Unlock instant, AI-driven research and patent intelligence for your innovation.

Lubricating oil composition with improved air release

A technology of lubricating oil composition and lubricating viscosity, which is applied in the direction of lubricating composition, petroleum industry, additives, etc., and can solve problems such as affecting the release of air, corrosion, and structural damage of metal parts

Active Publication Date: 2022-03-04
THE LUBRIZOL CORP
View PDF17 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These micro-explosions accelerate fluid degradation and cause structural damage to metal components
Other problems caused by trapped air include cavitation, corrosion and high noise levels
[0006] Certain fluid and lubricant additives are known to negatively affect the release of air from the fluid

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 oil composition with improved air release
  • Lubricating oil composition with improved air release
  • Lubricating oil composition with improved air release

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0120] Industrial gear lubricating oil compositions were prepared as shown in Tables I (comparative) and II (inventive) below. Viscosity measurements were taken for each base oil of lubricating viscosity using ASTM D445 before and after addition of additives. The air release of each lubricating oil composition was measured according to ASTM D3427 at 50°C.

[0121] Table I

[0122]

[0123] 1 Anti-wear additives include amine salts of hydrocarbyl phosphorothioates, further compounded as described herein by reacting phosphorus sulfide with one or more alcohols having from about 3 to about 13 carbon atoms to form phosphorothioates. reacting phosphoric acid ester with alkylene oxide to form hydroxyl-substituted phosphorothioate, and further reacting said hydroxyl-substituted phosphorothioate with phosphorous oxide to form an acidic phosphoric acid intermediate, and salifying said Acidic phosphoric acid intermediates, wherein the amine contains one or more hydrocarbon groups...

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
dispersityaaaaaaaaaa
Login to View More

Abstract

The present invention provides a lubricating oil composition comprising an ethylene / α-olefin copolymer and optionally an additive comprising an amine salt of a hydrocarbyl phosphorothioate. The present invention also provides a method of improving the air release of a lubricating oil composition by mixing an ethylene / α-olefin copolymer with an oil of lubricating viscosity.

Description

[0001] field of invention [0002] The present invention relates to a lubricating oil composition having improved air release properties. The present invention also provides a method of improving the air release of functional fluids, such as lubricating oils. Background technique [0003] To reduce friction and wear on moving parts, the lubricant must have sufficient viscosity at the normal operating temperature of the moving parts. When the lubricating film is too thin, components are not adequately protected, resulting in reduced operational life. Additionally, low viscosity at maximum operating temperatures can lead to unacceptable seizure or wear of equipment. Sufficient viscosity is also required to protect the hydraulic pump and allow it to operate efficiently by preventing leaks or internal pump recovery. [0004] The air release properties of the functional fluid or lubricant affect the maximum fluid viscosity of the lubricant. When a functional fluid or lubricant ...

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 Patents(China)
IPC IPC(8): C10M169/04
CPCC10M161/00C10M2203/1006C10M2203/1025C10M2203/1085C10M2205/026C10M2219/022C10M2223/043C10M2223/047C10M2223/121C10N2020/02C10N2030/18C10N2040/04C10N2040/08C10N2060/14C10M2205/022C10M2205/024C10M137/10C10M143/02C10M169/04
Inventor D·M·霍布森T·R·史密斯D·普赖斯
Owner THE LUBRIZOL CORP