Patent · US Expired

Lubricating oil containing alkanoic amide or ester-bridged hydrocarbyl substituted phenols

US4051049A · kind A · utility

19Cited by
5References
10Claims
0Family size

Assignee

Inventors

Key dates

Filing dateMar 15, 1976
Grant dateSep 27, 1977
Priority date—
Expiry dateMar 15, 1996

Classification

  • Technology area (CPC C)Chemistry; Metallurgy
  • CPC primaryC10N2070/02
  • WIPO fieldOrganic fine chemistry
  • WIPO sectorChemistry

Abstract

Bis-substituted phenols bridged through a carbon atom of an aliphatic carboxylic amide or ester are effective ashless dispersants for lubricating oil. Preferably, the phenols are substituted with a high molecular weight poly-alpha-olefin group.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.