulfuric acid phosphoric acid for subsequent use;

[0036] Step 2, add 230.0g phosphoric acid sulfuric acid in the four-necked flask that is equipped with condenser tube, be warming up to 75 ℃, 29.2g zinc hydroxide (excessive 20%) is added into phosphoric acid sulfuric acid in 4 times on average, the t...

Embodiment 2

[0038]It is 27.9-28.1% phosphorus pentasulfide (the P content of the phosphorus pentasulfide used in the lubricating oil additive industry is generally 27.9-28.1%) to change phosphorus pentasulfide into P content in embodiment 1, remaining part remains the same with embodiment 1, makes pale yellow The transparent finished product is recorded as: product 2.

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Abstract

The invention discloses a special additive for wear-resistant hydraulic oil with excellent thermal stability and a preparation method thereof. The special additive for the wear-resistant hydraulic oilwith excellent thermal stability is zinc di-dodecyl dithiophosphate, and the zinc di-dodecyl dithiophosphate is added in the wear-resistant hydraulic oil to improve the thermal stability of the wear-resistant hydraulic oil. The preparation method comprises the following steps: adding phosphorus pentasulfide in N-dodecanol time by time and reacting to generate thiophosphoric acids; and adding zinchydroxide in the thiophosphoric acids time by time and reacting to generate the zinc di-dodecyl dithiophosphate. The special additive for the wear-resistant hydraulic oil with excellent thermal stability and the preparation method thereof disclosed by the invention have the benefits that the zinc di-dodecyl dithiophosphate is used on the hydraulic oil to obviously improve the thermal stability ofthe hydraulic oil; and the production process is simpler, the industrialization difficulty is low, the application of a catalyst is also eliminated, the later waste treatment is reduced, and the production cost is obviously reduced.

Description

technical field [0001] The invention relates to the technical field of hydraulic oil, in particular to a special additive for anti-wear hydraulic oil with excellent thermal stability and a preparation method. Background technique [0002] Hydraulic oil is an important part of the hydraulic system, which realizes the transmission, conversion and control of energy in the hydraulic system, and at the same time plays the role of lubrication, rust prevention, cooling and shock absorption. Thermal stability is an important indicator to measure the quality of hydraulic oil, and it is also an indicator that users are most concerned about and the easiest to detect. Hydraulic oil additives with poor thermal stability will decompose in the hydraulic system, and the decomposed products will cause the quality of the oil to deteriorate, the lubricating effect will decrease, and harmful acidic substances will be produced to corrode the equipment. ACCIDENT. [0003] Zinc dialkyl dithiopho...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07F9/17C10M137/10C10N30/06C10N30/08C10N40/08
CPCC07F9/17C10M137/10C10M2223/045C10N2030/06C10N2030/08C10N2040/08
Inventor 王建徐坤
Owner XINXIANG RICHFUL LUBE ADDITIVE CO LTD
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