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:
Dec. 11, 2012
Filed:
Oct. 10, 2007
Chi-hsing Tsai, Taipei, TW;
Chien-hsun Tsai, Taipei, TW;
Chi-Hsing Tsai, Taipei, TW;
Chien-Hsun Tsai, Taipei, TW;
Formosan Union Chemical Corp., Taipei, TW;
Abstract
Synthetic base oil composition comprising dialkyl aromatic compound with alkyl side chain carbon number from Cto C, or preferably Cto C, or even more preferably, Cto C, wherein the branching characteristics of the alkyl side chain has a total methyl number (TMN) determined by CNMR spectroscopy to be from more than 2.1 to less than 3.5, or preferably from 2.15 to 3.25, or even more preferably from 2.2 to 3.0, or a branching index (BI) from more than 0.1 to less than 1.5, or more preferably, 0.15 to 1.25, or even more preferably, 0.2 to 1.0. The synthetic base oil composition has a combination of high viscometric index, low volatility, superior low temperature properties, and improved thermal/oxidation stability, and is particularly suitable to be used as a premium synthetic base stock, second base oil component, or additive for lubricant and additive package applications.