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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 9719044 B1

PDFFull Text
Date of Patent:
Aug. 01, 2017

Filed:

Mar. 21, 2013

Lubricating oil composition for refrigerating machines

Applicant:

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

Inventors:

Tomoya Matsumoto, Ichihara, JP;

Tadashi Kisen, 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 ...
C09K 5/00 (2006.01); C09K 5/04 (2006.01); C10M 107/34 (2006.01); C10M 169/04 (2006.01); C10M 127/04 (2006.01); C10M 171/00 (2006.01); C10M 105/06 (2006.01);
U.S. Cl.
CPC ...
C10M 169/04 (2013.01); C09K 5/045 (2013.01); C10M 105/06 (2013.01); C10M 127/04 (2013.01); C10M 171/007 (2013.01); C10M 171/008 (2013.01); C09K 2205/126 (2013.01); C10M 2203/06 (2013.01); C10M 2203/065 (2013.01); C10M 2203/1006 (2013.01); C10M 2205/003 (2013.01); C10M 2205/0285 (2013.01); C10M 2205/223 (2013.01); C10M 2207/026 (2013.01); C10M 2207/0406 (2013.01); C10M 2207/2835 (2013.01); C10M 2209/043 (2013.01); C10M 2209/1023 (2013.01); C10M 2209/1033 (2013.01); C10M 2209/1055 (2013.01); C10M 2209/123 (2013.01); C10M 2215/225 (2013.01); C10N 2220/022 (2013.01); C10N 2220/302 (2013.01); C10N 2220/303 (2013.01); C10N 2220/305 (2013.01); C10N 2220/306 (2013.01); C10N 2230/02 (2013.01); C10N 2230/08 (2013.01); C10N 2230/56 (2013.01); C10N 2230/66 (2013.01); C10N 2240/30 (2013.01); C10N 2240/56 (2013.01);
Abstract

A lubricating oil composition for refrigerating machines contains a base oil and an additive in a form of a hydrocarbon compound having a biphenyl structure or a stilbene structure. When the present lubricating oil composition for refrigerating machines is used in refrigerating equipment such as an open-type automobile air-conditioner, an electric automobile air-conditioner, a gas heat pump, other air-conditioning equipment, a refrigerating machine, a vending machine, a showcase, a water-heating system and a refrigerating/heating system, it is possible to detect the leakage of a refrigerant with a long-lasting stability. Therefore, when an unsaturated chlorofluorocarbon refrigerant with a poor stability is used in the above-listed equipment, the present lubricating oil composition for refrigerating machines is significantly advantageous.

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