Eureka AIR delivers breakthrough ideas for toughest innovation challenges, trusted by R&D personnel around the world.

Lubricating compositions with improved oxidation resistance containing a dispersant and an antioxidant

a technology of dispersant and antioxidant, applied in the direction of lubricant composition, liquid carbonaceous fuel, additives, etc., can solve the problems of increasing the oxidation of the lubricating composition, prone to viscosity increase of the lubricant, and rendering the lubricant unsuitable for use, so as to reduce the viscosity increase and improve the oxidation resistance. , the effect of favorable carbon/varnish ratings

Inactive Publication Date: 2009-12-31
SCHNUR ERIC R +2
View PDF9 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This patent is about a lubricating oil that has certain additives to prevent oxidation and keep it at a good viscosity. The oil has a low iodine number, meaning it has a low level of antioxidants. This helps to control the oxidation of the oil and maintain its quality.

Problems solved by technology

These higher temperatures may lead to increased oxidation of the lubricating composition.
When a lubricant has to operate for longer periods at higher temperatures, the lubricant is prone to viscosity increase.
This increased viscosity renders the lubricant unfit for use.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Lubricating compositions with improved oxidation resistance containing a dispersant and an antioxidant
  • Lubricating compositions with improved oxidation resistance containing a dispersant and an antioxidant
  • Lubricating compositions with improved oxidation resistance containing a dispersant and an antioxidant

Examples

Experimental program
Comparison scheme
Effect test

example b-1

[0099](a) An acylated nitrogen composition is prepared by reacting 3880 grams of the polyisobutenyl succinic anhydride, 376 grams of a mixture of triethylenetetramine and diethylene triamine (75:25 weight ratio), and 2785 grams of mineral oil in toluene at 150° C. The product is vacuum stripped to remove toluene.

[0100](b) A mixture of 62 grams (1 atomic proportion of boron) of boric acid and 1645 grams (2.35 atomic proportions of nitrogen) of the acylated nitrogen composition obtained from B-1(a) is heated at 150° C. in nitrogen atmosphere for 6 hours. The mixture is then filtered and the filtrate is found to have a nitrogen content of 1.94% and a boron content of 0.33%.

example b-2

[0101]A mixture of 372 grams (6 atomic proportions of boron) of boric acid and 3111 grams (6 atomic proportions of nitrogen) of a acylated nitrogen composition, obtained by reacting 1 equivalent of a polybutenyl ( Mn=850) succinic anhydride, having an acid number of 113 (corresponding to an equivalent weight of 500), with 2 equivalents of a commercial ethylene amine mixture having an average composition corresponding to that of tetraethylene-pentamine, is heated at 150° C. for 3 hours and then filtered. The filtrate is found to have a boron content of 1.64% and a nitrogen content of 2.56%.

example b-3

[0102]Boric acid (124 grams, 2 atomic proportions of boron) is added to the acylated nitrogen composition (556 grams, 1 atomic proportion of nitrogen) of Example B-2. The resulting mixture is heated at 150° C. for 3.5 hours and filtered at that temperature. The filtrate is found to have a boron compound of 3.23% and a nitrogen content of 2.3%.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
kinematic viscosityaaaaaaaaaa
kinematic viscosityaaaaaaaaaa
temperatureaaaaaaaaaa
Login to View More

Abstract

This invention relates to a lubricating composition comprising a major amount of an oil of lubricating viscosity with an iodine number less than about 9, (A) one or more antioxidant, and (B) from about 0.01% to about 3% by weight of at least one dispersant or detergent, wherein the total amount of antioxidant is at least about 2% by weight. The additives are useful act controlling oxidation of lubricants. Further, these lubricants have reduced viscosity increase caused by oxidation, while maintaining favorable carbon / varnish ratings.

Description

CROSS REFERENCE TO RELATED APPLICATION[0001]This application is a continuation-in-part of U.S. Ser. No. 08 / 229,488, filed May 19, 1994.TECHNICAL FIELD OF THE INVENTION[0002]This invention relates to a lubricating composition having improved oxidation inhibition properties.BACKGROUND OF THE INVENTION[0003]Lubricating compositions serve to remove heat from operating equipment. These compositions also act to reduce metal-metal contact which lead to wearing. Today many pieces of equipment are reduced in size, which in turn has lead to higher operating temperatures for the equipment. These higher temperatures may lead to increased oxidation of the lubricating composition.[0004]Today the drain intervals for lubricants have increased. When a lubricant has to operate for longer periods at higher temperatures, the lubricant is prone to viscosity increase. The viscosity increase is believed to be caused by polymerization of oxidized components of the lubricants. This increased viscosity rende...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(United States)
IPC IPC(8): C10M159/20C10M169/04C10M141/12C10M163/00C10M167/00
CPCC10M141/12C10M163/00C10M167/00C10M2201/087C10M2201/10C10M2201/102C10M2201/105C10M2205/026C10M2207/023C10M2207/024C10M2207/026C10M2207/027C10M2207/028C10M2207/121C10M2207/122C10M2207/125C10M2207/129C10M2207/26C10M2207/262C10M2207/281C10M2207/282C10M2207/283C10M2207/285C10M2207/286C10M2207/287C10M2207/288C10M2207/289C10M2207/34C10M2209/084C10M2211/08C10M2215/04C10M2215/042C10M2215/06C10M2215/064C10M2215/065C10M2215/066C10M2215/067C10M2215/068C10M2215/08C10M2215/082C10M2215/086C10M2215/12C10M2215/122C10M2215/224C10M2215/24C10M2215/26C10M2215/28C10M2217/028C10M2217/043C10M2217/046C10M2217/06C10M2219/022C10M2219/024C10M2219/046C10M2219/066C10M2219/068C10M2219/087C10M2219/088C10M2219/089C10M2219/10C10M2219/102C10M2219/104C10M2219/106C10M2219/108C10M2223/02C10M2223/04C10M2223/041C10M2223/042C10M2223/043C10M2223/045C10M2223/047C10M2223/049C10M2223/06C10M2223/061C10M2223/065C10M2223/10C10M2223/12C10M2223/121C10M2227/00C10M2227/06C10M2227/061C10M2227/062C10M2227/063C10M2227/065C10M2227/066C10N2210/02C10N2240/02C10N2010/04C10N2040/02
Inventor SCHNUR, ERIC R.RICHARDSON, ROBERT C.SCHWIND, JAMES J.
Owner SCHNUR ERIC R
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com