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Extreme pressure antiwear additive and preparation method and application thereof

An extreme pressure antiwear agent and reaction technology, which is applied in the field of extreme pressure antiwear agent and its preparation, can solve the problem of poor extreme pressure antiwear performance and thermal stability of phosphate ester amine salt, low strength of tricresyl phosphate oil film, The problem of high activity of di-n-butyl phosphite, to achieve the effect of good oil solubility, excellent anti-wear performance and thermal oxidation stability, good thermal oxidation stability

Inactive Publication Date: 2014-08-13
天津市金岛润滑科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the widely used ashless anti-wear additives of lubricating oil (grease) mainly include di-n-butyl phosphite (T304), tricresyl phosphate (T306), sulfuric acid-formaldehyde-amine condensate (T305), sulfuric acid Double ester amine salt (T307), phosphate ester amine salt (T308B), etc., there are not many varieties, and each has its own advantages and disadvantages. For example, di-n-butyl phosphite has too high activity and serious corrosion during use; tricresyl phosphate oil film strength Not high; thiophosphoric acid-formaldehyde-amine condensate, thiophosphoric acid double ester amine salt has a very bad smell; phosphate amine salt has poor extreme pressure anti-wear performance and thermal stability, etc.

Method used

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  • Extreme pressure antiwear additive and preparation method and application thereof
  • Extreme pressure antiwear additive and preparation method and application thereof
  • Extreme pressure antiwear additive and preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0042] N-octyloxyl group (dodecaline triazole) phosphate derivative, the preparation method is as follows:

[0043] Take 0.3mol of phosphorus oxychloride and 200ml of toluene, stir at 0-10°C, add 0.3mol of n-octanol and 0.6mol of tetrabutylammonium bromide successively, stir at 40°C-50°C for 2 hours, and distill under reduced pressure to collect 250Pa The liquid with a lower boiling range in the range of 110-115°C is the intermediate of di-n-octyloxyphosphate. Add dodecylamine and tetrabutylammonium bromide successively dropwise to the phosphoric acid ester and 200ml ethylbenzene at a temperature of 5°C-15°C, react at 10°C-15°C for 2 hours, and react at 50°C-60°C 3h, then add benzotriazole powder and react at 115°C-135°C for 2h. Nitrogen protection is required throughout the reaction and distillation process. After the reaction is completed, filter, wash, dry, and purify, the obtained yellow transparent liquid is the anti-wear additive n-octyloxy (dodecaline triazole) phosph...

Embodiment 2

[0045] N-butoxy (cyclohexylaminomethylbenzenetriazole) phosphate derivatives, the preparation method is as follows:

[0046]Take 0.3mol phosphorus oxychloride and 250ml ether, stir at 5-15°C, add 0.6mol n-butanol and 0.4mol sodium hydroxide, stir at 50°C-60°C for 2h, and distill under reduced pressure to collect The liquid in the range of 110°C is the intermediate of di-n-butoxy phosphate. Add cyclohexylamine and sodium hydroxide successively dropwise to the phosphoric acid ester and 200ml ethylbenzene at 10℃~20℃, react at 15℃~30℃ for 2h, react at 50℃~60℃ for 3h, then add Tolyltriazole powder was reacted at 120℃~135℃ for 4h. Nitrogen protection is required throughout the reaction and distillation process. After the reaction is completed, after filtration, washing, drying and purification, the obtained yellow transparent liquid is the anti-wear additive n-butoxy (cyclohexylaminomethylbenzenetriazole) phosphate derivative, code-named SPN1. Add SPN1 in the N46 base oil by 0.30...

Embodiment 3

[0048] Isooctyloxy (tridecyl tertiary primary benzene triazole) phosphate derivatives, the preparation method is as follows:

[0049] Take 0.3mol phosphorus oxychloride and 200ml toluene, stir at 10-20°C, add 0.3mol isooctyl alcohol and 0.6mol triethylamine successively, stir at 50°C-60°C for 3 hours, and distill under reduced pressure to collect The liquid in the range of 110-120°C is the intermediate of isooctyloxyphosphate. Add tridecyl tertiary primary amine and triethylamine dropwise to the phosphoric acid ester and 200ml ethylbenzene successively at 10°C-20°C, react at 15°C-20°C for 2 hours, and at 50°C-60°C React for 3 hours, then add benzotriazole powder and react at 120°C to 135°C for 4h. Nitrogen protection is required throughout the reaction and distillation process. After the reaction is completed, filter, wash, dry, and purify, the obtained yellow transparent liquid is the anti-wear additive isooctyloxy (tridecyl tertiary primary amine benzotriazole) phosphate d...

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Abstract

The invention provides an extreme pressure antiwear additive and a preparation method and application thereof; the extreme pressure antiwear additive has a general formula structure as shown in the specification, wherein R1, R2 and R3 in the formula is respectively alkyl groups, aryl groups or aralkyl of a C4-C20 linear chain or branched chain. The extreme pressure antiwear additive provided by the invention is formed by reacting phosphorus oxychloride, C1-C20 alcohols, organic amine and benzotriazole. The extreme pressure antiwear additive provided by the invention can be applied to lubrication oil and lubricating grease with 0.1-2.0wt% of recommended dosage. The extreme pressure antiwear additive provided by the invention has moderate chemical activity, good oil solubility, very good compatibility with other addition agents, no peculiar smell and good thermal oxidation stability, and can effectively reduce the abrasion of devices and oil sedimentation as well as generation of oil sludge. After applied to gear oil, the extreme pressure antiwear additive has excellent antiwear performance and thermal oxidation stability; and simultaneously the extreme pressure antiwear additive can be applied to a lubricating grease and automatic transmission liquid and hydraulic oil of automobiles.

Description

technical field [0001] The invention relates to the field of lubricating oil additives, in particular to an extreme pressure antiwear agent and its preparation method and application. technical background [0002] At present, the widely used ashless anti-wear additives of lubricating oil (grease) mainly include di-n-butyl phosphite (T304), tricresyl phosphate (T306), sulfuric acid-formaldehyde-amine condensate (T305), sulfuric acid Double ester amine salt (T307), phosphate ester amine salt (T308B), etc., there are not many varieties, and each has its own advantages and disadvantages. For example, di-n-butyl phosphite has too high activity and serious corrosion during use; tricresyl phosphate oil film strength Not high; thiophosphoric acid-formaldehyde-amine condensate, thiophosphoric acid double ester amine salt has a very bad smell; phosphate ester amine salt has poor extreme pressure anti-wear performance and thermal stability. [0003] CN1465581A has reported a kind of p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10M137/08C10M177/00C07F9/6518C10N30/06C10N40/08C10N40/04C10N50/10
Inventor 孙兰凤
Owner 天津市金岛润滑科技股份有限公司
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