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Boron-containing calcium sulfonate complex lubricating grease composition and preparation method thereof

A technology of lubricating grease composition and complex calcium sulfonate, applied in lubricating composition, petroleum industry, thickener, etc., can solve the problems of poor extreme pressure anti-wear performance and low dropping point of lubricating grease, and achieve good extreme pressure performance , high dropping point, excellent water resistance

Active Publication Date: 2018-10-02
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The complex calcium sulfonate-based lubricating grease transformed into a non-Newtonian body, if the phase inversion is unsuccessful or incomplete, the lubricating grease will be soft, the dropping point will be low, and the extreme pressure and wear resistance of the lubricating grease will be poor

Method used

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  • Boron-containing calcium sulfonate complex lubricating grease composition and preparation method thereof
  • Boron-containing calcium sulfonate complex lubricating grease composition and preparation method thereof
  • Boron-containing calcium sulfonate complex lubricating grease composition and preparation method thereof

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preparation example Construction

[0037] A method for preparing a boron-containing composite calcium sulfonate grease, the composite calcium sulfonate grease is: comprising the following components: based on the weight of the grease, 20-60 wt% of ultra-high alkali value synthetic calcium sulfonate, monohydrocarbyl 0.1-20% of substituted boric acid, 0.5-5wt% of extreme pressure anti-wear agent, 0.5-2wt% of antioxidant, 2-10wt% of adhesive, 0.5-20wt% of base oil and conversion agent.

[0038] The technical scheme that the present invention solves its technical problem also can be:

[0039]A method for preparing boron-containing complex calcium sulfonate lubricating grease, the base oil is one of paraffin base, intermediate base or naphthenic mineral oil, ester oil, polyalphaolefin synthetic oil or polyether synthetic oil One or their mixture, the ultra-high base value synthetic calcium sulfonate, its ultra-high base value is 350 ~ 420mgKOH / g, the extreme pressure antiwear agent can be thiodibutyldithiocarbamic a...

Embodiment 1

[0045] Put 1.8 kg of high alkali value calcium sulfonate with a total base value of 420mgKOH / g in a 5L atmospheric pressure reactor with heating and stirring, and the kinematic viscosity at 40°C is 560mm 2 2 kg of HVI 150BS base oil per s, mix at 50°C for 0.5 hours, add 100g of 12-hydroxystearic acid, 120g of water and stir, raise the temperature to 80°C, keep it for 1 hour, add 60g of methanol and a certain amount of dodecylbenzene The sulfonic acid is converted, and the material gradually becomes fat; the temperature is raised to 100°C, and calcium hydroxide and 45g of phenylboronic acid are added, and the stirring is continued for 1 hour; After stirring for 1 hour, cool down to 100°C and add 0.12 kg of antimony dibutyldithiocarbamate, 0.02 kg of phenyl α-naphthylamine and dialkyl diphenylamine, 0.2 kg of polyisobutylene (molecular weight 1000), stir for 30 minutes, and finally Homogenize and degas. The specific test results of the product are shown in Table 1, and the lase...

Embodiment 2

[0047] Put 1.8 kg of high alkali value calcium sulfonate with a total base value of 400 mgKOH / g and 1 kg of KN4010 naphthenic base oil in a 5 L atmospheric pressure reactor with heating and stirring, and mix at 50 ° C for 0.5 hours , add 120g of 12-hydroxystearic acid and 120g of water and stir, heat up to 80°C, keep for 1 hour, add 50g of n-butanol and a certain amount of dodecylbenzenesulfonic acid and stir, the material gradually becomes fat; heat up to 100°C Add 52g of phenylboronic acid and a certain amount of calcium hydroxide, stir, and keep for 1 hour; heat up to 160°C for dehydration, keep for 2 hours, add 2 kg of KN4010 naphthenic base oil in three times, stir for 1 hour, then cool down to 100°C and add 0.06 kg of di-n-butyl phosphite, 0.02 kg of phenyl α-naphthylamine and dialkyl diphenylamine, 0.2 kg of polymethacrylate (molecular weight 3000), stirred for 30 minutes, and finally, cooled to 40 ° C and ground with three rolls Machine grinding three times to become a...

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Abstract

The invention discloses a boron-containing calcium sulfonate complex lubricating grease composition which comprises base oil and a thickening agent, and is characterized in that the thickening agent comprises a ) or b), wherein a) comprises a reactant of 12-hydroxy stearic acid, mono hydrocarbyl substituted boronic acid and a calcium hydroxide aqueous solution, the molar ratio of the 12-hydroxy stearic acid to the mono hydrocarbyl substituted boronic acid is 1 to (0.1-1); and b) comprises a reactant of 12-hydroxy stearic acid, mono hydrocarbyl substituted boronic acid, benzene sulfonic acid and a calcium hydroxide aqueous solution, and the molar ratio of the 12-hydroxy stearic acid to the mono hydrocarbyl substituted boronic acid to the benzene sulfonic acid is 1 to (0.1-1) to (0.1-1). Theinvention further provides a preparation method of the lubricating grease composition. The prepared lubricating grease is outstanding in high-temperature property, and high in dropping point, the lubricating grease composition is not likely to generate surface hardening, borate is not separated out, crystalline calcium carbonate and other inorganic salts formed in the product are controllable ingrain size, and the reliability of the product in the bearing lubricating process is ensured.

Description

technical field [0001] The invention relates to a boron-containing composite calcium sulfonate-based lubricating grease composition and a preparation method thereof, more precisely, a composite calcium sulfonate-based lubricating grease with a high dropping point and not easy surface hardening and a preparation method thereof. Background technique [0002] Calcium sulfonate detergents are generally used as detergents and anti-rust agents for lubricating oils, but in the 1950s, Sproule et al. found that calcium sulfonate was used as a thickener to make grease and combined it with fatty acid calcium soap Using it can increase the dropping point of the grease, but the thickening ability of the calcium sulfonate-based grease at this time is very small; then in the 1960s, it was found that the Newtonian calcium sulfonate can be transformed into a non-thixotropic grease. Newtonian calcium sulfonate method, while calcium sulfonate-based grease has outstanding performance in high te...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M169/02C10M169/00C10M121/04C10N50/10C10N30/06C10N30/08C10N30/12C10N40/02C10N10/04
CPCC10M121/04C10M169/00C10M169/02C10M2207/1285C10M2219/0445C10M2219/0466C10M2227/006C10N2010/04C10N2030/06C10N2030/08C10N2030/12C10N2040/02C10N2050/10C10N2030/26
Inventor 李建明仇建伟谢龙
Owner PETROCHINA CO LTD
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