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:
Sep. 11, 1990
Filed:
May. 26, 1989
Keiichi Tanikawa, Kanagawa, JP;
Higaki Yuzo, Kanagawa, JP;
The Nisshin Oil Mills, Ltd., Tokyo, JP;
Nippon Steel Corporation, Tokyo, JP;
Abstract
Herein disclosed is a lubricating oil comprising at least one member selected from the group consisting of esterified products obtained by reacting: (A) a compound selected from the group consisting of alcohols represented by the following general formula (I), alcohols represented by the following general formula (II) and hydrogenated derivatives thereof; with (B) a fatty acid having not less than 6 carbon atoms or a mixture of the fatty acid with a rosin selected from the group consisting of rosin, hydrogenated rosins, disproportionated rosins and polymerized rosins: ##STR1## in the general formulas (I) and (II), X.sub.1 and X.sub.2 each independently represents a hydrogen atom or a methyl group and n is an integer ranging from 0 to 10. The lubricating oil is used as rolling mill oils, hydraulic oils cutting-grinding oils, lubricating oils for metal plastic working and those for internal combustion engines.