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Composite calcium sulfonate lubricating grease composition and preparation method thereof

A technology of lubricating grease composition and compound calcium sulfonate, applied in lubricating composition, petroleum industry, thickening agent, etc., can solve the problems of low conversion efficiency, increase cost, etc. Good compression and abrasion resistance

Active Publication Date: 2014-04-23
SHANGHAI HITECRUN SPECIAL LUBRICATE SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the disclosed compound calcium sulfonate lubricating grease preparation method of CN103146465A, the conversion agent mentioned has lauric acid, low molecular weight alcohol, high-purity water, but conversion efficiency is low, wherein the consumption of high alkali value calcium sulfonate has reached more than 48%, greatly increased cost

Method used

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  • Composite calcium sulfonate lubricating grease composition and preparation method thereof
  • Composite calcium sulfonate lubricating grease composition and preparation method thereof
  • Composite calcium sulfonate lubricating grease composition and preparation method thereof

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preparation example Construction

[0045] The preparation method of the composite calcium sulfonate grease composition mentioned in the present invention: it is characterized in that comprising the following steps:

[0046](1) Add base oil accounting for 40-80% of the total base oil and fatty acid accounting for 40-80% of the total fatty acid into the reactor, heat it to about 80°C-85°C and stir evenly, then add high Alkaline value calcium sulfonate, calcium carbonate, conversion water accounting for 50-75% of the total conversion water, and alkylbenzenesulfonic acid accounting for 50-75% of the total amount of alkylbenzenesulfonic acid are added to the above mixture in turn, keeping 80 Stir continuously for 5-10min at around -85°C;

[0047] Wherein, the addition of base oil is preferably 50-65% of the total amount of base oil, the addition of fatty acid is preferably 50-60% of the total amount of fatty acid, and the addition of water for conversion is preferably 65-69% of the total amount of conversion water, ...

Embodiment 1

[0066] In a reaction vessel with a capacity of 1L, put 230g of 150BS base oil (Rwe Group, the same below), 11g of lauryl hydroxystearic acid, heat and stir to 80°C; after the lauryl hydroxystearic acid is fully dissolved, add in sequence 200g of high alkali value calcium sulfonate T106D with a total base value of 400mgKOH / g (Jinzhou Kangtai Lubricating Oil Additive Co., Ltd., the same below), 2g of light calcium carbonate (Zhejiang Xuefeng Calcium Carbonate Co., Ltd., the same below), 20g of conversion water , 7.5g of dodecylbenzenesulfonic acid, stirred at 80°C for 5min; added 3.6g of glacial acetic acid, heated to 96°C, stirred for 60min, the system gradually became viscous; then added 10g of transformation water, 3.8g of dodecylbenzene Benzenesulfonic acid and 1.8g glacial acetic acid (Nantong Huiyu Chemical Co., Ltd., the same below), continue to stir and react at 96°C for 90min, the system gradually becomes viscous, and finally becomes semi-fluid fat; add 200g150BS base oi...

Embodiment 2

[0077]In a reaction vessel with a capacity of 1L, put 190g of 500SN base oil (Rwe Group) and 7.5g of dodecyl hydroxystearic acid, heat and stir to 80°C; after the dodecyl hydroxystearic acid is fully dissolved, add 200g of total High alkalinity calcium sulfonate T106D with an alkalinity of 400mgKOH / g, 4g light calcium carbonate, 16g transformation water, 4.8g dodecylbenzenesulfonic acid, stir at 80°C for 5min; add 3.6g glacial acetic acid, heat up to 100 ℃, stirred and reacted for 50 minutes, the system gradually became viscous; then sequentially added 8g of transformation water, 2.4g of dodecylbenzenesulfonic acid and 1.8g of glacial acetic acid, and continued to stir and react at 100℃ for 80min, and the system became viscous and fatty. Finally, it becomes semi-fluid and fatty; add 120g 500SN base oil, 6g calcium hydroxide (dissolved in 3 times water), 8g boric acid (dissolved in 3 times hot water at 95°C), heat up to 105°C and react for 30min; heat up to 110°C ℃, add 5g of d...

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Abstract

The invention relates to a composite calcium sulfonate lubricating grease composition and a preparation method thereof. The composite calcium sulfonate lubricating grease composition is prepared from the following raw materials in percentage by weight: 18 to 44 percent of high-base-number calcium sulfonate, 0.3 to 3 percent of glacial acetic acid, 3 to 8 percent of water for conversion, 1 to 4 percent of alkyl benzene sulfonic acid, 0.1 to 3 percent of calcium carbonate, 1 to 5 percent of fatty acid, 1 to 5 percent of a boric acid solution counted by using boric acid, 1 to 4 percent of a calcium hydroxide solution counted by using calcium hydroxide and the balance of base oil. The composite calcium sulfonate lubricating grease composition has the advantages of high dropping point, good extreme pressure antiwear property, excellent colloid stability and mechanical stability, and has a wide application range. The invention further relates to the preparation method for the composite calcium sulfonate lubricating grease composition.

Description

technical field [0001] The invention relates to a composite calcium sulfonate grease composition and a preparation method thereof, in particular to a composite calcium sulfonate grease composition with excellent comprehensive performance and high conversion efficiency and a preparation method thereof. Background technique [0002] Composite calcium sulfonate-based grease is a new type of high-temperature multi-effect grease, which has excellent high and low temperature performance, mechanical stability, colloidal stability, oxidation stability, water resistance, corrosion resistance, excellent rust resistance and anti-corrosion It can achieve the effect of lithium base grease without adding any additives. It is one of the most promising lubricating grease varieties. It is used in various harsh working conditions such as dusty, watery, and high loads. have broad application prospects. [0003] Composite calcium sulfonate grease has been widely studied and applied in foreign ...

Claims

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Application Information

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IPC IPC(8): C10M123/02C10M177/00C10N50/10
Inventor 范海粉王瑞兴孙宗圣
Owner SHANGHAI HITECRUN SPECIAL LUBRICATE SCI & TECH
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