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Calcium sulfonate-naphthenate-based polyurea grease and preparation method thereof

A technology of calcium naphthenate-based, polyurea grease, applied in the field of grease, can solve the problems of high price of calcium sulfonate with high base value, not being rapidly promoted, complicated preparation process, etc., and achieve excellent corrosion resistance and resistance. High temperature, low cost and simple preparation process

Active Publication Date: 2018-01-05
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Using calcium sulfonate with high base value as raw material to produce lubricating grease, because of its excellent high and low temperature performance, mechanical stability, colloidal stability, oxidation stability, water resistance, corrosion resistance and anti-rust and anti-wear properties, it has been put into the market since then. Since then, it has attracted widespread attention in the grease industry at home and abroad. However, although the high-basic value calcium sulfonate-based grease has excellent comprehensive properties, the high price of its raw material high-basic value calcium sulfonate and its own complicated preparation process As a result, it has not been promoted rapidly. At the same time, as people's requirements for environmental protection are getting higher and higher, the pollution of the environment by the sulfonation process that must be passed through the production process of high-basic calcium sulfonate is also increasingly concerned by people.

Method used

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  • Calcium sulfonate-naphthenate-based polyurea grease and preparation method thereof
  • Calcium sulfonate-naphthenate-based polyurea grease and preparation method thereof
  • Calcium sulfonate-naphthenate-based polyurea grease and preparation method thereof

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preparation example Construction

[0020] The present invention also provides a preparation method of the above-mentioned lubricating grease.

[0021] In one aspect, the present invention provides a calcium sulfonate-calcium naphthenate-based polyurea grease, based on the weight of the grease, comprising the following components: 10-70% by weight of non-Newtonian calcium sulfonate-cycloalkane Calcium acid; 0.5-30 wt% polyurea compound; 10-80 wt% base oil.

[0022] Preferably, based on the weight of the grease, the following components are included: 20-65 wt% non-Newtonian calcium sulfonate-calcium naphthenate; 1-20 wt% polyurea compound; 20-70 wt% base Oil.

[0023] The non-Newtonian calcium sulfonate-calcium naphthenate is in the infrared spectrum of 873cm -1 -886cm -1 The characteristic absorption peak of crystalline calcium carbonate appears at the place, and the total base value is 250mgKOH / g-450mgKOH / g, preferably 300mgKOH / g-400mgKOH / g. The non-Newtonian calcium sulfonate-calcium naphthenate is obtaine...

Embodiment 1

[0081] This example is used to illustrate the calcium sulfonate-calcium naphthenate based polyurea grease prepared by the present invention.

[0082] Raw material components: ultra-high basic value calcium sulfonate (total basic value 400mgKOH / g, 24kg); ultra-high basic value calcium naphthenate (total basic value 400mgKOH / g, 6kg); HVI150BS lubricating base oil (100 ℃ Kinematic viscosity of 31mm 2 / s, 30kg); naphthenic acid (total acid value 180mgKOH / g, 2.8kg); acetic acid (0.56kg); boric acid (2.32kg); octadecylamine (1.5kg); MDI (0.7kg); HVI500SN lubrication Base oil (100℃ kinematic viscosity is 11mm 2 / s, 18kg).

[0083] Add 24kg of ultra-high base number calcium sulfonate with a total base value of 400mgKOH / g and 6kg of ultra-high base number with a total base value of 400mgKOH / g into a 160L atmospheric pressure reactor with heating, stirring, circulation and cooling. Base calcium naphthenate and 30kg of HVI150BS lubricating base oil, stir, heat up to 50°C, and keep the...

Embodiment 2

[0086] This example is used to illustrate the calcium sulfonate-calcium naphthenate based polyurea grease prepared by the present invention.

[0087] Raw material components: ultra-high basic value calcium sulfonate (total basic value 400mgKOH / g, 24kg); ultra-high basic value calcium naphthenate (total basic value 400mgKOH / g, 6kg); HVI150BS lubricating base oil (100 ℃ Kinematic viscosity of 31mm 2 / s, 30kg); naphthenic acid (total acid value 180mgKOH / g, 2.8kg); acetic acid (0.56kg); boric acid (2.32kg); octadecylamine (1.5kg); MDI (0.7kg); HVI500SN lubrication Base oil (100℃ kinematic viscosity is 11mm 2 / s, 18kg).

[0088] Add 24kg of ultra-high base number calcium sulfonate with a total base value of 400mgKOH / g and 6kg of ultra-high base number with a total base value of 400mgKOH / g into a 160L atmospheric pressure reactor with heating, stirring, circulation and cooling. Base calcium naphthenate and 30kg of HVI150BS lubricating base oil, stir, heat up to 50°C, and keep the...

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Abstract

The invention discloses a calcium sulfonate-calcium naphthenate-based polyurea grease, which is characterized in that, based on the weight of the grease, it comprises the following components: 10-70% by weight of non-Newtonian calcium-naphthenate calcium-ring Calcium alkanoate; 0.5-30% by weight polyurea compound; 10-80% by weight base oil. The invention also discloses a preparation method of calcium sulfonate-calcium naphthenate-based polyurea grease and the prepared calcium sulfonate-calcium naphthenate-based polyurea grease. The calcium sulfonate-naphthenate calcium-based polyurea grease of the present invention not only has the same excellent corrosion resistance and high temperature resistance as the calcium sulfonate-based polyurea grease, but also has better performance than calcium sulfonate-based polyurea grease. Urea grease has mechanical stability, water resistance, adhesion, salt spray resistance, colloidal stability, extreme pressure and anti-wear properties, and has a longer lubrication life. The preparation process of the lubricating grease of the invention is simple, environment-friendly, low in cost and stable in product quality.

Description

technical field [0001] The present invention relates to grease, in particular to a calcium sulfonate-calcium naphthenate-based polyurea grease and a preparation method thereof. Background technique [0002] Calcium sulfonate has been used as a detergent and rust inhibitor for lubricating oil for decades, and is widely used as an additive for internal combustion engine lubricating oil. Activated calcium alkyl benzene sulfonate or calcium alkyl carboxylate can be dispersed into diluent oil to form a colloidal dispersion system. High base number calcium sulfonate can be divided into petroleum calcium sulfonate and synthetic calcium sulfonate according to different production methods. Calcium petroleum sulfonate is made with fuming sulfuric acid or SO 3 Petroleum sulfonic acid, a by-product of sulfonated mineral lubricating oil in the production of white oil, is reacted with Ca(OH) 2 Reaction, carbonation and other high alkalinization techniques; synthesis of calcium sulfonat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10M169/06C10M177/00C10N30/06C10N30/12
Inventor 孙洪伟何懿峰段庆华张建荣刘中其姜靓陈政郑会
Owner CHINA PETROLEUM & CHEM CORP