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:
Oct. 01, 1996
Filed:
Jun. 06, 1995
Applicant:
Inventors:
Assignees:
Nissan Motor Co., Ltd., Yokohama, JP;
Japan Energy Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09K / ; C10M / ; C10M / ;
U.S. Cl.
CPC ...
252 68 ; 252 67 ; 508281 ;
Abstract
A working fluid composition for a compression type refrigerator, comprising: (A) a refrigerant composed of ammonia or at least one hydrofluorocarbon having the number of carbon being not more than 2 and containing no chlorine; and (B) a lubricant for the refrigerator, said lubricant comprising 100 parts by weight of a synthetic oil and 0.5 to 10.0 parts by weight of at least one benzotriazole derivative expressed by the following formula (I). ##STR1## in which R.sup.1 is hydrogen or an alkyl group having the number of carbons being 1-10, and R.sup.2 and R.sup.3 independently indicate an alkyl group having the number of carbons being 4-18.