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:
Jan. 14, 1992
Filed:
Aug. 08, 1990
Nippon Oil Co., Ltd., Tokyo, JP;
Abstract
A lubricant for a refrigerating machine is here disclosed which comprises a polyether represented by the general formula ##STR1## wherein B is a residue of a compound having 2 to 8 hydroxyl groups, A.sub.1 O and A.sub.2 O may be identical or different, each of them is an oxyalkylene group having 2 to 18 carbon atoms, X.sub.1 and X.sub.2 may be identical or different, each of them is hydrogen or a methyl group, R is hydrogen or a hydrocarbon group having 1 to 24 carbon atoms, a is an integer of from 0 to 100, b is an integer of from 1 to 100, c is an integer of from 0 to 100, d is an integer of from 0 to 100, the oxyalkylene group and the chlorine-containing group in the parentheses { } may be each combined by random copolymerization or block copolymerization, l is an integer of from 1 to 8, m is an integer of from 0 to 7, and l +m is an integer of from 2 to 8. The lubricant of the present case is particularly excellent in lubricating properties.