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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 9695379 B1

PDFFull Text
Date of Patent:
Jul. 04, 2017

Filed:

Aug. 25, 2014

Lubricating oil composition for shock absorber and friction reduction method for shock absorber

Applicant:

Idemitsu Kosan Co., Ltd., Chiyoda-ku, JP;

Inventors:

Shuichi Sakanoue, Chiba, JP;

Aya Aoki, Sodegaura, JP;

Assignee:

IDEMITSU KOSAN CO., LTD., Chiyoda-ku, JP;

Attorney:

Oblon, McClelland, Maier & Neustadt, L.L.P.

Primary Examiner:

Vishal Vasisth

Int. Cl.
CPC ...
C10M 137/10 (2006.01); C10M 169/06 (2006.01); C10M 133/16 (2006.01); C10M 169/04 (2006.01); C10M 141/10 (2006.01); C10M 101/02 (2006.01); C10M 129/76 (2006.01);
U.S. Cl.
CPC ...
C10M 169/04 (2013.01); C10M 101/02 (2013.01); C10M 129/76 (2013.01); C10M 133/16 (2013.01); C10M 137/10 (2013.01); C10M 141/10 (2013.01); C10M 2203/1006 (2013.01); C10M 2207/283 (2013.01); C10M 2207/289 (2013.01); C10M 2209/084 (2013.01); C10M 2215/082 (2013.01); C10M 2223/045 (2013.01); C10M 2229/051 (2013.01); C10N 2210/02 (2013.01); C10N 2230/02 (2013.01); C10N 2230/06 (2013.01); C10N 2230/08 (2013.01); C10N 2230/10 (2013.01); C10N 2240/08 (2013.01);
Abstract

Provided is a lubricating oil composition for a shock absorber excellent in thermal stability and capable of reducing the friction factor for rubber. The lubricating oil composition for a shock absorber contains (A) a base oil composed of a mineral oil and/or a synthetic oil, (B) a zinc dithiophosphate represented by the following general formula (I), (C) a fatty acid amide and (D) a polyalcohol ester. In the formula, Rto Reach independently represent at least one selected from a linear, branched or cyclic alkyl group having from 6 to 20 carbon atoms and a linear, branched or cyclic alkenyl group having from 6 to 20 carbon atoms.

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