Lubricant contg. molybdenic compound, phenolate and diaryl amine

A technology of molybdenum compounds and diarylamines, applied in lubricating compositions, additives, petroleum industry, etc., can solve problems that have not been described or raised, and achieve the effects of reducing requirements, reducing costs, and reducing costs

Inactive Publication Date: 2000-10-04
AFTON CHEMICAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

U.S. Patent 5,840,672 (inventor also Gatto) discloses antioxidant systems utilizing molybdenum as one of the components, but neither describes nor suggests the combination of molybdenum compounds substantially free of reactive sulfur with diarylamines and alkaline earth metal phenols. use with salt

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0059] To test various three-component systems of the present invention, the oils listed in Table 1 were prepared. The premixed oil is a modern passenger car internal combustion engine oil formula, which is used for 5W-30 passenger car internal combustion engine oil. Premix oils #1 to #14 contained 0.3 wt% diphenylamine. Premix oils #15 and #16 do not contain diphenylamine. Base Oil by Hydrocracking Excel TM 100N and Hydrocracking Excel TM 260N blend composition. Molybdenum-containing compounds are organic molybdenum complexes of organic amides sold under the trade name Molyvan by R.T. Vanderbilt Company (Norwalk, CT). TM 855 for sale. This compound contains 8 wt% molybdenum. The test oil was brought to 100% using the process oil without any additives. The diphenylamine compound is styryl octyl diphenylamine provided by Ethyl Corporation. Low TBN calcium sulfonate with a TBN of 27.5 was provided by Ethyl Corporation. High TBN calcium sulfonate with a TBN of 300 was...

example 2

[0078] This experiment was performed to evaluate the three component additive system of the present invention against the diphenylamine / calcium phenate additive system in the CMOT and in the Caterpillar 1M-PC engine. The 1M-PC test method is designed for high speed, supercharged diesel engine operation and, in particular, concerns the descaling and antiwear properties of diesel crankcase lubricating oils. This experiment evaluates ring adhesion, ring and cylinder wear and piston deposits using a single cylinder supercharged diesel engine. Before each test, the power section of the engine (except for the piston assembly) was completely disassembled, solvent cleaned, measured and reassembled in strict accordance with the assembly instructions. Equipped with new pistons, piston ring assemblies and cylinder liners prior to each test. The engine crankcase is solvent cleaned and worn or damaged parts are replaced. Equip the test stand with appropriate auxiliary equipment to contro...

example 3

[0084] This experiment was performed in order to examine the properties of the three-component additive package of the present invention in comparison to additive packages outside the scope of the present invention using the 1M-PC test. Table 5 lists the oil #17 and #18 compositions used in Example 2, and the oils #19 and #20 used in this experiment.

[0085] components

[0086] * = the present invention

[0087] The 1M-PC test described in Example 2 was performed on Test Oils #17-20. The results are shown in Table 6.

[0088] 1M-PC

[0089] Table 6 data clearly shows that the three-component additive system of the present invention (oil # 18 and # 19) Can efficiently reduce the amount of deposits formed. Oil # The 18 was also rated in the Cummins 8.3-liter natural gas engine. The Cummins natural gas engine test adopts a turbocharged, in-line 6-cylinder, overhead valve structure, and the working capacity of the cylinder is 8.3 liters. This design is...

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PUM

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Abstract

There is disclosed a lubricating oil composition which contains from about 50 to 1000, preferably 50 to 500 parts per million of molybdenum from a molybdenum compound which is oil-soluble and substantially free of reactive sulfur, about 1,000 to 20,000, preferably 1,000 to 10,000 parts per million of a diarylamine and about 2,000 to 40,000 parts per million of a phenate. This combination of ingredients provides improved oxidation control and improved deposit control to the lubricating oil. The composition is particularly suited for use as a crankcase lubricant.

Description

technical field [0001] The invention relates to a lubricating oil composition, a preparation method and application thereof. More particularly, the present invention relates to lubricating oil compositions comprising a molybdenum compound, a diarylamine and an alkaline earth metal phenate, wherein the molybdenum compound is substantially free of reactive sulfur. Molybdenum compounds used in combination with diarylamines and phenates in certain amounts provide lubricating oils with improved oxidation control, reduced tappet wear and reduced piston, ring and valve deposits. Background of the invention [0002] Lubricants for internal combustion engines in cars or trucks are exposed to the working environment during operation. This environment exposes the oil to oxidation; impurities such as iron compounds present in the oil can catalyze this oxidation; also the high temperatures at which the oil works accelerate this oxidation. This oxidation of lubricating oils during servi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M129/10C10M129/26C10M133/12C10M135/30C10M159/12C10M159/18C10M159/20C10M159/22C10M163/00C10N10/04C10N10/12C10N30/04C10N30/06C10N30/10C10N40/25
CPCC10N2240/101C10M2219/088C10M2215/06C10M2207/125C10M2207/09C10N2210/06C10M2207/129C10M2207/023C10M2215/068C10M2207/027C10N2240/104C10M2207/126C10M2215/064C10M2219/087C10N2210/00C10N2240/106C10M2215/067C10M2207/262C10N2240/10C10M2215/066C10M2219/089C10M2207/026C10M163/00C10M2207/028C10M2227/09C10M2219/046C10M2215/065C10M129/10C10M129/40C10M133/12C10M159/18C10M159/22C10N2010/00C10N2010/12C10N2040/25C10N2040/28C10N2040/251C10N2040/255C10M125/04C10M165/00C10N2030/06
Inventor V·J·加托E·F·佩罗兹C·郭
Owner AFTON CHEMICAL
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