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Calcium hydroxyapatite based calcium sulfonate grease compositios and method of manufacture

A technology of calcium sulfonate and composition, which is applied in the field of calcium carbonate-based calcium sulfonate oil composition and its preparation, can solve the problems of not providing and simultaneously improving calcium sulfonate compound oil technology, interfering with the transformation process, and inferior oil compounds

Active Publication Date: 2014-08-27
NCH CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The first reason is that calcium carbonate is generally considered a weak base, unsuitable for use in reactions with complexing acids
The second reason is that the presence of unreacted solid calcium compounds (including calcium carbonate, calcium hydroxide, or calcium oxide) interferes with the transformation process, resulting in inferior oil compound
[0009] Furthermore, the prior art does not provide a calcium sulfonate complex grease that simultaneously improves thickener yield and dropping point

Method used

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  • Calcium hydroxyapatite based calcium sulfonate grease compositios and method of manufacture

Examples

Experimental program
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Effect test

Embodiment 1

[0033] Example 1: The calcium sulfonate compound grease according to the present invention is prepared as follows: 36.00 parts by weight of 400TBN overbased calcium sulfonate (with amorphous calcium carbonate dispersed therein) is added to an open mixing container, and then 33.38 parts are added The solvent-neutral group I paraffinic base oil and 1.00 parts of PAO. The viscosity of the paraffinic base oil is about 600SUS at 100°F, and the viscosity of the PAO is 4cSt at 100°C. Start stirring without heating with a planetary stirring paddle. Then 3.60 parts of main C12 alkyl benzene sulfonic acid was added as accelerating acid. After 20 minutes, 7.58 parts of finely divided calcium carbonate was added as the basic calcium source, the average particle size of the calcium carbonate was less than 5 microns, and it was mixed for 10 minutes. Then 1.80 parts of hexanediol and 4.5 parts of water were added as conversion agents. The mixture is heated until the temperature reaches 190°...

Embodiment 2

[0034] Example 2: Another batch of grease was made using the same equipment, raw materials, quantity and manufacturing process as the grease of Example 1, except that after conversion and after adding complex acids (12-hydroxystearic acid, acetic acid, and phosphoric acid) ) Add calcium carbonate immediately before. The composition of this grease is the same as the grease of Example 1 above. The initial penetration of the final grease is 285 and the penetration of 60 working strokes is 288. The dropping point is 555°F. The proportion of high-alkali oil-soluble calcium sulfonate in this batch of fats and oils is 36.0%. It can be seen that the grease of this example is 35 points softer than the grease of Example 1 and has a significantly lower drop point. Since the only difference between the two fats and oils is the addition time of calcium carbonate relative to the conversion, the softer consistency (lower thickener yield) and low dropping point must be due to this differenc...

Embodiment 3

[0036] Example 3: Another batch of grease was made using the same equipment, raw materials, quantity and manufacturing process as the grease of Example 1, except for the following changes: (1) Add acetic acid immediately before adding hexanediol and water, and this batch The materials are reacted at ambient temperature; (2) 12-hydroxystearic acid is added at 170°F before conversion while heating the reactants to 190°F; and (3) no calcium carbonate is added. The proportion of high-alkali oil-soluble calcium sulfonate in this batch was 36.0%. This batch of reactants did not turn into a grease structure even after heating for several hours and was therefore discarded.

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PUM

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Abstract

An overbased calcium sulfonate grease composition comprising a reduced amount of overbased calcium sulfonate, calcium hydroxyapatite, base oil, one or more converting agents, and one or more complexing acids if a complex grease is desired. The calcium sulfonate grease composition improves thickener yield and expected high temperature utility as demonstrated by dropping point. A method of making the composition comprising the steps of mixing the calcium sulfonate and base oil, adding the calcium carbonate either before or after conversion, adding one or more converting agents, and adding one or more complexing acids. All or a portion of one or more of the complexing acids may be added with or prior to the one or more converting agents.

Description

[0001] Cross references to related applications [0002] This application claims the rights of the U.S. Provisional Patent Application No. 61 / 553,674 filed on October 31, 2011. [0003] Background of the invention 1. Technical Field [0004] The present invention relates to a high-alkali calcium sulfonate grease and a preparation method thereof. The grease is added with calcium carbonate as an alkali source. The preparation method is used to improve the yield of thickener and the expected high-temperature effect through dropping point. 2. Background technology [0005] High-alkali calcium sulfonate grease has been included in the grease category many years ago. One known method for making such fats and oils is a two-step method including "promotion" and "conversion" steps. Usually, the first step ("promotion") is to use a stoichiometric excess of calcium oxide (CaO) or calcium hydroxide (Ca(OH) 2 ) As an alkali source and alkylbenzene sulfonic acid, carbon dioxide (CO 2 ), and oth...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G39/06
CPCC10N2240/50C10M2215/064C10M2201/02C10M2207/02C10M2203/1006C10M2215/20C10M2207/122C10M2209/103C10M2219/044C10M2203/1065C10M2207/289C10M2223/043C10N2230/52C10M2207/046C10N2220/022C10M2215/226C10M2201/084C10M115/10C10M2201/087C10N2230/12C10M2205/024C10N2240/04C10M2219/0466C10M2207/10C10M2219/046C10M2207/121C10M2215/082C10M2205/028C10M2201/08C10N2230/38C10N2220/032C10N2250/10C10M2207/125C10N2230/06C10M2201/085C10N2220/082C10M2207/128C10N2270/00C10M2207/022C10M2201/062C10M177/00D07B1/144C10N2020/02C10N2020/017C10N2020/06C10N2030/06C10N2030/12C10N2030/38C10N2030/52C10N2040/04C10N2040/32C10N2050/10C10N2070/00C10M2205/04C10N2010/12C10N2010/04
Inventor J·A·韦尼克
Owner NCH CORP
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