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Mercaptoazole derivatives as lubricating additives

A technology of mercaptopyrrole and its derivatives, which can be used in additives, lubricating compositions, petroleum industry, etc., and can solve the problems of insufficiently solved lubricating oil corrosion inhibition requirements, seal wear, lead corrosion, etc.

Active Publication Date: 2019-02-05
THE LUBRIZOL CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In some cases, TTZL can also cause lead corrosion
Certain TTZL derivatives may cause seal wear in some applications
Therefore, TTZL and its known derivatives do not adequately address the need for corrosion inhibition in lubricating oils

Method used

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  • Mercaptoazole derivatives as lubricating additives
  • Mercaptoazole derivatives as lubricating additives
  • Mercaptoazole derivatives as lubricating additives

Examples

Experimental program
Comparison scheme
Effect test

Embodiment A-1

[0142] The reaction product of embodiment A-1—2-mercaptobenzothiazole and 2-ethylhexyl acrylate

[0143] For Example A-1, 2-mercaptobenzothiazole MBZL (100 grams, 0.6 moles), 2-ethylhexyl acrylate (111 grams, 0.6 moles), triethylamine (60 grams, 0.6 moles) and 300 Add a mixture of mL of acetonitrile and THF to a 4-necked 1 L round bottom flask. The mixture was stirred vigorously to facilitate the dissolution of MBZL. The reaction was maintained between 50°C and 75°C until the reaction was complete. The reaction mixture containing the mercaptopyrrole-acrylic acid adduct was obtained by rotary evaporation and filtration through calcined celite.

Embodiment A-2

[0144] The reaction product of embodiment A-2 (forecast)-2-mercapto-1,3,4-triazole and 2-ethylhexyl acrylate

[0145] For Example A-2, 2-mercapto-1,3,4-triazole and 2-ethylhexyl acrylate were reacted under the same reaction conditions as in Example A-1.

Embodiment A-3

[0146] The reaction product of embodiment A-3 (forecast)-5-mercaptoimidazole and 2-ethylhexyl acrylate

[0147] For Example A-3, 5-mercaptoimidazole and 2-ethylhexyl acrylate were reacted under the same reaction conditions as in Example A-1.

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Abstract

Lubricating compositions comprising a mercaptoazole-acrylic adduct formed by contacting a mercaptoazole compound with an acrylic. The adduct formed has at least one sulfur-alkyl group comprising at least one acyl, or compounds having at least one nitrogen-alkyl group comprising at least one acyl, or mixtures thereof. The lubricating composition also comprises an antiwear agent and an antioxidant.Methods of lubricating an internal combustion engine comprising contacting the internal combustion engine with the lubricating composition comprising a mercaptoazole-acrylic adduct formed by contacting a mercaptoazole compound with an acrylic. Methods of reducing corrosion and / or seal deterioration in an internal combustion engine. The use of a mercaptoazole-acrylic adduct in a lubricating composition to reduce corrosion and / or seal deterioration in an internal combustion engine.

Description

field of invention [0001] The field of the disclosed technology generally relates to lubricating compositions comprising mercaptopyrrole derivatives. Background technique [0002] Lubricating oils are known to contain a number of surface active additives (including antiwear, dispersants or detergents) used to protect internal combustion engines from wear, soot deposits and acid buildup. Often, such surface active additives, including zinc dialkyldithiophosphates (ZDDP) or dispersants, can adversely affect bearing corrosion, dispersibility or friction performance. These additive chemistries may corrode lead or copper present in bearings and other metallic engine parts, from alloys that use copper or lead. [0003] It is difficult for formulators to meet the engine oil specifications of the present invention by using certain beneficial additives while also meeting lead or copper corrosion specifications. Commonly used copper corrosion inhibitors include pyrroles or derivativ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M135/32C10M135/36C10M141/08C10N30/12C10N40/25
CPCC10M135/32C10M141/08C10M2203/1025C10M2207/026C10M2215/00C10M2215/064C10M2215/28C10M2219/022C10M2219/046C10M2219/089C10M2223/00C10M2223/045C10M2227/061C10M2227/062C10M135/36C10N2020/04C10N2010/04C10N2030/36C10N2030/12C10N2040/25C10N2060/14C10N2030/04C10N2030/06C10N2030/10C10M2201/087C10M2219/104
Inventor 张琰湜N·H·阮
Owner THE LUBRIZOL CORP
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