Lubricant, lubricating composition, and sliding machine

Patent metadata

Field	Value
Publication number	US-11970669-B2
Application number	US-202318160672-A
Country	US
Kind code	B2
Filing date	Jan 27, 2023
Priority date	May 16, 2022
Publication date	Apr 30, 2024
Grant date	Apr 30, 2024

Abstract

[Technical Problem] An object is to provide a lubricant capable of forming a stable adsorption film on a sliding surface and stabilizing the sliding characteristics (for example, ensuring the wear resistance, etc.).[Solution to Problem] The present invention provides a lubricant represented by the following chemical structural formula.(R: a hydrocarbon group whose carbon number is 8 to 24, m and n: integers of 2 to 8) [Selected Figure] FIG. 5A

First claim

The invention claimed is:

1. A lubricant composition comprised of a lubricant represented by a chemical structural Formula (2) below:

2. A sliding machine having a metal surface to which the lubricant composition according to claim 1 is supplied.

3. The sliding machine according to claim 2 , wherein an organic film is present on the metal surface, wherein when positive ion spectrum analysis is performed with time-of-flight secondary ion mass spectrometry (TOF-SIMS), the organic film satisfies conditions below with reference to a reference area that is a peak area (S 0 ) around m/z 29.04 (C 2 H 5 + ):
a peak area (S 1 ) around m/z 30.03 (CH 4 N + ) is 1.5 times or more the reference area (S 1 /S 0 ≥1.5);
a peak area (S 2 ) around m/z 70.07 (C 4 H 8 N + ) is 0.3 times or more the reference area (S 2 /S 0 ≥0.3); and
a peak area (S 3 ) around m/z 84.08 (C 5 H 10 N + ) is 0.1 times or more the reference area (S 3 /S 0 ≥0.1).

4. The sliding machine according to claim 3 , wherein the organic film further satisfies a condition that a peak area (S 4) around m/z 323.32 is 0.01 times or more the reference area (S 4/S 0 ≥0.01).

5. The sliding machine according to claim 3 , wherein the organic film further satisfies a condition that a peak area (S 5) around m/z 349.35 is 0.01 times or more the reference area (S 5/S 0 ≥0.01).

6. The lubricant composition according to claim 1 , wherein in Formula (2), m and n are both 4.

Assignees

• Toyota Chuo Kenkyusho Kk

Inventors

• Tohyama Mamoru
• Moritani Hiroshi
• Hotta Shigeru
• Sato Norikazu
• Takeuchi Hisato
• Kikuzawa Yoshihiro
• Kinjo Tomoyuki

Classifications

• C10M105/58 Primary

  Amines, e.g. polyalkylene polyamines, quaternary amines (polyalkylene polyamines with eleven or more monomer units C10M107/44) · CPC title

• C10M2215/023

  used as base material · CPC title

• C10N2020/065

  Saturated Compounds · CPC title

• C10M133/06 Primary

  having amino groups bound to acyclic or cycloaliphatic carbon atoms · CPC title

• C10N2030/06

  Oiliness; Film-strength; Anti-wear; Resistance to extreme pressure · CPC title