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:
Apr. 14, 2015
Filed:
Aug. 05, 2011
Katsuya Takigawa, Tokyo, JP;
Masanori Saito, Tokyo, JP;
Takeshi Okido, Tokyo, JP;
Kuniko Takahashi, Tokyo, JP;
Katsuya Takigawa, Tokyo, JP;
Masanori Saito, Tokyo, JP;
Takeshi Okido, Tokyo, JP;
Kuniko Takahashi, Tokyo, JP;
JX Nippon & Energy Corporation, Tokyo, JP;
Abstract
The refrigerating machine oil of the invention includes an ester of a polyhydric alcohol and a fatty acid, wherein the molar ratio of C-Cfatty acid and C-Cbranched fatty acid in the fatty acid is between 15:85 and 90:10, the C-Cfatty acid includes 2-methylpropanoic acid, and the ratio of the total C-Cfatty acid and C-Cbranched fatty acid in the total fatty acids composing the ester is at least 20 mol %. The working fluid composition for a refrigerating machine according to the invention comprises the refrigerating machine oil, a difluoromethane refrigerant and/or an unsaturated fluorinated hydrocarbon refrigerant.