Title:
建設機械用潤滑油組成物
Document Type and Number:
Japanese Patent JP6708452
Kind Code:
B2
Abstract:
The present invention is directed to a Zinc-free transmission oil composition for construction machinery comprising:
(i) a major amount of an oil of lubricating viscosity,
(ii) at least 0.25 wt. % of a dithiophosphorylated carboxylic acid compound, and
(iii) a succinimide dispersant derived from a polyisobutylene group of 1200 molecular weight or less. Also provided is a method for lubricating the transmission of a construction machine comprising lubricating the transmission with a Zinc-free transmission oil composition comprising:
(i) a major amount of an oil of lubricating viscosity,
(ii) at least 0.25 wt. % of a dithiophosphorylated carboxylic acid compound, and
a succinimide dispersant derived from a polyisobutylene group of 1200 molecular weight or less.
Inventors:
Shuhei Yamamoto
Masanobu Sakamoto
Masanobu Sakamoto
Application Number:
JP2016058885A
Publication Date:
June 10, 2020
Filing Date:
March 23, 2016
Export Citation:
Assignee:
Chevron Japan Co., Ltd.
International Classes:
C10M163/00; C10M141/10
Domestic Patent References:
| JP2015025114A | ||||
| JP10067993A | ||||
| JP2000336386A | ||||
| JP2005146010A |
Attorney, Agent or Firm:
Asamura patent office