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.:
Date of Patent:
Jul. 17, 2018
Filed:
Sep. 24, 2015
Applicant:
Jxtg Nippon Oil & Energy Corporation, Tokyo, JP;
Inventors:
Hitoshi Takahashi, Tokyo, JP;
Hiroko Shimpo, Tokyo, JP;
Souichirou Konno, Tokyo, JP;
Ken Sawada, Tokyo, JP;
Kentaro Yamaguchi, Tokyo, JP;
Assignee:
JXTG NIPPON OIL & ENERGY CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09K 5/04 (2006.01); C10M 105/40 (2006.01);
U.S. Cl.
CPC ...
C10M 105/40 (2013.01); C09K 5/045 (2013.01); C09K 2205/122 (2013.01); C09K 2205/126 (2013.01); C09K 2205/22 (2013.01); C10M 2207/2835 (2013.01); C10N 2240/30 (2013.01);
Abstract
The present invention provides a refrigerating machine oil comprising, as a base oil, at least one oxygen-containing oil having a carbon/oxygen molar ratio of 2.5 or more and 5.8 or less, wherein the refrigerating machine oil is used with a refrigerant comprising 15% by mass or more of difluoromethane, 15% by mass or more of pentafluoroethane, 15% by mass or more of 2,3,3,3-tetrafluoropropene and 15% by mass or more of 1,1,1,2-tetrafluoroethane based on the total amount of the refrigerant.