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:
Nov. 18, 2014
Filed:
Mar. 31, 2011
Tadashi Kuratomi, Kitakyushu, JP;
Katsumi Nagano, Tokyo, JP;
Tadashi Kuratomi, Kitakyushu, JP;
Katsumi Nagano, Tokyo, JP;
Nippon Steel & Sumikin Chemical Co., Ltd., Tokyo, JP;
Abstract
Provided are a lubricating oil base oil having characteristics of low volatility and excellent low-temperature fluidity and capable of providing long-lasting lubrication property in a wide temperature range from low temperature to high temperature, and a lubricating oil composition using the same. The lubricating oil base oil includes a diester obtained through a reaction between a diol component formed of 1,12-dodecanediol and a carboxylic acid component formed of 2-methylpentanoic acid or 2-methylpentanoic acid and 2-ethylhexanoic acid. The diester is represented by RCOOROOCR, where Rrepresents an alkylene derived from the diol component and Rand Reach represent an alkyl derived from the carboxylic acid component, and includes 45 to 100 mol % of a diester in which both of Rand Rrepresent C5 alkyls.