Title:
TOOL FOR DETERMINING DEGRADATION OF LUBRICATING OIL AND METHOD FOR DETERMINING DEGRADATION OF LUBRICATING OIL
Document Type and Number:
WIPO Patent Application WO/2010/021283
Kind Code:
A1
Abstract:
Provided are a method for determining whether lubricating oil has degraded, which is simple to use and which minimizes the problems associated with black lubricating oils, and a tool for determining whether lubricating oil has degraded, which is used in the same. The degradation of lubricating oil is determined by supporting on a substrate an indicator solution comprising an indicator dissolved in a protic solvent and applying lubricating oil to the substrate surface in order to cause the protons in the indicator to dissociate on the substrate.
Inventors:
ENDO MASATOSHI
WATANABE TOSHIKI
TOCHIGI HIROSHI
YAMAMOTO KUNIHARU
WATANABE TOSHIKI
TOCHIGI HIROSHI
YAMAMOTO KUNIHARU
Application Number:
PCT/JP2009/064245
Publication Date:
February 25, 2010
Filing Date:
August 12, 2009
Export Citation:
Assignee:
UNIV YAMAGATA (JP)
COSMO OIL LUBRICANTS CO LTD (JP)
ENDO MASATOSHI
WATANABE TOSHIKI
TOCHIGI HIROSHI
YAMAMOTO KUNIHARU
COSMO OIL LUBRICANTS CO LTD (JP)
ENDO MASATOSHI
WATANABE TOSHIKI
TOCHIGI HIROSHI
YAMAMOTO KUNIHARU
International Classes:
G01N31/22; G01N31/00; G01N33/30
Foreign References:
| JPS61585B2 | 1986-01-09 | |||
| JPS62102159A | 1987-05-12 |
Other References:
MASATOSHI ENDO ET AL.: "Engine Oil no Kan'i Rekka Hantei Shikenho no Kaihatsu", THE JAPAN SOCIETY FOR ANALYTICAL CHEMISTRY NENKAI KOEN YOSHISHU, vol. 57, 27 August 2008 (2008-08-27), pages 139
Attorney, Agent or Firm:
OGURI Shohei et al. (JP)
Shohei Oguri (JP)
Shohei Oguri (JP)
Download PDF:
Previous Patent: INFORMATION PROCESSING DEVICE, METHOD FOR PROCESSING DATA, AND PROGRAM
Next Patent: DEVICE FOR WASHING ORAL CAVITY
Next Patent: DEVICE FOR WASHING ORAL CAVITY