Title:
FLAME-RETARDANT HYDRAULIC OIL COMPOSITION
Document Type and Number:
WIPO Patent Application WO/2011/058777
Kind Code:
A1
Abstract:
Disclosed is a flame-retardant hydraulic oil which has a satisfactory antioxidant activity, an excellent inhibitory activity on the elution of zinc and good abrasion resistance, can respond to the increase in pressure and the tendency to be maintainance-free in hydraulic systems in recent years, and has a long service life. Specifically disclosed is a flame-retardant hydraulic oil composition comprising (A) at least one base oil selected from the group consisting of synthetic esters, oils and fats each of which is characterized in that the content ratio of an unsaturated fatty acid in fatty acid in fatty acids that constitute the ester moiety is 20 mol% or more and the acid value of the ester moiety is 1.0 mgKOH/g or less and (B) an alkylthiadizole in an amount of 0.001 to 1.0 mass% relative to the total amount of the composition. Preferably, the composition additionally comprises (C) a bis(4-dialkylaminophenyl)methane in an amount of 0.001 to 5.0 mass% relative to the total amount of the composition and/or (D) at least one triazole compound selected from the group consisting of a triazole derivative, a benzotriazole derivative and a tolutriazole derivative in an amount of 0.0001 to 1.0 mass% relative to the total amount of the composition.
Inventors:
MITSUMOTO SHINICHI (JP)
Application Number:
PCT/JP2010/059526
Publication Date:
May 19, 2011
Filing Date:
June 04, 2010
Export Citation:
Assignee:
NIPPON OIL CORP (JP)
MITSUMOTO SHINICHI (JP)
MITSUMOTO SHINICHI (JP)
International Classes:
C10M169/04; C10M101/04; C10M105/32; C10M133/12; C10M133/38; C10M133/44; C10M135/36; C10N20/00; C10N30/00; C10N30/04; C10N30/06; C10N40/08
Foreign References:
| JP2009161664A | 2009-07-23 | |||
| JP2005187647A | 2005-07-14 | |||
| JP2002003877A | 2002-01-09 | |||
| JP2001348590A | 2001-12-18 | |||
| JPH08165483A | 1996-06-25 |
Attorney, Agent or Firm:
MORITA NOBUYUKI (JP)
Yoriyuki Morita (JP)
Yoriyuki Morita (JP)
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