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P-N extreme pressure and anti-wear additive and preparation method thereof

A technology of extreme pressure antiwear agent and acid catalyst, which is applied in chemical instruments and methods, additives, petroleum industry, etc., and can solve problems such as high activity, fast phosphorus consumption, and poor corrosion resistance

Active Publication Date: 2013-06-26
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Phosphate ester products have weak neutral phosphate ester activity and are not easy to form a chemical protective film on the friction surface. Acid esters have slightly better performance, but are more acidic, and are prone to chemical corrosion and wear under heavy loads, making their performance worse
Although acid phosphate has good extreme pressure and anti-wear properties, it has high activity, poor corrosion resistance, and fast phosphorus consumption, while acid phosphate amine salt, because the alkyl chain growth of the amine helps to improve oil solubility, the extreme pressure Good wear resistance and low corrosion

Method used

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  • P-N extreme pressure and anti-wear additive and preparation method thereof
  • P-N extreme pressure and anti-wear additive and preparation method thereof
  • P-N extreme pressure and anti-wear additive and preparation method thereof

Examples

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preparation example Construction

[0014] The preparation method of the additive in the present invention comprises reacting the amine compound containing benzotriazole group represented by the formula (II) and the dialkyl phosphite represented by the formula (III) in the presence of an acidic catalyst.

[0015]

[0016] In formula (II), R is hydrogen or C 1 ~C 3 The alkyl group, n is an integer of 1 to 8,

[0017]

[0018] In formula (III), m is an integer of 1-8.

[0019] In the above reaction, the molar ratio of the amine compound containing benzotriazole group to the alkyl phosphite is 1:1-1.5, preferably 1:1-1.2.

[0020] The above reaction is preferably carried out in the presence of an acidic catalyst, and the acidic catalyst can be an inorganic acid or an organic acid, and the preferred inorganic acid is hydrochloric acid or nitric acid. The ratio of the acid to the total mass of reactants is 0.005-0.05:1, preferably 0.008-0.03:1.

[0021] The more preferred method of the above reaction is: he...

example 1

[0033] Stir and heat 1.0mol (194g) dibutyl phosphite and 1.0mol (256g) N, N-dibutenyl methylene benzotriazole to 80°C, add dropwise 13.5g hydrochloric acid solution containing 5g HCL, and heat up to React at 120°C for 2 hours, and distill under reduced pressure to obtain a yellow transparent liquid, which is (N-butyl N-butenyl)methylenebenzotriazole dibutyl phosphite with the following structural formula, which is designated as Additive A.

[0034]

[0035] The element content of the additive A was 63.3% by mass of carbon, 9.0% by mass of hydrogen, 9.4% by mass of oxygen, 6.2% by mass of phosphorus, and 10.8% by mass of nitrogen.

example 2

[0037] Stir and heat 1.0mol (306g) dioctyl phosphite and 1.0mol (256g) N, N-dibutenyl methylene benzotriazole to 80°C, add dropwise 13.5g hydrochloric acid solution, which contains 5g HCL, and heat up to React at 120°C for 4 hours, and distill under reduced pressure to obtain a yellow transparent liquid, which is (N-butyl N-butenyl)methylenebenzenetriazole dioctyl phosphite with the following structural formula, which is designated as Additive C.

[0038]

[0039] The element content of the additive C was 69.7% by mass of carbon, 10.1% by mass of hydrogen, 8.1% by mass of oxygen, 4.9% by mass of phosphorus, and 10.2% by mass of nitrogen.

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Abstract

The invention discloses a P-N extreme pressure and anti-wear additive of formula (I), wherein, R represents H or C1-C3 alkyl, and n and m are respectively represent any integer from 1 to 8. The additive has not only excellent oxidation resistance, rust resistance and corrosion resistance, but also excellent extreme pressure and anti-wear property, can be used as a multifunctional additive for hydraulic oil, gear oil and various industrial lubricating greases, especially as an additive for ashless antiabrade oil alone.

Description

technical field [0001] The invention relates to an extreme pressure antiwear agent and a preparation method thereof, in particular to a phosphorus-nitrogen type extreme pressure antiwear agent and a preparation method thereof. Background technique [0002] Mechanical equipment has higher and higher requirements for extreme pressure, anti-wear and thermal stability of lubricating oil. In order to meet the lubricating requirements of mechanical equipment, both at home and abroad are researching and developing highly efficient and multifunctional lubricating oil additives to meet the increasingly stringent performance requirements of lubricating oils. Phosphorus-nitrogen extreme pressure and antiwear additives have high load-carrying capacity and pleiotropic effects. Early phosphorus-type extreme pressure anti-wear agents were widely used in lubricating oils, mainly including phosphite and phosphate ester series. Common phosphorus-containing agent products include T304 (di-n-...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10M137/04C07F9/141C10N30/06C10N40/08C10N40/04
Inventor 鱼鲲李云鹏
Owner CHINA PETROLEUM & CHEM CORP