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Title:
HYDRAULIC DEVICE OPERATING OIL AND HYDRAULIC DEVICE USING SAID HYDRAULIC DEVICE OPERATING OIL
Document Type and Number:
WIPO Patent Application WO/2018/003247
Kind Code:
A1
Abstract:
Provided is a hydraulic device operating oil which contains: a base oil; at least either a phosphorous acid ester compound or a phosphoric acid ester compound; and a secondary amide compound represented by formula 1. R1 and R2 are both a saturated or unsaturated alkyl group containing 8 to 24 carbon atoms.

Inventors:
ASHIZAWA, Ryota (6-6, Marunouchi 1-chome, Chiyoda-k, Tokyo 80, 〒1008280, JP)
ONODERA, Tasuku (6-6, Marunouchi 1-chome, Chiyoda-k, Tokyo 80, 〒1008280, JP)
OOTA, Ryou (6-6, Marunouchi 1-chome, Chiyoda-k, Tokyo 80, 〒1008280, JP)
TACHIBANA, Hiroaki (2520, Takaba, Hitachinaka-sh, Ibaraki 03, 〒3128503, JP)
TSUJIMI, Yoshie (2520, Takaba, Hitachinaka-sh, Ibaraki 03, 〒3128503, JP)
Application Number:
JP2017/015769
Publication Date:
January 04, 2018
Filing Date:
April 19, 2017
Export Citation:
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Assignee:
HITACHI AUTOMOTIVE SYSTEMS, LTD. (2520, Takaba Hitachinaka-sh, Ibaraki 03, 〒3128503, JP)
International Classes:
C10M141/10; C10M133/16; C10M137/02; C10M137/04; C10N30/06; C10N40/06; C10N40/08; F16F9/32
Domestic Patent References:
WO2013114740A12013-08-08
Foreign References:
JP2004277712A2004-10-07
JP2007231241A2007-09-13
JP2008214618A2008-09-18
JPH05255683A1993-10-05
Attorney, Agent or Firm:
SUNNEXT INTERNATIONAL PATENT OFFICE (Seafort Square Center Building, 16F 2-3-12, Higashishinagawa, Shinagawa-k, Tokyo 02, 〒1400002, JP)
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