Title:
ギア液
Document Type and Number:
Japanese Patent JP4856575
Kind Code:
B2
Abstract:
A gear fluid composition for extreme pressure applications. The composition includes a base oil component and a friction modifier mixture. The mixture is provided by an alkyl phosphonic acid diester of the formula:
wherein R 1 is a hydrocarbyl group containing from about 8 to about 24 carbon atoms, R 2 and R 3 are selected from a hydrocarbyl group containing from about 1 to about 8 carbon atoms, an alkyl phosphonic acid monoester of the formula
wherein R 4 is a hydrocarbyl group containing from about 8 to about 24 carbon atoms, R 5 is hydrogen or hydrocarbyl group containing from about 1 to about 8 carbon atoms, and an amine salt of a partial ester of phosphoric acid represented by the formula
wherein each of R 6 and R 8 is a hydrocarbyl group, and R 7 is hydrogen or a hydrocarbyl group, and wherein the ratio of (i) to (ii) ranges from about 3 to about 5.5.
Inventors:
Chip House
Application Number:
JP2007075420A
Publication Date:
January 18, 2012
Filing Date:
March 22, 2007
Export Citation:
Assignee:
Afton Chemical Corporation
International Classes:
C10M137/08; C10M137/12; C10M177/00; C10N30/06; C10N40/04; C10N70/00
Domestic Patent References:
| JP2004339222A | ||||
| JP2000119558A |
Attorney, Agent or Firm:
Patent business corporation Odashima patent office