Ash-free hydraulic oil composition

An ashless hydraulic oil and composition technology, applied in the field of lubricating oil composition and ashless hydraulic oil composition, can solve the problems of poor comprehensive performance of hydraulic oil, poor oxidation stability, poor solubility and susceptibility, etc., and achieve excellent Filterability, excellent hydrolysis stability, excellent effect of abrasion resistance

Active Publication Date: 2016-07-06
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0017] The technical solution of the present invention is to overcome the poor oxidation stability existing in the prior art, the service life is short, the solubility and susceptibility of additives such as anti-wear agent, metal deactivator, antirust agent are relatively poor, hydraulic oil is in water condition In order to provide an ashless hydraulic oil composition with excellent hydrolysis stability, filterability, anti-wear and oxidation stability and low sludge, it can meet the requirements of GB11118.1- 2011 and DenisonHF-0 (2012) specifications

Method used

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Effect test

Embodiment 1

[0093] The antiwear agent of the ashless hydraulic oil composition is a compound of tri-tert-butylphenyl thiophosphate and 3-(O,O-diisopropyl dithiophosphoryl)-propionic acid, and the mass percentages are respectively 28.6 % and 7.1%, the rust inhibitor is a compound of n-oleyl sarcosine and amino acid derivative A, the mass percentages are 4.3% and 7.1%, and the antioxidant is 2,6-di-tert-butyl p-cresol , the mass percentage is 42.9%, the metal deactivator is N,N-di-n-butylaminomethylene methyl benzotriazole, the mass percentage is 7.1%, the polysuccinimide derivative dispersant is succinyl Imine T154A, the mass percentage is 2.9%. Wherein the amino acid derivative A structural formula is:

[0094]

Embodiment 2

[0096] The antiwear agent of the ashless hydraulic oil composition is tri-tert-butylphenyl thiophosphate and 3-(O, O-diisopropyldithiophosphoryl)-2-methyl-propionic acid methyl ester, The mass percentages are 27.4% and 13.7%, the antirust agent is a compound of n-oleyl sarcosine and amino acid derivative A, the mass percentages are 2.7% and 6.8%, respectively, and the antioxidant is 2,6-di-tert-butyl P-cresol, the mass percentage is 41.1%, the metal deactivator is N,N-di-n-butylaminomethylene methyl benzotriazole, the mass percentage is 4.2%, polysuccinimide derivative dispersant Succinimide T154A, the mass percentage is 4.1%.

Embodiment 3

[0098] The antiwear agent of the ashless hydraulic oil composition is tri-tert-butylphenyl phosphorothioate and 3-(O,O-diisopropyldithiophosphoryl)-2-methyl-propionic acid, mass percent 37.5% and 2.5%, the antirust agent is n-oleyl sarcosine and amino acid derivative A compound, the mass percentages are 6.3% and 6.3%, and the antioxidant is 2,6-di-tert-butyl p-methyl 25% and 12.5% ​​by mass respectively, the metal deactivator is N,N-di-n-butylaminomethylene methyl benzotriazole, the mass percentage is 6.3%, poly The succinimide derivative dispersant succinimide T154A is 3.6% by mass.

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Abstract

The invention belongs to the technical field of a lubricating composition, and relates to an ash-free hydraulic oil composition. The ash-free hydraulic oil composition comprises the following components by mass percentage: 30-42% of an antiwear agent, 9-14% of an antirust agent, 37-50% of an anti-oxidant, 4-8% of a metal deactivator, and 1-5% of a dispersant. The antiwear agent is a dithio alkyl phosphate and/or a monothio alkyl phosphate. The antirust agent is a compound mixture of a sarcosine derivative and an amino acid derivative or an organic amide. The anti-oxidant is an alkyl group to an aliline or/and a hindered phenol. The metal deactivator is a thiadiazole derivative or a benzotriazol derivative. The dispersant is a polysuccimide derivative. The ash-free hydraulic oil composition has excellent antiwear performance, low greasy filth, and long oxidation life and excellent filterability and hydrolysis stability, and satisfies the GB 11118.1-2011 and Denison HF-0(2011) specification requirements.

Description

technical field [0001] The invention belongs to the technical field of lubricating compositions, and relates to a lubricating oil composition, in particular to an ashless hydraulic oil composition. Background technique [0002] As the power transmission medium of hydraulic system, hydraulic oil is a compound balance system containing various additives, and zinc dialkyldithiophosphate (ZDDP) is widely used as multifunctional antiwear agent. However, zinc-containing hydraulic oil is easy to cause heavy metal pollution to the environment, and when it is polluted by water during use, zinc dialkyl dithiophosphate ZDDP is easy to hydrolyze to produce sludge to block the filter, and it is corrosive to copper to a certain extent. [0003] Ashless hydraulic oil can make up for the lack of zinc-containing hydraulic oil, avoid heavy metal environmental pollution, reduce ash and sludge pollution in the oil, improve cleanliness and filterability, and comply with EU ecological regulations...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M161/00C10M133/16C10N40/08C10N30/06C10N30/10C10N30/12
Inventor 郑东东王辉刘汉壮苗新峰李春诚郝玉杰王春晓
Owner PETROCHINA CO LTD
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